中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 旋光法测定木薯中淀粉含量不确定度评定 食品科学 2016,37 (12) 144-147
Position: Home > Articles > Uncertainty Evaluation for the Determination of Starch Content in Manihot esculenta by Polarimetric Method FOOD SCIENCE 2016,37 (12) 144-147

旋光法测定木薯中淀粉含量不确定度评定

作  者：
周秀梅;雷宝良;张凤枰;刘耀敏;范秀丽
单  位：
通威股份有限公司
关键词：
旋光法;淀粉;测量不确定度评定;木薯
摘  要：
对采用旋光法测定木薯中的淀粉含量的不确定度进行评定。建立测量模型,分析确定木薯中淀粉含量的不确定度来源,并对测量过程中的不确定度分量进行逐层分析与合成,当木薯的淀粉含量为50.20 g/100 g时,得到其合成标准不确定度和扩展不确定度分别为0.16、0.32 g/100 g。结果表明,木薯总旋光度重复测定对不确定度贡献最大,总旋光度测定过程产生的不确定度也不容忽视,试样称量对总不确定度的贡献最小。实验结果可为采用该方法测定木薯中淀粉含量的质量控制提供理论依据。
译  名：
Uncertainty Evaluation for the Determination of Starch Content in Manihot esculenta by Polarimetric Method
作  者：
ZHOU Xiumei;LEI Baoliang;ZHANG Fengping;LIU Yaomin;FAN Xiuli;Key Laboratory of Aquatic, Livestock, Poultry Nutrition and Healthy Culturing, Ministry of Agriculture, Tongwei Co.Ltd.;College of Food Science and Technology, Shanghai Ocean University;
关键词：
polarimetric method;;starch;;measurement uncertainty evaluation;;Manihot esculenta
摘  要：
In this paper, the measurement uncertainty for the determination of starch content in the dried residue left after starch extraction from Manihot esculenta by polarimetric method was evaluated. Each uncertainty component during the process of measurement was modeled. The main sources of uncertainty were identified and analyzed. The impact of every uncertainty component on the measurement uncertainty was estimated. Based on quantitative analysis of every uncertainty source, the relative standard uncertainty of the measurement results was obtained. The starch content in the Manihot esculenta residue was still as high as 50.20 g/100 g, with a combined standard uncertainty of 0.16 g/100 g and an expanded uncertainty of 0.32 g/100 g. The evaluation indicated that repeated determinations of the total optical rotation of the Manihot esculenta residue made the most important contribution to the combined relative standard uncertainty. The influence of repeated determinations of the optical rotation of its alcohol-soluble fraction could not be neglected. The effect of sample weighing was minimal. This evaluation can provide a theoretical basis for the quality control of starch content determination in Manihot esculenta.

相似文章

导出引用
计量
文章访问数: 13
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46