Analysis of Fungal Contamination Risk in Pre-packaged Dried Soybean Curd Processing Line Based on High-throughput Sequencing Technology

Lijun ZHAO; Xue TIAN; Wei ZHONG; Lirong JIA; Feixia DUAN

doi:10.13386/j.issn1002-0306.2020070037

Volume 42 Issue 9

Apr. 2021

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Science and Technology of Food Industry > 2021 > 42(9): 207-213. > DOI: 10.13386/j.issn1002-0306.2020070037

ZHAO Lijun, TIAN Xue, ZHONG Wei, et al. Analysis of Fungal Contamination Risk in Pre-packaged Dried Soybean Curd Processing Line Based on High-throughput Sequencing Technology[J]. Science and Technology of Food Industry, 2021, 42(9): 207−213. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020070037.

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Analysis of Fungal Contamination Risk in Pre-packaged Dried Soybean Curd Processing Line Based on High-throughput Sequencing Technology

1.
Food Engineering Department, College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
2.
Sichuan Huiji Food Co., Ltd., Chengdu 610083, China

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Received Date: July 05, 2020
Available Online: March 15, 2021

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Abstract

Abstract

In this study, the fungal contamination in pre-packaged dried soybean curd processing line were analyzed by high-throughput sequencing technology, in combination with culture methods. The contact surface and semi-finished products of food had obvious fungal contamination, Kodamaea, Candida, Trichosporon, Alternaria and Aspergillus were detected to be the predominant contaminating fungal. Boiling and terminal sterilization process efficiently reduce the viable microbial count in soybean curd product. Food contact surfaces showed higher community diversity and abundance than semi-finished products. Conveying tanks, the tofu-covering cloth, the alkaline denaturation tank inner wall, baking inner wall and packaging hopper inner wall were high-risk contact surfaces. Fungi were not the main cause of shelf life spoilage but might induce mycotoxin residues risk.
- dried soybean curd,
- production process,
- high-throughput sequencing,
- fungal diversity,
- security risks

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References

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