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食品研究与开发:2017,38(9):1-4
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芭蕉芋淀粉热力学特性和体外消化性的研究
付婧超1,2,李晓磊1,*,王玉娟1,2,李丹1
(1. 长春大学 吉林省教育厅农产品深加工重点实验室,吉林 长春 130022;2. 长春大学 食品科学与工程 学院,吉林 长春 130022)
Study on Thermodynamic Properties and in vitro Digestion of Canna Starch
Key Laboratory of Agroproducts Processing Technology at Jilin Provincial University, Education Department of Jilin Provincial Government, Changchun University, Changchun 130022, Jilin, China; 2. College of Food Science and Technology, Changchun University, Changchun 130022, Jilin, China
(School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, Guangdong, China)
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投稿时间:2016-08-11    
中文摘要: 为了研究芭蕉芋淀粉的加工与营养特性,采用差示扫描量热仪(DSC)、Brabender 糊化仪(BV)和 Brookfield R/S Plus 流变仪测定了芭蕉芋淀粉的热力学特性;在此基础上,采用普鲁兰酶水解,进一步研究了酶解淀粉的体外消化特 性。结果表明:5 g 芭蕉芋淀粉溶于 100 mL 蒸馏水得到淀粉乳,其糊化温度是 65 ℃~67 ℃,黏度急剧升高时的温度为75 ℃,峰值黏度为 429.3 BU。经 100 U/g 普鲁兰酶水解后的淀粉,快速消化淀粉的含量由 88.2 %减少到 59.0 %,缓慢消化 淀粉的含量由 8.5 %增加到 16.9 %; 酶解淀粉直链淀粉的含量由 12.8 %增加到 18.1 %、 支链淀粉含量由 86.8 %下降到79.9 %,可能是其具有较低的消化率的部分原因。
中文关键词: 芭蕉芋淀粉  糊化温度  体外消化
Abstract:In order to investigate the properties of processing and nutrition of canna starch, instrumental analy- sis by Differential Scanning Calorimetry (DSC), Brabender Micro Visco-Amylo-Graph (BV) and Brookfield R/S Plus rheometer, and pullulanase hydrolysis were performed in this study. The results showed that 5 g canna starch was dissolved in 100 mL distilled water to obtain starch milk, and the gelatinization temperature of canna starch was 65 ℃-67 ℃. The viscosity increased greatly at 75 ℃. The max/mum viscosity of starch slurry was 429.3 BU. After the starch was hydrolyzed by pullulanase at 100 U/g starch, the content of RDS decreases from 88.2 % to 59.0 %, the content of SDS increased from 8.5 % to 16.9 %. The enzymatic modified canna starch with low digestibility might be resulted from the changes of the content of amylose from 12.8 % to 18.1 % and amylopectin from 86.8 % to 79.9 %.
文章编号:201709001     中图分类号:    文献标志码:A
基金项目:国家自然科学基金面上项目(NSFC-31671801);吉林省教 育厅“十三五”科学技术研究项目(吉教科合字[2016]第 298 号);吉林 省教育厅“十三五”科学技术项目(JJKH20170502KJ)
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