期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 101, 期 -, 页码 382-388出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2018.11.012
关键词
Formaldehyde; Electronic nose; GC-MS; Quantitative model
资金
- Key Project of Shanghai Agriculture Prosperity through Science and Technology [2016 (4-4)]
- National Key Research and Development Program of China [2016YFD0401501]
- Project of Science and Technology Commission of Shanghai Municipality [15320502100]
- State Key Laboratory of Pathogen and Biosecurity (Academy of Military Medical Sciences) [SKLPBS1524]
- Shanghai Engineering Research Center of Aquatic-Product Processing Preservation [16DZ2280300]
The aim was to establish a rapid and quantitative detection method of formaldehyde in squid based on electronic nose for screening massive samples. Identification of volatile compounds in squid with different formaldehyde content by electronic nose were mainly depended on eight sensors. Besides, the diversities of volatile constituents in squid with increasing contents of aldehydes and aromatic compounds were validated by GC-MS results. Moreover, to build a qualitative discrimination model for estimating whether formaldehyde in squid over standard limit or not, DFA and SIMCA based on PCA were used to analyze electronic nose data for semi quantitative determination of formaldehyde content in squid. Finally, a rapid quantitative prediction model based on electronic nose and PLS was established (R-2 = 0.9266).To verify the accuracy of quantitative model, t-test was employed and no significant difference between predicted values and true values was found. This approach showed well potentiality to provide a rapid, nondestructive and quantitative method for detecting formaldehyde residue in food.
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