柱状田头菇(茶树菇)子实体物理改性后体外抗氧化活性研究

摘要

The extracts from the physically modified fruiting bodies of Agrocybe cylindracea were analyzed for their antioxidant activities. The results showed that modifying the samples using ultra high pressure led to a higher free radical scavenging activity,reducing power, chelating activity, total antioxidant activity and contents of total phenols than those found in the controlled samples.Superfine grinding to the samples resulted in less antioxidant activities than those treated by ultra high pressure, but higher than those observed in the control. The concentration of the extracts was directly related to the proportion to the antioxidant effect. Physical modification enhanced antioxidant function by shifting the content and texture of materials.%研究了柱状田头菇子实体经物理改性前后70%乙醇提取物的体外抗氧化活性,结果显示超高压处理过的样品的自由基清除能力、还原力、铁鳌合能力、总抗氧化活性和总酚含量均高于对照:超微粉碎样品的抗氧化能力略低于超高压样品,但仍优于对照;各种样品的浓度与抗氧化能力正相关.物理改性通过改变物料的相对含量与结构强化了柱状田头菇抗氧化的功能特性.