微波辅助提取玉米芯中木聚糖条件优化 Optimization of Extraction Conditions for Xylan from Corncob by Microwave-assisted Extraction.pdfVIP
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微波辅助提取玉米芯中木聚糖条件优化 Optimization of Extraction Conditions for Xylan from Corncob by Microwave-assisted Extraction
59==- 微波辅助提取玉米芯中木聚糖条件优化 徐艳阳。李美玲,隋思瑶,宋艳翎,张凌 (吉林大学生物与农业工程学院,吉林长春130022) 摘要:应用微波辅助法提取玉米芯木聚糖。通过正交试验设计,得出微波辅助法提取玉米芯木聚糖的最佳条件为: 粒度80目的玉米芯,以体积分数为2.0%的硫酸溶液为提取溶剂,微波功率为539W,微波时间为5min,固液比 为1:10(g/mL)。在此条件下,通过试验得出,玉米芯木聚糖提取率达30.21%。与高温蒸煮提取方法相比,微波辅助法 时间缩短了92%。 关键词:微波辅助提取;玉米芯;木聚糖 ofExtractionConditionsfor fromCorncobMicrowave-assistedExtraction Optimization Xylan by XU Yan-yang,LIMei-ling,SUISi—yao,SONGYan—ling,ZHANGLing of and 1 Engineering,JilinUniversity,Changchun30022,Jilin,China) (CollegeBiologicalAgricultural wasusedtoextractfrom extraction Abstract:Microwave—assisted、extraction technique xylan corncob.Optimum conditionswereobtained extractionconditionsfor wereas byorthogonalexperimentaldesign.Optimal xylan of meshextraction asextraction follows:corncob80 as material,2.0%H2s04solvent,microwave particle of539 timeof5 rateof tosolidof the power W,extractionmin,and liquid 1:10(g/mL).Underoptimum of fromcorncobwas with steam extraction, conditions,yieldxylan 30.21%.Comparedhightemperature microwave-assistedextraction can shortenextractiontime92%. techniquegreatly by words:microwave—assisted Key extraction;comcob;xylan 我国是一个农业大国,每年都产生大量的玉米 医药等领域[3]。木聚糖在玉米芯中含量非常丰富,玉米 芯、甘蔗渣、秸秆等纤维废弃物,如何有效地利用这些 芯中纤维素占32%~35%,多缩戊糖占35%~40%,其 植物原料一直是人们关注的课题。据统计,中国每年 中多聚戊糖的主要成分为木聚糖【
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