喀什甜石榴与会理青皮石榴品质及抗氧化 活性的比较

目的 比较新疆喀什甜石榴和四川会理青皮石榴两个品种的果实品质和抗氧化活性。方法 测定了这两个石榴品种的品质、糖酸含量、总花色素苷、总酚及其抗氧化能力。结果 新疆喀什甜石榴的可溶性固形物含量、籽粒色饱和度、苹果酸含量、总花色素苷含量和总酚含量均高于四川会理青皮石榴；而四川会理青皮石榴的葡萄糖含量和果糖含量则高于喀什甜石榴；喀什甜石榴和会理青皮石榴籽粒的总抗氧化能力分别为211.25 U和178.97 U；DPPH自由基清除率分别为0.87和0.82；石榴籽粒中抗氧化活性分别与总酚、总花色素苷成正相关。结论 两个石榴品种在果实品质和抗氧化活性方面各有特点,这为石榴品种的品质评价和果实加工利用提供了参考依据。

Comparison of quality and antioxidant activity between Kashi sweet pomegranate and Huili green peel pomegranate

Objective To compare the fruit quality and antioxidant activity between Xinjiang Kashi sweet pomegranate and Sichuan Huili green peel pomegranate. Methods Fruit quality, sugar and acid composition, total anthocyanins, total phenols and antioxidant capacity of these two pomegranate cultivars were determined. Results Soluble solids, aril color saturation, malic acid content, total an-thocyanins and total phenols of Kashi sweet pomegranate were higher than those of Huili green peel pomegranate, while glucose and fructose contents of Huili green peel pomegranate were higher than those of Kashi sweet pomegranate. The total antioxidant capacity of Kashi sweet pomegranate and Huili green peel pomegranate were 211.25 U and 178.97 U, respectively, and DPPH radical scavenging rates were 0.87 and 0.82, respectively. The antioxidant activity of the aril in the two pomegranate cultivars was positively correlated with total phenols and total anthocyanins. Conclusions Fruit quality and antioxidant activity of the two pomegranate cultivars have their own characteristics, which provide a theoretical basis for the quality assessment, processing and utilization of pomegranate fruit.