WO2021042754A1 - 一种从绿茶中提取茶多酚的工业化生产方法 - Google Patents
一种从绿茶中提取茶多酚的工业化生产方法 Download PDFInfo
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- WO2021042754A1 WO2021042754A1 PCT/CN2020/089149 CN2020089149W WO2021042754A1 WO 2021042754 A1 WO2021042754 A1 WO 2021042754A1 CN 2020089149 W CN2020089149 W CN 2020089149W WO 2021042754 A1 WO2021042754 A1 WO 2021042754A1
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- green tea
- extract
- industrial production
- ethanol
- production method
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07G—COMPOUNDS OF UNKNOWN CONSTITUTION
- C07G99/00—Subject matter not provided for in other groups of this subclass
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- This application relates to the technical field of tea extracts, in particular to an industrial production method for extracting tea polyphenols from green tea.
- Tea polyphenols are one of the important biologically active components in green tea, and they are a class of polyphenols. Studies have shown that tea polyphenols have a variety of health and pharmacological effects, can scavenge free radicals, have anti-oxidation, antibacterial, anti-viral, anti-ultraviolet radiation, prevent and treat cardiovascular diseases, deodorize, delay aging, anti-tumor, and reverse drug resistance. It has the functions of anti-radiation, etc., and has important applications in the fields of food processing, medicine, cosmetics, and agrochemicals.
- Patent US5879733 mentions a method of ion exchange resin purification after treating green tea with acid. Although the acid used is relatively mild, it has a certain destructive effect on the organic matter in green tea.
- Patent US2006263454 discloses an extraction process for green tea extracted with water and then freeze-dried after centrifugal filtration. It has great limitations, and most of the organic matter in green tea cannot be effectively extracted.
- This application provides an industrial production method for extracting tea polyphenols from green tea.
- An industrialized production method for extracting tea polyphenols from green tea includes the following steps:
- step (1) the green tea is leached twice with 60% ethanol under heating and reflux, and the heating and reflux temperature is 75°C.
- step (2) the extract is concentrated under reduced pressure at 70°C, concentrated to 12-15 times the weight of the green tea raw material, and cooled to room temperature to obtain an extract concentrate.
- the macroporous adsorption resin chromatography column is a Seplite LX-8 resin column.
- step (3) the extraction concentrate is filtered and then added to the macroporous adsorption resin chromatography column.
- step (3) the extraction concentrate is diluted with a double amount of water and filtered through absorbent cotton, and the filtrate is gradually injected into the macroporous adsorption resin chromatography column.
- step (3) the flow rate of the sample loading solution is 1.2 to 2.4 column volumes per hour, and the flow rate after sample loading is 1.2 to 3.6 column volumes per hour.
- step (3) 1 column volume of water, 6 column volume of 20% ethanol, and 8 column volume of 75% ethanol are used for elution.
- step (4) the 75% ethanol elution effluent is concentrated under reduced pressure at 70°C and concentrated to a final weight of 1 to 2 times the weight of the green tea raw material to obtain a concentrated green tea extract aqueous solution.
- step (5) the drying is spray drying, and the temperature in the spray tower is 80-85°C.
- Figure 1 is a schematic flow chart of an industrial production method for extracting tea polyphenols from green tea provided by an embodiment of the application.
- the 75% ethanol elution effluent C2 is concentrated under reduced pressure at about 70°C, and concentrated to a final weight of 1 to 2 times the weight of the input green tea raw material to obtain a concentrated green tea extract aqueous solution D.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicines Containing Plant Substances (AREA)
- Tea And Coffee (AREA)
Abstract
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Claims (10)
- 一种从绿茶中提取茶多酚的工业化生产方法,其特征在于,所述工业化生产方法包括以下步骤:(1)将绿茶用60%乙醇加热回流浸提,过滤得到提取液;(2)将提取液减压浓缩,得到提取浓缩液;(3)将提取浓缩液加入大孔吸附树脂层析柱内,依次以水、20%乙醇和75%乙醇进行洗脱,分别收集20%乙醇洗脱流出液和75%乙醇洗脱流出液;(4)将75%乙醇洗脱流出液减压浓缩,得到经浓缩后的绿茶提取物水溶液;(5)将绿茶提取物水溶液过滤,过滤后的滤液经干燥得绿茶提取物茶多酚。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(1)中,将绿茶用60%乙醇加热回流浸提2次,加热回流温度为75℃。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(2)中,提取液在70℃下减压浓缩,浓缩至绿茶原料重量的12~15倍量,冷却至室温,得提取浓缩液。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(3)中,所述大孔吸附树脂层析柱为Seplite LX-8树脂柱。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(3)中,将提取浓缩液过滤后加入大孔吸附树脂层析柱内。
- 根据权利要求5所述的工业化生产方法,其特征在于,步骤(3)中,将提取浓缩液,用一倍量的水稀释后经过脱脂棉过滤,将滤液逐渐注入大孔吸附树脂层析柱内。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(3)中,上样液流速为每小时1.2~2.4倍柱体积,上样结束后流速为每小时1.2~3.6倍柱体积。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(3)中,洗脱用1倍柱体积的水、6倍柱体积的20%乙醇和8倍柱体积的75%乙醇。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(4)中,75%乙醇洗脱流出液在70℃下减压浓缩,浓缩至终重量为绿茶原料重量的1~2 倍,得到经浓缩后的绿茶提取物水溶液。
- 根据权利要求1所述的工业化生产方法,其特征在于,步骤(5)中,所述干燥为喷雾干燥,喷雾塔内温度为80~85℃。
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CN114344334A (zh) * | 2021-11-26 | 2022-04-15 | 江西纳弗堂制药有限公司 | 一种鹿血冻干饮片及其制备方法 |
CN115501286A (zh) * | 2022-10-10 | 2022-12-23 | 湖南文理学院 | 一种油茶籽壳提取物及其制备方法和应用 |
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CN112981936A (zh) * | 2021-03-19 | 2021-06-18 | 广州市龙格派服饰有限公司 | 一种穿着方便且具有抗菌功能的学生装 |
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CN1785990A (zh) * | 2005-11-22 | 2006-06-14 | 三达膜科技(厦门)有限公司 | 树脂吸附法制备茶多酚的方法 |
CN101643483A (zh) * | 2009-05-26 | 2010-02-10 | 苏州派腾生物医药科技有限公司 | 一种茶多酚的制备方法 |
CN110483592A (zh) * | 2019-09-05 | 2019-11-22 | 上海尹胜咨询管理合伙企业(有限合伙) | 一种从绿茶中提取茶多酚的工业化生产方法 |
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CN108938826A (zh) * | 2018-06-26 | 2018-12-07 | 广西克鲁尼茶叶生物科技有限公司 | 采用树脂吸附提取茶多酚的方法 |
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CN1785990A (zh) * | 2005-11-22 | 2006-06-14 | 三达膜科技(厦门)有限公司 | 树脂吸附法制备茶多酚的方法 |
CN101643483A (zh) * | 2009-05-26 | 2010-02-10 | 苏州派腾生物医药科技有限公司 | 一种茶多酚的制备方法 |
CN110483592A (zh) * | 2019-09-05 | 2019-11-22 | 上海尹胜咨询管理合伙企业(有限合伙) | 一种从绿茶中提取茶多酚的工业化生产方法 |
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CN114344334A (zh) * | 2021-11-26 | 2022-04-15 | 江西纳弗堂制药有限公司 | 一种鹿血冻干饮片及其制备方法 |
CN115501286A (zh) * | 2022-10-10 | 2022-12-23 | 湖南文理学院 | 一种油茶籽壳提取物及其制备方法和应用 |
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