文献类型： 外文期刊
作者： Guo, Huimin 1 ; Wang, Siyu 2 ; Liu, Chenghong 1 ; Xu, Hongwei 1 ; Bao, Yuying 2 ; Ren, Guixing 3 ; Yang, Xiushi 5 ;
作者机构： 1.Shanghai Acad Agr Sci, Biotechnol Res Inst, Shanghai Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China
2.Inner Mongolia Univ, Sch Life Sci, Hohhot 010021, Peoples R China
3.Shanxi Univ, Sch Life Sci, Taiyuan 030006, Shanxi, Peoples R China
4.Chengdu Univ, Minist Agr & Rural Affairs, Sch Food & Biol Engn, Key Lab Coarse Cereal Proc, Chengdu 610106, Peoples R China
5.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha 410205, Peoples R China
关键词： Triterpenoid; Kaempferol derivative; Bitterness; Sensory evaluation; Dose -over -threshold
期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）
ISSN： 0308-8146
年卷期： 2024 年 449 卷
页码：
收录情况： SCI
摘要： Despite its nutritional components and potential health benefits, the bitterness of quinoa seed limits its utilization in the food industry. Saponins are believed to be the main cause of the bitterness, but it is still uncertain which specific compound is responsible. This study aimed to isolate the main components contributing to the bitterness in quinoa seed by solvent extraction and various column chromatography techniques guided by sensory evaluation. Five compounds were identified by mass spectrometry and nuclear magnetic resonance analyses, with the dose -over -threshold factors from 29.03 to 198.89. The results confirmed that triterpenoids are responsible for the bitter taste in quinoa seed, with phytolaccagenic acid derivatives being the primary contributor. Additionally, kaempferol 3-O-(2 '' , 6 '' -di-O- alpha-rhamnopyranosyl)- beta-galactopyranoside (namely mauritianin), was demonstrated for the first time to be associated with the bitterness of quinoa. This study could provide new insight into the bitter compound identification in quinoa.
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