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Effect of Butternut Squash (Cucurbita moschata) Seed Powder on the Chemical and Rheological Properties of Stirred Cultured Camel Milk and Yoghurt
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作者 Collins K. Kangogo Patrick S. Muliro Joseph O. Anyango 《Food and Nutrition Sciences》 CAS 2024年第7期576-593,共18页
Research shows that producing fermented camel milk is hard because of the milk’s inability to form a firm coagulum, attributed to low levels of κ-casein and ꞵ-lactoglobulin and the large casein micelle size, leading... Research shows that producing fermented camel milk is hard because of the milk’s inability to form a firm coagulum, attributed to low levels of κ-casein and ꞵ-lactoglobulin and the large casein micelle size, leading to a weak network of casein formation. In an effort to address this issue, researchers turned to corn starch as a thickening agent, discovering that a concentration of 2.0% effectively improved the viscosity and significantly reduced syneresis in stirred camel milk yoghurt and cultured camel milk. This study explores alternatives to corn starch, focusing on butternut squash seeds as a promising substitute due to their hydrocolloid composition. By incorporating butternut squash (Cucurbita moschata) seed powder (BSSP) as a thickening agent, this study aimed at enhancing the chemical and rheological properties of stirred camel milk yoghurt and cultured camel milk. Fermented camel milk was prepared using 4 litres of camel milk, 2% starter cultures (thermophilic culture for yoghurt and mesophilic aromatic culture for stirred cultured camel milk) and BSSP 0.0% (negative control), 0.4%, 0.8%, 1.2%, 1.6%, 2.0% mixed with 0.4% gelatin. 2.0% corn starch mixed with 0.4% gelatin was used as a standard for comparison. Results showed that increasing the BSSP level significantly (p < 0.05) decreased the moisture content while increasing the total solid content of stirred fermented camel milk products. There was an increase in ash content with an increase in BSSP levels. There was a significant (p < 0.05) reduction in the pH, with an increase in BSSP levels in stirred fermented camel milk samples. Increasing the concentration of BSSP from 0.4% to 2.0% resulted in a significant (p < 0.05) increase in viscosity and a reduction in syneresis of stirred camel milk yoghurt and stirred cultured camel milk samples. This study demonstrated that BSSP effectively enhances the viscosity, reduces syneresis and increases acidity in stirred fermented camel milk products during storage. 展开更多
关键词 Corn Starch Butternut Squash Seed powder GELATIN Stirred Camel Milk Yoghurt Stirred Cultured Camel Milk
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Direct Correlation among Telomere Length, Cellular Aging, and Rejuvenation Effects of Honey Child Powder
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作者 Naofumi Shiomi Keiko Watanabe +2 位作者 Yuki Fujiwara Takae Yamasaki Hideto Matsuyama 《Journal of Biosciences and Medicines》 2024年第7期55-70,共16页
Purpose: Telomere length (TL) is an indicator of age;however, hormonal influences complicate individual aging. It remains unclear whether TL shortening is a direct factor in both individual and cellular aging. Therefo... Purpose: Telomere length (TL) is an indicator of age;however, hormonal influences complicate individual aging. It remains unclear whether TL shortening is a direct factor in both individual and cellular aging. Therefore, we examined the direct relationship between TL and cellular senescence at the cellular level. Methods: Telomerase activity, TL, and gene expression were measured in cultured human lung-, fetal-, and skin-derived fibroblasts, human skin keratinocytes, and telomerase reverse transcriptase (TERT) gene-immortalized cells using detection kits, Cawthon’s method, and reverse transcription-quantitative polymerase chain reaction, respectively. Novel substances that elongate telomeres were screened to confirm cell rejuvenation effects. Results: Long-term cell culture of TIG-1-20 normal human fibroblasts resulted in TL shortening, decreased division rate, and senescence progression, whereas in OUMS-36T-2 cells, TL elongation via TERT gene transfer increased the division rate, reduced endoplasmic reticulum stress, and upregulated genes associated with young individuals, indicating that cellular rejuvenation occurs via TL elongation. In addition, a honey child powder (HCP) extract was found through screening, and the HCP extract strongly suppressed the menin gene, resulting in increased telomerase activity and extended cell lifespan. Upon addition of the HCP extract to skin fibroblasts, gene expression of moisturizing components, including collagen, hyaluronic acid, and elastin, increased, and exhibited a rejuvenating effect with an increase in elastin amount. Conclusions: TL elongation or shortening is involved in cell proliferation rate and cellular aging, and TL elongation rejuvenates cells. In addition, HCP extract has a rejuvenating effect on cells and is expected to be a rejuvenating compound. 展开更多
关键词 TELOMERE Cellular Aging Telomerase Reverse Transcriptase Gene REJUVENATION Honey Child powder
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Hexavalent Chromium Cr (VI) Removal from Water by Mango Kernel Powder
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作者 Amadou Sarr Gning Cheikh Gaye +3 位作者 Antoine Blaise Kama Pape Abdoulaye Diaw Diène Diégane Thiare Modou Fall 《Journal of Materials Science and Chemical Engineering》 2024年第1期84-103,共20页
Metal trace elements (MTE) are among the most harmful micropollutants of natural waters. Eliminating them helps improve the quality and safety of drinking water and protect human health. In this work, we used mango ke... Metal trace elements (MTE) are among the most harmful micropollutants of natural waters. Eliminating them helps improve the quality and safety of drinking water and protect human health. In this work, we used mango kernel powder (MKP) as bioadsorbent material for removal of Cr (VI) from water. Uv-visible spectroscopy was used to monitor and quantify Cr (VI) during processing using the Beer-Lambert formula. Some parameters such as pH, mango powder, mass and contact time were optimized to determine adsorption capacity and chromium removal rate. Adsorption kinetics, equilibrium, isotherms and thermodynamic parameters such as ΔG˚, ΔH˚, and ΔS˚, as well as FTIR were studied to better understand the Cr (VI) removal process by MKP. The adsorption capacity reached 94.87 mg/g, for an optimal contact time of 30 min at 298 K. The obtained results are in accordance with a pseudo-second order Freundlich adsorption isotherm model. Finally FTIR was used to monitor the evolution of absorption bands, while Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) were used to evaluate surface properties and morphology of the adsorbent. 展开更多
关键词 ADSORPTION CHROMIUM Mango Kernel powder Spectroscopy Analysis Water Treatment
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Physicochemical Characterisation of Flours from Local Cereals and Powder from Cassava (Manihot esculenta Crantz) Leaves Varieties Cultivated in the Northern-Cameroon in Order to Supplement Infant Flours
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作者 Mathieu Barbi Charles Touwang +2 位作者 Emmanuel Panyoo Akdowa Augustin Goudoum Armand Abdou Bouba 《Open Journal of Applied Sciences》 2024年第8期2009-2026,共18页
The aim of the present study was to investigate on the inventory and determination of the nutritional value of cereals flour and cassava leaves powder in order to analyse their use in the production of infant flour. I... The aim of the present study was to investigate on the inventory and determination of the nutritional value of cereals flour and cassava leaves powder in order to analyse their use in the production of infant flour. In this paper, a A survey to identify the cereals used in the preparation of infant porridge in the Northern Cameroon was done by using 447 mothers having children between 06 and 59 months from areas (Gbakoungue, Sassa-Mbersi, Sanguere-Ngal and Kotkong-Wouldata) with high rate on malnourished children. Flour was prepared from the most preponderant cereals and Cassava leaves powder from varieties identified by the Regional Centre of Agricultural Research (CRRA) of Wakwa and local population. Flour and powder samples obtained were subjected to chemical composition analysis. Parameters analysed were crude proteins, total carbohydrates, ash, total fats, total phenols, total tannins, total carotenoids, vitamin C or cyanide. Also Iron, calcium and zinc were determined. The results revealed that white maize (62%) was the main cereal used in the preparation of infant porridge followed respectively by red sorghum, white rice and muskwari. Ten cassava varieties were identified: three (03) by CRRA (TME, 96/1/14 and IRAD 4115) and seven (south, gambada, sweet, Benin, six months, M. glaziovii and grouna) by local population. Amongst cereals flour, those from white maize indicated high protein (10.09%), carbohydrates (84.46%) and total fat (7.46%) contents. The powder from 96/14/14 cassava variety showed high amount of iron (11.98 mg/100g), calcium (751.02 g/100g) and low cyanide content (1.21 ppm) amongst all the cassava leaves powder samples. The supplementation of white maize flour by cassava leaves powder from 96/14/14 variety could therefore be recommended for the preparation of infant flours. 展开更多
关键词 Infant Flour Cereals Flour Cassava Leaves powder Chemical Composition Northern Cameroon
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芦笋粉添加对面团和面条特性的影响 被引量:1
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作者 施建斌 隋勇 +5 位作者 熊添 蔡沙 范传会 陈学玲 王红旗 梅新 《食品工业科技》 CAS 北大核心 2024年第5期62-69,共8页
为了实现芦笋及其副产物的全质化利用,将芦笋通过干燥制备成芦笋粉并用于面条的制备。系统地研究了芦笋粉添加量(0~10%)对混合粉溶剂保持力,面团的吸水率、形成时间、稳定时间、弱化度、回生值,面条蒸煮时间、吸水率、断条率、损失率、... 为了实现芦笋及其副产物的全质化利用,将芦笋通过干燥制备成芦笋粉并用于面条的制备。系统地研究了芦笋粉添加量(0~10%)对混合粉溶剂保持力,面团的吸水率、形成时间、稳定时间、弱化度、回生值,面条蒸煮时间、吸水率、断条率、损失率、剪切力、拉伸强度,及蛋白质二级结构和淀粉消化特性的影响。研究发现随着芦笋粉添加量的增加混合粉的溶剂保持力增加,蒸馏水、蔗糖、碳酸钠和乳酸SRC在芦笋粉添加量为10%时分别为79.30%、111.92%、99.07%和94.34%;面团的弱化度C1-C2值随芦笋粉添加量的增加而增加,在添加量10%最大,为799.33 mN·m,而回生值C5-C4随芦笋粉添加量的增加而减小,在添加量10%最小,为1060.33 mN·m。随着芦笋粉添加量的增加面条的蒸煮断条率、吸水率和损失率之间无显著差异(P>0.05),而蒸煮时间、拉伸强度、拉伸距离和剪切力都呈下降的趋势。随着芦笋粉添加量的增加面条中巯基含量逐渐增加,二硫键逐渐降低,在添加量10%时分别为8.37和0.59μmol/g。在芦笋粉添加量8%~10%时血糖生成指数显著降低(P<0.05),但还属于高GI食品。综合芦笋添加对面团特性,面条蒸煮特性、质构特性和淀粉消化特性的影响,芦笋粉添加量6%时挂面的品质可以接受。该研究将为芦笋副产物全质化利用提供重要的理论的依据,也为高纤、高活性物质营养面条的开发提供了思路。 展开更多
关键词 芦笋粉 面条 蒸煮特性 质构特性 淀粉消化
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菊钩逍遥散对耳石症手法复位后肝郁型残余头晕患者血浆ET-1、CGRP及NPY水平的影响 被引量:2
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作者 徐红霞 王庆全 +2 位作者 盛国强 邹广华 汪常伟 《中国中医急症》 2024年第1期119-122,共4页
目的观察菊钩逍遥散治疗耳石症手法复位后肝郁型残余头晕(RD)的疗效,及对血浆中内皮素-1(ET-1)、降钙素基因相关肽(CGRP)及神经肽Y(NPY)水平的影响并探讨其作用机制。方法90例患者随机分成对照组、中药组和联合组3组各30例。对照组给予... 目的观察菊钩逍遥散治疗耳石症手法复位后肝郁型残余头晕(RD)的疗效,及对血浆中内皮素-1(ET-1)、降钙素基因相关肽(CGRP)及神经肽Y(NPY)水平的影响并探讨其作用机制。方法90例患者随机分成对照组、中药组和联合组3组各30例。对照组给予甲磺酸倍他司汀片口服,中药组给予菊钩逍遥散口服,联合组给予菊钩逍遥散和甲磺酸倍他司汀片口服。治疗2周后,观察各组的临床疗效、DHI评分、SAS评分和血浆中ET-1、CGRP及NPY的变化。结果联合组总有效率为93.33%,高于中药组的82.76%和对照组的66.67%(P<0.05)。3组治疗前DHI、SAS评分、ET-1、CGRP和NPY含量比较,差别均不大(均P>0.05)。3组治疗后DHI、SAS评分均较治疗前降低(均P<0.01),且中药组、联合组的DHI、SAS评分均低于对照组(均P<0.01),而中药组和联合组DHI、SAS评分比较差别均不大(P>0.05)。3组治疗后ET-1、NPY含量均较治疗前降低(均P<0.01);中药组、联合组ET-1、NPY含量均低于对照组(均P<0.01),中药组和联合组比较,差异无统计学意义(P>0.05)。3组治疗后CGRP含量均较治疗前升高(均P<0.01),且中药组、联合组CGRP含量均高于对照组,联合组CGRP含量高于中药组(均P<0.01)。治疗过程中对照组出现2例便秘,中药组出现1例胃部不适,联合组出现1例便秘,各组均未见其他明显不良反应。结论菊钩逍遥散治疗RD疗效确切,能够缓解焦虑而改善残余头晕,其作用机制可能与调节血浆中ET-1、CGRP及NPY的水平有关。 展开更多
关键词 耳石症 菊钩逍遥散 手法复位 残余头晕
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不同干燥条件对白魔芋精粉性质的影响及其结构表征 被引量:1
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作者 刘海利 范盛玉 +3 位作者 张盛林 牛义 胡玲玉 张甫生 《食品与发酵工业》 CAS CSCD 北大核心 2024年第7期212-219,共8页
为了研究不同干燥条件对白魔芋精粉性质的影响,该研究以新鲜白魔芋为原料,探讨自然干燥、真空冷冻干燥、热风干燥(低温干燥、高温干燥、分段干燥)5种不同的干燥条件对白魔芋精粉色泽、魔芋葡甘聚糖(konjac glucomannan,KGM)含量、乙酰... 为了研究不同干燥条件对白魔芋精粉性质的影响,该研究以新鲜白魔芋为原料,探讨自然干燥、真空冷冻干燥、热风干燥(低温干燥、高温干燥、分段干燥)5种不同的干燥条件对白魔芋精粉色泽、魔芋葡甘聚糖(konjac glucomannan,KGM)含量、乙酰基含量、流变学性质等特性的影响,并通过分子质量、红外光谱(Fourier transform infrared spectrometer,FT-IR)、X-衍射(X-ray diffraction,XRD)、扫描电镜(scanning electron microscope,SEM)进行结构表征。结果表明,自然干燥效率低,所得样品品质较差,真空冷冻干燥虽然能得到较高品质的样品,但对设备要求比较高,干燥效率低。综合考虑,使用100℃→60℃的热风分段干燥为最佳方法,此时得到的魔芋精粉KGM含量为64.63%、乙酰基含量为23.49%、分子质量为1102 kDa、色泽较好、结晶度高、颗粒完整且表面光滑,所得水溶胶具有较好的流变学性质。综上,分段干燥方式可以用于白魔芋及其他魔芋的干燥中,所得的魔芋精粉品质良好,为白魔芋的开发应用及干燥工艺提供一定的理论参考。 展开更多
关键词 白魔芋 魔芋精粉 分段干燥 理化特性 结构表征
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再生微粉性能激活研究及应用进展 被引量:1
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作者 马昆林 孟维琦 +4 位作者 申景涛 胡明文 王晓杰 龙广成 曾晓辉 《材料导报》 EI CAS CSCD 北大核心 2024年第10期96-108,共13页
再生微粉是以混凝土、砖瓦等为主要成分的建筑垃圾制备再生骨料过程中产生的粒径小于75μm的颗粒,其主要化学组成与粉煤灰类似,具有一定的潜在活性。将再生微粉作为掺合料使用,可减少对原材料的需求,减轻对环境的污染,实现资源的循环利... 再生微粉是以混凝土、砖瓦等为主要成分的建筑垃圾制备再生骨料过程中产生的粒径小于75μm的颗粒,其主要化学组成与粉煤灰类似,具有一定的潜在活性。将再生微粉作为掺合料使用,可减少对原材料的需求,减轻对环境的污染,实现资源的循环利用。再生微粉具有组成复杂、需水量大、活性指数低等特点,直接作为掺合料使用不利于砂浆或混凝土的性能,但再生微粉中SiO_(2)、CaO和Al_(2)O_(3)含量均较高,具有较好的活性潜质,经过适当的技术处理后可以有效激发其活性,提高利用效率。目前再生微粉主要激活方式有物理激活、化学激活和热激活。热激活可以燃尽再生微粉中的有机物杂质,改变部分物质组成,从而激发其活性;物理激活通过机械力增大了再生微粉的比表面积,从而提高了再生微粉活性;化学激活主要通过加入碱性激发剂等提供碱性环境或提供可参与反应的离子,从而促进水化程度提高再生微粉活性。相关学者对再生微粉的活性激发方法及其在砂浆和混凝土中的应用进行了深入研究,这对再生微粉的应用具有积极作用。本文基于已有文献资料,对再生微粉的物理性能、化学组成、激活方式、激活机理及应用现状进行了综合评述,分析了目前再生微粉研究存在的问题并展望了其应用前景,以期为再生微粉的高品质利用提供研究基础。 展开更多
关键词 建筑垃圾 再生微粉 激活方式 作用机理 应用现状
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X射线荧光光谱(XRF)法测定喀斯特地区土壤样品中Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)含量 被引量:1
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作者 耿梅梅 许丽卫 +5 位作者 陈闻 张丽萍 袁红朝 贺珍 彭灿 王久荣 《中国无机分析化学》 北大核心 2024年第3期299-305,共7页
为揭示喀斯特地区不同自然环境下土壤的相似性和差异性,为后续喀斯特石漠化治理和植被恢复提供科学依据,利用微晶纤维素作为粘结剂,采用粉末样品压片制样,使用波长色散X射线荧光光谱法建立了同时测定喀斯特地区碳酸盐、硅酸盐土壤样品... 为揭示喀斯特地区不同自然环境下土壤的相似性和差异性,为后续喀斯特石漠化治理和植被恢复提供科学依据,利用微晶纤维素作为粘结剂,采用粉末样品压片制样,使用波长色散X射线荧光光谱法建立了同时测定喀斯特地区碳酸盐、硅酸盐土壤样品中关键成分Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)含量的方法。从粘结剂对压片效果的影响,粘结剂添加比例对元素含量检测结果的影响,Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)的测量参数分析线,分析晶体、基体效应和谱线重叠干扰等方面进行了方法参数确认。根据优化的参数,使用49个土壤标准物质绘制校准曲线建立了检测方法。结果表明,利用新建方法进行Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)检测,检出限多在61.0 mg/kg以下,相对标准偏差(RSD,n=6)为0~3.7%,同时,利用新建方法对采自喀斯特地区不同类型的土壤样品进行检测,Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)均可被检出。方法具有操作简便、快速、准确的优点,可同时检测喀斯特地区碳酸盐、硅酸盐土壤样品中Al_(2)O_(3)、CaO、Fe_(2)O_(3)、K_(2)O、MgO、SiO_(2)含量。 展开更多
关键词 波长色散X射线荧光光谱 粉末压片 喀斯特 土壤 碳酸盐 硅酸盐
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健脾益肠散对溃疡性结肠炎大鼠NLRP3信号通路IL-1β、IL-18表达的影响 被引量:2
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作者 蔺晓源 李开楊 +1 位作者 管洁 刘杰民 《中国中医药信息杂志》 CAS CSCD 2024年第1期117-121,共5页
目的探讨健脾益肠散对溃疡性结肠炎(UC)模型大鼠NLRP3信号通路白细胞介素(IL)-1β、IL-18表达的影响。方法从40只SD大鼠随机选取10只作为正常组,其余大鼠自由饮用5%硫酸葡聚糖溶液7 d制备UC大鼠模型,将成模大鼠随机分为模型组、柳氮磺... 目的探讨健脾益肠散对溃疡性结肠炎(UC)模型大鼠NLRP3信号通路白细胞介素(IL)-1β、IL-18表达的影响。方法从40只SD大鼠随机选取10只作为正常组,其余大鼠自由饮用5%硫酸葡聚糖溶液7 d制备UC大鼠模型,将成模大鼠随机分为模型组、柳氮磺吡啶组和健脾益肠散组,每组10只。健脾益肠散组和柳氮磺吡啶组予相应药液灌胃,正常组和模型组予等体积蒸馏水灌胃,连续14 d。观察大鼠一般状况,并进行疾病活动指数(DAI)评分,ELISA检测大鼠血清核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)、凋亡相关斑点样蛋白(ASC)、胱天蛋白酶1(Caspase-l)含量,免疫组化染色、Western blot和RT-PCR检测结肠组织IL-1β、IL-18蛋白及mRNA表达。结果与正常组比较,模型组大鼠一般状况较差,DAI评分显著升高(P<0.01),血清NLRP3、ASC、Caspase-l含量显著增加(P<0.01),结肠组织IL-1β、IL-18蛋白和mRNA表达均显著升高(P<0.01);与模型组比较,健脾益肠散组和柳氮磺嘧啶组大鼠一般状况明显好转,DAI评分显著降低(P<0.01),血清NLRP3、ASC、Caspase-l含量明显减少(P<0.05,P<0.01),结肠组织IL-1β、IL-18蛋白和mRNA表达均明显降低(P<0.05,P<0.01)。结论健脾益肠散可抑制NLRP3信号通路IL-1β、IL-18表达,改善结肠免疫炎症损伤,发挥治疗UC作用。 展开更多
关键词 健脾益肠散 溃疡性结肠炎 NLRP3信号通路 白细胞介素-1Β 白细胞介素-18 大鼠
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食用醋粉的制备工艺、营养成分及保健作用研究进展 被引量:1
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作者 李家磊 高扬 +3 位作者 严松 王粟 李波 管立军 《粮食与油脂》 北大核心 2024年第4期5-8,共4页
综述了食用醋粉的制备工艺、营养成分和保健作用,并对其未来发展进行了展望,以期为食用醋粉的综合利用提供参考。
关键词 食用醋粉 制备工艺 营养成分 保健作用
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正交实验结合AHP和GA-BP神经网络优化益黄散醇提工艺 被引量:1
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作者 王巍 杨武杰 +4 位作者 韩宇 安悦言 郝季 张强 鞠成国 《中国药房》 CAS 北大核心 2024年第3期327-332,共6页
目的 优化益黄散的醇提工艺。方法 采用回流提取法,以乙醇体积分数、液料比、提取时间为考察因素设计正交实验,以橙皮苷、川陈皮素、橘皮素、没食子酸、诃黎勒酸、诃子酸、甘草苷、甘草酸、丁香酚含量和干浸膏得率为指标,采用层次分析法... 目的 优化益黄散的醇提工艺。方法 采用回流提取法,以乙醇体积分数、液料比、提取时间为考察因素设计正交实验,以橙皮苷、川陈皮素、橘皮素、没食子酸、诃黎勒酸、诃子酸、甘草苷、甘草酸、丁香酚含量和干浸膏得率为指标,采用层次分析法(AHP)进行赋权并计算综合评分。通过验证正交实验和遗传算法(GA)-反向传播神经网络(BP神经网络)所预测的结果确定益黄散最佳醇提工艺参数。结果 正交实验优选的最佳醇提工艺参数为乙醇体积分数60%、液料比14∶1(mL/g)、提取时间90 min、提取2次,验证所得综合评分为79.19分;GA-BP神经网络优选的最佳醇提工艺参数为乙醇体积分数65%、液料比14∶1(mL/g)、提取时间60 min、提取2次,验证所得综合评分为85.30分,高于正交实验所得结果。结论 采用正交实验结合GA-BP神经网络的寻优方法较传统的正交实验寻优方法效果更佳,其优选出的益黄散最佳醇提工艺稳定可靠。 展开更多
关键词 益黄散 醇提工艺 正交实验 遗传算法 BP神经网络 层次分析法
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桑叶粉及桑叶提取物的功效和应用现状 被引量:1
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作者 许金伟 周晓红 +1 位作者 冯文婕 王梦涵 《保鲜与加工》 CAS 北大核心 2024年第2期91-96,共6页
桑叶为药食同源性食品,具有多种药理作用。近年来,随着人们对健康饮食需求的不断增加,桑叶粉及桑叶提取物作为一种新型的保健食品,在食品药品加工中的应用越来越广泛。通过文献综述和案例分析,介绍了桑叶粉及桑叶提取物的加工工艺、营... 桑叶为药食同源性食品,具有多种药理作用。近年来,随着人们对健康饮食需求的不断增加,桑叶粉及桑叶提取物作为一种新型的保健食品,在食品药品加工中的应用越来越广泛。通过文献综述和案例分析,介绍了桑叶粉及桑叶提取物的加工工艺、营养价值、功能特点和在食品药品加工中的应用现状及研究进展,展望了桑叶粉及桑叶提取物的未来发展方向,以期为进一步推动桑叶产业的发展,促进其在食品药品加工中的应用提供参考。 展开更多
关键词 桑叶粉 桑叶提取物 食品加工 营养价值 应用前景
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魔芋果蔬健康代餐粉的功能特性 被引量:1
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作者 范东翠 邱丽青 +1 位作者 陈晶晶 张慜 《食品与生物技术学报》 CAS CSCD 北大核心 2024年第3期85-93,共9页
研究了不同杀菌条件对自制代餐粉功能特性及产品品质的影响,紫外冷杀菌可以最大限度地保留代餐粉原来的功能特性,但是杀菌效率不高;而射频杀菌既可以保留功能性成分又可以取得良好的杀菌效果。将自制代餐粉与市售代餐粉进行对比,结果表... 研究了不同杀菌条件对自制代餐粉功能特性及产品品质的影响,紫外冷杀菌可以最大限度地保留代餐粉原来的功能特性,但是杀菌效率不高;而射频杀菌既可以保留功能性成分又可以取得良好的杀菌效果。将自制代餐粉与市售代餐粉进行对比,结果表明自制代餐粉总酚质量分数及抗氧化活性均高于市售代餐粉,且自制代餐粉的风味滋味均优于市售代餐粉。为研究自制代餐粉的贮藏稳定性,对自制代餐粉进行了3个月的贮藏实验。结果表明,自制代餐粉在90 d的贮藏期内功能特性、微生物指标均在标准范围内。为了延长代餐粉的保质期,应尽可能将代餐粉置于干燥、阴凉处贮藏。 展开更多
关键词 魔芋 代餐粉 功能特性 贮藏
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七味白术散治疗老年肺炎肺脾气虚证的疗效及对胃肠功能的影响 被引量:1
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作者 杨春霞 白洁 +1 位作者 臧东静 徐静 《河北中医》 2024年第2期211-214,219,共5页
目的 观察七味白术散对老年肺炎肺脾气虚证的疗效及对胃肠功能的影响。方法 将60例老年肺炎肺脾气虚证患者按照随机数字表法分为2组,对照组30例予常规基础治疗,治疗组30例在对照组治疗基础上予七味白术散加减治疗。2组均治疗2周。比较2... 目的 观察七味白术散对老年肺炎肺脾气虚证的疗效及对胃肠功能的影响。方法 将60例老年肺炎肺脾气虚证患者按照随机数字表法分为2组,对照组30例予常规基础治疗,治疗组30例在对照组治疗基础上予七味白术散加减治疗。2组均治疗2周。比较2组治疗前后中医证候评分、外周血炎症因子[白细胞介素6(IL-6)、白细胞计数(WBC)、C反应蛋白(CRP)、降钙素原(PCT)]水平、胃肠功能指标(腹内压、肠鸣音次数)及肠道菌群情况,并统计2组疗效及安全性。结果 治疗组总有效率93.33%(28/30),对照组总有效率73.33%(22/30),治疗组临床疗效优于对照组(P<0.05)。2组治疗后中医证候各项评分均较本组治疗前降低(P<0.05),且治疗组治疗后均低于对照组(P<0.05)。2组治疗后IL-6、WBC、CRP、PCT水平均较本组治疗前降低(P<0.05),且治疗组治疗后均低于对照组(P<0.05)。2组治疗后腹内压均较本组治疗前降低(P<0.05),肠鸣音次数均增加(P<0.05),且治疗组治疗后腹内压低于对照组(P<0.05),肠鸣音次数高于对照组(P<0.05)。2组治疗后肠道乳酸杆菌、双歧杆菌菌落数均较本组治疗前增加(P<0.05),肠球菌、肠杆菌菌落数均降低(P<0.05),且治疗组治疗后乳酸杆菌、双歧杆菌菌落数均高于对照组(P<0.05),肠球菌、肠杆菌菌落数均低于对照组(P<0.05)。2组治疗期间未出现肝肾功能异常。结论 七味白术散治疗老年肺炎肺脾气虚证疗效显著,可有效降低炎症因子水平,调节肠道菌群,改善胃肠功能,安全性高。 展开更多
关键词 七味白术散 肺炎 老年 肺脾气虚 炎症因子 胃肠功能
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Influence of the Partial Substitution of Bitumen by a Mixture of Sulphur and Tyre and Plastic Bottle Powders on the Behaviour of Bituminous Concrete
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作者 Parfait Isidore Mbenkoue Mbida Déodonne Kunwufine +1 位作者 Charles Bwemba Michel Mbessa 《Journal of Minerals and Materials Characterization and Engineering》 2023年第6期213-223,共11页
This article deals with the influence of the partial substitution of bitumen by a mixture of sulphur and tyre and plastic bottle powders on the characterization of asphalt concrete. The approach adopted was to subject... This article deals with the influence of the partial substitution of bitumen by a mixture of sulphur and tyre and plastic bottle powders on the characterization of asphalt concrete. The approach adopted was to subject a control asphalt concrete to level 2 formulation tests as well as those modified at 10%, 20%, 30% and 40% by substituting bitumen with a mixture of tyre powder, plastic bottle powder and sulphur at 40%, 28% and 32% respectively. The results of the PCG, Duriez and rutting tests carried out on the control and modified bituminous concretes (manufactured using the wet process) revealed three (03) major findings, in particular with regard to workability, resistance to simple compression and rutting. The experimental results show an increasing trend in the essential parameters. At 40% substitution, there was a 22.73% increase in compactness, reflecting a significant improvement in the material’s workability. With regard to simple compressive strength, the increase is 34.02% at 40% substitution, highlighting the limitation of crack formation and propagation under heavy precipitation. With regard to rutting, the 16% drop in susceptibility at 40% substitution reflects a significant improvement in the behaviour of the material under dynamic mechanical stresses in heavy precipitation. The improvement in these behaviours results from the insertion of the plastic bottle powder into the interstices of the granular skeleton, thus reducing its cellular structure, and also from the interactions between the sulphur with the tyre powder and the sulphur with the plastic bottle powder, i.e. cross-linking or vulcanisation. 展开更多
关键词 Bituminous Concrete Tyre powder Plastic Bottle powder SULPHUR
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Simultaneous Determination of 2- and 3-MCPD Esters in Infant Formula Milk Powder and Edible Vegetable Oils by Gas Chromatography-Mass Spectrometry
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作者 Huan Yao Siqi Zeng +2 位作者 Xianghua Wang Hang Li Bing Du 《American Journal of Analytical Chemistry》 2023年第10期421-433,共13页
Esters of 2- and 3-monochloropropane-1,2-diol (MCPD) are significative contaminants of processed edible oils used as foods or food ingredients. The aim of this study was to develop and validate a new method by GC-MS f... Esters of 2- and 3-monochloropropane-1,2-diol (MCPD) are significative contaminants of processed edible oils used as foods or food ingredients. The aim of this study was to develop and validate a new method by GC-MS for the simultaneous quantification of 2 and 3-MCPD esters in infant milk powder and edible vegetable oils. The developed protocol included fat fraction in infant milk powder and edible vegetable oils samples was extracted and treated with sodium methylate-methanol to cleave the ester bonds of the 2- and 3-MCPD esters, moreover, standard samples of deuterium isotope-labeled 2- and 3-MCPD palmitic acid double esters and stearic acid double esters were used as the internal standards. Furthermore, this method was validated when it was applied to food products, concrete manifestation in its good accuracy (the recovery of MCPD esters ranged from 86% to 114%), high sensitivity (the LOD of 3-MCPD and 2-MCPD esters were 0.025 and 0.020 mg/kg, LOQ were 0.075, 0.060 mg/kg, respectively) and satisfactory repeatability (RSD below 6.8%) for all analytes. In the 150 commercial edible vegetable oils and infant formula milk powder samples, we obtained a preliminary profile of MCPD ester contamination. 展开更多
关键词 3-MCPD 2-MCPD GC-MS Infant Milk powder Edible Vegetable Oils
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RPC外包方钢管混凝土柱轴压受力性能研究 被引量:1
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作者 张仁巍 庄一舟 +1 位作者 曾武华 李伟 《浙江工业大学学报》 北大核心 2024年第1期25-34,共10页
为了研究活性粉末混凝土(Reactive powder concrete,RPC)外包方钢管混凝土柱的轴压受力性能,以RPC厚度和长细比为参数,对6根构件开展轴压试验研究,探讨该类组合柱的破坏模式、受力机理、套箍效应和承载力。试验结果表明:外层RPC可为内... 为了研究活性粉末混凝土(Reactive powder concrete,RPC)外包方钢管混凝土柱的轴压受力性能,以RPC厚度和长细比为参数,对6根构件开展轴压试验研究,探讨该类组合柱的破坏模式、受力机理、套箍效应和承载力。试验结果表明:外层RPC可为内部方钢管混凝土柱提供较强的约束力,在受力后期套箍效应凸显。随着RPC厚度的增加,组合柱的承载力逐渐提高;随着组合柱长细比的增大,虽然其弹性刚度和承载力逐渐降低,但延性改善。采用ABAQUS软件建立RPC外包方钢管混凝土柱的有限元模型,分析RPC强度、RPC厚度、钢管强度等级、含钢率、内部混凝土强度和长细比等参数对组合柱承载力的影响规律,可得方钢管混凝土柱发挥系数的变化幅值为0.78~1.01。在试验研究、有限元参数分析和理论探讨的基础上,借鉴钢管混凝土结构技术规范,提出了RPC外包方钢管混凝土轴压短柱和长柱的承载力简化计算方法,公式计算值与已有数据样本吻合良好。 展开更多
关键词 活性粉末混凝土 方钢管混凝土柱 轴压试验 有限元分析 承载力
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Effects of Different Levels of Garlic Powder Incorporated in the Feed Enriched with Stylosanthes guianensis on Reproduction and Pre-Weaning Growth Performances of Cavies (Cavia porcellus)
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作者 Martin Vidal Tatang Emile Miégoué +6 位作者 Margaret Mary Momo Chongsi Wouafo David Fokom Nyah Cédric Kwayep Paulette Ntsafack Tobou France-Gina Djoumessi Mathieu Duclos Fogang Fernand Tendonkeng 《Open Journal of Animal Sciences》 2023年第4期574-589,共16页
In order to increase the productivity of the local cavies as a meat animal, a study was carried out between November 2021 and March 2022 at the Research and Experimental Farm, Animal Nutrition and Production Research ... In order to increase the productivity of the local cavies as a meat animal, a study was carried out between November 2021 and March 2022 at the Research and Experimental Farm, Animal Nutrition and Production Research Unit of the Faculty of Agronomy and Agricultural Sciences (FAAS) and the Microbiology and Anti-Microbial Research Unite of the University of Dschang on 72 cavies aged between 4 and 5 months and weighing an average of 450 ± 50 g produced on the farm, including 60 females and 12 males. The females were distributed according to a completely randomized factorial design in twelve (12) rearing boxes numbered G1 to G12, with 15 females per group distributed in 03 boxes and receiving iso-nitrogenated experimental diet (18% protein) R0 enriched with 20% of Stylosanthes guianensis (0% garlic powder), R0.25 (0.25% garlic powder), R0.50 (0.50% garlic powder) and R0.75 (0.75% garlic powder). Females were identified by numbered ear tags and mated with a sex ratio of 5 females for 1 male. Drinking water enriched with vitamin C (01 tablet of 240 mg in 1.5 liters of water) was served ad libitum and renewed daily. The males were removed after 31 days. A form was established to record the weight of each pregnant female, any abortions during gestation, the date of parturition and the date of birth of each newborn, as well as the number of live-born or stillborn pups. After parturition, the weights of female and newborn cavies were recorded weekly until the 3<sup>rd</sup> week. The number of cavies that died before weaning and the number of live weaned cavies were also recorded. Reproductive performance significantly increased (p 0.05) fertility rate and net fertility rate, litter size, birth viability rate, and pre-weaning viability rate with rations containing garlic powder, compared to the control ration, especially with the R0.50 ration. In addition, birth mortality and pre-weaning mortality were significantly lower (p 0.05) with rations containing the additive, compared to those of the control ration (R0). However, the R0.50 ration showed the lowest rates, followed by the R0.25 ration, and finally the R0.75 ration. Weight development of young cavies increased with all rations but was more marked with the R0.50 ration. Only total weight gain (TG) and average daily weight gain (ADG) in the pre-weaning phase were significantly increased (p < 0.05) with rations R0.25 and R0.50. 展开更多
关键词 Cavy Garlic powder Pre-Weaning Growth REPRODUCTION Stylosanthes guianensis
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热处理对激光粉末床熔融AlSi10Mg合金热物理性能的影响
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作者 秦艳利 贾煜琦 +3 位作者 张昊 倪丁瑞 肖伯律 马宗义 《航空材料学报》 CAS CSCD 北大核心 2024年第2期184-191,共8页
采用激光粉末床熔融(laser powder bed fusion,LPBF)法成功制备AlSi10Mg合金样品,研究130℃/4 h时效处理、236℃/10 h退火处理和540℃/1 h固溶处理三种热处理工艺对AlSi10Mg合金样品的微观组织的影响,以及热处理后AlSi10Mg合金在室温~40... 采用激光粉末床熔融(laser powder bed fusion,LPBF)法成功制备AlSi10Mg合金样品,研究130℃/4 h时效处理、236℃/10 h退火处理和540℃/1 h固溶处理三种热处理工艺对AlSi10Mg合金样品的微观组织的影响,以及热处理后AlSi10Mg合金在室温~400℃的温度范围内热膨胀系数和热导率演变规律。结果表明:时效处理后铝基体中析出球状的Si颗粒,仍然保留完整的网状共晶硅组织;退火后,网状共晶硅完全消失,球化Si颗粒均匀分布在基体中;固溶处理后出现大的块状Si颗粒,尺寸在1~3μm;经过热处理之后AlSi10Mg合金的热物理性能均优于打印态。退火处理后的合金样品在室温到400℃的热膨胀系数为1.64×10^(−5)~2.1×10^(−5)℃^(−1),平均热导率为179.6 W·m^(−1)·K^(−1),性能优于时效处理和固溶处理。 展开更多
关键词 AlSi10Mg 激光粉末床熔融 热处理 微观结构 热物理性能
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