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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (6): 513-521.doi: 10.3969/j.issn.1001-1803.2021.06.007

• Development and application • Previous Articles     Next Articles

Applicability study of amplified ATP bioluminescence assay in microbial detection of cosmetics

LI Ting1(),SHEN Ying2,CAI Jun-song3,LIU Yi-ru1,CHEN Yi-wen4,LIU Ji5,YAO Su1()   

  1. 1. China National Research Institute of Food & Fermentation Industries Co., Ltd., Beijing 100015, China
    2. Unilever (China) Limited, Shanghai 200335, China
    3. Procter & Gamble International Operations, Singapore 138547, Singapore
    4. National Institutes for Food and Drug Control, Beijing 100050, China
    5. Charles River Microbial Solutions (Shanghai) Company Limited, Shanghai 201708, China
  • Received:2020-08-11 Revised:2021-05-21 Online:2021-06-22 Published:2021-06-22
  • Contact: Su YAO E-mail:liting@china-cicc.org;yaosu@china-cicc.org

Abstract:

34 commercial cosmetics from 17 brands, covering ordinary cosmetics and special cosmetics with different functions, parts of action, formulations and users, were collected to conduct the applicability study of amplified ATP bioluminescence assay in microbial detection of cosmetics. Sample effect test was conducted firstly, and the products whose signal values met the requirements of the method were selected for further treatment. Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Candida albicans and Aspergillus niger were separately inoculated into the selected cosmetics at the target concentration of 10-100 CFU/g, the results of which were used to evaluate the applicability of amplified ATP bioluminescence assay. Results show that the signal values of 31 cosmetics are between 45-526 RLU, which are less than 3-fold signal value of medium blank and meet the requirements of the detection method. The signal values of 3 products are between 610-7 791 RLU, which are higher than 3-fold signal value of the medium blank and do not meet the method requirements. The test results of 27 products contaminated with 6 strains are all positive. 4 products are partially positively detected, and need to be further tested through dilution, neutralization, membrane filtration or other methods. In conclusion, amplified ATP bioluminescence assay is an effective and practical method for the microbial detection of cosmetics, and it can be applied in the rapid screening of the cosmetic products contaminated with microbes.

Key words: amplified ATP bioluminescence assay, cosmetics, microorganism, suitability

CLC Number: 

  • TQ658