Abstract
With black beans as raw materials, different factors on natural black beans peptide yield influence, and through the establishment of DPPH • system, OH • system, reducing power system measurement for the determination of different concentration of black soya bean peptide oxidation stability. The results showed that the liquid material ratio 17.5,leaching 42°C,extracting 55 min, black beans peptide extraction is 2.386 mg/g. Black beans peptide in various system all have certain oxidative stability, in the concentration of 0.04mg/ml to 74.05% clearance of DPPH• , in 0.06mg/ml concentration of OH•clearance rate is 80.48%, 0.08 mg/ml concentrations reduction force is 0.745, and in these three system natural black beans peptide oxidation stability are better than those of contrast VC is strong .
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