National Food Safety Standard - Introduction to Food Microbiology Testing Series GB4789

September 11, 2023

First, food microbial contamination

Microbial contamination of food means that the food is contaminated by microorganisms and their toxins during processing, transportation, storage and sale. Microbial contamination of food can not only reduce the quality of food hygiene, but also can cause harm to human health. Many food safety experts and nutrition experts are more worried about the more common microbial contamination in daily life than the harmful effects of additives in foods.

Common microbial contamination in foods are coliform, mold, yeast, Staphylococcus aureus, Salmonella, Shigella, hemolytic streptococcus, Listeria, Escherichia coli, Vibrio parahaemolyticus, Botox , Vibrio cholerae, Proteus, Campylobacter jejuni.

Second, the national food safety standard - food microbiology inspection series GB4789

The National Food Safety Standard - Food Microbiological Testing (GB4789) series includes:

Serial number	Standard	standard name
1	GB4789.1-2016	National Food Safety Standards for Food Microbiology Inspection
2	GB4789.2-2016	National Food Safety Standards
3	GB4789.3-2016	National Food Safety Standards Food Microbiological Testing Coliform Count
4	GB4789.4-2016	National Food Safety Standards Food Microbiological Test Salmonella Test
5	GB4789.5-2012	National Food Safety Standard Food Microbiology Inspection Shigella Test
6	GB4789.6-2016	National Food Safety Standards Food Microbiology Inspection Escherichia Coli Test
7	GB4789.7-2013	Food safety national standard food microbiology test parahaemolyticus test
8	GB4789.8-2016	National Food Safety Standards Food Microbiological Testing Yersinia Enterocolitis
9	GB4789.9-2014	National Food Safety Standards Food Microbiological Testing Cervical Campylobacter
10	GB4789.10-2016	National Food Safety Standards Food Microbiology Testing Staphylococcus aureus Test
11	GB4789.11-2014	National Food Safety Standards Food Microbiology Test β-hemolytic Streptococcus test
12	GB4789.12-2016	National Food Safety Standards Food Microbiological Testing Clostridium botulinum and Botulinum Toxin Test
13	GB4789.13-2012	Food safety national standard food microbiology test Clostridium perfringens test
14	GB4789.14-2014	National Food Safety Standards Food Microbiology Inspection Bacillus cereus test
15	GB4789.15-2016	National Food Safety Standards Food Microbiology Test Mold and Yeast Count
16	GB4789.16-2016	National Food Safety Standards Food Microbiology Testing Morphological Identification of Common Toxigenic Molds
17	GB/T4789.17-2003	Food hygiene microbiological examination meat and meat products inspection
18	GB4789.18-2010	National Food Safety Standards Food Microbiological Testing Milk and Dairy Products Inspection
19	GB/T4789.19-2003	Food hygiene microbiological examination egg and egg product inspection
20	GB/T4789.20-2003	Food hygiene microbiological examination aquatic food inspection
twenty one	GB/T4789.21-2003	Food hygiene microbiological examination of frozen drinks, beverage inspection
twenty two	GB/T4789.22-2003	Food hygiene microbiological examination condiment inspection
twenty three	GB/T4789.23-2003	Food hygiene microbiological examination cold food, bean products inspection
twenty four	GB/T4789.24-2003	Food hygiene microbiological examination of confectionery, cakes, candied fruit inspection
25	GB/T4789.25-2003	Food hygiene microbiological examination alcohol test
26	GB4789.26-2013	National Food Safety Standard Food Microbiology Testing Commercial Sterility Testing
27	GB/T4789.27-2008	Food hygiene microbiological examination of antibiotic residue test in fresh milk
28	GB4789.28-2013	National Food Safety Standards for Food Microbiological Testing Media and Reagents
29	GB/T4789.29-2003	Microbiological examination of food hygiene, Pseudomonas aeruginosa
30	GB4789.30-2016	Food safety national standard food microbiology test Listeria monocytogenes test
31	GB4789.31-2013	National Food Safety Standards Microbiological examination of Enterobacteriaceae phage diagnostic tests for Salmonella, Shigella and Escherichia coli
32	GB4789.34-2016	National Food Safety Standards Food Microbiological Testing Bifidobacterium Test
33	GB4789.35-2016	National Food Safety Standard Food Microbiology Inspection Lactic Acid Bacteria Test
34	GB4789.36-2016	National Food Safety Standards Food Microbiological Testing Escherichia Coli O157:H7/NM Test
35	GB4789.38-2012	National Food Safety Standards Food Microbiological Testing Escherichia Coli Count
36	GB4789.39-2013	National Food Safety Standards Food Microbiology Inspection Fecal Coliform Count
37	GB4789.40-2016	National Food Safety Standards Food Microbiology Test Cronobacter (E. sakazakii) Test
38	GB4789.41-2016	National Food Safety Standard Food Microbiology Test Enterobacteriaceae
39	GB4789.42-2016	National Food Safety Standard Food Microbiology Test Norovirus Test
40	GB4789.43-2016	National Food Safety Standards - Food Microbiological Examination - Determination of Antibacterial Activity of Microbial Source Enzyme Preparations

Third, the introduction of food microbial testing instruments

Food microbial testing equipment includes ultra-clean workbench , biochemical incubator, constant temperature and humidity chamber, blast drying oven, autoclave, acidity meter , and electronic analysis.