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Novel Gluten-Free Amaranth and Oat Flour Cookies Fortified with Soybean Hulls
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作者 Sean X. Liu Diejun Chen 《Food and Nutrition Sciences》 2023年第8期699-719,共22页
Soybean hulls, an abundant byproduct of soybean processing, contain rich phytochemicals, fibers, proteins, and minerals. Currently soybean hulls are primarily used as animal feeds. For value-added soybean hull utiliza... Soybean hulls, an abundant byproduct of soybean processing, contain rich phytochemicals, fibers, proteins, and minerals. Currently soybean hulls are primarily used as animal feeds. For value-added soybean hull utilization, 25% soybean hulls were substituted for amaranth or whole oat flour (WOF) in novel gluten-free cookies. Composition, nutritional values, water-holding capacities, correlation between properties, and pasting and rheological properties of soybean hulls, amaranth, and WOF were appraised in comparison to wheat flour. Water loss, cookie texture, and geometrical properties of the cookies were examined. The results disclosed that soybean hulls, amaranth and WOF contain higher protein content, minerals, fiber, special amino acids, and critical vitamins (C and K) than wheat flour. Considerably higher total amino acid content was found in soybean hulls (18.33%) than wheat flour (12.77%). Water-holding capacities increased by replacing amaranth and WOF with soybean hulls. Soybean hulls exhibited higher rheological elastic properties than amaranth, WOF and wheat flours. The soybean hulls utilized in amaranth or WOF cookies greatly improved their nutritional value, the water retention and moisture content along with acceptable physical properties when compared to wheat flour cookies. This study explored the feasibility and potential of utilizing soybean hulls with amaranth and WOF in gluten-free bakery products and other food applications. 展开更多
关键词 amaranth NUTRITION OAT Protein Rheology Soybean Hulls Water-Holding
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Bioassay and Characterization of Several Palmer Amaranth (<i>Amaranthus palmeri</i>) Biotypes with Varying Tolerances to Glyphosate 被引量:2
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作者 Robert E. Hoagland Robin H. Jordan Neal D. Teaster 《American Journal of Plant Sciences》 2013年第5期1029-1037,共9页
The wide distribution of Palmer amaranth (Amaranthus palmeri) in the southern US became a serious weed control problem prior to the extensive use of glyphosate-resistant crops. Currently glyphosate-resistant populatio... The wide distribution of Palmer amaranth (Amaranthus palmeri) in the southern US became a serious weed control problem prior to the extensive use of glyphosate-resistant crops. Currently glyphosate-resistant populations of Palmer amaranth occur in many areas of this geographic region creating an even more serious threat to crop production. Investigations were undertaken using four biotypes (one glyphosate-sensitive, one resistant from Georgia and two of unknown tolerance from Mississippi) of Palmer amaranth to assess bioassay techniques for the rapid detection and level of resistance in populations of this weed. These plants were characterized with respect to chlorophyll, betalain, and protein levels and immunological responses to an antibody of 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) the target site of glyphosate. Only slight differences were found in four biotypes grown under greenhouse conditions regarding extractable soluble protein and chlorophyll content, but one biotype was found to be devoid of the red pigment, betalain. Measurement of early growth (seedling shoot elongation) of seedlings was a useful detection tool to determine glyphosate resistance. A leaf disc bioassay (using visual ratings and/or chlorophyll analysis) and an assay for shikimate accumulation were effective methods for determining herbicide resistance levels. The two unknown biotypes were found to be resistant to this herbicide. Some differences were found in the protein profiles of the biotypes, and western blots demonstrated a weak labeling of antibody in the glyphosate-sensitive biotype, whereas strong labeling occurred in the resistant plants. This latter point supports research by others, that increased copy number of the EPSPS gene (and increased EPSPS protein levels) is the resistance mechanism in this species. Results indicate the utility of certain bioassays for the determination of resistance and provide useful comparative information on the levels of inherent constituents among closely related plants. 展开更多
关键词 amaranthUS palmeri BETALAIN Chlorophyll EPSPS GLYPHOSATE-RESISTANT Weeds Palmer amaranth Pigweed Western Blot
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Interaction of the Bioherbicide <i>Myrothecium verrucaria</i>with Technical-Grade Glyphosate on Glyphosate-Susceptible and -Resistant Palmer Amaranth 被引量:2
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作者 Robert E. Hoagland C. Douglas Boyette +1 位作者 Robin H. Jordan Kenneth C. Stetina 《American Journal of Plant Sciences》 2018年第11期2306-2319,共14页
Previously we found that a strain of Myrothecium verrucaria (MV) exhibited bioherbicidal activity against several important weeds, and that some commercial formulations of glyphosate applied with MV resulted in synerg... Previously we found that a strain of Myrothecium verrucaria (MV) exhibited bioherbicidal activity against several important weeds, and that some commercial formulations of glyphosate applied with MV resulted in synergistic interactions that improved weed control efficacy. We also found that MV had bioherbicidal activity against glyphosate-resistant Palmer amaranth. We have also reported that some commercial formulations are inhibitory to MV. Our objectives were to test the effect of unformulated glyphosate (high purity, technical-grade glyphosate) alone and in combination with MV for bioherbicidal activity on glyphosate-susceptible and -resistant Palmer amaranth biotypes under greenhouse conditions and to examine technical-grade glyphosate on the growth of this bioherbicide. High purity glyphosate (without adjuvants/surfactants) was not toxic to MV growth and sporulation at concentrations up to 2.0 mM when grown on agar supplemented with the herbicide. Both biotypes were injured by MV and MV plus glyphosate treatments as early as 19 h after application (3 h after a dew period of 16 h). These injury effects increased and were more evident through the 6-day time course, when after 120 h the MV plus glyphosate treatment had killed all glyphosate-susceptible and -resistant plants. The interaction of glyphosate plus MV was synergistic toward the control of Palmer amaranth. Data strongly suggest that the active ingredient is responsible for the synergy previously found when this bioherbicide was combined with some commercial formulations of glyphosate. Results demonstrated that MV can control both glyphosate-resistant and -susceptible Palmer amaranth seedlings and act synergistically with high-purity glyphosate to provide improved weed control. 展开更多
关键词 amaranthUS palmeri Biocontrol Agent BIOHERBICIDE Biological Weed Control Glyphosate-Resistance Myrothecium verrucaria Palmer amaranth Pigweed
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Genomic Stability of Palmer amaranth Plants Derived by Macro-Vegetative Propagation
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作者 Neal Dwaine Teaster Robert Edward Hoagland 《American Journal of Plant Sciences》 2014年第21期3302-3310,共9页
qPCR (quantitative polymerase chain reaction) and random amplified polymorphic DNA (RAPD) were utilized to investigate genetic stability of Palmer amaranth cloned plants over 10 generations. DNA from original parent P... qPCR (quantitative polymerase chain reaction) and random amplified polymorphic DNA (RAPD) were utilized to investigate genetic stability of Palmer amaranth cloned plants over 10 generations. DNA from original parent Palmer amaranth plants (grown from seeds) was re-analyzed using qPCR, and confidence levels for determining ΔΔCt (threshold crossing) values were established. ANOVA was used to determine variation (margin of error) of these ΔΔCt values. This margin of error was applied to qPCR analysis of DNA from eight individual parent plants and their descendants (10th generation) so that possible differences in EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) gene copy number could be ascertained. This method (and the associated error) indicated a lack of agreement in ΔΔCt values of DNA from plants of these two generations. qPCR analysis showed that in five out of eight clones, EPSPS gene copy number varied more than the calculated error (P = 0.05). A second technique to monitor genetic stability, RAPD was used to determine possible changes in genomic DNA due to extended cloning of these regenerated plants. RAPD analysis showed that four out of the eight clones differed when the profiles of the two generations were compared. Results show that qPCR and RAPD analysis point to the fact that several Palmer amaranth clones experienced changes in genome structure over 10 generations. Although the glyphosate resistance trait was retained, results suggest that during cloning studies, the genetic stability of macro-vegetatively propagated lines should be monitored. 展开更多
关键词 amaranthUS palmeri EPSPS Gene COPY Number GLYPHOSATE-RESISTANT WEEDS Palmer amaranth Pigweed qPCR RAPD
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Target Site-Based Resistance to ALS Inhibitors, Glyphosate, and PPO Inhibitors in an <i>Amaranthus palmeri</i>Accession from Mississippi
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作者 Vijay K. Nandula Darci A. Giacomini William T. Molin 《American Journal of Plant Sciences》 2020年第8期1206-1216,共11页
Extensive acceptance of glyphosate-resistant (GR) row crops coupled with the simultaneous increase in glyphosate usage has sped the evolution of glyphosate resistance in economically important weeds. GR </span>&... Extensive acceptance of glyphosate-resistant (GR) row crops coupled with the simultaneous increase in glyphosate usage has sped the evolution of glyphosate resistance in economically important weeds. GR </span><i><span style="font-family:Verdana;">Amaranthus</span></i><span style="font-family:Verdana;"> <i>palmeri</i></span><span style="font-family:Verdana;"> populations are widespread across the state with some exhibiting multiple resistance to acetolactate synthase (ALS) inhibiting herbicides such as pyrithiobac. A GR and ALS inhibitor-resistant accession was also resistant to the protoporphyrinogen oxidase (PPO) inhibiting herbicide fomesafen. The PPO inhibitor resistance profile and multiple herbicide resistance mechanisms in </span><span style="font-family:Verdana;">this accession were investigated. In addition to fomesafen, resistance to</span><span style="font-family:Verdana;"> postemergence applications of acifluorfen, lactofen, carfentrazone, and sulfentrazone was confirmed. There was no resistance to preemergence application of fomesafen, flumioxazin, or oxyfluorfen. Molecular analysis of the </span><span style="font-family:Verdana;">ALS</span><span style="font-family:Verdana;"> gene indicated the presence of point mutations leading to single nucleotide substitutions at codons 197, 377, 574, and 653, resulting in proline-to-serine, arginine-to-glutamine, tryptophan-to-leucine, and serine-to-asparagine replacements, respectively. The resistant accession contained up to 87-fold more copies of the </span><span style="font-family:Verdana;">EPSPS</span><span style="font-family:Verdana;"> gene compared to a susceptible accession. A mutation leading to a deletion of glycine at codon 210 (ΔG210) of </span><span style="font-family:Verdana;">PPO2</span><span style="font-family:Verdana;"> gene was also detected. These results indicate that the mechanism of resistance in the Palmer amaranth accession is target-site based, </span><i><span style="font-family:Verdana;">i</span></i><span style="font-family:Verdana;">.</span><i><span style="font-family:Verdana;">e</span></i><span style="font-family:Verdana;">., altered target site for ALS and PPO inhibitor resistance and gene amplification for glyphosate resistance. 展开更多
关键词 amaranthus palmeri ALS Inhibitors GLYPHOSATE Palmer amaranth PPO Inhibitors RESISTANCE
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Electron-Microscopic Study of Microsporogencsis in Male-sterile and Male-fertile Grain Amaranth(Amaranthus hypochondriacus L.)
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作者 方宣钧 金芜军 +1 位作者 梁劬 梁振兴 《Developmental and Reproductive Biology》 1996年第1期55-59,T001-T002,共7页
A comparative study of microsporogenesis in male-sterile and male-fertile grain amaranth was conducted using electron-microscopy.The onset of microsporogenesis breakdown in male-sterile is at the mononuclear pollen st... A comparative study of microsporogenesis in male-sterile and male-fertile grain amaranth was conducted using electron-microscopy.The onset of microsporogenesis breakdown in male-sterile is at the mononuclear pollen stage following the release of microspores from tetrads.Abnormality in the behavior of degenerated tapetum was observed, which failed to envelope individual microspores after their release, leading to an abnormal vacuolation in the mononuclear pollen grains.As a result, the normal thickening of pollen wall could not occur and pollen grains could not engorge, causing male sterility. 展开更多
关键词 amaranth Male-sterile Microsporogenesi
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Investigation of Biochemical Properties and Fractional Composition of Amaranth Oil
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作者 Raushan Uazhanova Mariam Alimardanova Maigul Kizatova 《Journal of Life Sciences》 2013年第4期437-442,共6页
The aim of the study is to conduct comprehensive experiments and developments of innovative technologies to produce the oil extract of amaranth for their application as food additives in the food industry. To achieve ... The aim of the study is to conduct comprehensive experiments and developments of innovative technologies to produce the oil extract of amaranth for their application as food additives in the food industry. To achieve the aim, the following tasks were identified: (I) study the physicochemical, biochemical properties and the composition of amaranth seeds; (2) improving the methods for producing the oil extract of amaranth. This article is devoted to complex research of processes of manufacture of vegetable oils. Authors have developed scientific bases of improvement and an intensification of technological processes for production of oil from amaranth seeds. The authors have developed a new technology for extracting of oil from amaranth seeds using hexane as a solvent. The proposed method provides to obtain oil without great technical effort and keeps it all the nutrients that promote the highest taste of the product and with little labor and time costs. 展开更多
关键词 amaranth amaranth oil biochemical properties fractional composition.
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The Effect of Drought Occurring at Different Growth Stages on Productivity of Grain Amaranth Amaranthus cruentus G6
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作者 Silva Grobelnik Mlakar Martina Bavec Manfred Jakop Franc Bavec 《Journal of Life Sciences》 2012年第3期283-286,共4页
A greenhouse pot experiment was conducted to study the effect of drought induced at different phenological stages on growth, biomass production and yield performance of grain amaranth Amaranthus cruentus G6. After eme... A greenhouse pot experiment was conducted to study the effect of drought induced at different phenological stages on growth, biomass production and yield performance of grain amaranth Amaranthus cruentus G6. After emergence seedlings were exposed to different soil water regimes: constant adequate moisture (W1) and drought (W2) throughout the growing period, drought initiated at crop inflorescence formation (W3), drought condition during pre-inflorescence formation (W4) and treatment W5 where drought condition occurred in the period from the beginning of inflorescence formation to the beginning of flowering. Crop samples were taken at the maturity. The growth and yield performance of amaranth were assessed by measuring root length, stem height and inflorescence length, and by evaluating fresh and dry weight of plant parts, grain yield and harvest index. Drought stress initiated at different phenological stages affected the evaluated morphological parameters, assimilate allocation and grain yield. Drought throughout the growing period resulted in grain and biomass yield reduction for 51% and 50%, respectively. Water deficit during inflorescence formation appears to be critical growing stage influencing grain yield, while soil drying in the vegetative growth stages improve the assimilate allocation to the above-ground biomass and particularly to the grain. 展开更多
关键词 Grain amaranth amaranthus cruentus DROUGHT biomass allocation grain yield.
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富钾植物籽粒苋(Amaranthus spp.)对土壤矿物钾的吸收利用研究 被引量:11
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作者 周明 涂书新 +1 位作者 孙锦荷 郭智芬 《核农学报》 CAS CSCD 北大核心 2005年第4期291-296,共6页
运用土培、石英砂培、有机酸释钾实验及矿物X衍射分析研究了不同基因型籽粒苋(Amaranthusspp.)对土壤矿物钾的吸收利用及其机制。结果表明,籽粒苋能有效地利用土壤和云母(黑云母和金云母)中的钾;籽粒苋品种R104、CX4对钾的吸收量高于一... 运用土培、石英砂培、有机酸释钾实验及矿物X衍射分析研究了不同基因型籽粒苋(Amaranthusspp.)对土壤矿物钾的吸收利用及其机制。结果表明,籽粒苋能有效地利用土壤和云母(黑云母和金云母)中的钾;籽粒苋品种R104、CX4对钾的吸收量高于一般型品种(CX77);籽粒苋根系能引起云母矿物向蛭石转化;籽粒苋根系分泌物中的草酸比一般有机酸具有更高的释放矿物中钾素的能力。 展开更多
关键词 籽粒苋 富钾植物 矿物钾 有机酸 草酸 吸收利用 SPP 利用研究 土壤 根系分泌物
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镉超富集苋菜品种(Amaranthus mangostanus L.)的筛选 被引量:37
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作者 范洪黎 周卫 《中国农业科学》 CAS CSCD 北大核心 2009年第4期1316-1324,共9页
【目的】苋菜在中国的分布很广,品种资源丰富。通过筛选耐镉苋菜品种,发掘镉污染土壤植物修复资源。【方法】采用溶液培养方法,从来自不同生态区域的23个苋菜品种(Amaranthus mangostanus L.)中筛选出具有镉超富集能力的品种;采用赤红... 【目的】苋菜在中国的分布很广,品种资源丰富。通过筛选耐镉苋菜品种,发掘镉污染土壤植物修复资源。【方法】采用溶液培养方法,从来自不同生态区域的23个苋菜品种(Amaranthus mangostanus L.)中筛选出具有镉超富集能力的品种;采用赤红壤、黄棕壤、菜园土进行盆栽试验,研究苋菜在土壤Cd浓度分别为5、10、25mg·kg-1时,对镉污染土壤的修复潜力。【结果】在溶液Cd浓度3mg·L-1条件下培养,苋菜品种天星米地上部镉含量高达260mg·kg-1。在土壤Cd浓度25mg·kg-1条件下,苋菜天星米地上部镉浓度高达212mg·kg-1,富集系数达到8.5,地上部净化率达3.8%,各镉处理水平总生物量以及地上部生物量均未显著降低。【结论】苋菜天星米基本具备了镉超富集植物的特征,可用于镉污染土壤的生物修复。 展开更多
关键词 苋菜 超富集 生物修复
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不同镉积累型苋菜(Amaranthus mangostanus L.)根际低分子量有机酸与镉吸收的关系 被引量:21
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作者 范洪黎 王旭 周卫 《中国农业科学》 CAS CSCD 北大核心 2007年第12期2727-2733,共7页
【目的】研究低镉积累型苋菜紫背苋和高镉积累型苋菜天星米在镉胁迫下低分子量有机酸分泌特征及其与苋菜镉生物积累的关系。【方法】采用溶液培养法进行试验。【结果】随供镉浓度增加,紫背苋根、茎和叶生物量显著降低,而天星米生物量未... 【目的】研究低镉积累型苋菜紫背苋和高镉积累型苋菜天星米在镉胁迫下低分子量有机酸分泌特征及其与苋菜镉生物积累的关系。【方法】采用溶液培养法进行试验。【结果】随供镉浓度增加,紫背苋根、茎和叶生物量显著降低,而天星米生物量未发生明显改变。不同镉暴露条件下,苋菜分泌的有机酸总量表现为天星米远高于紫背苋,有机酸含量均表现为柠檬酸>苹果酸>乙酸>丙酸>丁酸,且以柠檬酸和苹果酸为主。两品种各有机酸数量占有机酸总量的比例基本一致。随供镉浓度增加,两个苋菜品种根分泌的各有机酸量增加,各有机酸分泌量的增幅均表现为天星米大大高于紫背苋,植株根、茎和叶镉含量与积累量也相应表现为天星米大大高于紫背苋。【结论】苋菜镉的生物积累与有机酸种类没有特异性关系,但与有机酸的总量有关。镉胁迫诱导根系分泌有机酸的数量,在引起两品种对镉吸收的差异方面起重要作用。 展开更多
关键词 苋菜 低分子量有机酸
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Effects of Copper on the Photosynthesis and Oxidative Metabolism of Amaranthus tricolor Seedlings 被引量:8
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作者 KEShi-sheng 《Agricultural Sciences in China》 CAS CSCD 2007年第10期1182-1192,共11页
The objective of the present study was to gain better insight into the physiological mechanisms on the effects of copper (Cu) on photosynthesis and active oxygen metabolism in three-colored amaranth plant (Amaranth... The objective of the present study was to gain better insight into the physiological mechanisms on the effects of copper (Cu) on photosynthesis and active oxygen metabolism in three-colored amaranth plant (Amaranthus tricolor). Three- colored amaranth seedlings were subjected to different Cu levels in soils during the entire experimental period. The parameters of growth, photosynthesis, mineral elements contents, and active oxygen metabolism were investigated using plant physiological methods. The results showed that 2.0 and 4.0 mmol Cu kg^-1 treatments decreased the whole plant biomass to 91 and 73% of the control, respectively. The net photosynthetic rate (Pn) and the stomatal conductance (gs) were similarly reduced in the third leaves of three-colored amaranth seedlings treated with 2.0 and 4.0 mmol Cu kg^-1 soil, respectively. None of the investigated Cu levels decreased the internal CO2 concentration (Ci). The effect of Cu on the potential efficiency of photosystem Ⅱ (Fv/Fm) was negligible, whereas the effect of Cu on the PS Ⅱ quantum efficiency (ΦPS Ⅱ) after plant adaptation in actinic irradiation was more noticeable. On the other hand, decreases in water percentage, contents of photosynthetic pigments and mineral elements including Fe, K, and Mg, and significant increase in the Cu content were observed in the third leaves of Cu-treated plants. Superoxide dismutase (SOD) and peroxidase (POD) activities as well as the proline (Pro) content significantly increased in the third leaves of the three-colored amaranth seedlings treated with 2.0 and 4.0 mmol Cu kg^-1 soil, while catalase (CAT) and ascorbate peroxidase (APX) activities as well as the contents of carotenoid (Car), glutathione (GSH), and ascorbic acid (AsA) decreased, and accompanied by the increases in the contents of hydrogen peroxide (H2O2), superoxide anion (O2^-), and malondialdehyde (MDA), and electrolyte leakage. As a result of the imbalance of active oxygen metabolism, Pn and ΦPS Ⅱ decreased, and peroxidization enhanced under levels of 2.0 and 4.0 mmol Cu kg^-1 soil. Finally, the growth of three-colored amaranth plant was significantly inhibited. 展开更多
关键词 copper toxicity growth PHOTOSYNTHESIS active oxygen metabolism three-coloured amaranth plants amaranthus tricolor)
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Genotypic Variations in Potassium Absorption and Utilization by Amaranthus spp. 被引量:5
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作者 TUSHUXIN SUNJINGHE 《Pedosphere》 SCIE CAS CSCD 2000年第4期363-372,共10页
The kinetics of K+ absorption and the utilization of both applied K and K in a calcareous alluvisol with low available K by different genotypes of grain amaranth (Amaranthus spp.), an ancient pseudo-cereal that produc... The kinetics of K+ absorption and the utilization of both applied K and K in a calcareous alluvisol with low available K by different genotypes of grain amaranth (Amaranthus spp.), an ancient pseudo-cereal that produces a large biomass and a rich source of healthy nutrients and mineral elements, were studied by means of ion depletion technique and pot experiments. Grain amaranth had a high affinity for K+ uptake in comparison with corn and cotton. However, there were differences among Amaranthus spp. in K absorption and utilization. Some cultivars such as R104, CX-4, Du001, Hy015 and Hr029 which had a higher rate of K absorption and stronger affinity for K+ were typical varieties with high K-use efficiency (KUE). The results showed that high KUE cultivars grew quickly, possessed stronger ability to take up soil slowly available K and mineral K, and did not respond to K fertilization in the soil with low available K. Correspondingly, grain amaranth cultivars CX-77, Cr024, Vd001, Re003 and Sn003 were relatively low in KUE. Compared with high KUE cultivars, they took up more soil available K and both of their dry matter accumulation and K uptake responded to K applied significantly. 展开更多
关键词 grain amaranth KINETICS potassium absorption and utilization
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Screening of Amaranth Cultivars(Amaranthus mangostanus L.) for Cadmium Hyperaccumulation 被引量:2
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作者 FAN Hong-li ZHOU Wei 《Agricultural Sciences in China》 CAS CSCD 2009年第3期342-351,共10页
The potential harm of soil cadmium pollution to ecological environment and human health has been increasingly widely concerned. Phytoremediation, as a kind of new and effective technology, has become an important meth... The potential harm of soil cadmium pollution to ecological environment and human health has been increasingly widely concerned. Phytoremediation, as a kind of new and effective technology, has become an important method for cleaning up cadmium in contaminated sites. The amaranth (Amaranthus mangostanus L.) is widely distributed and has abundant varieties in China, its rapid growth and large biomass can be served as candidate for cadmium hyperaccumulators for phytoremediation. To obtain cadmium hyper-accumulator, Cd uptake in 23 amaranth cultivars from different ecological region was investigated under hydroponic culture condition. Meanwhile, pot experiment was established to probe phytoremediation potentiality of Cd contaminated soil by amaranth. Three treatment (Cd 5, 10, and 25 mg kg^-1) were imposed to red soil, yellow brown soil, and vegetable soil. The results showed that under hydroponic culture with Cd 3 mg L^-1, the cadmium concentration in the shoots of the cultivar Tianxingmi reached 260 mg kg^-1, and its total cadmium uptake was the highest among various cultivars. In the treatment Cd 25 mg kg^-1, the cadmium concentration in the shoots of the cultivar Tianxingmi reached 212 mg kg^-1, while bioaccumulation factor and shoot purification rate reached 8.50 and 3.8%, respectively. Further, the total biomass and shoot biomass were not decreased significantly under Cd exposure. These results suggested that cultivar Tianxingmi is a typical Cd hyperaccumulator, and can be expected to be used in phytoremediation of Cd contaminated soil. 展开更多
关键词 CADMIUM HYPERACCUMULATION amaranth PHYTOREMEDIATION
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Morphological Characterization of <i>Amaranthus palmeri</i>x <i>A. spinosus</i>Hybrids 被引量:2
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作者 William T. Molin Vijay K. Nandula 《American Journal of Plant Sciences》 2017年第6期1499-1510,共12页
The growth of clones of seven Amaranthus palmeri x A. spinosus hybrids was compared to type specimens of A. palmeri and A. spinosus. The hybrids came from the field where they were originally discovered and clones of ... The growth of clones of seven Amaranthus palmeri x A. spinosus hybrids was compared to type specimens of A. palmeri and A. spinosus. The hybrids came from the field where they were originally discovered and clones of the type specimens and hybrids were established under greenhouse conditions and used to compare growth rates. A. palmeri had the highest growth rate and A. spinosus the lowest growth rate based on height, node counts, and dry weight accumulation. A. palmeri also had the greatest number of days to flowering and A. spinosus the fewest. Hybrids had intermediary growth rates and days to flowering, but differed from each other with regard to sex identity. The hybrids were either dioecious like A. palmeri or, if monoecious, had patterns unlike A. spinosus. Spine length and texture also varied in hybrids and some were without spines. Hybrid 16Ci was short compared to all others and had succulent leaves and stems, which easily separated from the plant body. These hybridizations resulted in morphologically distinct types with acquisition of physical traits intermediate to the type specimens which may drive evolution of these species. 展开更多
关键词 HERBICIDE Hybrid Palmer amaranth RESISTANCE Spiny amaranth
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Differential Response of Biomass Production and Nitrogen Uptake of Vegetable Amaranth to Two Types of Poultry Manure from Nigeria and Canada 被引量:2
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作者 F. T. Olatoberu M. K. Idowu +1 位作者 J. A. Adepetu O. O. Akinremi 《Food and Nutrition Sciences》 2019年第6期694-711,共18页
Amaranthus cruentus is one of the sixty Amaranthus species of world. It is widely grown as a green leafy vegetable and for its grain in many tropical countries of Africa, Central and South American, Canada, Mexico and... Amaranthus cruentus is one of the sixty Amaranthus species of world. It is widely grown as a green leafy vegetable and for its grain in many tropical countries of Africa, Central and South American, Canada, Mexico and parts of Asia. Depleted soil fertility under intensive cultivation is a major limitation to production of the vegetable. The study investigated the effects of two types of poultry manure on biomass yield and nutrient uptake of Amaranth cruentus in a greenhouse at the University of Manitoba, Winnipeg, Manitoba, Canada in 2011. The experiment was a 2 × 3 × 3 factorial arranged into a Randomized Completely Block Design and replicated three times. The factors were two soil types, two sources of poultry manure and urea, and N rates at 0, 60 and 120 kg&sdot;N&sdot;ha&minus;1. Nitrogen uptake by the plants that treated with poultry manure from Canada (PMC) and Urea was 172.5 vs. 171.4 mg&sdot;pot&minus;1 and 169.5 vs. 163.7 mg&sdot;pot&minus;1 respectively which were significantly greater than the poultry manure from Nigeria (PMN), 100.6 mg&sdot;pot&minus;1 and 110.0 mg&sdot;pot&minus;1 for Red River and Glenhope soil series, respectively. Nitrogen uptake was similar at the N rates of 60 and 120 kg&sdot;N&sdot;ha&minus;1 (140.7 vs. 155.6 mg&sdot;pot&minus;1) in the Red River soil, while N uptake at 120 kg&sdot;N&sdot;ha&minus;1 was greater than at 60 kg&sdot;N&sdot;ha&minus;1 in Glenhope soil. Shoot dry matter of the vegetable grown in soils treated with PMC and urea was significantly greater than from PMN in Red River soil (10.1, 9.6 and 6.7 g&sdot;pot&minus;1) and in Glenhope soil (8.8, 8.1 and 6.4 g&sdot;pot&minus;1). Phosphorus, K, Ca and Mg uptake at 60 and 120 kg&sdot;</ 展开更多
关键词 amaranth POULTRY MANURE Urea Soil Properties Biomass Yield and NUTRIENTS UPTAKE
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Poly(amaranth) film based sensor for resolution of dopamine in the presence of uric acid:A voltammetric study 被引量:1
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作者 Umesh Chandra B.E.Kumara Swamy +4 位作者 Ongera Gilbert M.Pandurangachar Sathish Reddy S.Sharath Shankar B.S.Sherigara 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第12期1490-1492,共3页
The electropolymerized film of amaranth was prepared on the surface of graphite pencil electrode(GPE) using cyclic voltammetric technique.This poly(amaranth) film coated electrode exhibited an excellent electrocat... The electropolymerized film of amaranth was prepared on the surface of graphite pencil electrode(GPE) using cyclic voltammetric technique.This poly(amaranth) film coated electrode exhibited an excellent electrocatalytic activity towards the detection of dopamine(DA) in the presence of uric acid(UA) in 0.2 mol/L phosphate buffer solution at pH 7.0.The effect of interference study was carried out using differential pulse voltammetric technique.The poly(amaranth) modified GPE was applied for the detection of DA in dopamine injection with satisfactory results. 展开更多
关键词 Poly(amaranth Graphite pencil electrode DOPAMINE Uric acid SENSOR
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Effects of <i>Myrothecium verrucaria</i>on Two Glyphosate-Resistant <i>Amaranthus palmeri</i>Biotypes Differing in Betacyanin Content 被引量:1
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作者 Robert E. Hoagland Clyde Douglas Boyette +1 位作者 Robin H. Jordan Kenneth C. Stetina 《American Journal of Plant Sciences》 2020年第2期214-225,共12页
Previously we found two biotypes of Amaranthus palmeri (Palmer amaranth) in a population of this economically important weed that were resistant to glyphosate but differed with respect to pigmentation. One biotype was... Previously we found two biotypes of Amaranthus palmeri (Palmer amaranth) in a population of this economically important weed that were resistant to glyphosate but differed with respect to pigmentation. One biotype was typically red-pigmented (betacyanin) while the other was green, with no visual appearance of red hue on any plant part at any growth stage. We have also reported that a strain of Myrothecium verrucaria (MV) exhibited bioherbicidal activity against several important weeds including glyphosate-resistant Palmer amaranth. In greenhouse tests, MV was applied to these two biotypes (red and green) at two ages (3-week- and 6-week-old) and effects of this fungus monitored over a 5-day time course. Initial symptoms of MV (16 to 24 h after inoculation) were: epinastic curvature, wilting and development of lesions on leaves and stems. Generally, the younger plants tended to be more sensitive to MV than older plants. Bioherbicidal damage increased with time leading to necrosis and plant mortality and increasing disease progress. Severe loss of fresh weight occurred in both biotypes as compared to untreated plants. Results indicated that MV was effective on both biotypes, but effects on growth reduction and disease progression were more rapid and generally greater in the green biotype, suggesting that compounds responsible for red pigmentation may be more potent as defense against pathogen attack. 展开更多
关键词 BETALAIN BIOHERBICIDE Biological Weed Control Palmer amaranth Pigweed
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Kinetic and Thermodynamic Study for Fenton-Like Oxidation of Amaranth Red Dye 被引量:1
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作者 Z. M. Abou-Gamra 《Advances in Chemical Engineering and Science》 2014年第3期285-291,共7页
Oxidation by Fenton like reactions (Fe3+/H2O2) is economically process for destructive hazardous pollutants in waste water. The effects of different parameters such as, amaranth red dye, ferric chloride, hydrogen pero... Oxidation by Fenton like reactions (Fe3+/H2O2) is economically process for destructive hazardous pollutants in waste water. The effects of different parameters such as, amaranth red dye, ferric chloride, hydrogen peroxide concentrations, pH value of solution, temperature and the presence of inorganic ions (carbonate, nitrate, chloride) on oxidative decolorization of amaranth were investigated. Amaranth degradation by (Fe3+/H2O2) reagent was found to follow first order kinetic model. Under optimum condition, pH = 2.6 and [FeCl3] = 3.75 × 10-4 mol·dm-3, the amaranth in aqueous solution with an initial concentration of 5 × 10-5 mol·dm-3 was degraded by 95% within 6 minutes. Increasing temperature in the range of 298 - 308 K increases the rate of dye degradation. Thermodynamic constants, ΔH*, ΔS* and ΔG* were evaluated. The results implied that the oxidation process was favorable and endothermic. 展开更多
关键词 amaranth RED DECOLORIZATION Kinetics FENTON-LIKE
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Optimization of Extrusion Process for Producing High Antioxidant Instant Amaranth (<i>Amaranthus hypochondriacus</i>L.) Flour Using Response Surface Methodology
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作者 Jorge Milán-Carrillo Alvaro Montoya-Rodríguez +2 位作者 Roberto Gutiérrez-Dorado Xiomara Perales-Sánchez Cuauhtémoc Reyes-Moreno 《Applied Mathematics》 2012年第10期1516-1525,共10页
The objective of this research was to determine the best combination of extrusion process variables for the production of a high antioxidant extruded amaranth flour (EAF) suitable to elaborate a nutraceutical beverage... The objective of this research was to determine the best combination of extrusion process variables for the production of a high antioxidant extruded amaranth flour (EAF) suitable to elaborate a nutraceutical beverage. Extrusion operation conditions were obtained from a factorial combination of process variables: Extrusion temperature (ET, 70℃ - 130?℃) and screw speed (SS, 100 - 220 rpm). Response surface methodology was employed as optimization technique;both the numeric and graphical methods were applied to obtain maximum values for response variables [Antioxidant capacity (AoxC) and water solubility index (WSI)]. The best combination of extrusion process variables was: Extrusion tem- perature (ET) = 130℃/Screw speed (SS) = 124 rpm. The raw amaranth flour (RAF) and optimized extruded amaranth flour (EAF) had an antioxidant activity of 3475 and 3903 μmol Trolox equivalents/100 g sample (dw), respectively. A 200 mL portion of the beverage prepared with 22 g of optimized EAF contained 3.16 g proteins, 1.09 g lipids, 17.39 g carbohydrates and 92 kcal. This portion covers 25.3% and 16.9% of the daily protein requirements for children 1-3 and 4 - 8 years old, respectively. A 200 mL portion of the beverage from optimized EAF contributes with 15.5% - 25.5% of the recommended daily intake for antioxidants, respectively. The nutraceutical beverage was evaluated with an average acceptability of 8.4 (level of satisfaction between “I like it” and “I like it extremely”) and could be used for health promotion and disease prevention as an alternative to beverages with low nutritional/nutraceutical value. 展开更多
关键词 OPTIMIZATION amaranth FLOUR ANTIOXIDANT Activity Extrusion Nutraceutical Beverage
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