Journal
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
Volume 11, Issue 4, Pages 1969-1977Publisher
SPRINGER
DOI: 10.1007/s11694-017-9579-1
Keywords
Mango fruit quality; Rapid determination; Electronic nose; Stochastic resonance; Eigen value
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Funding
- Public Welfare Technology Application Research Project of Zhejiang Province [2017C31010]
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Mango (M. indica cv. Datainong) fruit quality rapid determination method based on electronic nose (E-nose) was investigated in this research. E-nose responses to mangoes stored at room temperature were examined for 9 days. Meanwhile, physicochemical and microbiological indexes including firmness, weight loss, surface colour, yellowing rate, pH, total soluble solids, polyphenol oxidase activity and total viable counts were measured to provide quality references for E-nose analysis. Principal component analysis (PCA) and stochastic resonance (SR) were utilized for E-nose data analysis. Results indicated that mango fruit quality decreased sharply during storage. PCA just allowed qualitative quality discrimination, while SNR spectrum using eigen values successfully characterized mango quality. Mango quality predictive model was developed by linear fitting SR eigen values. Validation experiment results demonstrated that the forecasting accuracy of the developed model reached 90%.
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