GB 1886.229-2016Food additive -- Aluminum potassium sulfate (English PDF)

2.2 Formula

NisnA. The first 27 amino acid histidine (His); NisnZ. The first 27 amino acid asparagine (Asn)

2.3 Relative molecular mass

NisinA. 3354.35 (according to 2013 international relative atomic mass) NisinZ. 3330.31 (according to 2013 international relative atomic mass)

3.1 Sensory requirements

Sensory requirements shall comply with the requirements of Table 1.

GB 1886.231-2016

Table 1 Sensory requirements

Project requires test methods Color light brown to milky white State powder the sample is placed in the appropriate uniform white porcelain plate, observe its color under natural light and state

3.2 Physical and Chemical Indicators

Physical and chemical indicators should be consistent with the provisions of Table 2.

Table 2. Physical and chemical indicators

Item Index Test Method Titer/(IU/mg) >= 900 Appendix A A.3 Loss on drying, w /% <= 3.0 GB 5009.3 Sodium chloride, w /% >= 50.0 GB/T 5009.42 Lead (Pb)/(mg/kg) <= 1.0 GB 5009.75 Note. The commercialization of nisin product shall comply with the standards of nisin as a raw material, sodium chloride can be added, and other accessories made of milk solids, in line with its potency claims.

3.3 Microbial indicators

Microbiological indicators comply with Table 3.

Table 3 microbiological indicators

Item Index Test Method Cfu/(CFU/g) <= 10 GB 4789.2 Coliform/(MPN/g)