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Updated: Jun 29, 2026

Fruit Volatile Analysis Using an Electronic Nose
Published on: March 30, 2012
Flavor and quality evolution during storage of fermented noni juice: Integrated insights from E--sensory evaluation,
Qiongping Hong1, Shanshan Zheng1, Jiamu Kang2
1School of Food Science and Engineering, Hainan University, Haikou 570228, China.
Abstract:
Noni is valued for its diverse bioactive ingredients, but the quality and flavor evolution of fermented noni juice (FJ) during storage remain unclear. This study investigated the mechanisms underlying quality and flavor evolution in FJ fermented with Acetobacter sp. AN02 using electronic sensory evaluation, volatilomics, and metabolomics. The browning index increased significantly during storage, whereas the pH of FJ remained relatively stable. Decreases in reducing sugars and total amino acids further indicated the progression of nonenzymatic browning. E-sensory analysis revealed increased sourness and higher overall flavor intensity. Volatile acids were the predominant flavor compounds, and the contents of neral and limonene increased markedly, strengthening the citrus and floral-fruity aroma of FJ. Untargeted metabolomics revealed that storage-induced changes primarily involved aromatic amino acid and plant secondary metabolism-related pathways, underscoring non-volatile precursor remodeling as a key driver of flavor evolution. These findings provide support for storage quality control and shelf-life evaluation of FJ.
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