邱爽,陈浩,范云涛,韩清华,殷丽君.高压均质后小麦淀粉损伤程度和电物性关联研究[J].农业机械学报,2013,44(Supp2):172-176.
Qiu Shuang,Chen Hao,Fan Yuntao,Han Qinghua,Yin Lijun.Correlation of Damage Degree and Electrical Conductivity for Homogenized Wheat Starch[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp2):172-176.
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高压均质后小麦淀粉损伤程度和电物性关联研究   [下载全文]
Correlation of Damage Degree and Electrical Conductivity for Homogenized Wheat Starch   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.S2.032
中文关键词:  小麦淀粉 损伤淀粉 电导率 高压均质
基金项目:国家自然科学基金资助项目(31371719、31171692)和教育部新世纪优秀人才支持计划资助项目(NCET-09-0741)
作者单位
邱爽 中国农业大学食品科学与营养工程学院 
陈浩 中国农业大学食品科学与营养工程学院 
范云涛 中国农业机械化科学研究院 
韩清华 中国农业机械化科学研究院 
殷丽君 中国农业大学食品科学与营养工程学院 
中文摘要:利用高压均质机将软质小麦淀粉悬浊液(质量分数5%)在20~60 MPa压强下均质。均质后淀粉分别进行了显微镜图、粒径分布、DSC测量、损伤淀粉测定和通电加热实验。结果表明,小麦淀粉高压均质后糊化性质变化不大(60 MPa均质后糊化度为1.80%),一部分淀粉颗粒的显微镜图呈现胶体化结构,损伤淀粉的含量从6.56%升高到7.96%。通电加热过程中淀粉-KCl悬液电导率随温度升高线性增加。不同压强处理的淀粉电导率-温度曲线斜率与损伤淀粉含量之间有良好的线性相关性。
Qiu Shuang  Chen Hao  Fan Yuntao  Han Qinghua  Yin Lijun
College of Food Science and Nutritional Engineering, China Agricultural University;College of Food Science and Nutritional Engineering, China Agricultural University;Chinese Academy of Agricultural Mechanization Sciences;Chinese Academy of Agricultural Mechanization Sciences;College of Food Science and Nutritional Engineering, China Agricultural University
Key Words:Wheat starch Damaged starch Electrical conductivity Homogenization
Abstract:The starch damaging, gelatinization properties and electrical conductivity were investigated during ohmic heating for soft wheat starch suspension (5%) after a homogenization treatment at a series of pressures ranging from 20 to 60 MPa. DSC analysis indicated that gelatinization properties varied insignificantly (gelatinization degree was 1.80% at 60 MPa), and microscopy showed that most treated starch granules stayed originally. As a result, the amount of damaged starch of homogenized starch suspensions ascended from 6.56% to 7.96%. The electrical conductivity of native starch suspension increased linearly during ohmic heating. Slopes of electrical conductivity temperature curve of homogenized starch suspensions during ohmic heating highly correlated to the amount of damaged starches in the suspensions.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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