Related Experiment Video
Updated: Jun 19, 2026

Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
Published on: April 7, 2023
Quality analysis of commercial probiotic products for food animals
Wechsiri Wannaprasat1, Chailai Koowatananukul, Chanon Ekkapobyotin
1Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.
Abstract:
Thirteen commercial probiotic feed products were examined for microbiological content and the results were compared with the information available on the product labels. Antibiotic resistance of Lactobacillus and Bacillus was investigated. All the products were inaccurately labelled in either numbers or species of bacteria. Misnaming at the species level was the most common flaw. Lactobacillus exhibited higher-antibiotic resistance than Bacillus did. Plasmid was found in both Lactobacillus (22%) and Bacillus (2.5%). The vanA gene was present in one L. plantarum and one B. subtilis isolate. The vanA-containing B. subtilis also harbored the tetW gene. None of the genes detected appeared to be associated with a conjugative plasmid.
Related Concept Videos
Probiotics
Microbes in Food Production
Microbes in the Production of Fermented Foods
Microorganisms in Agriculture and Food industry
Clinically Relevant Drug Product Specifications: Methods of Establishment

