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Fatty Acid Accumulation in Seeds of Three Seed Pumpkin Cultivars
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作者 Ge Yu Wang Yun-li +2 位作者 Xu Wen-long Cui Chong-shi Qu Shu-ping 《Journal of Northeast Agricultural University(English Edition)》 CAS 2017年第4期19-24,共6页
In the literature there are many reports on the composition and properties of pumpkin seed oil; however, few is known about the effect of different stages of seed development on various fatty acid profiles in developi... In the literature there are many reports on the composition and properties of pumpkin seed oil; however, few is known about the effect of different stages of seed development on various fatty acid profiles in developing seeds. The objective of this study was to provide the changes of various fatty acid accumulations in seed oil obtained from the seeds of three pumpkin varieties belonging to the species Cucurbita maxima and Cucurbita pepo. Unsaturated acids(oleic and linoleic) were dominant in various fatty acids, which constituted 38.9%-49.1% and 29.4%-42.7% of the total fatty acids at seed maturity for three pumpkin varieties, respectively, while other fatty acid concentrations except for palmitic acid all did not reach 10%. Different varieties exhibited greater effect on various fatty acid contents and the total fatty acid contents in the seeds of pumpkin rather than the species. On the whole, palmitic acid profiles of the seed oil in three varieties all followed the fluctuant decrease during all the stages of seed development, but palmitoleic acid and the total fatty acid profiles of the seed oil in three varieties were just the opposite. Stearic, oleic and linoleic acid profiles of the seed oil in three varieties all experienced the third pattern that fluctuated during all the stages of seed development, but no significant differences in these three fatty acid concentrations were found from the beginning to the end. Linolenic acid concentrations of three varieties were on the decline and ultimately close to zero. Myristic and arachidic acid profiles of the seed oil followed different trends in three varieties. Among them, myristic and arachidic acid profiles of the seed oil of Yinhui-1 fluctuated downward all the time until seed maturity, but those of 0238-1 and Jinhui-2 completely changed oppositely. 展开更多
关键词 seed pumpkin Cucurbita maxima Cucurbita pepo seed oil fatty acid accumulation
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Pumpkin seeds as nutraceutical and functional food ingredient for future:A review
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作者 Arunima Singh Vivek Kumar 《Grain & Oil Science and Technology》 CAS 2024年第1期12-29,共18页
Pumpkin belongs to the family of Cucurbitaceae,which comprises several species that has economical as well as agronomical importance.All parts of pumpkin are edible and laden with beneficial neutraceutical compounds.P... Pumpkin belongs to the family of Cucurbitaceae,which comprises several species that has economical as well as agronomical importance.All parts of pumpkin are edible and laden with beneficial neutraceutical compounds.Pumpkin seeds are valuable source protein which can help in eradicating protein malnutrition and lipids(rich in PUFAs)contains essential as well as non essential fatty acids which prevents from various ailments like cancer and other cardiovascular diseases.Since,seeds of pumpkin are abundant in macro(magnesium,phosphorous,potassium,sodium and calcium)and micro minerals(iron,copper,manganese,zinc and selenium),they can be used as an incredible dietary supplement which in turn helps in curbing various deficiency disorders.This review enlightens the characteristics of pumpkin seeds,process of valorization of pumpkin seeds and the effect of processing on their nutritional composition which have been studied currently with the aim to use this wonder seeds for human wellbeing.Pumpkin seeds possess many bioactive compounds like polyphenols,flavonoids,phytosterols and squalene which makes it a lucrative raw material for pharmacological and food industries.Pumpkin seeds work as anti-depressant and helps majorly in the treatment of benign prostate hyperplasia(BHP).Daily consumption of pumpkin seeds can reduce the chances of Alzheimer's and Parkinson's disease.Pumpkin seeds are rich in tocopherols and can be used for oil extraction for edible purposes and utilized in other food formulations for future use. 展开更多
关键词 pumpkin seed Neutraceutical properties Nutritional composition Tocopherols SQUALENE Β-CAROTENE Waste valorization
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Design and Production of Infant Flours Based on Pumpkin Pulp Enriched with Cakes Extracted from Its Seeds
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作者 Koumba Hawa Toundoufedouno Kéloua Kourouma +2 位作者 Adama Moussa Sakho Karamoko Lansary Sylla Aboubacar Diallo 《Journal of Agricultural Chemistry and Environment》 2024年第2期192-207,共16页
The inclusion of composite flours in infant food at weaning time should be a priority for mothers. The aim of this project is to formulate infant flour based on pulp flour enriched with oilcake from these grains after... The inclusion of composite flours in infant food at weaning time should be a priority for mothers. The aim of this project is to formulate infant flour based on pulp flour enriched with oilcake from these grains after extraction of the oil. To do this, the elements were combined to obtain a regulatory formulation. Micro- and macronutrients, minerals, vitamins and tasting of the prepared porridge were determined. The results obtained were satisfactory. The moisture content of the fruit pulp was determined using oven-drying techniques: 92.2%, carbohydrates 6.00%, lipids 0.3%, ash 0.80%, proteins 1.10%, calcium 19.8%, phosphorus 42.6% and iron 0.4%. Furthermore, the carbohydrate content of flours composed of 5% insertion is 62.9 g to 48.8 g per 100 g, and the protein content of compound flours with 5% insertion is 15.9 g to 28.25 g per 100 g. On the other hand, the vitamin C and E contents of fresh pulp and oilcake are 25 mg, 13 mg and 21 mg respectively. However, only copper and β-carotene from 5% to 30% insertion remain invariant to the different insertion rates, with a value of 25 mg for copper and 0 µg for β-carotene. In addition, a variation in the degree of swelling of weaning flours compared with the standard from 3.95% at 5% insertion to 3.58 at 30% insertion was observed. The solubility of flours increases on the one hand with increases in the degree of insertion of the cakes. Flour formulated so many toward basicity. But the presence of traces of oil containing fatty acids can reduce this basicity. This study may be an alternative of industrial flours in infant nutrition. 展开更多
关键词 pumpkin seedS Oilcake Infant Flour Oil MICRONUTRIENTS
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Analysis of the Emissions and Performance of a Diesel Engine Using Pumpkin Seed Oil Methyl Ester with Different Injection Pressures
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作者 Surendrababu Kuppusamy Prabhahar Muthuswamy +1 位作者 Muthurajan Kumarasamy Sendilvelan Subramanian 《Fluid Dynamics & Materials Processing》 EI 2023年第4期1003-1014,共12页
Biodiesel fuel is a potential alternative energy source for diesel engines due to its physiochemical characteristics relatively similar to those of traditional diesel fuel.In this study,the performance,emission,and co... Biodiesel fuel is a potential alternative energy source for diesel engines due to its physiochemical characteristics relatively similar to those of traditional diesel fuel.In this study,the performance,emission,and combustion features of a mono cylinder DI diesel engine are assessed using 20%Pumpkin seed methyl ester(PSOME20)and considering varying injection pressures(200,220,240,and 260 bar).The considered Pumpkin seed oil is converted into pumpkin biodiesel by transesterification and then used as fuel.The findings demonstrate that the Brake Thermal Efficiency(BTE)of PSOME20 can be raised by 1.68%,and the carbon monoxide(CO),hydrocarbon(HC),and smoke emanations can be lowered,while oxides of nitrogen(NOx)emissions are increased at an injection pressure(IP)of 240 bar compared to the standard IP of 200 bar.The cylinder pressure and the Heat Release Rate(HRR)become higher at 240 bar,whereas the ignition delay is shortened with respect to PSOME20 at a normal IP of 200 bar. 展开更多
关键词 pumpkin seed biodiesel PERFORMANCE EMISSION diesel engine injection pressure
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Pumpkin seed ethanolic extract protects against escitalopram-induced reproductive toxicity in male mice
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作者 Agrawal Karuna Shahani Lata Bhatnagar Pradeep 《Asian pacific Journal of Reproduction》 2023年第2期71-80,共10页
Objective:To investigate the protective role of pumpkin seed ethanolic extract against escitalopram-induced reproductive toxicity in male mice.Methods:Swiss albino male mice were randomly divided into five groups with... Objective:To investigate the protective role of pumpkin seed ethanolic extract against escitalopram-induced reproductive toxicity in male mice.Methods:Swiss albino male mice were randomly divided into five groups with six mice in each group.Group Ⅰreceived normal water orally,Group Ⅱ,Ⅲ,Ⅳand Ⅴreceived escitalopram oxalate(10 mg/kg),pumpkin seed extract(300 mg/kg)plus escitalopram oxalate(10 mg/kg),escitalopram oxalate(20 mg/kg),and pumpkin seed extract(300 mg/kg)plus escitalopram oxalate(20 mg/kg),respectively.All test doses were continuously administered orally once daily per animal body weight for 30 days and 60 days.Body weight and sexual organ weight were evaluated on day 31 and 61.Effects of pumpkin seed extract on sperm parameters,biochemical parameters and histology of testis were also investigated.Results:Escitalopram 10 or 20 mg/kg caused reproductive toxicity in male mice after 30 and 60 days of treatment.However,simultaneous administration of escitalopram oxalate(10 or 20 mg/kg)with pumpkin seed extract(300 mg/kg)attenuated escitalopram-induced testicular toxicity.Significant increase in the body weight and relative organ weight was observed.Sperm count,sperm motility and viability significantly increased(P<0.05).The histopathological alterations caused by escitalopram was also ameliorated.Conclusions:Ethanolic extract of pumpkin seeds(300 mg/kg body weight)protects again reproductive toxicity induced by escitalopram.Therefore,dietary intake of pumpkin seed extract might be useful for male patients who expose to antidepressant drug due to depression. 展开更多
关键词 Escitalopram oxalate pumpkin seeds Testicular toxicity Sperm parameters Male Swiss albino mice
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Effect of the Extracts of Pumpkin Seeds on the Urodynamics of Rabbits:An Experimental Study 被引量:2
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作者 张旭 欧阳金芝 +2 位作者 章咏裳 周惜才 周四维 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 1994年第4期235-238,共4页
Pumpkin seeds were prepared into oil n-butyle alcohol and ether extracts.The effects of the three extracts on the urodynamics of rabbits were observed.It was concluded that the oil preparation could remarkably reduce ... Pumpkin seeds were prepared into oil n-butyle alcohol and ether extracts.The effects of the three extracts on the urodynamics of rabbits were observed.It was concluded that the oil preparation could remarkably reduce the bladder pressure ,increase the bladder compliance, reduce the urethral pressure. Other two kinds of preparations had no effect in this experimental. The mechanisms of the effect of oil preparation on the urodynamics and the prospect of clinical use was discussed. 展开更多
关键词 pumpkin seed URODYNAMICS RABBIT
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Treatment of Recurrent Aphthous Stomatitis by 100% Topical Pumpkin Seed Oil
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作者 Khalifa E. Sharquie Adil A. Noaimi Tuqa M. Latif 《Journal of Cosmetics, Dermatological Sciences and Applications》 2017年第4期324-335,共12页
Background: Recurrent aphthous stomatitis (RAS) is a major oral health problem, where its etiopathogenesis is not well understood. Accordingly, its therapy whether topical or systemic can induce clearance, but the rel... Background: Recurrent aphthous stomatitis (RAS) is a major oral health problem, where its etiopathogenesis is not well understood. Accordingly, its therapy whether topical or systemic can induce clearance, but the relapse rate is high. Objective: To use 100% topical pumpkin seed oil in RAS as it has many actions as anti-inflammatory and antioxidant effects. Patients and Methods: This single, blind, clinical, therapeutic trial was conducted in the Department of Dermatology-Baghdad Teaching Hospital, Baghdad, Iraq, during February 2015-August 2016. Twenty-five patients with RAS were included in this work. After full history and clinical examination, the clinical diagnosis was established. Oral clinical manifestation index score (OCMI) was carried out before, during and after stopping therapy to assess the different parameters of this score. 100% Topical pumpkin seed oil was given two times daily for 3 months during which short term assessment for each patient was done by using OCMI before, after 4 days and after 8 days of therapy in addition to assessing the mean size of largest diameter of ulcers in each visit to evaluate the therapeutic efficacy of the therapy, while long term assessment of the OCMI was done every month for 3 months after starting of the therapy to evaluate the prophylactic effect of the therapy. After 3 months, pumpkin seed oil was stopped and assessment of OCMI was done monthly for another 3 months to evaluate the remission action of pumpkin seed oil. Results: Twenty-five patients were included in this study: 15 (60%) males and 10 (40%) females. While their ages ranged from 9 - 60 (27.48 ± 11.97) years. The mean of OCMI before pumpkin seed oil therapy was ranged from 9 - 15 (12.96 ± 1.42), while after the therapy the mean started to decline to lower level within 4 days of therapy and was statistically significant (p < 0.0001) and continued to decline significantly till the end of third month of therapy (p < 0.0001). The percent reduction was 79.30% after 4 days of therapy and 94.38% after 8 days of therapy. After stopping therapy, the mean of OCMI started to increase, but it is remained statistically highly significant (p < 0.0001) at the end of third months after stopping therapy when it is compared with baseline mean of OCMI. Conclusion: Pumpkin seed oil had an effective therapeutic and prophylactic action against RAS, in addition, it induced remission for at least 3 months after stopping therapy. No local or systemic side effects were observed during the course of therapy. 展开更多
关键词 RECURRENT APHTHOUS STOMATITIS pumpkin seed Oil Therapy
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Uromedic^(■) Pumpkin Seed Derived Δ7-Sterols, Extract and Oil Inhibit 5α-Reductases and Bind to Androgen Receptor in Vitro
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作者 Stefan Heim Stephanie Seibt +1 位作者 Heike Stier Margret I More 《Pharmacology & Pharmacy》 2018年第6期193-207,共15页
Dihydrotestosterone (DHT) is implicated in the development of benign prostate hyperplasia (BPH). We investigated if Uromedic? pumpkin (variety of Cucurbita pepo L. convar. citrullinina GREB. var. styriaca GREB) seed s... Dihydrotestosterone (DHT) is implicated in the development of benign prostate hyperplasia (BPH). We investigated if Uromedic? pumpkin (variety of Cucurbita pepo L. convar. citrullinina GREB. var. styriaca GREB) seed soft extract (active ingredients of GRANUFINK? Prosta forte 500 mg), seed oil and isolated Δ7-sterols could inhibit the conversion of [1,2,6,7-3H(N)]-testosterone to DHT by 5α-reductases. Also, we tested competition with [3H]-DHT for binding to the androgen receptor (AR). Pumpkin seed oil and pumpkin seed soft extract were identified as moderately active inhibitors of 5α-R1 and 5α-R2, with almost similar inhibitory capacities (IC50 5 mg/ml for 5α-R1 and about IC50 = 6 mg/ml for 5α-R2). The isolated Δ7-sterols were more active inhibitors (IC50 = 0.3 mg/ml for 5α-R1, IC50 = 1.0 mg/ml for 5α-R2). All three test compounds bound to the AR dose-dependently, with strong binding by Δ7-sterols (IC50 = 0.2 mg/ml) and weaker binding by pumpkin seed oil (IC50 = 0.4 mg/ml) and pumpkin seed soft extract (IC50 = 1.1 mg/ml). We propose that inhibition of 5α-reductases and competitive binding to the AR are mechanisms of action, by which the Uromedic? pumpkin seed derived test compounds, most specifically Δ7-sterols, counteract DHT and thereby exert clinically positive effects on the prostate, as well as bladder-strengthening effects. 展开更多
关键词 5-Alpha-Reductases 5α-R1 and 5α-R2 Androgen Receptor DIHYDROTESTOSTERONE Uromedic? pumpkin seed Oil and Soft Extract (Delta-7) Δ7-Sterols
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南瓜种子姿态约束定向组合式排种器设计与试验
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作者 俞亚新 王炎 +1 位作者 周俊伟 潘一隆 《农业机械学报》 EI CAS CSCD 北大核心 2024年第6期121-132,158,共13页
为实现南瓜种子定向播种,提出先调整南瓜种子运动姿态再进行定向的组合式定向方法,设计了一种南瓜种子组合式定向排种器。该定向装置的关键部件包括限位清种板和导向板两部分。基于南瓜种子几何特性确定了限位清种板的结构参数。建立南... 为实现南瓜种子定向播种,提出先调整南瓜种子运动姿态再进行定向的组合式定向方法,设计了一种南瓜种子组合式定向排种器。该定向装置的关键部件包括限位清种板和导向板两部分。基于南瓜种子几何特性确定了限位清种板的结构参数。建立南瓜种子定向过程的运动学方程,明确了南瓜种子定向过程中姿态变化与导向板结构参数的关系,确定了导向板结构参数。利用CFD-DEM耦合法,验证了南瓜种子组合式排种器定向排种的可行性,确定了排种盘转速取值范围。搭建试验台,以平躺吸附率为试验指标,通过单因素试验确定了排种盘型孔直径。以单粒率为试验指标,通过单因素试验确定了负压和排种盘型孔数取值范围。选取负压、排种盘型孔数、排种盘转速为试验因素,以单粒率、定向成功率为试验指标,进行了三因素三水平二次中心组合试验,得出影响排种器单粒率的主次因素为负压、排种盘型孔数、排种盘转速,影响排种器定向成功率的主次因素为排种盘转速、负压、排种盘型孔数。对优化后参数进行田间验证试验,结果表明,当排种盘型孔数为16、负压为10kPa、排种盘转速为4r/min时,单粒率为94.7%,定向成功率为82.7%,南瓜种子落入穴盘的正负偏转角度为18.5°。 展开更多
关键词 南瓜种子 定向播种 排种器 姿态约束定向组合式 CFD-DEM
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南瓜籽蛋白-卡拉胶乳液脂肪替代物对肌原纤维蛋白凝胶特性的影响
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作者 郑爽 李艳青 +2 位作者 李博 周天硕 韩齐 《食品工业科技》 CAS 北大核心 2024年第16期138-145,共8页
为进一步开发蛋白-多糖复合脂肪替代物在低脂肉制品中的应用,本研究以南瓜籽蛋白(Pumpkin Seed Protein,PSP)和卡拉胶为原料制备复合乳液脂肪替代物,并将其加入到肌原纤维蛋白(Myofibrillar Protein,MP)中形成热诱导凝胶,通过对凝胶水... 为进一步开发蛋白-多糖复合脂肪替代物在低脂肉制品中的应用,本研究以南瓜籽蛋白(Pumpkin Seed Protein,PSP)和卡拉胶为原料制备复合乳液脂肪替代物,并将其加入到肌原纤维蛋白(Myofibrillar Protein,MP)中形成热诱导凝胶,通过对凝胶水分分布、质构特性、微观结构、流变学特性等指标的测定,研究不同添加量下PSP-卡拉胶形成的复合乳液对MP凝胶特性的影响。结果表明,PSP-卡拉胶复合乳液添加量为50%显著提高了凝胶持水性和凝胶强度(P<0.05),MP凝胶的质构特性得到了改善,凝胶蒸煮损失和冻融稳定性显著降低(P<0.05)。流变学特性表明,凝胶的G'始终高于G'',能够形成具有弹性的凝胶结构,并且表现出较为致密均一的微观结构。因此,PSP-卡拉胶复合乳液添加量为50%对肌原纤维蛋白的凝胶性能有较好的改善。 展开更多
关键词 南瓜籽蛋白 卡拉胶 脂肪替代物 肌原纤维蛋白 凝胶性
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籽用南瓜联合收获机设计
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作者 孙毅 《农机使用与维修》 2024年第8期12-15,共4页
针对黑龙江省籽用南瓜种植面积不断扩大,收获环节相关机械设备应用规模也逐步增加这一现状,结合籽用南瓜种植特点,设计一种自走式籽用南瓜联合收获机。该机可一次完成籽用南瓜的集条、捡拾破碎、分离取籽以及籽实收集作业,减少作业机具... 针对黑龙江省籽用南瓜种植面积不断扩大,收获环节相关机械设备应用规模也逐步增加这一现状,结合籽用南瓜种植特点,设计一种自走式籽用南瓜联合收获机。该机可一次完成籽用南瓜的集条、捡拾破碎、分离取籽以及籽实收集作业,减少作业机具数量及机具进地次数,降低人工成本。该机具有结构简单、配置合理、造价较低和用工量少等特点。 展开更多
关键词 籽用南瓜联合收获机 主要结构 工作原理 应用前景
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低温锡箔烘烤和微波处理对南瓜籽油脂肪酸组成变化及货架期影响的研究
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作者 薛山 《中国粮油学报》 CAS CSCD 北大核心 2024年第3期110-117,共8页
比较低温锡箔烘烤和微波处理2种常用加工方式对南瓜籽油储藏期间中性脂肪酸、磷脂脂肪酸与总脂肪酸组成的影响,同时,通过测定南瓜籽油酸价(Acid value,AV)与过氧化值(Peroxide value,POV)的变化,结合一级化学反应动力学方程和Arrhenius... 比较低温锡箔烘烤和微波处理2种常用加工方式对南瓜籽油储藏期间中性脂肪酸、磷脂脂肪酸与总脂肪酸组成的影响,同时,通过测定南瓜籽油酸价(Acid value,AV)与过氧化值(Peroxide value,POV)的变化,结合一级化学反应动力学方程和Arrhenius方程建立南瓜籽油储藏动力学模型预测其货架期变化。低温锡箔烘烤和微波预处理的南瓜籽油总脂肪酸中PUFA相对含量均较丰富,从脂肪酸组成角度来看耐储性良好,低温锡箔烘烤组较微波组货架期更长。 展开更多
关键词 低温锡箔烘烤 微波 南瓜籽油 脂肪酸组成 货架期
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不同加工方式的南瓜籽油的储藏稳定性研究
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作者 钟秋 孔凡 +3 位作者 周力 洪坤强 雷芬芬 何东平 《食品研究与开发》 CAS 2024年第11期89-97,共9页
为探究南瓜籽油的储藏稳定性,对比冷榨(cold pressing,CP)、微波预处理-压榨(microwave pretreatmentpressing,MP)、超临界二氧化碳萃取(supercritical fluid extraction,SFE)3种加工方式制得的南瓜籽油在储藏过程中理化性质、油脂伴随... 为探究南瓜籽油的储藏稳定性,对比冷榨(cold pressing,CP)、微波预处理-压榨(microwave pretreatmentpressing,MP)、超临界二氧化碳萃取(supercritical fluid extraction,SFE)3种加工方式制得的南瓜籽油在储藏过程中理化性质、油脂伴随物含量和自由基清除能力的变化。结果表明:室温储藏90 d,SFE南瓜籽油酸价、CP南瓜籽油过氧化值变化最大,分别提高了91.64%和171.74%,p-茴香胺值变化不大;MP南瓜籽油总酚、CP南瓜籽油总甾醇和生育酚损失率最大。MP南瓜籽DPPH和ABTS^(+)自由基清除能力均下降最多。加速氧化储藏28 d,CP南瓜籽油酸价、过氧化值、p-茴香胺值的增幅最显著,MP南瓜籽油的总酚损失大,3种工艺南瓜籽油甾醇减少的比例相差不大。CP南瓜籽自由基清除能力下降最多,DPPH和ABTS^(+)自由基清除能力分别下降了38.48%和50.67%。加速氧化过程中SFE南瓜籽油的稳定性优于CP和MP南瓜籽油。 展开更多
关键词 南瓜籽油 储藏稳定性 油脂伴随物 微波预处理 超临界二氧化碳萃取
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南瓜子饮片标准汤剂的制备及质量标准的研究
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作者 唐双燕 魏家保 +4 位作者 蔡素琴 詹智洪 黄凯伟 赵伟志 张辉 《广东药科大学学报》 CAS 2024年第1期35-42,共8页
目的 制备南瓜子饮片标准汤剂,建立其质量评价方法,为制定南瓜子配方颗粒质量标准提供参考依据。方法 按照传统煎煮方法制备15批南瓜子饮片标准汤剂,测定其出膏率范围,并建立了饮片标准汤剂质量标准,包括采用薄层色谱法(TLC)以丙氨酸为... 目的 制备南瓜子饮片标准汤剂,建立其质量评价方法,为制定南瓜子配方颗粒质量标准提供参考依据。方法 按照传统煎煮方法制备15批南瓜子饮片标准汤剂,测定其出膏率范围,并建立了饮片标准汤剂质量标准,包括采用薄层色谱法(TLC)以丙氨酸为对照进行定性鉴别,采用高效液相色谱法(HPLC)建立特征图谱及质量分数测定方法,并计算其转移率。结果 15批南瓜子饮片标准汤剂出膏率范围为10.4%~18.3%,均值为15.1%;薄层色谱斑点清晰,分离度好,比移值适当;苯丙氨酸质量分数范围为0.56~1.99 mg/g,均值为1.43 mg/g,转移率范围为42.7%~86.1%,均值为69.7%,所建立的特征图谱呈现13个特征峰,相似度均大于0.9。结论 建立了南瓜子饮片标准汤剂的质量标准,测定方法全面、准确,可为南瓜子配方颗粒的标准制定提供参考。 展开更多
关键词 南瓜子 饮片标准汤剂 丙氨酸 苯丙氨酸 特征图谱 薄层鉴别
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南瓜籽壳对不同生长阶段西杂肉牛生长性能、血清生化和免疫指标及激素水平的影响
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作者 张俊丽 侯鹏霞 梁小军 《畜牧与饲料科学》 2024年第1期20-24,35,共6页
[目的]研究日粮中添加南瓜籽壳对不同生长阶段西杂肉牛生长性能、血清生化和免疫指标及激素水平的影响。[方法]选取体况良好的西门塔尔杂交公牛共40头,按照体重分为5组,分别为试验1组(300 kg左右)、试验2组(400 kg左右)、试验3组(500 k... [目的]研究日粮中添加南瓜籽壳对不同生长阶段西杂肉牛生长性能、血清生化和免疫指标及激素水平的影响。[方法]选取体况良好的西门塔尔杂交公牛共40头,按照体重分为5组,分别为试验1组(300 kg左右)、试验2组(400 kg左右)、试验3组(500 kg左右)、试验4组(600 kg左右)和试验5组(700 kg左右),每组8头,分栏饲养,基础日粮中均添加10%的南瓜籽壳。试验期为90 d,预试期20 d,正试期70 d。记录各组肉牛试验期间体重及采食情况,计算平均日增重、平均日采食量和平均料重比;试验结束时采集血液样本制备血清,测定血清生化指标、免疫指标及激素水平。[结果]随着肉牛体重的增加,日采食量逐渐增加,试验4组和5组平均日采食量显著(P<0.05)高于其他组;试验1组平均料重比最低,显著(P<0.05)低于其他组。试验4组血清总蛋白(TP)、尿素氮(BUN)含量显著(P<0.05)高于试验1组、3组。试验2组血清免疫球蛋白M(IgM)含量显著(P<0.05)高于其他组。试验1组血清皮质醇(COR)水平显著(P<0.05)高于试验3组、4组、5组,试验5组血清降钙素(CT)水平显著(P<0.05)高于其他各组,试验4组、5组C反应蛋白水平显著(P<0.05)高于试验1组。[结论]西杂肉牛日粮中添加南瓜籽壳,可增加采食量,提高机体蛋白质利用率,对增强动物免疫力具有一定作用,可作为一种粗饲料资源进行开发利用。 展开更多
关键词 南瓜籽壳 西杂肉牛 生长性能 血清生化指标 血清免疫指标 血清激素水平
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浅谈南瓜籽蛋白粉的制取工艺
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作者 陈杉 朱云 《粮食与食品工业》 2024年第1期40-42,共3页
南瓜籽蛋白粉营养价值丰富,属于一种优质的保健型植物蛋白资源,是当前的一个开发热点。本文根据目前传统的粕蛋白制取工艺,设计了一个融合冷榨法和溶剂浸出法两种传统方法的新工艺,严格控制生产过程中的温度,避免蛋白变性,保留其生物活... 南瓜籽蛋白粉营养价值丰富,属于一种优质的保健型植物蛋白资源,是当前的一个开发热点。本文根据目前传统的粕蛋白制取工艺,设计了一个融合冷榨法和溶剂浸出法两种传统方法的新工艺,严格控制生产过程中的温度,避免蛋白变性,保留其生物活性和营养,以期适用于工厂的规模生产。 展开更多
关键词 南瓜籽蛋白粉 制取工艺 先冷榨后浸出
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南瓜籽饼粕粉制备高含量蛋白肽的工艺优化分析
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作者 张良明 田斌 苏亚庆 《现代食品》 2024年第4期129-133,共5页
本研究采用优选酶解法,通过单因素实验,对加酶量、酶解pH、酶解倍量、酶解时间进行正交试验设计,以南瓜籽蛋白含量的提取率为指标,旨在探讨制备南瓜籽蛋白肽的最佳工艺参数。结果表明,在本研究采取的最佳工艺条件下,制备的南瓜籽粗蛋白... 本研究采用优选酶解法,通过单因素实验,对加酶量、酶解pH、酶解倍量、酶解时间进行正交试验设计,以南瓜籽蛋白含量的提取率为指标,旨在探讨制备南瓜籽蛋白肽的最佳工艺参数。结果表明,在本研究采取的最佳工艺条件下,制备的南瓜籽粗蛋白含量≥90%(以干基计,N×6.5%),蛋白肽含量≥80%(以干基计)。因此,本研究结果可以为南瓜籽的开发与应用提供参考。 展开更多
关键词 南瓜籽蛋白肽 酶解 膜分离
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Genetic Variation among <i>Cucurbita pepo</i>Accessions Varying in Seed Nutrition and Seed Size 被引量:1
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作者 Geoffrey Meru Dayana Leyva +3 位作者 Vincent Michael Riphine Mainviel Marie Dorval Yuqing Fu 《American Journal of Plant Sciences》 2019年第9期1536-1547,共12页
Pumpkin seed (Cucurbita pepo L.) is a nutritionally valuable food and a significant source of income globally. Pumpkin seeds are rich in oil, protein, unsaturated fatty acids and tocopherols, which are associated with... Pumpkin seed (Cucurbita pepo L.) is a nutritionally valuable food and a significant source of income globally. Pumpkin seeds are rich in oil, protein, unsaturated fatty acids and tocopherols, which are associated with improved human health. Understanding the genetic diversity among pumpkin accessions varying in seed nutrition traits is necessary for designing sound breeding strategies for developing superior cultivars. In the current study, 26 simple sequence repeats (SSR) markers were used to assess genetic relatedness among 29 C. pepo accessions varying in seed oil, seed protein, seed-coat phenotype, seed size and fatty acid composition. The SSR markers revealed 102 alleles averaging 3.92 alleles per loci and mean polymorphic information content (PIC) of 0.44. Eleven of the markers had a PIC of ≥0.5. Ward dendrogram and principle component analysis based on seed traits grouped the genotypes into two major clusters corresponding to subspecies pepo and texana, with all the reduced-hull accessions grouping within the former. Collectively, this data suggests wide phenotypic (seed traits) and genotypic variation within C. pepo that may be exploited to develop superior reduced-hull cultivars. 展开更多
关键词 pumpkin seed Oil seed Protein Fatty Acid Composition seed Size SSR Markers DNA Alleles Phylogenetic Tree Genetic Distance
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黑龙江省籽用南瓜蔓枯菌潜在致病基因挖掘
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作者 赵茜 《黑龙江农业科学》 2023年第6期38-44,共7页
为了了解籽用南瓜蔓枯病的致病机制,前期鉴定出黑龙江省籽用南瓜蔓枯病的主要病原为Stagonosporopsis cucurbitacearum(Sc.)。在此基础上完成了Sc.1(生长在南瓜叶片上的Sc.菌株)和Sc.2(生长在PDA培养基上的Sc.菌株)组间样品的转录组差... 为了了解籽用南瓜蔓枯病的致病机制,前期鉴定出黑龙江省籽用南瓜蔓枯病的主要病原为Stagonosporopsis cucurbitacearum(Sc.)。在此基础上完成了Sc.1(生长在南瓜叶片上的Sc.菌株)和Sc.2(生长在PDA培养基上的Sc.菌株)组间样品的转录组差异表达分析。共获得319个差异表达基因,其中190个基因下调,129个基因上调;根据GO功能分析,挖掘到58个差异表达基因(DEGs)可能与致病相关;KEGG分析结果显示,挖掘与致病相关的KEGG通路有7个;挖掘到54个编码分泌蛋白基因是差异表达的;与PHI数据库进行比对,共识别到了2869个基因有较高同源性,其中有96个是差异表达基因;在代谢过程的功能通路中共发现3327个Sc.基因,结合转录组数据发现86个代谢相关基因差异表达。上述结果表明,真菌寄生在南瓜叶片上的代谢或生物合成途径相关基因的表达量与寄生在PDA培养基上的基因表达量存在着显著差异,这或许是影响Sc.致病性的重要因素。 展开更多
关键词 黑龙江省 籽用南瓜 蔓枯病 致病基因
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不同烘制预处理方式下裸仁南瓜籽烘烤工艺的比较 被引量:2
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作者 刘战霞 吴宏 +4 位作者 郭慧静 李斌斌 吴洪斌 贾文婷 杨慧 《现代食品科技》 CAS 北大核心 2023年第1期213-221,共9页
为探究不同烘制预处理方式下对裸仁南瓜籽烘烤工艺的影响,对裸仁南瓜籽进行晒干(Sun Dried Unroasted,SDU)、湿盐烤(Wet Salted Roasted,WSR)、干盐烤(Dry Salted Roasted,DSR)、无盐烤(Unsalted Roasted,US)4种不同烘制预处理后,测定... 为探究不同烘制预处理方式下对裸仁南瓜籽烘烤工艺的影响,对裸仁南瓜籽进行晒干(Sun Dried Unroasted,SDU)、湿盐烤(Wet Salted Roasted,WSR)、干盐烤(Dry Salted Roasted,DSR)、无盐烤(Unsalted Roasted,US)4种不同烘制预处理后,测定并分析烘烤南瓜籽的基本成分、色泽、质构、电子鼻和气味感官评价、脂肪酸、矿物质、总酚和生育酚、抗氧化活性的含量。结果表明:湿盐烤预处理条件下,基本营养成分保留效果最佳,总脂肪酸含量达99.46 mg/100 g,不饱和脂肪酸占比79.50%;五种矿物质总含量达到203.96 mg/100 g,总酚和生育酚含量分别为2.65、11.65 mg/g;·OH、DPPH·和ABTS+·清除率分别为55.36%、69.25%和85.12%,均显著高于其他处理组(p<0.05)。综上所述,湿盐浸是裸仁南瓜籽烘制过程的一个重要步骤,湿盐烤工艺为最适宜的南瓜籽烘烤预处理方式。因此,湿盐烤制的裸仁南瓜籽可制成感官品质优、风味好、抗氧化能力强的植物蛋白食品。 展开更多
关键词 预处理 裸仁南瓜籽 加工工艺 抗氧化特性
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