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膜分離純化制備中藥提取液膜分離制備中藥浸膏分離純化黃芪/丹參/潘紅花提取液分離純化靈芝/枸杞/魚腥草等膜分離過濾除雜黃連與金銀花膜分離技術(shù)在中藥制藥過程中的應(yīng)用

將膜分離技術(shù)用于中藥浸膏的制備，克服了傳統(tǒng)工藝制備中存在的浸膏崩解緩慢、含雜質(zhì)量高等缺點(diǎn)，縮短了生產(chǎn)周期，提高了浸膏中有效成分的量和藥效，顯著減少了服用量。

將膜分離技術(shù)用于刺五加浸膏的純化精制，先將刺五加浸膏加純化水稀釋至總黃酮量為 15 mg/mL，然后用板框過濾器經(jīng)濾紙、微孔濾膜 ( 0.45μm) 分別進(jìn)行預(yù)過濾，120 ℃ 熱壓 30 min，再用板框過濾器經(jīng)微孔濾膜過濾，再經(jīng)過截留分子質(zhì)量為 20kDa 的中空纖維超濾器過濾，濃縮，收膏，得精制刺五加浸膏。

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將膜分離技術(shù)用于靈芝浸膏的制備，先用截留分子質(zhì)量為 50kDa 的超濾膜 ( 聚醚砜) 對(duì)靈芝水提液進(jìn)行濃縮，滲透液再用截留分子質(zhì)量為 10kDa 的超濾膜( 聚丙烯腈) 進(jìn)行濃縮，最后用截留分子質(zhì)量為 200Da 的納濾膜 ( 醋酸纖維) 將透過 10 kDa 超濾膜的滲透液進(jìn)行濃縮。將二級(jí)超濾濃縮液和納濾濃縮液合并，置于干燥鐵鍋內(nèi)，于 60 ℃ 恒溫干燥箱中干燥至恒定質(zhì)量后，冷卻，即得干浸膏，此法干浸膏收率為 6.892% ，干浸膏中多糖平均量為 9.212 2% ，高于傳統(tǒng)方法所得浸膏中的多糖量( 7.564 8% ) 。

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采用膜分離技術(shù)富集六味地黃糖類，選擇截留分子質(zhì)量為 100 kDa 的管式膜為膜分離介質(zhì)，采用膜分離技術(shù)富集后，六味地黃提取物收率由 20% 降低至 16% 左右，含總糖量由 40% 提高到 60% 以上，運(yùn)用該技術(shù)提高了六味地黃質(zhì)量，可減少服用量。

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