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Study of Sugar Transformations in Carrots During Storage Using Snow by Mid-Infrared Spectroscopy and Chemometrics

Volume 66, Number 9 (Sept. 2012) Page 1087-1090

NAOTO NAGAI,* HIDEKI OKADA, SATOSHI WATANABE, and SAYAKA SHIMOJO


The attenuated total reflection (ATR) mode in Fourier transform infrared (FT-IR) spectroscopy has been used to detect the sugar transformations of carrots under various storage conditions. The composition of the sugars was assessed by principal component analysis (PCA) and principal component regression (PCR). The changes in the sucrose concentration of the trachea and phloem of the carrot after storage are evident.



Index Headings: Carrots; Sugar; Storage under snow; Fourier transform infrared spectroscopy; FT-IR; Attenuated total reflection; ATR; Sucrose; Fructose; Principal component analysis; PCA; Chemometrics.