Radiation decontamination of mycelium powder of sinensis by <sup>60</sup>Co γ-rays

SHI Jianjun; ZHAO Xiaojun; SUN Zhiming; CHEN Hui; SUN Guilian; LI Xiaoyun

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Radiation decontamination of mycelium powder of sinensis by ⁶⁰Co γ-rays

Environment Protection, Agriculture and Food Industry | 更新时间：2023-03-30

- Radiation decontamination of mycelium powder of sinensis by ⁶⁰Co γ-rays
- Journal of Radiation Research and Radiation Processing Vol. 23, Issue 2, Pages: 122(2005)
- 作者机构：
  
  1.浙江理工大学理学院　杭州　310018
  2.浙江大学原子核农业科学研究所　农业部核农学重点开放实验室　杭州　310029
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SHI Jianjun, ZHAO Xiaojun, SUN Zhiming, et al. Radiation decontamination of mycelium powder of sinensis by ⁶⁰Co γ-rays. [J]. Journal of Radiation Research and Radiation Processing 23(2):122(2005)
DOI：

SHI Jianjun, ZHAO Xiaojun, SUN Zhiming, et al. Radiation decontamination of mycelium powder of sinensis by ⁶⁰Co γ-rays. [J]. Journal of Radiation Research and Radiation Processing 23(2):122(2005) DOI：

摘要

应用,60,Coγ射线辐照虫草菌丝粉，研究了菌粉的灭菌效果、耐贮藏性以及对其主要化学成分的影响,[1,2],。结果显示，辐照可有效杀灭菌粉中的杂菌和霉菌，经6kGy剂量照射后4d，菌粉中的杂菌和霉菌灭活率分别达到92.6%和85.9%，且随着辐照剂量的增加菌粉中的含菌量呈同步下降。杂菌和霉菌的,D,10,值分别为5.51kGy和5.72kGy，根据部颁标准（WS3-B-2120-96），菌粉中杂菌和霉菌的含量应分别小于1000个/g和100个/g，可计算出菌粉达到卫生标准的阈值剂量为5.3kGy，考虑1.5—1.7的保险系数，认为采用8—9kGy的辐照剂量是比较适宜的。表明采用γ射线进行菌粉的辐照灭菌在技术上是可行的。

Abstract

In this paper, radiation decontamination effects of mycelium powder of sinensis with ,60,Co γ-rays and influence on its components were studied. The results showed that the irradiation was very effective in killing bacteria and moulds in mycelium powder. The ,D,10, value for bacteria and moulds were 5.51kGy and 5.72kGy respectively. The optimum dose for decontamination of mycelium powder was 8—9kGy. Irradiating the mycelium powder to 8—9kGy did not cause obvious changes in the content of fatty acid, protein, total polysaccharide, total free amino acid and major nutrient components of adenosine, mannitol, and nitrogen. The irradiated mycelium powder, lost respectively 8.4%—9.5% and 29.6%—33.3% vitamin C and E, but they are minor nutrient components. After radiation decontamination, the quality-guaranteed mycelium powder has extended shelf life.

关键词

辐照虫草菌丝粉灭菌

Keywords

IrradiationMycelium powder of sinensisSterilization

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Radiation decontamination of mycelium powder of sinensis by 60Co γ-rays

DOI：

摘要

Abstract

关键词

Keywords

references

Radiation decontamination of mycelium powder of sinensis by ⁶⁰Co γ-rays