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Cultivar Variation in Physicochemical and Antioxidant Activity of Alabama-Grown Blackberries

机译：阿拉巴马州种植黑莓的理化和抗氧化活性品种变化

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摘要

Blackberries are an excellent source of natural antioxi-dants. Fully ripened fruit of 'Apache', 'Arapaho', 'Chester', 'Loch Ness', 'Navaho' and 'Triple Crown' thornless blackberries were evaluated for their physicochemical and antioxidative activity.There were no consistent differences for variation in initial pH, titratable acidity (TA), total soluble sugar (TSS) and TSS/TA ratio values determined. Differences among cultivars with respect to reduced ascorbic acid (AA) were established, but there were no differences in either oxidized ascorbic acid (DHA) or total ascorbic acid (TAA) content. The antioxidant activity as determined by ABTS radical cation procedure for fractionated crude fruit extracts varied in response to parameters evaluated, Hydro-philic antioxidant activity (HAA) was not different among cultivars evaluated. In contrast, differences were found in lipophilic antioxidant activity (LAA) and total antioxidant activity (TAA).
机译：黑莓是天然抗氧化剂的极好来源。对'Apache'，'Arapaho'，'Chester'，'Loch Ness'，'Navaho'和'Triple Crown'无刺黑莓的完全成熟果实的理化和抗氧化活性进行了评估。初始pH值的变化没有一致的差异。 ，可滴定酸度（TA），总可溶性糖（TSS）和TSS / TA比值确定。确定了不同抗坏血酸（AA）品种之间的差异，但氧化抗坏血酸（DHA）或总抗坏血酸（TAA）含量均无差异。如通过ABTS自由基阳离子法测定的，对于分级分离的粗果提取物的抗氧化活性随所评估的参数而变化，所评估的品种之间的亲水抗氧化活性（HAA）并无差异。相反，发现亲脂性抗氧化剂活性（LAA）和总抗氧化剂活性（TAA）有所不同。

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