Real‐time mildew detection and gradation in simulated containerized soybeans: Insights from GC‐IMS analysis of mVOCs and VOCs

Author:

Song Xuejian123ORCID,Qian Lili123,Fu Lixue1ORCID,Cao Rongan123,Wang Xinhui1ORCID,Chen Mingming1ORCID

Affiliation:

1. College of Food Science Heilongjiang Bayi Agricultural University Daqing China

2. Key Laboratory of Agro‐Products Processing and Quality Safety of Heilongjiang Province Daqing China

3. National Coarse Cereals Engineering Research Center Daqing China

Abstract

AbstractIn the context of bulk grain container transportation, the complex logistics can lead to grain mildew and subsequent economic losses. Therefore, there is a pressing need to explore swift and real‐time mildew detection technology. Our investigation, simulating actual transportation conditions, revealed that Aspergillus, Penicillium, and Rhizopus were the primary molds responsible for soybean mildew during container transportation. Utilizing gas chromatography‐ion migration spectroscopy (GC‐IMS), we analyzed the correlation between the mVOCs (microbial volatile organic compounds) produced by dominant mold and the VOCs emitted during soybean mildew. Principal Component Analysis (PCA) and clustering results demonstrated the distinctive identification of VOCs in soybeans with varying degrees of mildew. The mildew degree significantly influenced the content variation of VOCs. As the mildew degree increased, the concentrations of nonanal, octanal, etc. progressively decreased, contrasting with the rising levels of phenylacetaldehyde, 3‐methyl‐2‐butenal, etc. Therefore, the combination of GC‐IMS with chemometrics proves to be a viable method for identifying the mildew degree of soybeans. Therefore, this study underscores the importance of implementing effective mildew detection techniques in the challenging context of bulk grain container transportation.

Funder

National Key Research and Development Program of China

Publisher

Wiley

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