傅里叶变换红外光谱
水溶液
抗氧化剂
色谱法
化学工程
作者
Xiaorong Song,Zhihui Chai,Yuan Zhu,Chenglin Li,Xinquan Liang
标识
DOI:10.1016/j.carbpol.2019.04.043
摘要
Abstract The phenolic substances in sugar cane juice affect the color value of white sugar. A magnetic chitosan-modified-diatomite (MCMD), as a new type of clarifying agent for sugar, prepared via a co-precipitation method combined with cross-linking treatment was firstly used to adsorb two primary phenolic acids of sugarcane juice: gallic acid (GA) and caffeic acid (CA). The maximum adsorption capacities for GA and CA by MCMD were 31.949 mg g–1 and 27.640 mg g–1, respectively. Additionally, our results showed that adsorption of GA and CA on MCMD fitted well with the pseudo-second-order model and Langmuir equation, respectively. The adsorption, a physical spontaneous endothermic process, might have involved electrostatic attraction and micropore filling. Importantly, MCMD has good regenerability and achieves better sulfur-free clarification of sugar cane juice and improves more significantly the food safety of white sugar than the traditional decolorization method.
科研通智能强力驱动
Strongly Powered by AbleSci AI