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《Food and Fermentation Industries》 2006-11
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Some Physicochemical Properties and Antioxidant Activity of Soybean Short Peptide with High Protein Content

Li Dan 1,2 Li Yuxin2 Li Xiaolei 1 1(College of Biological Sci.& Tech.in Changchun University,Changchun 130012,China)2(National R&D Center for Soybean Processing Technology,Changchun 130022,China)  
Soybean short peptide of 95.5% protein content was a white powder with excellent solubility in water or acid without hygroscopy and strange smell.The typical UV absorption peak of protein was found at 280 nm.Dipeptides,tripeptides and quapeptides of 200~1 000 u occupied 73.65% in total peptides.Free amino acid was 3.17%.SC50,the half-maximal scavenging concentration decreasing DPPH 50%,was 30.304 3 mg/mL.Antioxidant capacity of soybean short peptide with high protein content was 1/2 000 times than that of ascorbic acid.This peptide could be used in foods for people with special needs such as patients,seniors,infants and athletes.
【CateGory Index】: TS214.2
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