Related Experiment Video
Updated: Jan 21, 2026

Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis
Published on: September 16, 2014
Metal element drivers of rice sensory variation revealed by ICP-MS and electronic tongue predictive modeling
Guofeng Tan1, Chenchen Liu2, Yan Tong1
1School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, China.
Abstract:
Metal accumulation in rice grains influenced both nutritional composition and consumer-perceived eating quality. Concentrations of 26 metal elements were quantified in 36 rice samples by ICP-MS, and hierarchical cluster analysis grouped the samples into three categories. ANOVA revealed significant differences in essential elements (Ca, Mg, Zn, Cu) and non-essential or potentially toxic elements (Al, Ba, B), highlighting their contribution to classification. Sensory evaluation of representative samples demonstrated pronounced variation in odor, taste, palatability, and overall eating quality. Pearson correlation and PLSR-VIP analyses identified Ag, Al, B, Ba, Co, and V as strongly and negatively associated with sensory traits, whereas Ca and Fe exerted attribute-specific effects. Electronic tongue analysis with PCA achieved clear group separation, and a SVM model reached 93% overall accuracy. These results established a close linkage between elemental profiles and sensory performance, providing a framework for rapid, objective, and non-destructive rice quality assessment.
Related Concept Videos
Periodic Classification of the Elements
Alkali Metals
Table 1: Properties of the alkali metals
Classification of Elements and Compounds
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
Electron Orbital Model
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
Elements and Compounds
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
Properties of Transition Metals

