Common Name: Xylose Lysine Deoxybile Salt (XLD) Agar
English name:Xylose Lysine Desoxycholate Agar
Used for the isolation and cultivation of Salmonella.
Culture medium is a mixed nutritional product prepared by artificial methods, specifically for microbial cultivation, separation, identification, research, and preservation. The yeast powder and lysine contained in xylose lysine deoxycholate (XLD) agar provide nitrogen sources and growth factors; Lactose, sucrose, and xylose provide carbon sources; Sodium chloride maintains cell osmotic pressure; Deoxybile salts are inhibitors of Gram positive bacteria; Ammonium iron citrate can promote the production of hydrogen sulfide; Phenol red as a pH indicator; Agar is a coagulant.
It is made from medium materials such as lysine, yeast powder, lactose, sucrose, xylose, sodium chloride, sodium thiosulfate, deoxycholic salt, ferric ammonium citrate, phenol red, agar, etc., which are ball milled and packaged.
After pre-treatment according to GB standards, the samples were inoculated into a culture medium at 36 ± 1 ℃ for 18-24 hours, and the results were observed.
Escherichia coli grows well with yellow colonies; Salmonella typhimurium grows well with black colonies; Shigella flexneri grows well, with colorless colonies, and the growth of Staphylococcus aureus is inhibited.
1. This culture medium is only used for scientific research and research
2. The collected specimens must be inoculated and cultured as soon as possible to ensure accurate results.
3. The specimens used and their cultivation waste should be considered as potentially infectious substances and should be disposed of in accordance with the operating standards of infectious disease laboratories.
4~30 ℃, stored away from light.
【Period of validity】
Valid for 3 years
1. GB 4789.4-2016 National Food Safety Standard for Microbiological Examination of Food - Salmonella Examination
2. SN/T 1538.1-2005 Guidelines for the Preparation of Culture Medium Part 1: General Principles for Quality Assurance of Laboratory Culture Medium Preparation
3. SN/T 1538.2-2007 Guidelines for the Preparation of Culture Media Part 2: Practical Guidelines for Performance Testing of Culture Media
4. WS/T 232-2002 Quality Inspection Procedures for Commercial Microbial Culture Media
5. GB 4789.28-2013 National Food Safety Standard - Quality Requirements for Food Microbiology Testing Media and Reagents