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A quantitative equation for umami evaluation of food and condiments based on the Weber-Fechner law

文献类型： 外文期刊

作者： Wang, Yijian 1 ; Wan, Shiwen 2 ; Pan, Sheng 1 ; Luan, Peng 1 ; Cen, Xiaoxu 1 ; Sun, Guangquan 1 ; Feng, Yaoze 1 ; Zhu, Ming 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Engn, 1 Shizishan St, Wuhan, Hubei, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Agr Equipment Midlower Yangtze River, Wuhan 430070, Peoples R China

3.Huazhong Agr Univ, Shenzhen Inst Nutr & Hlth, Shenzhen 518000, Peoples R China

4.Chinese Acad Agr Sci, Minist Agr, Agr Genom Inst Shenzhen, Shenzhen Branch,Genome Anal Lab,Guangdong Lab Ling, Shenzhen 518120, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Aquaculture Facil Engn, Wuhan 430070, Peoples R China

6.Huazhong Agr Univ, Coll Informat, Wuhan 430070, Peoples R China

关键词： Umami; Sensory evaluation; Sensory umami difference strength curve; Weber-Fechner Law

期刊名称：FOOD QUALITY AND PREFERENCE （ 影响因子：4.9； 五年影响因子：5.5 ）

ISSN： 0950-3293

年卷期： 2025 年 123 卷

页码：

收录情况： SCI

摘要： Here, a quantitative equation for Overall Umami Strength (OUS) in foods and condiments, based on sensory evaluation, was defined using the Weber-Fechner law. Sensory evaluation was conducted utilizing objective questions grounded in triangulation tests and paired comparisons to accurately determine the absolute and difference thresholds for monosodium glutamate (MSG). These thresholds were employed to define various levels of umami strength, which facilitated the creation of an umami sensory difference strength curve. Subsequently, the OUS equation was constructed through a well-fitting function, represented as " OUS = 9.6828 x log10(CMSG) 10 ( C MSG ) + 34.8" (R2 R 2 = 0.996). Once the relative MSG concentration of the sample is determined, it can be converted into the OUS value under the thresholds scale mentioned above for quantification. To validate this quantitative equation, multiple samples, including fish, mushrooms, and soy sauce, were evaluated using the paired comparison test to obtain relative MSG concentration. The OUS value calculated by relative MSG concentration was compared with the existing method to verify its correctness and effectiveness. The results demonstrate that both foods and condiments, even from different species origins, can be reliably quantified for overall umami intensity using the proposed sensory quantitative equation.

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