摘要
采用不同极性溶剂对新疆种植的札一和马可波罗啤酒花废弃枝叶的乙醇提取物进行不同极性部位的分离,以羟自由基、1,1-二苯基-2-三硝基苯肼自由基、β-胡萝卜素-亚油酸及磷钼酸4个不同的抗氧化活性评价体系对获得的各提取物的抗氧化活性进行比较性研究,并与提取物中多酚、黄酮含量进行相关性分析。结果表明,乙醇提取物及各极性部位均具有一定的抗氧化性。其中,乙酸乙酯提取物中的多酚和黄酮的含量均最高,其在主枝、侧枝和叶子的含量范围分别为5.80~34.20 mg/g和2.00~18.00 mg/g;水相中最低,上述各物质的含量范围仅为0.73~11.05 mg/g和0.06~5.74 mg/g。相关性分析表明,啤酒花主枝、侧枝和叶子抗氧化活性与其多酚、黄酮含量具有显著的相关关系(P<0.05)。
The ethanol extracts of abandoned hop branches and leaves of SA-1 and Marco Polo hop varieties grown in Xinjiang were separated by using different polar solvents. The antioxidant activities of the resulting extracts were studied by four in vitro assays： hydroxyl radical and 1,1-diphenyl-2-picrylhydrazyl radical, β-carotene-linoleic acid and phosphomolybdenum model systems and were correlated with the contents of polyphenols and flavonoids. The results showed that all samples displayed antioxidant activity. Ethyl acetate extracts from hop main stems, side stems, and leaves had the highest contents of phenols and flavonoids, which were 5.80–34.20 and 2.00–18.00 mg/g, respectively. On the contrary, water extracts had the lowest contents of phenols and flavonoids, which were 0.73–11.05 and 0.06–5.74 mg/g, respectively. The correlation analysis showed that hop main stems, side stems and leaves exhibited significant relationship between antioxidant activity and the contents of phenols and flavonoids（P 0.05）.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2018年第3期41-48,共8页
Food Science
基金
国家自然科学基金地区科学基金项目(31360403)
关键词
啤酒花
废弃枝叶
多酚
黄酮
抗氧化性
相关性
hop
abandoned branches and leaves
polyphenols
flavonoids
antioxidant activity
correlation
