In order to efficiently, quickly and non-destructively detect royal jelly under different storage conditions, a qualitative analysis method was studied based on support vector machine (SVM), orthogonal partial least squares discriminant analysis (OPLS-DA) and mid-infrared spectroscopy. Royal jelly stored at 4 ℃ and at room temperature (25 ℃) for 7, 14, 21 d were tested. The spectra of the samples were collected by mid-infrared spectroscopy, followed by establishing qualitative analysis models for two-class (freezing and room temperature) and three-class (stored at room temperature for 7, 14, 21 d). The results showed that the predictive accuracy of the two-class and three-class models based on SVM were 92.31% and 100%, respectively. Moreover, the predictive accuracy of the two-class and three class models based on OPLS-DA were 95.52% and 96.97%, respectively. Therefore, mid-infrared spectroscopy combined with SVM and OPLS-DA algorithm can effectively identify frozen and room temperature stored royal jelly, which provides a possibility for rapid and non-destructive identification of royal jelly quality.
CHEN Fan
,
LIU Cuiling
,
CHEN Lanzhen
,
SUN Xiaorong
,
LI Yi
,
JIN Yue
. Identifying royal jelly under different storage conditions based on mid-infrared spectroscopy[J]. Food and Fermentation Industries, 2019
, 45(15)
: 251
-255
.
DOI: 10.13995/j.cnki.11-1802/ts.020005
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