کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
620837 | 882516 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of activated charcoal treatment of alkaline hydrolysates from sugarcane bagasse on purification of p-coumaric acid Effect of activated charcoal treatment of alkaline hydrolysates from sugarcane bagasse on purification of p-coumaric acid](/preview/png/620837.png)
The brown compounds in the ultrafiltration permeates resulting from the alkaline-hydrolysis of sugarcane bagasse were determined to be composed mainly of lignin monomers. These monomers significantly influence the separation and purification of p-coumaric acid. Addition of 3% of activated charcoal removed 78.10% of the compounds’ color value but adsorbed only 14.36% of the available coumaric acid in alkaline conditions. Decoloration by the application of activated charcoal before purification by anion exchange chromatography ensured the repeated use of the resins and crystallization of p-coumaric acid, thus significantly reducing preparation costs. A total of 8.56 g of crystal contained 95.2% of coumaric acid was obtained from 1 kg of sugarcane bagasse after decoloration and separation.
► Brown compounds are usually produced after alkaline-hydrolysis of sugarcane bagasse and other fiber-containing agro by-products.
► We determined them mainly as lignin monomers.
► Activated charcoal could remove most of them.
► High-purity coumaric acid after activated charcoal adsorption was prepared by anion exchange chromatography.
Journal: Chemical Engineering Research and Design - Volume 89, Issue 10, October 2011, Pages 2176–2181