Rapid Detection Method of Flavonoid Content in Peanut Seed Based on Near Infrared Technology
LI Zhen, HOU Ming-yu, CUI Shun-li, CHEN Miao, LIU Ying-ru, LI Xiu-kun, CHEN Huan-ying, LIU Li-feng*
State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Germplasm Resources Research and Utilization in North China, Ministry of Education, Hebei Province Crop Germplasm Resources Laboratory, Agricultural College of Hebei Agricultural University, Baoding 071001, China
Abstract：Flavonoid is an important index affecting the nutritional value of peanut seed. The spectrophotometry and chromatography to detect flavonoid content are time-consuming and labor-intensive, so they are not suitable for mass detection in breeding process, and constructing its near-infrared measurement model can provide an important technical guarantee for rapid detection of flavonoid content in peanut seed. This study used 290 peanut germplasms with different flavonoid content to construct the model. The flavonoid content determined by the Al3+ chromogenic method was between 46.96 and 140.18 mg RT（RT: rutin）·(100 g)-1. The near-infrared spectrum of peanut seed was scanned and collected by Perten DA7250 near-infrared analyzer (950～1 650 nm). The partial least squares regression (PLSR) in the full wavelength spectrum range was used to compare the single and compound pretreatment methods, and the correlation coefficients and errors of different models were compared to predict the best model. The best spectral pretreatment method to determine the NIR calibration model of flavonoid content was “Savitzky-Golay derivative+baseline+de-trending”. The correlation coefficient (Rc) of calibration set was 0.884, and the root mean square error (RMSEC) of correction was 4.998. 50 peanut samples verified the model. The predicted correlation coefficient Rp was 0.904, while the predicted RMSEP was 1.122. The near-infrared spectroscopy model constructed in this study can be used to determine the content of flavonoids in peanut seeds non-destructively and efficiently. It could be effectively used to breed peanut varieties with high flavonoid content and can help construct near-infrared spectroscopy models of substances with low content (μg·g-1).
李 振，侯名语，崔顺立，陈 淼，刘盈茹，李秀坤，陈焕英，刘立峰. 花生籽仁黄酮含量近红外分析检测方法[J]. 光谱学与光谱分析, 2024, 44(04): 1112-1116.
LI Zhen, HOU Ming-yu, CUI Shun-li, CHEN Miao, LIU Ying-ru, LI Xiu-kun, CHEN Huan-ying, LIU Li-feng. Rapid Detection Method of Flavonoid Content in Peanut Seed Based on Near Infrared Technology. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(04): 1112-1116.
