Comparison between thermal hydrolysis and enzymatic proteolysis processes for the preparation of tilapia skin collagen hydrolysates

Wei Wang, Zhonglei Li, Junzhong Liu, Yuejun Wang, Shanhong Liu and Mi Sun
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Wei Wang: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China
Zhonglei Li: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China
Junzhong Liu: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China
Yuejun Wang: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China
Shanhong Liu: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China
Mi Sun: Marine Products Resource and Enzyme Engineering Laboratory, Yellow Sea Fisheries Research Institute, Qingdao, Shandong Province, P.R. China

Czech Journal of Food Sciences, 2013, vol. 31, issue 1, 1-4

Abstract: The tilapia (Oreochromis niloticus) skin hydrolysate was produced by thermal or enzymatic hydrolysis processes. Several product characteristics were studied such as the average molecular weight, 2,2-diphenyl-1-picrylhydrazyl radical-scavenging activity, yield, and protein content, in order to compare thermal hydrolysis and enzymatic proteolysis processes for the hydrolysed tilapia skin collagen production. The effects of the following hydrolysis parameters (retorting time and pH, protease combination, and proteolysis time) were studied. Compared with the thermal hydrolysis process, the enzymatic proteolysis process needed less time and milder conditions, under which hydrolysates could be obtained as low molecular weight antioxidant peptides.

Keywords: fish skin gelatin; hydrolysate; antioxidant activity; autoclaving; proteases (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:31:y:2013:i:1:id:49-2012-cjfs

DOI: 10.17221/49/2012-CJFS

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