Utilization of seafood processing by-products for production of proteases by Paenibacillus sp. TKU052 and their application in biopeptides' preparation

doi:10.3390/md18110574

淡江大學機構典藏 > 理學院 > 化學學系暨研究所 > 期刊論文 > Item 987654321/119634

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題名:	Utilization of seafood processing by-products for production of proteases by Paenibacillus sp. TKU052 and their application in biopeptides' preparation
作者:	Chien Thang Doan;Thi Ngoc Tran;Van Bon Nguyen;Anh Dzung Nguyen;San-Lang Wang
關鍵詞:	angiotensin-I converting enzyme inhibitory activity;free radical scavenging activity;Paenibacillus;peptide;prebiotic;protease
日期:	2020-11-20
上傳時間:	2020-11-25 12:10:22 (UTC+8)
出版者:	MDPI
摘要:	Microbial fermentation of by-products is a renewable and efficient technique in the development of a range of useful products. In this study, protease synthesis by Paenibacillus sp. TKU052 was carried out on culture media containing some common seafood processing by-products (SPBPs) as the sole source of carbon and nitrogen (C/N). The most suitable C/N nutrition source for the production of proteases was found to be 3.0% (w/v) demineralized crab shells powder (deCSP) and maximal enzyme activity of 4.41 ± 0.16 U/mL was detected on the third day of the culture. Two proteases (P1 and P2) with a similar molecular weight of 31 kDa were successfully isolated and purified from the 3-day deCSP-containing medium. Both P1 and P2 exhibited the highest activity of gelatin hydrolysis at pH 6 and 60 °C. The gelatin hydrolysates catalyzed by Paenibacillus TKU052 proteases were evaluated for biological activities, including 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, angiotensin-I converting enzyme (ACE) inhibition, and prebiotic activities. The gelatin hydrolysates expressed 31.76–43.95% DPPH radical scavenging activity and 31.58–36.84% ACE inhibitory activity, which was higher than those from gelatin. Gelatin hydrolysates also showed the growth-enhancing effect on Bifidobacterium bifidum BCRC 14615 with an increase to 135.70–147.81%. In short, Paenibacillus sp. TKU052 could be a potential strain to utilize crab shell wastes to produce proteases for bio-active peptides’ preparation.
關聯:	Marine Drugs 18(11), 574
DOI:	10.3390/md18110574
顯示於類別:	[化學學系暨研究所] 期刊論文

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