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題 名 | Inhibitory Effects of Bovine Colostrum Protein Hydrolysates on Human Leukemic U937 Cell Growth=牛初乳蛋白水解物經由直接模式對U937細胞生長之抑制作用 |
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作 者 | 陳志瑋; 江淑華; 王秀育; 林宥彤; 林芳儀; 張基郁; | 書刊名 | Journal of Food and Drug Analysis |
卷 期 | 19:3 2011.09[民100.09] |
頁 次 | 頁309-317+378 |
分類號 | 412.37 |
關鍵詞 | 初乳; 豬小腸酵素; 脫脂乳; 蛋白質水解物; U937細胞; Colostrums; Porcine small-intestinal enzymes; Skimmed milk; Protein hydrolysates; U937 cell; |
語 文 | 英文(English) |
英文摘要 | ABSTRACT Enzymatic hydrolysates were obtained by hydrolysis of retorted skin gelatin hydrolysates (RSGH) from bullfrog (Rana catesbeiana) using three enzymes including collagenase, bromelain, and pancreatin for various times (0, 15, 30 and 60 min). As the hydrolysis time increased, degrees of hydrolysis (DH) of all three enzymatic hydrolysates increased. The molecular weight distribution of collagenase-hydrolyzed RSGH (RSGH-Cg) fraction was in the range of 189 - 686 Da (40.1 - 50.1%) and 686 - 6,511 Da (36.7 - 48.7%) while those of the other enzymatic-hydrolyzed RSGH fractions were mostly in the 686 - 6,511 Da (58.2 - 60.8%) range. All enzymatic hydrolysates had more potent antioxidant activity including 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, ferrous ion chelating activity, and reducing power than the original RSGH. RSGH-Cg showed the highest activity. The lower IC50 value of angiotensin I-converting enzyme (ACE) inhibitory activity of RSGH-Cg correlated with the degree of hydrolysis. This study suggested that collagenase treated bullfrog RSGH is a promising functional ingredient. |
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