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China Surfactant Detergent & Cosmetics ›› 2025, Vol. 55 ›› Issue (5): 668-676.doi: 10.3969/j.issn.2097-2806.2025.05.016

• Analytical methods and testing • Previous Articles    

Establishment and feasibility study of a dual enrichment system for amplified ATP bioluminescence microbial detection assay in cosmetics

Ting Li1,Ziying Ma1,Jiquan Liu2,Shenghui Cui3,Yu Jing1,Feirong Bai1,Su Yao1,*()   

  1. 1. China National Research Institute of Food & Fermentation Industries Co., Ltd., Beijing 100015, China
    2. Procter & Gamble International Operations, Singapore 138547, Singapore
    3. National Institutes for Food and Drug Control, Beijing 100050, China
  • Received:2024-05-11 Revised:2025-04-30 Online:2025-05-22 Published:2025-06-11
  • Contact: *E-mail: Su.yao@china-cicc.org.

Abstract:

To improve the microbial detection efficiency in cosmetics, an amplified ATP bioluminescence 24 h assay with dual enrichment system was established. Meanwhile, growth promotion test of an enrichment medium and product suitability test was carried out. 11 of slow-growing fungi, yeasts and bacteria were selected as representative strains, and the key parameters such as culture temperature and enrichment medium formula were optimized. The results show that the enrichment system that promoted fungal growth is TLE medium incubated at 25 ℃, and the bacterial enrichment system is MTAT medium incubated at 32.5 ℃. 32 representative strains relevant to raw materials and production environment of cosmetics are collected and tested. They all grow well in the enrichment system,and the results of amplified ATP bioluminescence 24 h assay are all positive. Subsequently, six kinds of cosmetics with different functional claims, use parts, production dosage forms and use methods are selected and inoculated with six reference strains recommended by Chinese Pharmacopoeia (2020) for product suitability test. The background values of the tested cosmetics meet the requirements of the detection method. Results of spiking test show that all the samples tested are positive. Therefore, amplified ATP bioluminescence 24 h assay has a promising application prospect in the rapid screening of microorganisms in cosmetic fields.

Key words: amplified ATP bioluminescence, cosmetics, dual enrichment system, growth promotion test, product suitability test

CLC Number: 

  • TQ658