滚筒式催化红外联合保温处理对返潮干香菇杀菌效果及品质的影响
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(1. 江苏大学食品与生物工程学院,江苏 镇江 212013;2. 江苏大学食品物理加工研究院,江苏 镇江 212013;3. 美国加州大学戴维斯分校生物与农业工程系,美国 加州 95616;4. 镇江美博红外科技有限公司,江苏 镇江 212013)

作者简介:

李婷,女,江苏大学在读硕士研究生。

通讯作者:

马海乐(1963—),男,江苏大学教授,博士。E-mail: mhl@ujs.edu.cn

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国家重点研发计划政府间国际科技创新合作重点专项(编号:2017YFE0105300)


Effect of combined drum catalytic infrared with holding treatment for disinfection and quality of rewetting-dried shiitake mushrooms
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(1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. Institute of Food Physical Processing, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3. Department of Biological and Agricultural Engineering, University of California, Davis, California 95616, USA; 4. Maybo Innovation Co., Ltd., Zhenjiang, Jiangsu 212013, China)

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    摘要:

    目的:提高返潮干香菇食用安全性。方法:采用滚筒式催化红外设备对黑曲霉含量超标的返潮干香菇进行红外联合保温热处理杀菌试验,考察工艺参数对杀菌效果、干燥效果及品质的影响,并对杀菌过程进行动力学分析。结果:60~80 ℃下红外处理8.7~21.2 min,后续保温20~80 min,初始水分含量为16.0%~21.4%的返潮干香菇均可达到霉菌总数小于2 lg(CFU/g)的食品卫生标准。Log-Linear+Tail模型能很好地拟合保温热处理对黑曲霉的杀菌动力学特征(R2>0.98)。杀菌同时可除去2.2%~6.0%的水分,实现同步干燥。综合杀菌时间和香菇品质,最适杀菌条件为滚筒催化红外70 ℃处理10.8~15.2 min(进料速度38~50 kg/h),后续70 ℃保温30~60 min。结论:采用滚筒催化红外联合保温热处理对返潮干香菇杀菌具有一定的可行性。

    Abstract:

    Objective: The aim of this work is to improve the food safety of rewetting-dried shiitake mushrooms. Methods: The drum catalytic infrared device was used to carry out the infrared combined holding treatment disinfection test on rewetting-dried shiitake mushrooms with excessive Aspergillus niger (A. niger), and the effect of process parameters on disinfection effectiveness, drying effectiveness and quality of mushrooms were investigated. Moreover, the kinetics of the microbial inactivation process was analyzed. Results: The results showed that after disinfected with DCIR at 60~80 ℃ for 8.7~21.2 min,followed by holding for 20~80 min, the total number of moulds on mushrooms with IMCs of 16.0%~21.4% was less than 2 lg(CFU/g), which could meet the national food hygiene standard. The Log-Linear plus Tail model fitted well the inactivation regularity of A. niger during the holding process (R2>0.98). Meanuhile, moisture (w.b.) of 2.2%~6.0% was removed from the mushrooms to achieve simultaneous drying. Considering the disinfection time and product quality indicators, it was recommended that mushrooms treated with DCIR for 10.8~15.2 min to 70 ℃ (the feed rate of DCIR was 38~50 kg/h), followed by holding at 70 ℃ for 30~60 min as the most suitable disinfecting process condition. Under the control of this process condition, the high-quality product was obtained. Conclusion: Drum catalytic infrared radiation combined with holding treatment was a promising disinfection technology during rewetting-dried shiitake mushrooms disinfecting.

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李婷,曲文娟,吴本刚,等.滚筒式催化红外联合保温处理对返潮干香菇杀菌效果及品质的影响[J].食品与机械,2021,37(7):120-128.
LITing, QUWenjuan, WUBengang, et al. Effect of combined drum catalytic infrared with holding treatment for disinfection and quality of rewetting-dried shiitake mushrooms[J]. Food & Machinery,2021,37(7):120-128.

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  • 收稿日期:2021-03-06
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  • 在线发布日期: 2023-02-15
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