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中国精品科技期刊2020
张欣, 熊幼翎, 陈洁. 美拉德反应对豌豆蛋白水解物乳化性和抗氧化性的影响[J]. 食品工业科技, 2014, (17): 125-129. DOI: 10.13386/j.issn1002-0306.2014.17.018
引用本文: 张欣, 熊幼翎, 陈洁. 美拉德反应对豌豆蛋白水解物乳化性和抗氧化性的影响[J]. 食品工业科技, 2014, (17): 125-129. DOI: 10.13386/j.issn1002-0306.2014.17.018
ZHANG Xin, XIONG You-ling, CHEN Jie. Effect of Maillard reaction on the emulsifying property and antioxidant activity of pea protein hydrolysates[J]. Science and Technology of Food Industry, 2014, (17): 125-129. DOI: 10.13386/j.issn1002-0306.2014.17.018
Citation: ZHANG Xin, XIONG You-ling, CHEN Jie. Effect of Maillard reaction on the emulsifying property and antioxidant activity of pea protein hydrolysates[J]. Science and Technology of Food Industry, 2014, (17): 125-129. DOI: 10.13386/j.issn1002-0306.2014.17.018

美拉德反应对豌豆蛋白水解物乳化性和抗氧化性的影响

Effect of Maillard reaction on the emulsifying property and antioxidant activity of pea protein hydrolysates

  • 摘要: 本文考察了美拉德反应对不同商业蛋白酶(碱性蛋白酶、风味蛋白酶和复合蛋白酶)制备的豌豆蛋白水解物的理化性质、乳化性和抗氧化性的影响。豌豆蛋白水解物分别与葡萄糖、麦芽糊精和葡聚糖在pH7.0,60℃保温48h。结果:体系反应48h后游离氨基含量下降;希夫碱含量增加;反应物荧光强度下降。表明,豌豆蛋白水解物与糖发生了共价结合。SDS-PAGE进一步证实了高分子共聚物的生成。美拉德反应显著提高了风味蛋白酶和复合蛋白酶水解物的乳化能力,尤其是复合蛋白酶水解物与葡聚糖的反应产物表现出了极好的乳化活性和乳化稳定性。各美拉德反应产物均具有显著抑制脂质体氧化的能力(p<0.05)。所有糖中,葡聚糖制备的反应物具有最高的乳化活性和抗氧化活性。因此,葡聚糖参与的美拉德反应可作为提高豌豆蛋白水解物乳化性的一种有效方法,并完好保留水解物的抗氧化活性。 

     

    Abstract: Maillard-type peptide-saccharide complexes ( PSCs) were prepared by heating pea protein hydrolysates ( PPHs) generated with Alcalase, Flavorzyme ( Fla-PPH) and Protamex ( Pro-PPH) , and saccharides ( glucose, maltodextrin, and dextran) in aqueous solutions at pH7.0, 60℃ for 48 h. Physicochemical properties, emulsifying property and antioxidant activity of PSCs were analyzed. After 48 h of incubation, an increased Schiff base production accompanied by free amino group loss and fluorescence attenuation was observed, indicating the covalent conjugation of saccharides to PPHs.SDS- PAGE confirmed the formation of high molecular weight PSC conjugates.PSCs prepared from Fla- PPH and Pro- PPH showed notable improvements in emulsifying capacity, especially the conjugate prepared by Pro-PPH and dextran.All PSCs significantly inhibited the lipid oxidation in the liposomal system ( p < 0.05) . Despite the low degree of glycation relative to glucose and maltodextrin, dextran exhibited the highest efficacy on improving emulsifying property and maintaining the antioxidant potential of PPHs.Therefore, controlled Maillard reaction with dextran, can be used as an effective tool to improve the functionality of antioxidative pea protein hydrolysates.

     

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