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生物活性肽的研究进展 被引量:2
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作者 朱晓东 沈仓良 《中国饲料添加剂》 2006年第11期9-12,共4页
生物活性肽(BioactivePeptides)是蛋白质中20种天然氨基酸以不同组成和排列方式构成的从二肽到复杂的线形、环形结构的不同肽类的总称,是源于蛋白质的多功能最复杂的化合物,具有特殊生理功能的肽。本文论述了某些生物活性肽的特性... 生物活性肽(BioactivePeptides)是蛋白质中20种天然氨基酸以不同组成和排列方式构成的从二肽到复杂的线形、环形结构的不同肽类的总称,是源于蛋白质的多功能最复杂的化合物,具有特殊生理功能的肽。本文论述了某些生物活性肽的特性,包括它们的来源、种类、功能、代谢、制备方法等,为后续研究打下了一定基础。 展开更多
关键词 生生物活性肽 吸收机制 制备方法
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The selection of alkaline protease-producing yeasts from marine environments and evaluation of their bioactive peptide production
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作者 李静 池振明 +2 位作者 王祥红 彭莹 池哲 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2009年第4期753-761,共9页
A total of 400 yeast strains from seawater, sediments, saltern mud, marine fish guts, and marine algae were obtained. The protease activity of the yeast cultures was estimated, after which four strains (HN3.11, Nllb,... A total of 400 yeast strains from seawater, sediments, saltern mud, marine fish guts, and marine algae were obtained. The protease activity of the yeast cultures was estimated, after which four strains (HN3.11, Nllb, YF04C and HN4.9) capable of secreting extracellular alkaline protease were isolated. The isolated strains were identified as Aureobasidium pullulans, Yarrowia lipolytica, lssatchenkia orientalis and Cryptococcus cf. aureus. The optimal pH of the protease activity produced by strains HN3.11, YF04C, and HN4.9 was 9.0, while that of the protease produced by strain N1 lb was 10.0. The optimal temperature for protease activity was 45℃for strains HN3.11, N11b, and YF04C, and 50℃ for strain HN4.9. After digestion of shrimp (Penaeus vannamei) protein and spirulina (Arthospira platens&) protein with the four crude alkaline proteases, the filtrate from spirulina (Arthrospira platensis) powder digested by the crude alkaline protease of strain HNYl 1 was found to have the highest antioxidant activity (61.4%) and the highest angiotensin I converting enzyme (ACE)-inhibitory activities (68.4%). The other filtrates had much lower antioxidant activity and ACE-inhibitory activities. 展开更多
关键词 marine yeasts alkaline protease yeast diversity phylogenetic analysis bioactive peptide
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