期刊
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
卷 51, 期 3, 页码 449-457出版社
SPRINGER INDIA
DOI: 10.1007/s13197-011-0512-z
关键词
Shrimp waste; Protein hydrolysate; Antioxidative activity
Protein hydrolysates prepared by hydrolysis of shrimp waste (Penaeus monodon and Penaeus indicus) for 90 min. using Alcalase enzyme following pH-stat method. Antioxidative activities of SWPH were assessed determining FRAP, ABTS and DPPH radical scavenging activities, which increased linearly with increasing concentration of protein hydrolysate upto 5 mg/ml maintaining good correlation. SWPH showed high stability over wide ranges of pH (2-11) and temperature (up to 100 A degrees C for 150 min), in which the activity of more than 80% was retained. Protein hydrolysate solution with a concentration of 5 mg/ml significantly lowered TBA values of Croaker fish fillet and maintained yellowishness of skin colour compared to untreated control sample during 10 days of refrigerated storage at 4 A degrees C. SWPH also restricted the increase of PV and FFA values in Croaker fish fillet within acceptable limit.
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