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| 藕节多酚超声波辅助提取工艺优化及其抗油脂氧化能力研究 |
| Optimization of ultrasound-assisted extraction of polyphenols from lotus rhizome node and its antioxidation ability on oils and fats |
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| DOI：10.12166/j.zgyz.1003-7969/2020.04.011 |
| 中文关键词: 藕节 多酚 超声波 Box-Behnken试验设计 抗油脂氧化能力 |
| 英文关键词:lotus rhizome node polyphenols ultrasound Box-Behnken design anti oxidation ability on oils and fats |
| 基金项目:国家自然科学基金项目(51809228)；中医药公共卫生服务补助专项“全国中药资源普查项目”(财社\[2018\]43号) |
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| 中文摘要: |
| 以藕节多酚得率为评价指标，超声时间、超声温度、料液比和乙醇体积分数为影响因素，通过单因素试验和Box-Behnken（BBD）试验设计优化藕节多酚的提取工艺条件，同时采用恒温箱热贮藏试验法研究藕节多酚的抗油脂氧化能力。结果表明：藕节多酚的最佳提取条件为超声时间34 min、超声温度50 ℃、料液比1∶ 20、乙醇体积分数70%，在此条件下藕节多酚得率为(7.11±014)%；藕节多酚能够明显减缓油脂过氧化值的升高趋势，对动植物油脂的自氧化均有明显的抑制作用，且具有一定的浓度依赖性。 |
| 英文摘要: |
| The yield of polyphenols was used as an index, and the ultrasonic time, ultrasonic temeprature, ratio of solid to liquid and volume fraction of ethanol were used as the influence factors, the single factor experiment and Box-Behnken (BBD) design were employed to optimize the extraction process of polyphenols from lotus rhizome node. In addition, the antioxidation ability on oils and fats of polyphenols obtained was studied by thermostat storage method. The results showed that the optimal extraction conditions were obtained as follows: ultrasonic time 34 min, ultrasonic temperature 50 ℃, ratio of solid to liquid 1∶ 20, volume fraction of ethanol 70%. Under the optimal conditions, the yield of polyphenols was (7.11±014)%. The polyphenols from lotus rhizome node could significantly slow down the increasing trend of peroxide value in oil and it had obvious inhibitory effect on the auto-oxidation of animal and vegetable oils, and the effect was kind of concentration-dependent. |
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