• EI
  • Scopus
  • 中国科技期刊卓越行动计划项目资助期刊
  • 北大核心期刊
  • DOAJ
  • EBSCO
  • 中国核心学术期刊RCCSE A+
  • 中国精品科技期刊
  • JST China
  • FSTA
  • 中国农林核心期刊
  • 中国科技核心期刊CSTPCD
  • CA
  • WJCI
  • 食品科学与工程领域高质量科技期刊分级目录第一方阵T1
中国精品科技期刊2020

荧光光谱法测定淀粉中的直链淀粉

尹爱萍, 高慧敏, 赵朝宇, 闫怀义

尹爱萍, 高慧敏, 赵朝宇, 闫怀义. 荧光光谱法测定淀粉中的直链淀粉[J]. 食品工业科技, 2019, 40(6): 252-255. DOI: 10.13386/j.issn1002-0306.2019.06.042
引用本文: 尹爱萍, 高慧敏, 赵朝宇, 闫怀义. 荧光光谱法测定淀粉中的直链淀粉[J]. 食品工业科技, 2019, 40(6): 252-255. DOI: 10.13386/j.issn1002-0306.2019.06.042
YIN Ai-ping, GAO Hui-min, ZHAO Chao-yu, YAN Huai-yi. Determination of Amylosein Starch by Fluorescence Spectrometry[J]. Science and Technology of Food Industry, 2019, 40(6): 252-255. DOI: 10.13386/j.issn1002-0306.2019.06.042
Citation: YIN Ai-ping, GAO Hui-min, ZHAO Chao-yu, YAN Huai-yi. Determination of Amylosein Starch by Fluorescence Spectrometry[J]. Science and Technology of Food Industry, 2019, 40(6): 252-255. DOI: 10.13386/j.issn1002-0306.2019.06.042

荧光光谱法测定淀粉中的直链淀粉

基金项目: 

山西省1331工程重点学科建设计划经费资助。

忻州师范学院重点学科项目(XK201502)

详细信息
    作者简介:

    尹爱萍(1964-)女,本科,教授,研究方向:材料化学,E-mail:aipingyin1964@163.com。

    通讯作者:

    闫怀义(1957-),男,本科,教授,主要从事变性淀粉方面的研究,E-mail:yanhuaiyi-ok@163.com。

  • 中图分类号: TS207.3

Determination of Amylosein Starch by Fluorescence Spectrometry

  • 摘要: 为了建立一种荧光光谱法测定淀粉中直链淀粉含量的方法,采用荧光光谱法测定了直链淀粉的激发光谱和发射光谱以及直链淀粉与支链淀粉的浓度比对荧光强度的影响。结果表明:直链淀粉的激发波长为370 nm、发射波长为422 nm;在0.10~0.70 μg/mL浓度范围内,直链淀粉荧光强度与其浓度呈良好线性关系,相关系数r=0.9996,检出限为0.026 μg/mL。用该方法测定玉米淀粉和土豆淀粉中直链淀粉的含量,加标回收率为94.5%~121.7%,相对标准偏差(RSD)为2.42%~3.24%。该方法不需加任何生化试剂,不受时间、温度、共存支链淀粉的影响,快速简便,绿色环保,检出限低,结果准确。
    Abstract: In order to establish method for determination of amylose contents in starch by fluorescence spectrometry. The excitation and emission spectra of amylose, and the effect of ratios of amylose to amylopectin on fluorescence intensity were determined by fluorescence spectrometry. The results showed that:The amyloseemitted fluorescence at theexcitation wavelengths of 370 nm and emission wavelengths of 422 nm. In the concentration range of 0.10~0.70 μg/mL, the fluorescence intensity of amylose presented a good linear relationship with its concentration, and the correlation coefficients was 0.9996, and the detection limit was 0.026 μg/mL. The method was applied to the determination of amylose contents in corn starchand potato with recoveries 94.6%~121.7%, and the RSD was 2.42%~3.24%. This method didn't need any biochemical reagents, and had no affected by time, temperature, coexistence of amylopectin, which was fast and simple, green and environmental friendly, low detection limit with accurate results.
计量
  • 文章访问数:  343
  • HTML全文浏览量:  57
  • PDF下载量:  35
  • 被引次数: 0
出版历程
  • 收稿日期:  2018-04-16
  • 网络出版日期:  2020-11-12
  • 刊出日期:  2019-03-14

目录

    /

    返回文章
    返回
    x 关闭 永久关闭