贮藏温度对广西旱藕采后重要品质的影响  

Effects of storage temperature on important postharvest quality of Canna edulis in Guangxi

作　　者：黄秋伟[1] 毛立彦[1] 檀小辉[1] 王丽萍[1] 刘功德[1] 彭继飞 龙凌云[1] HUANG Qiuwei;MAO Liyan;TAN Xiaohui;WANG Liping;LIU Gongde;PENG Jifei;LONG Lingyun(Guangxi Subtropical Crops Research Institute,Nanning 530001,China;Guangxi Tian'e County Shangala Industrial Limited Company,Hechi 547300,Guangxi,China)

机构地区：[1]广西壮族自治区亚热带作物研究所,广西南宁530001 [2]广西天峨县山旮旯实业有限公司,广西河池547300

出　　处：《浙江农业学报》2023年第2期346-354,共9页Acta Agriculturae Zhejiangensis

基　　金：广西农业科学院基本科研业务专项(桂科农2021YT143);中央引导地方科技发展专项资金(桂科ZY20111007)。

摘　　要：贮藏温度的变化会影响旱藕块茎品质的变化。为探究不同贮藏温度下旱藕块茎重要品质的变化规律,以广西天峨旱藕为试验材料,分析旱藕块茎在3个温度处理(低温6℃、常温25℃和高温35℃)下的营养品质指标变化。结果表明:贮藏0~9 d,3个温度处理的旱藕块茎含水量均显著降低,可溶性糖和还原糖含量均显著上升;贮藏9~15 d,低温和常温处理的旱藕含水量上升,可溶性糖和还原糖含量显著下降;贮藏15 d内,低温处理的旱藕可溶性蛋白含量总体随贮藏时间延长呈下降趋势,常温和高温处理样品可溶性蛋白含量呈无规律性变化;贮藏0~3 d,3个温度处理的旱藕总黄酮含量显著上升,淀粉含量显著下降,此后随贮藏时间延长低温处理样品的总黄酮含量呈显著下降趋势,但淀粉含量变化无规律性;贮藏0~12 d,低温处理的旱藕块茎淀粉得率显著上升,此后缓慢下降,但得率值仍高于未处理前样品。结合主成分和相关性分析结果,低温处理后的旱藕块茎更适合用于淀粉提取。研究结果可为广西旱藕贮藏、淀粉提取制备标准制定和企业加工工艺优化提供参考依据。Temperature changes during storage will affect the quality of Canna edulis tubers.In order to explore the change rule of important quality of Canna edulis tubers under different storage temperature conditions,Canna edulis in Tian e County,Guangxi Province were used as test material,and changes of nutritional quality indexes under three temperature treatments(low temperature 6℃,normal temperature 25℃and high temperature 35℃)were analyzed.The results showed that water content of tubers of the three temperature treatments showed a significant decrease,and contents of soluble sugar and reducing sugar showed a significant increase when during the storage period of 0-9 d;when the storage period was 9-15 d,water content of the C.edulis treated at low temperature and normal temperature increased slightly,and contents of soluble sugar and reducing sugar decreased significantly.During the 15 d storage period,soluble protein content of C.edulis tubers treated at low temperature showed a downward trend with the change of storage time.Soluble protein content of the treated samples changed irregularly;when the storage period was 0-3 d,total flavonoid content of the C.edulis tuber treated at the three temperatures increased significantly,and the starch content decreased significantly.There was a significant downward trend,but the changes of starch content were irregular;during the storage period of 0-12 d,starch extraction rate of C.edulis tuber treated at low temperature increased significantly and then decreased slightly.The results of principal component analysis and correlation analysis showed that the tubers of C.edulis tuber treated at low temperature were more suitable for starch extraction.This study provided a reference for the formulation of standards for the storage,starch extraction and preparation of C.edulis tuber in Guangxi and the optimization of the processing technology of C.edulis tuber in factories.

关 键 词：贮藏温度 广西 旱藕 品质 淀粉 

分 类 号：S645.1[农业科学—蔬菜学]