塔拉单宁液气射流氧化法制备鞣花酸

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摘要为解决五倍子原料稀缺的问题,以塔拉粉为原料,采用液气射流技术对塔拉单宁溶液进行氧化制备鞣花酸,探究鞣花酸的纯化方案,确定一条比较理想的工艺技术。通过高效液相色谱仪、紫外可见分光光度计、傅里叶变换红外光谱仪、同步热分析仪检测分析得到的样品。结果表明,以塔拉粉为原料制备鞣花酸的较优工艺条件为:采用水提法提取得到塔拉单宁溶液,塔拉单宁浓度为30 g·L^-1,用12% NaOH溶液调节反应液的pH值至8.5,反应温度30 ℃,反应时间6 h,所得到的固相经碱溶酸沉后其鞣花酸的收率为44.58%,质量分数为 88.69%,选用溶剂洗涤法对碱溶酸沉后鞣花酸样品进行再纯化,此时得到鞣花酸的收率为61.70%,质量分数为94.69%。此制备方法大幅度缩短了制备的反应时间且质量分数较高。

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	李瑞君
	徐涓
	张弘
	刘兰香
	马金菊
	张加研

关键词：塔拉塔拉单宁鞣花酸液气射流

Abstract： In order to solve the problem of scarce raw materials of gallnut tannin, Tara powder was used as raw material to prepare ellagic acid and liquid-air jet technology was used to oxidize Tara Tannin solution. The purification process of ellagic acid was explored. Samples were detected and analyzed by high performance liquid chromatograph, ultraviolet visible spectrophotometer, Fourier transform infrared spectrometer, and synchronous thermal analyzer. The results show that, the better technological conditions for the preparation of ellagic acid from Tara powder are: Tara Tannin solution is obtained by water extraction, the Tara Tannin concentration is 30 g·L^-1, the pH of the reaction solution is adjusted with 12% NaOH to be 8.5, the reaction temperature is 30 ℃, the reaction time is 6 h. Under this condition, the yield and mass fraction of ellagic acid were 44.58% and 88.69% after alkali soluble acid precipitation. Solvent washing method was used to purify ellagic acid samples after alkali dissolution and acid precipitation. At this time, the yield of ellagic acid was 61.70% and with a mass fraction of 94.69%. The preparation method greatly shortens the reaction time and has a high mass fraction.

Keywords： Tara Tara Tannin ellagic acid liquid-air jet

Received 2022-06-14;

Fund:中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2021SY011);云南省基础研究计划青年项目(2019FD028);国家重点研发计划项目(2018YFD0600404)。

Corresponding Authors: 张加研,教授,E-mail:1428368816@qq.com。 Email: 1428368816@qq.com

About author: 李瑞君(1997-),女,硕士研究生,研究方向为化学。

引用本文:

李瑞君, 徐涓, 张弘, 刘兰香, 马金菊, 张加研.塔拉单宁液气射流氧化法制备鞣花酸[J]. 化学工业与工程, 2024,41(1): 40-46

LI Ruijun, XU Juan, ZHANG Hong, LIU Lanxiang, MA Jinju, ZHANG Jiayan.Preparation of ellagic acid from Tara Tannin oxidation by liquid-air jet[J]. Chemcial Industry and Engineering, 2024,41(1): 40-46

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