Spectroscopy and Spectral Analysis, Volume. 36, Issue 3, 697(2016)

Research on Resistant Starch Content of Rice Grain Based on NIR Spectroscopy Model

LUO Xi1,2,3,4, WU Fang-xi1,2,3,4, XIE Hong-guang1,2,3,4, ZHU Yong-sheng1,2,3,4, ZHANG Jian-fu1,2,3,4, and XIE Hua-an1,2,3,4
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
  • show less

    A new method based on near-infrared reflectance spectroscopy (NIRS) analysis was explored to determine the content of rice-resistant starch instead of common chemical method which took long time was high-cost. First of all, we collected 62 spectral data which have big differences in terms of resistant starch content of rice, and then the spectral data and detected chemical values are imported chemometrics software. After that a near-infrared spectroscopy calibration model for rice-resistant starch content was constructed with partial least squares (PLS) method. Results are as follows: In respect of internal cross validation, the coefficient of determination (R2) of untreated, pretreatment with MSC+1thD,pretreatment with 1thD+SNV were 0.920 2,0.967 0 and 0.976 7 respectively. Root mean square error of prediction(RMSEP)were 1.533 7,1.011 2 and 0.837 1 respectively. In respect of external validation, the coefficient of determination (R2) of untreated, pretreatment with MSC+1thD, pretreatment with 1thD+SNV were 0.805, 0.976 and 0.992 respectively. The average absolute error was 1.456, 0.818, 0.515 respectively. There was no significant difference between chemical and predicted values (Turkey multiple comparison), so we think near infrared spectrum analysis is more feasible than chemical measurement. Among the different pretreatment, the first derivation and standard normal variate (1thD+SNV) have higher coefficient of determination (R2) and lower error value whether in internal validation and external validation. In other words, the calibration model has higher precision and less error by pretreatment with 1thD+SNV.

    Tools

    Get Citation

    Copy Citation Text

    LUO Xi, WU Fang-xi, XIE Hong-guang, ZHU Yong-sheng, ZHANG Jian-fu, XIE Hua-an. Research on Resistant Starch Content of Rice Grain Based on NIR Spectroscopy Model[J]. Spectroscopy and Spectral Analysis, 2016, 36(3): 697

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Received: Dec. 12, 2014

    Accepted: --

    Published Online: Dec. 9, 2016

    The Author Email:

    DOI:10.3964/j.issn.1000-0593(2016)03-0697-05

    Topics