银杏叶提取物微胶囊化研究

    Microencapsulation of the extracts from gingko leaves

    • 摘要: 为使银杏叶提取物能在食品领域得到充分有价值的应用,探索采用微胶囊技术来解决银杏类黄酮难溶于水及强烈苦味的问题。本研究选用阿拉伯胶和β-环状糊精作为银杏黄酮微胶囊壁材,通过喷雾干燥进行微胶囊化。结果表明:选用阿拉伯胶和β-环状糊精(1∶1)作为银杏黄酮的微胶囊壁材,能达到较好的微胶囊化效果,且芯材与壁材的最佳配比为0.1 g/g。最佳喷雾干燥工艺条件为:进料固形物浓度为25%,进风温度为180℃,进料速度为35 mL/min。产品微胶囊化效率达90%以上。

       

      Abstract: Microencapsulation of extracts from gingko leaves can be used as a function food additive to solve some problems such as undissolved property in water and the bitterness of gingko flavonoids. Spray-drying was employed to microencapsulate extracts from gingko leaves using Arabin gum and β-cyclodextrin as the wall materials and the extracts as the core material. The results showed that the effect of microencapsulation was better as Arabin gum and β-cyclodextrin were used as the wall materials and the ratio of the wall materials to the core material was 0.1 g/g. The best conditions of spray-drying were as follows: 25% of solid, the inlet-air temperature 180℃ and the feed-speed of mixture 35 mL/min. The microencapsulated efficiency of the product reached more than 90%.

       

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