Effects of irradiation methods on quality and shelf life of Choerospondias axillaris pastilles

Authors

MAO Qingxiu, Hunan Province Grain and Oil Product Quality Monitoring Center, Changsha, Hunan 410008, China
XU Yuanfang, Hunan Institute of Nuclear Agricultural Science and Space Breeding, Changsha, Hunan 410125, China;Hunan Province Engineering Technology Research Center of Agricultural Biological Irradiation, Changsha, Hunan 410125, China;Hunan Province Biological Irradiation Techonology Engineering Research Center, Changsha, Hunan 410125, China
CHEN Quling, Hunan Province Grain and Oil Product Quality Monitoring Center, Changsha, Hunan 410008, China
ZHANG Qiling, Hunan Institute of Nuclear Agricultural Science and Space Breeding, Changsha, Hunan 410125, China;Hunan Province Engineering Technology Research Center of Agricultural Biological Irradiation, Changsha, Hunan 410125, China;Hunan Province Biological Irradiation Techonology Engineering Research Center, Changsha, Hunan 410125, China
LI Wenge, Hunan Institute of Nuclear Agricultural Science and Space Breeding, Changsha, Hunan 410125, China;Hunan Province Engineering Technology Research Center of Agricultural Biological Irradiation, Changsha, Hunan 410125, China;Hunan Province Biological Irradiation Techonology Engineering Research Center, Changsha, Hunan 410125, China
YANG Yi, Hunan Institute of Nuclear Agricultural Science and Space Breeding, Changsha, Hunan 410125, China;Hunan Province Engineering Technology Research Center of Agricultural Biological Irradiation, Changsha, Hunan 410125, China;Hunan Province Biological Irradiation Techonology Engineering Research Center, Changsha, Hunan 410125, ChinaFollow

Corresponding Author(s)

杨毅（1981—），男，湖南省核农学与航天育种研究所助理研究员，硕士。E-mail: 49234403@qq.com

Abstract

Objective: This study aimed to explore the best irradiation method and irradiation dose to treat Choerospondias axillaris pastilles. Methods: C. axillaris pastilles were irradiated with 0～10 kGy gradient dose of ⁶⁰Co-γ ray and electron beam respectively, the changes of the indexes including microbial load, protein, fat, total sugar, L(+)-ascorbic acid, organic acids, pH value, sensory quality, and the shelf life quality stored in 0～360 days at room temperature were studied. Results: ⁶⁰Co-γ ray and electron beam irradiation both had bactericidal effects on C. axillaris pastilles, all microbial limit indexes including aerobic bacterial count, coliform bacteria, mold, and the pathogenic bacteria limit indexes including salmonella and staphylococcus aureus were not detected in the samples with the irradiation dose of 4 kGy. The contents of protein, fat, total sugar, organic acids (mainly citric acid), pH, and sensory quality in C. axillaris pastilles were not significantly affected by ⁶⁰Co-γ ray and electron beam irradiation of less than 10 kGy. However, the content of L(+)-ascorbic acid was significantly decreased compared with the control group after irradiation (P＜0.05), it was negatively correlated with irradiation dose, and ⁶⁰Co-γ ray irradiation had a greater impact than that of electron beam irradiation. The C. axillaris pastilles batch products were irradiated with ⁶⁰Co-γ ray and electron beam of 4～10 kGy, the products were stored for 0～360 days at room temperature, and the microbial limit indexes including aerobic bacterial count, coliform bacteria, mold in the products were less than 10 CFU/g. There were no significant changes in the smell, taste, and tissue state of C. axillaris pastilles, but with the extension of storage time, its color deepened due to browning, but it was still acceptable within 270 days of storage. Conclusion: ⁶⁰Co-γ ray and electron beam irradiation both are effective methods for sterilization and storage of C. axillaris pastilles, and the recommended irradiation dose is 4～10 kGy.

Publication Date

3-27-2024

First Page

109

Last Page

116,138

DOI

10.13652/j.spjx.1003.5788.2023.60174

Recommended Citation

Qingxiu, MAO; Yuanfang, XU; Quling, CHEN; Qiling, ZHANG; Wenge, LI; and Yi, YANG (2024) "Effects of irradiation methods on quality and shelf life of Choerospondias axillaris pastilles," Food and Machinery: Vol. 40: Iss. 2, Article 17.
DOI: 10.13652/j.spjx.1003.5788.2023.60174
Available at: https://www.ifoodmm.cn/journal/vol40/iss2/17

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