Ercisli Sezai, Akbulut Mustafa, Ozdemir Ozlem, Sengul Memnune, Orhan Emine
Department of Horticulture, Faculty of Agriculture, Ataturk University, Erzurum, Turkey.
Int J Food Sci Nutr. 2008 Sep;59(6):477-82. doi: 10.1080/09637480701538262.
The amount of research on the healthy benefits of fruits has increased in recent years. The objective of the present study is to determine the antioxidant activity and total phenolic content of 18 selected persimmon genotypes. The genotypes were established in a collection parcel at the Black Sea Agricultural Research Institute, Samsun, Turkey. The beta-carotene bleaching method was used to determine antioxidant activity and the Folin-Ciocalteau colorimetric method to determine total phenolics in persimmon fruits. The total phenolic content in fruits, estimated as gallic acid equivalents, ranged from 15.7 mg/g dry weight for 08 TH 12 to 42.3 mg/g gallic acid equivalent for the 08 TH 10 genotype. The highest antioxidant activity was observed in 08 TH 10 as 91.6%, while the lowest was in 14 TH 01 (51.7%), respectively. The antioxidant activities of butylated hydroxyanisole and butylated hydroxytoluene were 93.4% and 91.8%, respectively. A low correlation (R = 0.711) was obtained between total phenolic content and antioxidant activity among genotypes. The results indicate that antioxidant activity in persimmon fruits is strongly affected by genotype.
近年来，关于水果健康益处的研究数量有所增加。本研究的目的是测定18种选定柿子基因型的抗氧化活性和总酚含量。这些基因型在土耳其萨姆松黑海农业研究所的一个收集地块中培育。采用β-胡萝卜素漂白法测定抗氧化活性，采用福林-西奥尔特法比色法测定柿子果实中的总酚含量。以没食子酸当量估算，果实中的总酚含量范围为08 TH 12基因型的15.7毫克/克干重至08 TH 10基因型的42.3毫克/克没食子酸当量。在08 TH 10中观察到最高的抗氧化活性，为91.6%，而在14 TH 01中最低，为51.7%。丁基羟基茴香醚和丁基羟基甲苯的抗氧化活性分别为93.4%和91.8%。在基因型中，总酚含量与抗氧化活性之间的相关性较低（R = 0.711）。结果表明，柿子果实中的抗氧化活性受基因型的强烈影响。
