壳聚糖-甘蔗渣活性炭复合材料的制备及在糖汁清净中的应用  

Preparation of Chitosan-Bagasse Activated Carbon Composite Materialand Its Application in Sugar Juice Clarification

作　　者：干莉娜 张文康[1] 赵家欣 唐婷范 卫政涛 程昊 GAN Li-na;ZHANG Wen-kang;ZHAO Jia-xin;TANG Ting-fan;WEI Zheng-tao;CHENG Hao(Guangxi Key Laboratory of Green Processing of Sugar Resources,College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Guangxi Eco-engineering Vocational and Technical College,Liuzhou 545006,China;Collaborative Innovation Center of Sugarcane Industry Co-constructed by Province and Ministry of Education,Nanning 530004,China)

机构地区：[1]广西科技大学生物与化学工程学院,广西糖资源绿色加工重点实验室,广西柳州545006 [2]广西生态工程职业技术学院,广西柳州545006 [3]蔗糖产业省部共建协同创新中心,南宁530004

出　　处：《中国调味品》2024年第4期25-31,共7页China Condiment

基　　金：广西自然科学基金重点项目(2019GXNSFDA245025);广西自然科学基金面上项目(2022GXNSFAA035490);“八桂之光”访学研修计划资助项目(桂组通字[2022]66号);广西高等学校高水平创新团队及卓越学者资助项目(桂教人[2014]7号)。

摘　　要：以甘蔗渣生物质为原料制备了甘蔗渣活性炭,并将其与壳聚糖交联复合,得到了壳聚糖-甘蔗渣活性炭,然后应用于糖汁脱色,考察了材料用量、吸附温度、脱色时间和pH对脱色效果的影响。结果表明,KOH的浓度为20%、活化温度为700℃时,甘蔗渣活性炭的吸附性能最好,当甘蔗渣活性炭的用量为0.10 g、吸附温度为50℃、脱色时间为60 min、pH为5.0时,糖汁脱色率最高,达到84.35%;当壳聚糖-甘蔗渣活性炭的用量为0.15 g、吸附温度为70℃、脱色时间为60 min、pH为6.0时,糖汁脱色率最高,达到97.12%。Bagasse activated carbon is prepared from bagasse biomass,and it is cross-linked with chitosan to obtain chitosan-bagasse activated carbon,and then it is applied to sugar juice decolorization.The effects of material dosage,absorption temperature,decolorization time and pH on decolorization effect are investigated.The results show that when the concentration of KOH is 20%and the activation temperature is 700℃,the adsorption performance of bagasse activated carbon is the best.When the dosage of bagasse activated carbon is 0.10 g,the adsorption temperature is 50℃,the decolorization time is 60 min and the pH is 5.0,the decolorization rate of sugar juice is the highest,reaching 84.35%.When the dosage of chitosan-bagasse activated carbon is 0.15 g,the adsorption temperature is 70℃,the decolorization time is 60 min and the pH is 6.0,the decolorization rate of sugar juice is the highest,reaching 97.12%.

关 键 词：壳聚糖 甘蔗渣活性炭 糖汁 吸光度 脱色率 

分 类 号：TS244.2[轻工技术与工程—制糖工程]