不同极性柳叶蜡梅叶萃取物总酚含量及其抗氧化、抑菌能力研究
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(黄山学院生命与环境科学学院,安徽 黄山 245041)

作者简介:

吴永祥,男,黄山学院讲师,博士。

通讯作者:

胡长玉(1956—),男,黄山学院副教授,硕士。E-mail:hcy@hsu.edu.cn

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基金项目:

安徽省高校自然科学研究重点项目(编号:KJ2017A398);2016年度安徽省大学生创新创业训练计划项目(编号:AH201610375055);博士人才引进启动基金项目(编号:2016xkjq004)


Study on total polyphenol content and antioxidant, antimicrobial activities of different polarity fractions of Chimonanthus salicifolicus Hu leaves
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(College of Life and Environment Science, Huangshan University, Huangshan, Anhui 245041, China)

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    摘要:

    采用甲醇回流提取、梯度萃取得到正己烷萃取物、二氯甲烷萃取物、乙酸乙酯萃取物、正丁醇萃取物和水萃取物5个不同极性部分,以多酚含量、还原能力、对1,1-二苯基-2-三硝基苯肼(DPPH) 自由基的清除能力及抑制微生物生长为评价指标,研究其体外抗氧化和抑菌活性能力。结果表明:柳叶腊梅叶多酚量较为丰富,乙酸乙酯萃取物含量最多,为(309.5±4.81) mg/g。柳叶腊梅叶萃取物具有较强的抗氧化活性,其还原能力和对DPPH自由基清除能力随其浓度的增加而增强。甲醇、正己烷、二氯甲烷、乙酸乙酯、正丁醇和水萃取物对DPPH自由基清除能力的半数抑制浓度 (IC50) 值分别为1.24,1.11,0.61,0.48,0.98,1.36 mg/mL。柳叶腊梅叶萃取物对大肠杆菌、金黄葡萄球菌、枯草芽孢杆菌和绿脓杆菌均有抑制作用,二氯甲烷萃取物的抑菌活性最显著,其对4种受试菌的最低抑制浓度为2 mg/mL。故柳叶腊梅叶萃取物具有较好的抗氧化和抑菌特性,为进一步分离提取活性化合物提供依据。

    Abstract:

    Chimonanthus salicifolicus Hu leaves extracts were prepared by methanol circumfluence extraction. Five fractions were obtained by extraction with different polar solvents including n-hexane, dichloromethane, ethyl acetate, n-butanol and water. Then fractions were detected by total polyphenol content, reducing power, scavenging DPPH free radical and antimicrobial activities. The results showed that all the fractions exhibited high content of total polyphenol, and ethyl acetate fraction had the highest phenolic compounds, with the content of (309.50±4.81) mg/g. The fractions had strong antioxidative capacities such as reducing power and DPPH free radical scavenging ability. The fractions of methanol, n-hexane, dichloromethane, ethyl acetate, n-butanol and water had certain scavenging ability on DPPH free radical with IC50 of 1.24, 1.11, 0.61, 0.48, 0.98 and 1.36 mg/mL, respectively. The fractions also had the inhibiting effects on E. coli, S.aureus, B.subtilis and P.aeruginosa. Dichloromethane fraction presented the best antimicrobial effect than other fractions. Its MIC against four common bacterial strains was 2 mg/mL. In conclusion, the fractions have good antioxidant and antimicrobial activities, and this research was profitable for the further study of the separation of active compounds from Chimonanthus salicifolicus Hu leaves.

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吴永祥,王祥,江海涛,等.不同极性柳叶蜡梅叶萃取物总酚含量及其抗氧化、抑菌能力研究[J].食品与机械,2017,33(8):150-154.
WUYongxiang, WANGXiang, JIANGHaitao, et al. Study on total polyphenol content and antioxidant, antimicrobial activities of different polarity fractions of Chimonanthus salicifolicus Hu leaves[J]. Food & Machinery,2017,33(8):150-154.

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  • 在线发布日期: 2023-03-10
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