猪皮胶原多肽的体外抗氧化特性研究

以猪皮胶原多肽为原料,研究其羟自由基清除能力、还原能力、对Fe2+诱导的脂质过氧化抑制能力以及对猪油氧化的抑制效果,考察其体外抗氧化特性.结果表明:在10mg/mL～50mg/mL浓度范围内,猪皮胶原多肽具有一定的羟自由基清除能力、还原能力和对Fe2+诱导的脂质过氧化抑制能力,且随着浓度的增加抗氧化作用也增强,当浓度为50mg/mL时,对羟自由基的清除率为56.38％,还原力为0.909,对Fe2+诱导的脂质过氧化抑制率为43.34％;不同添加量的猪皮胶原多肽对猪油氧化均有明显的抑制作用,当添加量为2％时,抗氧化效果优于0.02％的叔丁基羟基茴香醚(BHA).猪皮胶原多肽具有一定的体外抗氧化作用.

Antioxidation of pig skin collagen peptide in Vitro

The antioxidation of pig skin collagen peptide in Vitro was studied by the hydroxyl radical scavenging,reductive ability,inhibition of lipid oxidation induced by Fe2＋ as well as oxidation inhibition on lard.The results showed that,in 10mg/ml~50mg/ml concentration range,pig skin collagen peptide has a certain amount of hydroxyl radical scavenging ability,reductive ability and inhibition capacity of lipid oxidation induced by Fe2＋,and antioxidant effect increased with concentration increasing,when the concentration reached 50mg/ml,the hydroxyl radical scavenging ability was 56.38%,the reductive ability was 0.909,and inhibition capacity of lipid oxidation induced by Fe2＋ was 43.34%;different amounts of the pig skin collagen peptides had oxidation inhibition on lard,when the amount was 2%,the antioxidant effect was better than the butyl hydroxy anisd（BHA） of 0.02%.Pigskin collagen peptide has antioxidation effects in vitro.