High-throughput near-infrared spectroscopy analysis of nutritional composition in sweet potato stem tips
文献类型： 外文期刊
作者： Tang, Chaochen 1 ; Jiang, Bingzhi 1 ; Ejaz, Irsa 3 ; Ameen, Asif 4 ; Zhang, Rong 1 ; Mo, Xueying 1 ; Li, Meng 1 ; Wang, Zhangying 1 ;
作者机构： 1.Crops Res Inst, Guangdong Acad Agr Sci, 18 Jinying West Second St, Guangzhou 510640, Peoples R China
2.Key Lab Crop Genet Improvement Guangdong Prov, Guangzhou 510640, Peoples R China
3.Univ Gottingen, Dept Crop Sci, Div Agron, D-37075 Gottingen, Germany
4.AARI, Agron Res Inst, Plant Physiol Sect, Faisalabad 38850, Pakistan
5.Hunan Agr Univ, Coll Biosci & Biotechnol, Hunan Prov Key Lab Crop Germplasm Innovat & Utiliz, Changsha 410128, Peoples R China
关键词： Germplasm evaluation; Quality components; Chemometrics algorithms; Sample partitioning; Variable selection
期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.9； 五年影响因子：4.5 ）
ISSN： 0026-265X
年卷期： 2024 年 205 卷
页码：
收录情况： SCI
摘要： Leaf-vegetable sweet potato is a nutritious food source, with stem tips as the harvest organ. However, the lack of rapid quantitative approaches for quality evaluation of stem tips largely limits the genetic improvement of leafvegetable sweet potato. This study aimed to establish a near-infrared spectroscopy (NIRS) methodology for the rapid analysis of both proximate (cellulose, crude protein, and soluble sugar) and functional (chlorogenic acid, total flavonoid content, and total phenolic content) components in the stem tips. Leveraging a dataset of 140 representative germplasm samples, we developed six robust NIRS models through the optimization of calibration sets and variable selection. These models exhibited exceptional accuracy, with high determination coefficients on calibration (R2C = 0.95-0.98), cross-validation (R2CV = 0.93-0.96), external validation (R2V = 0.91-0.95), and the ratio of prediction to deviation (RPD = 6.78-9.72). Overall, the NIRS models developed through this research facilitate high-throughput profiling of nutritional composition in stem tips, thereby enabling the swift identification of superior germplasm suited for leaf-vegetable sweet potato production.
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