4.5 Article

Physico-chemical characteristics and aflatoxins production of Atractylodis Rhizoma to different storage temperatures and humidities

期刊

AMB EXPRESS
卷 11, 期 1, 页码 -

出版社

SPRINGER
DOI: 10.1186/s13568-021-01316-3

关键词

Atractylodis rhizoma; Aflatoxin; Storage; Physico-chemical characteristics; Central composite design-response surface methodology

资金

  1. Beijing Natural Science Foundation [7192130]
  2. National Natural Science Foundation of China [81973474, 81673593]

向作者/读者索取更多资源

This study investigated the characteristics, moisture contents, chemical fingerprints changes, and aflatoxins accumulation of Atractylodis rhizoma during storage, aiming to determine the optimum temperature and relative humidity conditions. The results identified the susceptible conditions for aflatoxins production and proposed suitable storage conditions for A. rhizoma, providing technical and data support for the scientific preservation of other food or herbs.
This study aimed to investigate the characteristics, moisture contents, chemical fingerprints changes and aflatoxins accumulation of Atractylodis rhizoma during storage, further to determine the optimum temperature and relative humidity conditions. Based on the suitable temperature (20-40 degrees C) and relative humidity (80-95%), 13 different temperature and humidity conditions were set up by the central composite design-response surface methodology (CCD-RSM) for Aspergillus flavus. After inoculation with Aspergillus flavus by artificial infection, A. rhizoma samples were stored under normal conditions and 13 different temperature and relative humidity levels. By taking the changes of characteristics, the contents of moisture, chemical fingerprints and aflatoxins as the evaluation indexes for A. rhizoma with or without Aspergillus flavus fungi to optimize the optimal storage conditions. After storage for 10 days, the color of A. rhizoma was deepened, the water content and chemical composition increased, and some unknown components were detected. The susceptible condition for aflatoxins production in A. rhizoma was identified at temperature 22-37 degrees C and relative humidity over 87.5%. Thus, the suitable storage conditions for A. rhizoma should be controlled at temperature below 20 degrees C and relative humidity less than 85%. This paper screened out the optimum temperature and humidity for the storage of A. rhizoma. Then, the storage specification for A. rhizoma was proposed, lying technical and data support for the scientific preservation of other food or herbs.

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