共查询到20条相似文献,搜索用时 203 毫秒
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黄可承 宫萱 唐嘉诚 陈彦婕 包建强 但碱液浓度提取时间控制不恰当会导致样品水解过度 过度水解的胶原会产生有毒产物 影响成品品质。利用酸法碱法酶法三种不同方法提取鱼胶原蛋白的产量进行了比较 碱提取的产量最低 但相比于其它几种方法 碱胶原蛋白的吸水吸油性更好 持水性也好于热水提取法。总体而言 碱法不适合作为单一的方法提取胶原蛋白 更多的是作为原料预处理选用的方式与酶法共同提取胶原。 《精细化工》2022,39(9)
胶原蛋白(Collagen)作为动物体内重要的大分子蛋白质,是参与动物组织和器官机械保护的重要细胞外蛋白。水产品副产物作为近年胶原蛋白行业关注的重点,传统蛋白提取方式在提取率、环保等方面缺点逐渐显现。本文综述了胶原分子构成机理、类型、胶原蛋白来源以及前处理方法对胶原蛋白提取工艺的影响;比较了原料、传统提取工艺(酸、碱、酶)对胶原蛋白产量与功能的影响;对水产品胶原蛋白在食品品质、食品保鲜、医药领域的应用现状以及新型胶原蛋白提取方法(亚临界水、超临界流体萃取)的工业可行性进行分析。对蛋白提取效率低、原料结构影响大的副产物提出“物理/生物-酸-复合酶”的水产胶原蛋白工艺优化方案,旨在为水产品资源高值化利用提供理论支撑。 相似文献
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化妆品工业的发展主要经历了四个时期:第一时期为纯物理、普通性油质类化妆品;第二时期为油水混合技术化妆品;第三时期为纯天然的,是从植物中提取的精华成分制成的化妆品;第四时期为仿生物化妆品,即利用生物技术(细胞工程,基因工程)从动物机体中提取、制造(生产)与人体自然结构相仿,并具有亲和力的生物制品(化妆品原料)。目前,添加到化妆品中的很大部分原料都是通过化学合成和从植物中提取的。 相似文献
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水解胶原蛋白是明胶的降解产物(明胶是由猪、牛等动物的皮或骨为原料提取的),它保留了明胶的大部分优良的理化性能。同时它的分子量降低了,使其溶解性提高,易于被人体吸收,营养功能得到进一步的发挥。 相似文献
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通过植物组织培养技术得到细梗蔷薇(Rosa graciliflora)愈伤组织,利用纯水超声提取和真空冷冻干燥工艺获得细梗蔷薇愈伤组织提取物(RCE),然后对RCE进行成分检测和体外护肤功效评估。结果表明,RCE含有氨基酸、维生素、有机酸和多酚等多种活性成分。体外护肤检测结果表明,RCE对人真皮成纤维细胞有一定的增殖作用,0.01%和0.05%RCE能促进人真皮成纤维细胞分泌Ⅰ型胶原蛋白,与空白对照对比,其Ⅰ型胶原蛋白分别提高83%和79%,作用效果和阳性对照维生素C相似。此外,在重建的3D表皮模型上,0.01%RCE能够显著促进细胞增殖活性标记物Ki67、皮肤屏障功能标志物丝聚蛋白(Filaggrin)及外膜蛋白(Involucrin)的表达,相比空白对照,其阳性率分别提高308%,853%和349%,具有显著差异性。研究发现RCE具有潜在的延缓皮肤衰老和提高皮肤屏障功能的作用,有望作为一种绿色原料添加在化妆品中使用。 相似文献
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功能性化妆品原料——蜂胶 总被引:1,自引:0,他引:1
功能性化妆品原料──蜂胶王丽群漳州市家用化学品厂(漳州363000)蜂胶是蜜蜂辛勤劳动贡献给人类的一种有价值的物质,它可以作为功能性原料应用于化妆品中。蜂胶是由工峰从植物芽苞或树干上采集并加工酿造而成。从化学角度来看,蜂胶是一种混合物,它有不确定的成... 相似文献
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抑制透明质酸分解的化妆品成分 总被引:1,自引:0,他引:1
抑制透明质酸分解的化妆品成分22(总278)日本资生堂公司和Suntory公司已联合开发成功的一种防止透明质酸分解、保持皮肤理想湿润状态的化妆品成分。这种新原料是一种中国植物浓香悬钩子(RubusSuavismus)萃取物中所含的香精,与传统的仅仅保... 相似文献
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化妆品配方师可从许多来源中选择各种油脂,但最终要由质量、价格和性能来评价。脂质体为化妆品配方提供了显著的性能,它使皮肤润滑、柔和、富有弹性,具有封闭性,在皮肤上能产生一层薄膜以防止皮肤中水份散失。另外,它的清洗、乳化、光泽、附着性和润滑性都拓宽了脂质体及其衍生物的应用范围。介绍了一种由遗传工程开发并已商业化生产的富含月桂酸酯的月桂酸Canola油,它在温和及泡沫方面有肯定的优势。油脂的纯度对化妆品配方非常重要,化妆品乳液的稳定性取决于脂质体的纯度。还介绍了化妆品组分评述规划的作用。 相似文献
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Helena Ribeiro Joana Marto Sara Raposo Maria Agapito Vera Isaac Bruna G. Chiari Pedro F. Lisboa Alexandre Paiva Susana Barreiros Pedro Simões 《European Journal of Lipid Science and Technology》2013,115(3):330-336
Spent coffee grounds (SCG), which are the residue obtained from the treatment of coffee with hot water or steam, can be used for industrial applications, due to the high content in lipids. The cosmetic products might be a suitable application for these types of residues because the barrier properties of the stratum corneum (SC) are largely dependent on the intactness of the lipid lamellae that surrounds the corneocytes. The purpose of this work was to assess the feasibility of using the lipid fraction of SCG extracted with supercritical carbon dioxide in the development of new cosmetic formulations with improved skin lipids (sebum) and hydration. The use of spent coffee lipid extract in cosmetic industry seems to be a suitable approach to recycle the wastes from coffee industry. Emulsion containing 10% of the lipid fraction of SCG (SpentCofOil cream) presented promising characteristics in the improvement of sebum skin levels with a good acceptance by consumers when compared to an emulsion containing 10% w/w of green coffee oil (GreenCofOil cream) and a placebo without coffee oil (NoCofOil cream). Practical applications: In this work, the authors develop and characterize a cream containing 10% of the lipid fraction of SCG extracted with supercritical carbon dioxide with improved skin lipids (sebum) and hydration. 相似文献
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通过离体实验和人体实验分别验证了新近开发的皮肤美白原料纯天然酵母提取物Natriance B rightener(NB)的美白功效。离体组织切片实验结果表明,与安慰剂相比,质量分数为0.5%和1.0%的NB水溶液对黑色素的抑制率分别为55.8%(p<0.05)和81.2%(p<0.01),而质量分数为1.0%的曲酸水溶液(阳性对照)对黑色素的抑制率为25.9%(p<0.05)。在双盲人体实验中,相比使用安慰剂一侧的皮肤,使用质量分数为3%NB美白霜的皮肤亮度(L*值)和皮肤个体类型角(ITA°)在整个测试期间呈增长趋势,截至测试42 d时,仍然保持30%以上的增长(p<0.05);皮肤的黑色素指数(M I)值在整个测试期间呈下降趋势,截至42 d时,仍然保持38%的下降(p<0.05)。可见NB有显著高于对照组的美白功效(p<0.05)。 相似文献
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皮肤致敏是化妆品原料安全性评估中的一项重要内容。按照ECVAM(European Centre for the Validation of Alternative Methods)的标准,通过对16个标准品进行检测,成功建立了DPRA(Direct Peptide Reaction Assay,直接肽链反应分析)实验方法。其检测结果的敏感性,特异性,准确性,S/NS的判定以及4 Class分别为81.82%,100%,77.8%,100%和94.7%。目前该方法已成功运用在实际工作中,并检测出多款具有引起皮肤致敏潜在能力的化妆品原料。 相似文献
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Dominique Guillaume Zoubida Charrouf 《European Journal of Lipid Science and Technology》2011,113(4):403-408
Argan oil is of food or cosmetic (INCI name: Argania spinosa kernel oil) grade. During the past 15 years cosmetic argan oil, as beauty oil or cosmetic ingredient, has become one of the major actors in the dermocosmetic field. Beauty argan oil is produced by cold‐pressing argan‐fruit kernels. As a cosmetic ingredient, argan oil is produced by solvent‐assisted extraction of the finely crushed kernels. Enriched‐argan oil which is produced by distillation of cosmetic argan oil can be supplemented with antioxidants. Hence, it presents an even better cosmetic potential. Argan fruit pulp and argan leaves also contain proteins, peptides, saponins and other chemicals presenting highly interesting dermocosmetics. Therefore, the argan tree (A. spinosa) is sometimes nicknamed A. cosmetosa. We comprehensively review the current knowledge (literature and patent) related to argan oil and argan tree products in the dermocosmetic domain. 相似文献
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Ivett Ackermann Reiner Ulrich Kerstin Tauscher Olanrewaju I. Fatola Markus Keller James C. Shawulu Mark Arnold Stefanie Czub Martin H. Groschup Anne Balkema-Buschmann 《International journal of molecular sciences》2021,22(21)
After oral exposure of cattle with classical bovine spongiform encephalopathy (C-BSE), the infectious agent ascends from the gut to the central nervous system (CNS) primarily via the autonomic nervous system. However, the timeline of this progression has thus far remained widely undetermined. Previous studies were focused on later time points after oral exposure of animals that were already 4 to 6 months old when challenged. In contrast, in this present study, we have orally inoculated 4 to 6 weeks old unweaned calves with high doses of BSE to identify any possible BSE infectivity and/or PrPBSE in peripheral nervous tissues during the first eight months post-inoculation (mpi). For the detection of BSE infectivity, we used a bovine PrP transgenic mouse bioassay, while PrPBSE depositions were analyzed by immunohistochemistry (IHC) and by protein misfolding cyclic amplification (PMCA). We were able to show that as early as 8 mpi the thoracic spinal cord as well as the parasympathetic nodal ganglion of these animals contained PrPBSE and BSE infectivity. This shows that the centripetal prion spread starts early after challenge at least in this age group, which represents an essential piece of information for the risk assessments for food, feed, and pharmaceutical products produced from young calves. 相似文献
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Adijat Omowumi Inyang Simeon Ademola Ibitoye 《International Journal of Applied Ceramic Technology》2018,15(6):1439-1445
Musculoskeletal replacement parts are increasingly evolving globally. However, the high cost associated with these parts calls for innovative yet affordable candidate materials. Therefore, this study involves the local production of hydroxyapatite from bovine bone wastes using an unconventional drying technique and its characterization as an alternative material for bone substitutes. The bovine bones used are safe from prions or infectious diseases such as bovine spongiform encephalopathy (BSE) and were further processed using calcination means that excludes possible existing disease. The results obtained from various analyses of the calcined powder confirmed the formation of HAp phase in substantial amount. The preparation was found to be economically viable and production route was time‐ and cost‐ effective. 相似文献