共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
用麦麸和剩余污泥调配后,作为营养基质饲养驯化黄粉虫,对黄粉虫富集剩余污泥中Cr3+的最佳条件进行试验研究。结果表明:黄粉虫的富集作用显著受到温度、饲养密度和碳氮质量比交互作用的影响(p<0.05),在温度为30℃、饲养密度为0.4g/cm2、碳氮质量比为2.5的条件下富集效率最高,此时,饲养后黄粉虫体内Cr3+的质量浓度为0.87mg/kg,是原有Cr3+含量的7.25倍;饲养后剩余污泥中Cr3+的质量浓度为0.17mg/kg,约为新鲜污泥中Cr3+含量的1/5。 相似文献
3.
Anne Mette Lykke Sandra Beyer Gregersen Elie Antoine Padonou Imael Henri Nestor Bassolé Trine Kastrup Dalsgaard 《Lipids》2021,56(4):357-390
Seed oils sourced from West Africa are generally not well-characterized, but likely to have an untapped potential. This review aims to make an overview of fatty acid (FA) composition of unconventional seed oils from semi-arid West African trees and evaluate potential for new and enhanced uses and for improving local livelihoods and biodiversity conservation. A total of 111 studies on FA composition were found, covering 31 species. Only 69 of the studies (62%) were included in the review, as 38% had unreliable or incomplete results. There was a clear link between taxonomic kinship and FA composition. Over 20 potentially interesting and underexploited oils were found, including oils with properties similar to palm oil, olive oil, coconut oil, shea butter, and cotton seed oil. About half of the oils have promising potential for cosmetics. One third of the oils were relatively saturated, indicating properties for structuring food and heat resistance. Most of the species had multiple uses and oil production could be profitable in co-production with other non-timber forest products. Furthermore, establishment of sustainable oil production and domestication of oil trees could promote biodiversity conservation. Enhanced oil production in semi-arid West Africa is promising, but several practical constraints remain to be overcome. 相似文献
4.
5.
F. D. Gunstone 《Journal of the American Oil Chemists' Society》1993,70(4):361-366
Based on the interpretation of the high-resolution13C nuclear magnetic resonance spectra of 15 spreading fats, baking fats, vegetable creams and an infant formula, it is possible to decide whether the sample contains butterfat, lauric oils, partially hydrogenated fat, linoleic acid or linolenic acid. The data have been interpreted in a semiquantitative manner, and this provides an insight into the nature of the material present in each sample. 相似文献
6.
7.
本文论述了应用于化妆品中的15种生化药物,比较全面地提供了每种生化药物的成分、功能、制取、应用等有实用价值的信息,为企业研究开发各种生化药物化妆品提供了有益的参考。 相似文献
8.
原花青素在化妆品领域的研究与开发现状 总被引:24,自引:0,他引:24
本文着重介绍国外原花青素在皮肤抗皱、防晒美白、保湿等化妆品领域的研究现状 ,为其在化妆品领域的深入研究和开发提供理论参考。 相似文献
9.
10.
Hidetoshi Sakurai Jan Pokorný 《European Journal of Lipid Science and Technology》2003,105(12):769-778
Conventional edible oils, such as sunflower, safflower, soya bean, rapeseed (canola) oils, were modified to obtain high‐oleic, low‐linoleic or even low‐linolenic oils. The aim was to develop salad, cooking and frying oils, that are very stable against lipid peroxidation. They are also suitable for margarine blends, as additives to cheeses and sausages, or even as feed components. Oils containing higher amounts of medium‐chain length or long‐chain polyunsaturated fish oil fatty acids are suitable as special dietetic oils or as nutraceuticals. High‐stearic oils are designed as trans‐fatty acid‐free substitutes for hydrogenated oils. New tailor‐made (designer) oils are thus a new series of vegetable oils suitable for edible purposes, where conventional oils are not suitable. 相似文献
11.
12.
辅酶Q10的性质及其在化妆品中的应用 总被引:3,自引:0,他引:3
本文介绍了辅酶Q10的性质及其在化妆品中的应用,作为皮肤中天然的抗氧剂和代谢激活剂,辅酶Q10可用于抗皱、清除自由基等化妆品中,是一个非常有应用前景的护肤活性原料 相似文献
13.
14.
为了建立化妆品塑料包装材料中邻苯二甲酸酯(PAEs)的测定方法,通过设计正交试验,优化超声振荡萃取的条件,并通过气相色谱-质谱联用仪进行测定。结果表明:16种PAEs在线性范围内的相关系数均大于0.996,方法检出限0.157~0.928 mg/L,加标回收率在87.4%~108.3%范围内,RSD(n=6)均小于7.0%。聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)、丙烯腈-丁二烯-苯乙烯(ABS)、聚苯乙烯(PS)中PAEs的检出率达到82.6%。该方法操作简单,高效准确,可以检测不同化妆品塑料包装的PAEs。 相似文献
15.
16.
建立同时测定化妆品中的喹诺酮类抗生素(依诺沙星、氟罗沙星、氧氟沙星、诺氟沙星、培氟沙星、环丙沙星、恩诺沙星、沙拉沙星、双氟沙星、莫西沙星)的液相色谱-串联质谱法。方法样品以2%甲酸-乙腈(体积比15∶10)溶液超声提取,离心分离,以0.2%甲酸水-乙腈溶液为流动相,LCMS/MS测定喹诺酮类抗生素的含量。结果该方法的线性范围为1~50μg/g,相关系数>0.998,加标1~40μg/g时,回收率为84.3%~99.2%,RSD为0.5%~8.5%,检出限为0.1~0.2μg/kg。结论该方法灵敏、快速、准确,适用于化妆品中喹诺酮类抗生素的检测。 相似文献
17.
建立了同时测定水剂和膏霜化妆品中乙内酰脲和DMDM乙内酰脲的高效液相色谱分析方法。样品用甲醇-乙腈超声提取后用经氨基柱(4.6 mm×250 mm,5.0μm)分离,采用水-乙腈作为流动相,二极管阵列检测器进行检测,检测波长为210 nm,外标法定量。在优化的实验条件下,乙内酰脲和DMDM乙内酰脲在5~120 mg/L范围内线性关系良好,相关系数大于0.999。在两种基质空白样品中添加0.025%、0.050%、0.250%3个浓度水平时,加标回收率在96.4%~103.1%之间,相对标准偏差在0.1%~2.0%之间,方法检出限(S/N=3)分别为0.005%和0.010%。方法简单快速、准确可靠,适用于化妆品中乙内酰脲和DMDM乙内酰脲的测定。 相似文献
18.
建立了气相色谱-质谱联用法(GC-MS)同时检测化妆品中α-生育酚和α-生育酚醋酸酯的分析方法。样品采用乙腈水溶液-正己烷分散提取,以HP-5MS色谱柱分离,GC-MS选择离子监测模式测定。实验表明,α-生育酚和α-生育酚醋酸酯在0.05~10 mg/L范围内呈良好的线性关系,相关系数均大于0.999;此方法检出限(S/N=3)分别为0.6和0.5 mg/kg,定量限(S/N=10)分别为1.9和1.8 mg/kg;阴性样品的2个添加水平的平均回收率在88.7%~106.3%之间,相对标准偏差(RSD,n=6)小于8.2%。 相似文献
19.
神经酰胺脂质体——含角质层脂质膜的脂质体 总被引:4,自引:0,他引:4
角质层的渗透屏障大多是由饱和脂质如神经酰胺、胆固醇和游离脂肪酸组成。它是物质交换的有效阻隔并防止皮肤干燥。神经酰胺脂质体(Cerasomes)是一种脂质体,它的膜是由最重要的角质层脂质组成的。神经酰胺脂质体作为类皮肤膜的来源,它能加快受损屏障层的再生、降低皮肤刺激,并且它还提供了将角质层脂质应用于化妆品中简单而有效的途径。 相似文献
20.
为了深入研究黄粉虫纤溶酶的纤溶机理,用生物信息学方法对黄粉虫纤溶酶进行了三维结构模拟与序列分析。首先找到了其活性中心,利用Biosun软件的同源模建技术,模拟了黄粉虫纤溶酶的三维结构;利用Goldkey软件,对黄粉虫纤溶酶的氨基酸序列进行了分析,重点讨论了其等电点、亲水性、柔性与催化活性之间的关系,最后对纤维蛋白水解部位结构进行了分析。结果表明,黄粉虫纤溶酶的活性中心是组氨酸、丝氨酸和天冬氨酸三个氨基酸残基,位于球蛋白中心凹穴处,底物结合部位是丝氨酸、天冬氨酸和甘氨酸。从微观分子水平上阐述了该类酶水解纤维蛋白的机理是催化精氨酸-赖氨酸肽键水解,与报道的纤维蛋白的溶解机理相符。 相似文献