GB 4789.2-2022 Translated English of Chinese Standard (GB4789.2-2022): National food safety standard - Microbiological examination of food: Aerobic plate count
https://www.chinesestandard.net, Aug 21, 2022 - Technology & Engineering - 13 pages
This Standard specifies the method for the determination of aerobic plate count in food. This Standard applies to the determination of aerobic plate count in food.
adjust the pH aerobic plate count Appendix appropriate count range autoclaving at 121 calculated by multiplying Calculation result Degree colony count Colony count/CFU Uncountable colony growth containing count agar medium data is rounded Degree of dilution dilution Colony count/CFU dilution ratio dissolve distilled water equipment and materials evenly Examination procedure Example expressed figures follows food safety standard g Distilled g mL g of sample half incubate Ingredients larger flaky colonies less less than 30 Liquid sample Magnifying glass main nutrient Medium and reagents micropipette Modify multiplying the average number of colonies Number of plates Oscillate plate count agar possible Preparation method principle of rounding record reported rounded up according sample homogenate sampling is reported Select significant digits solidified sterile homogeneous Sterile normal saline sterile petri dish Sterile phosphate buffer stock solution surface test piece Test sample Thermostat tube uncountable Calculation result Weigh