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《Shandong Chemical Industry》 2007-12
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Study on the Technology for Applying Pressurized Solvent-extraction Tannic Acid from Chinese Galls

SHEN Ming-le(Department of Chemical Engineering Nanyang Institute of Technology,Nanyang 473044,China)  
Filling the Chinese galls in copper container, extract tannic acid by water with pressurized metering pump.The experiments prove the tannic acid's extraction rate above 99% in 100 minutes when the Chinese galls' granularity is between 3~5mm and galls/water is 1/5.The closed extraction ensure the colour of products lighter and achieve higher purity.
【CateGory Index】: TQ461
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