Exploring the flavor characteristics and key flavor-related metabolic pathways in sour congee of different foxtail millet varieties
文献类型： 外文期刊
作者： Liu, Junli 1 ; Yang, Donghui 2 ; Li, Pengliang 1 ; Zhao, Wei 1 ; Li, Hongmin 2 ; Liu, Jingke 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Shijiazhuang 050031, Hebei, Peoples R China
2.Hebei Univ Engn, Coll Life Sci & Food Engn, Handan 056009, Hebei, Peoples R China
3.Harbin Inst Technol, Fac Life Sci & Med, Sch Med & Hlth, Harbin 150001, Heilongjiang, Peoples R China
4.Jinhai Grain & Oil Ind Co Ltd, Qinhuangdao 066000, Hebei, Peoples R China
关键词： Sour congee; Foxtail millet cultivars; Volatile markers; Flavor formation pathway
期刊名称：JOURNAL OF CEREAL SCIENCE （ 影响因子：3.7； 五年影响因子：4.3 ）
ISSN： 0733-5210
年卷期： 2025 年 124 卷
页码：
收录情况： SCI
摘要： Sour congee is a traditional non-alcoholic fermented grain food in China; however, the flavor diversity in sour congee of different foxtail millet varieties and key flavor-related metabolic pathways have yet to be thoroughly evaluated. This study analyzed the physicochemical properties, taste components, and aroma compounds of six millet varieties used in sour congee production. Results showed that flavor differences arose from compound concentrations rather than types. Succinic and citric acids emerged as primary taste-active compounds (TAV >1), while 15 volatiles contributed aromas (OAV >1), mainly fruity, green, floral, and fatty notes. The aroma of glutinous varieties and japonica varieties can be visually distinguished by the odor ring charts. Further che-mometric analysis revealed six signature aroma compounds that distinguish the different varieties of sour congee (OAV >1 and VIP >1), including phenylacetaldehyde, (E)-2-octen-1-ol, 1-octanol, hexanoic acid, ethyl butyrate, and 3-octanone. The reconstructed key flavor-related metabolic pathways elucidated that these key flavor compounds are primarily generated from pyruvate, fatty acids, and phenylalanine metabolism. In summary, this study highlighted flavor characteristic variations and potential mechanisms underlying flavor substance for-mation. It was found that JM-fermented congee was conducive to attaining a desirable balance of flavor and antioxidant benefits
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