Qualitative and quantitative analysis of characteristic sugars in three colored quinoas based on untargeted and targeted metabolomics
文献类型： 外文期刊
作者： Song, Jianxin 1 ; Peng, Jian 2 ;
作者机构： 1.Shenyang Pharmaceut Univ, Sch Funct Food & Wine, Shenyang 110016, Peoples R China
2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr & Rural Affairs, Guangzhou 510610, Peoples R China
关键词： Quinoa; Sugars; GC -MS; Metabolomics; PCA
期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.3； 五年影响因子：4.6 ）
ISSN： 0889-1575
年卷期： 2024 年 126 卷
页码：
收录情况： SCI
摘要： Quinoa is considered as health-promoting food for its high nutritional value. However, little references are focus on the characteristic sugars in quinoa. In this study, characteristic sugars in three colored quinoas (WQ, white quinoa; RQ, red quinoa; BQ, black quinoa) were analyzed based on metabolomics. Results showed a total of 33 sugars including monosaccharaides (21), disaccharides (9) and trisaccharides (3) were identified, and 25 sugars were reported in quinoas for the first time. D-talose (9.49 mg/kg in BQ similar to 45.98 mg/kg in RQ), levoglucosan (17.85 mg/kg in WQ similar to 27.68 mg/kg in RQ), 6-deoxy-D-glucose (8.92 mg/kg in RQ similar to 11.86 mg/kg in BQ) and gentiobiose (8.70 mg/kg in BQ similar to 15.82 mg/kg in RQ) were common in quinoas, and they presented significantly (p < 0.05) different contents among three colored quinoas. Ribose, mannose, lyxose, fructose, xylose, 1-kestose and melibiose respectively showed the highest content in RQ. WQ could be characterized by raffinose, trehalose, maltotriose, galactose, sorbose and D-arabitol. Moreover, sugar profiles and characteristic sugars in different quinoa samples could be well distinguished by principal component analysis (PCA). In conclusion, metabolomics was excellent in the sugar analysis of quinoas which made great contribution to understand the overall nutritional quality of quinoas.
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