HUBEI AGRICULTURAL SCIENCES ›› 2021, Vol. 60 ›› Issue (12): 128-130.doi: 10.14088/j.cnki.issn0439-8114.2021.12.025

• Detection Analysis • Previous Articles     Next Articles

Nondestructive testing model for main components of potato from different places by near infrared spectroscopy

WU Yan-yong1,2, SHI Yan-cai3, LYU Xue-juan4, QIU Li-hang1,2, LUO Han-min1,2   

  1. 1. Sugarcane Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China;
    2. Key Laboratory of Sugarcane Biotechnology and Genetic Improvement,Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement,Nanning 530007,China;
    3. Guangxi institute of Botany,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin 541006,Guangxi,China;
    4. Instrumental Analysis Center of South China Agricultural University,Guangzhou 510642, China
  • Received:2021-03-17 Online:2021-06-25 Published:2021-07-19

Abstract: 36 potato(Solanum tuberosum L.) samples involved in different species and grades were collected from 6 provinces in China. Based on the values determined by chemical methods, near infrared spectroscopy (NIRS) nondestructive testing model for the water, reducing sugar and starch content were constructed by partial least squares regression method, respectively. The results showed that the determination coefficients (R2) of constructed NIR model were 0.88 for water, 0.84 for reducing sugar, and 0.92 for starch. The root mean square error of cross validation (RMSECV) was less than 1, and the ratio of the standard deviation of the verification set to the predicted standard deviation (RPD) was all more than 2.5 in each NIR model. In addition, the results of external validation further showed that the R2 for three components which was predicted by each constructed NIR model was more than 0.9, and the relative deviation between the predicted value and the measured value in every component was also very small.

Key words: potato(Solanum tuberosum L.), water, reducing sugar, starch, near infrared spectroscopy

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