Semi-batch extraction of anthocyanins from red grape pomace in packed beds:: experimental results and process modelling
Semi-batch extraction of anthocyanins from red grape pomace in packed beds:: experimental results and process modelling
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DOI：
10.1016/s0009-2509(02)00320-2
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发表时间：
2002-09-01
影响因子：
4.7
通讯作者：
de la Ossa, EM
中科院分区：
文献类型：
--
作者：
Mantell, C;Rodríguez, M;de la Ossa, EM
研究了填充床半间歇提取花色苷的工艺。以甲醇为溶剂，研究了从红葡萄酒酿造的果渣中获得的坦普兰尼洛葡萄皮的原料。结果表明，大的扩散效应，由于强大的控制从传质。使用高温和高流速获得最佳结果。提出了一种球形颗粒床的穿透模型。该模型提供了固体基质内溶质的扩散系数的值。可以看出，模型的调整是令人满意的，并且它能够在合理的程度上预测萃取过程的产率。(C)2002爱思唯尔科技有限公司版权所有。
A semi-batch extraction process of anthocyanins was studied in a packed bed. Methanol was used as solvent and the raw material studied consisted of skins of the tempranillo grape, which was obtained from the pomace from red wine vinification. The results show large diffusional effects due to strong control from the mass transfer. The best results were obtained using a high temperature and a high flow rate. A penetration model is proposed in terms of a bed of spherical particles. The model provides a value for the diffusion coefficient of the solute within the solid matrix. It can be seen that the adjustment of the model is satisfactory and that it is able to predict, to a reasonable extent, the yield of the extraction process. (C) 2002 Elsevier Science Ltd. All rights reserved.