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首页> 外文期刊>Separation and Purification Technology >A novel process for extraction of natural sweetener from licorice (Glycyrrhiza glabra) roots
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A novel process for extraction of natural sweetener from licorice (Glycyrrhiza glabra) roots

机译：从甘草根中提取天然甜味剂的新方法

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摘要

Pressurized hot water extraction (PHWE) is a very useful technique for recovering bioactive molecules from natural materials using subcritical compressed liquid water in the temperature range of 50-150 °C. A novel process has been developed for making a natural sweetener from licorice (Glycyrrhiza glabra) roots involving selective chemical reaction and easy separation, for recovering mono-ammonium gly-cyrrhizate (MAG) using hot water with dissolved ammonia and pressurized with carbon dioxide. The performance of the novel PHWE process has been evaluated to ascertain the optimum process parameters to maximize the recovery of MAG by varying the parameters, such as temperature (30-120 °C), pressure (1-10atm), extraction time (60-120min), water-to-feed ratio (20-40ml/g), number of stages (1 -3), stirring rate (0-350 rpm), ammonia concentration (0.01 -4%, w/v), and grinding. The quantification of MAG recovered in the extract has been based on the vanillin sulfuric acid method using UV spectrophotometer. The maximum recovery of MAG from licorice roots has been achieved at 110 °C and 5 atm with the ratio of 40ml/g of 0.01% (w/v) ammonia solution to powdered feed after 90min of extraction.
机译：加压热水萃取（PHWE）是一种非常有用的技术，可在50-150°C的温度范围内使用亚临界压缩液态水从天然材料中回收生物活性分子。已经开发了一种新的方法，该方法用于从甘草（甘草）根中制备天然甜味剂，该方法涉及选择性的化学反应，并且易于分离;使用溶解有氨的热水并用二氧化碳加压回收甘草酸单铵（MAG）。已评估了新型PHWE工艺的性能，以通过改变温度，温度（30-120°C），压力（1-10atm），萃取时间（60- 120分钟），进料水比（20-40ml / g），阶段数（1-3），搅拌速度（0-350 rpm），氨浓度（0.01 -4％，w / v）和研磨。提取物中回收的MAG的定量基于使用紫外分光光度计的香草醛硫酸法。提取90分钟后，在110°C和5个大气压下以40 ml / g的0.01％（w / v）氨溶液与粉状饲料的比例实现了从甘草根中最大程度地回收MAG。

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