摘要
为提高地被竹叶抗氧化物质利用率,采用晒干、阴干、热风干燥、微波干燥和冷冻干燥5种方法控制干燥条件,研究不同干燥方法对黄条金刚竹和鸡毛竹叶提取物总黄酮、总酚和三萜等抗氧化物质含量及抗氧化性能的影响,并做各化合物与抗氧化性能相关性分析。结果表明,不同干燥方法对竹叶抗氧化成分和抗氧化能力都有较大的影响。采用冷冻干燥可使竹叶抗氧化物质含量及抗氧化性能保持最高水平。考虑到成本与干燥周期等诸多因素,地被竹叶最佳干燥方法是:100℃热风干燥或480W微波干燥后90℃热风干燥2h。本研究结果为叶用竹林的合理开发利用提供理论基础。
To improve the utilization ratio of antioxidants in ground bamboo leaves,the effect of five drying methods including sunny drying,shade-drying,heated-air drying,microwave drying and freeze-drying on antioxidant contents and capability in Pleioblastus kongosanensis f.aureostriatus and shibataea chinensis Nakai were evaluated.The result indicated that bamboo leaves treated with freeze-drying method contained highest content of antioxidants,i.e.total flavonoid,total phenolics,total triterpenes and antioxidant activity.However,considering the cost,drying period,we suggested the best drying method of ground bamboo leaves is heated-air drying at 100 ℃ or heated-air drying at 90 ℃ after microwave treaved at 480 W.
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2012年第12期84-90,共7页
Journal of Chinese Institute Of Food Science and Technology
基金
国家自然科学基金项目(31240040)
浙江省公益性项目(2011C32G2100046)
关键词
地被竹叶
干燥方法
总黄酮
总酚
总萜
抗氧化
ground bamboo leaves
drying methods
total flavonoid
total phenolics
total triterpenes
antioxidant
