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Extraction of nutraceutical compounds from licorice roots with subcritical water

机译：亚临界水从甘草根中提取营养保健品

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Subcritical water (SBW) extraction of licorice root (LR) was carried out at four different temperatures (50, 100,200, and 300 °C) for 10,30, or 60min, and nutraceutical compound levels of the SBW extracts were evaluated. SBW treatment of LR increased the antioxidant activity of extracts. Higher radical scavenging activity, reducing power, and total phenol content of the LR extracts were found when SBW extraction was carried at 200 °C for 60 min or at 300 °C for more than 30 min. The main active compounds such as glycyrrhetic acid (GA) and glycyrrhizin (GL) showed different extraction patterns. GA and GL were present at maximum levels following SBW extraction at 100 °C for 30 and 60 min, respectively. However, liquiritin (LQ), another nutraceutical compound of LR, showed the highest levels following extraction at 300°C for 60 min. The results indicated that the temperature and time of SBW extraction significantly affected the antioxidant activities and nutraceutical compound levels of LR extracts.
机译：在四个不同的温度（50、100、200和300°C）下，亚临界水（SBW）提取甘草根（LR）持续10,30或60分钟，并评估了SBW提取物的营养成分水平。 SBW处理LR可提高提取物的抗氧化活性。当在200°C下进行60分钟或300°C下进行SBW提取30分钟以上时，发现LR提取物具有更高的自由基清除活性，还原能力和总酚含量。甘草次酸（GA）和甘草甜素（GL）等主要活性化合物表现出不同的提取模式。 SBW在100°C提取30分钟和60分钟后，GA和GL的含量最高。但是，LR的另一种营养成分liquiritin（LQ）在300°C提取60分钟后显示最高水平。结果表明，SBW提取的温度和时间显着影响LR提取物的抗氧化活性和营养成分。

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