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題 名 | Protein Hydrolysate Batch Production with Angiotensin I-Converting Enzyme Inhibitory Activity from Egg Whites=批式製備具ACE活性抑制之卵蛋白胜肽 |
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作 者 | 江文德; 李明展; 郭偉翔; 蔡正宗; | 書刊名 | 藥物食品分析 |
卷 期 | 14:4 民95.12 |
頁 次 | 頁385-390+406 |
分類號 | 341.91 |
關鍵詞 | 血管收縮I-轉化脢; 抗高血壓活性; 蛋白質水解物; 蛋白; Angiotensin I-converting enzyme; ACE; Antihypertensive activity; Protein hydrolysate; Egg whites; |
語 文 | 英文(English) |
中文摘要 | 運用thermolysin以製備卵蛋白胜肽,經定性並分區以探討各區對ACE活性之抑制,並應用自發性高血壓大鼠(SHR)測試卵蛋白胜肽的抗高血壓功效。在thermolysin最適條件(pH 8及60°C),及[E]/[S]=0.02%下,1%粗卵蛋白溶液經水解4小時,離心後澄清液中之產物回收率約80%,此水解物有高度ACE抑制活性(IC50=33 μg/mL),不具苦味亦無蛋清之腥味,依序經分子量10,000,3,000和1,000 Da膜之超過濾,可提高其濾液對ACE之抑制活性達IC50=17 μg/mL。Thermolysin可回收重複使用四次而不降低水解物之ACE活性抑制,SHR實驗顯示口服0.2 g/Kg體重能有效降低高血壓。 |
英文摘要 | Peptides derived from egg whites by thermolysin digestion were fractionated and characterized to investigate their inhibitory activity against angiotensin I-converting enzyme (ACE). The antihypertensive effect of egg white hydrolysates in strain SHR spontaneously hypertensive rats was also investigated. At optimal conditions, pH 8, 60°C, and (E)/(S) = 0.02%, digestion of 1% crude egg white solution by thermolysin was carried for 4 hours. The recovery yield from the supernatant after centrifugation was around 80%. The hydrolysate showed high ACE inhibitory activity (IC50 = 33 μg/mL) and imparted neither bitter taste nor the iron odor of egg whites. Sequential ultra-filtration of hydrolysate with MW cut-off 10,000, 3,000 and 1,000 Da resulted in increased activity from each filtrate up to IC50 = 17 μg /mL. Thermolysin was recycled from the hydrolysate for subsequent batch use for a total of four batches without reduction in anti-hypertensive activity. The hydrolysate demonstrated an anti-hypertensive activity in spontaneously hypertensive rats at an orally administrated dosage of 0.2 g/kg body weight. |
本系統中英文摘要資訊取自各篇刊載內容。