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Abstract

The change of scavenging activity on DPPH radical, hydroxyl free radical, and reducing power capacity was selected as the index to investigate the effects of pH, temperature, sucrose, preservatives, metal ions and gastrointestinal digestion in vitro on the antioxidant stability of collagen peptides from swimming bladders. The results showed that collagen peptides from swimming bladders kept high activity in acidity environment but lose it in alkaline condition; however, the strong heat-resistance was found; sucrose, NaCl and preservatives (sodium Benzoate and Sodium sorbate) had little effects on its antioxidation stability, but high levels of salt made it lost antioxidation stability partially. Metal ions Cu2+ and Zn2+ had a larger effect on the antioxidant stability of collagen peptides from swimming bladders than Ca2+ , and Mg2+ and K+ showed no significant effect. collagen peptides from swimming bladders had a good digestibility, and gastrointestinal enzymes had no effects on its activity.

Publication Date

9-28-2017

First Page

9

Last Page

14

DOI

10.13652/j.issn.1003-5788.2017.09.003

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