Purification of Lac Red Pigment by Macroporous Resin

doi:10.7506/spkx1002-6630-201022049

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (22): 232-236.doi: 10.7506/spkx1002-6630-201022049

• Processing Technology • Previous Articles Next Articles

Purification of Lac Red Pigment by Macroporous Resin

ZHANG Hong1,2，FANG Gui-gan1，ZHENG Hua2，GAN Jin2

1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China ；
2. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China

Received:2010-08-06 Revised:2010-11-04 Online:2010-11-25 Published:2010-12-29
Contact: Zhang Hong E-mail:kmzhhong@163.com

Abstract

Abstract:

The purification of lac red pigment using macroporous absorption resin was investigated in this paper. The absorbance of lac red pigment was used to evaluate the absorption characteristics and desorption parameters of macroporous resins for screening optimal resin and establish an optimal purification processing parameters. Results indicated that type AB-8 macroporous resin had the best absorption capacity. The absorption rate was up to 90% at the condition of absorption solution with 20% ethanol at pH 7. Compared with lac red pigment without treatment of macroporous resin, the color value of lac red pigment treated with macroporous resin exhibited an enhancement of 2.96 folds. Meanwhile, macroporous resin can be repeatedly used. Therefore, it is feasible to purify lac red pigment by using macroporous resin.

Key words: lac red pigment, macroporous adsorption resin, purification

CLC Number:

ZHANG Hong1,2，FANG Gui-gan1，ZHENG Hua2，GAN Jin2. Purification of Lac Red Pigment by Macroporous Resin[J]. FOOD SCIENCE, 2010, 31(22): 232-236.

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Purification of Lac Red Pigment by Macroporous Resin

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