| ≥1 piece |
Nisin is a natural antimicrobial agent used as a preservative in heat processed and low pH foods. According to the Food Chemical News Guide (a reference guide to the uses of foods additives permitted under Federal Law), a nisin preparation is a concentrate of dry material derived from the controlled fermentation of a naturally occurring milk bacteria Streptococcus lactis. This bacterium contains nisin, a group of related peptides (partial amino acid chains that make up proteins) with antibiotic activity. The chemical nisin cannot be synthesized artificially, so the nisin-producing bacteria are basically farmed for their synthesis of nisin.
How is it made?
Is it safe?
Despite these endorsements, it is important to note that nisin is not currently approved as an allowable ingredient in organic food production. According to the latest Organic Materials Review Institute list, the National Organic Standards Board considers it a prohibited processing ingredient and any organic food containing added nisin will lose its organic status. However, some individuals in the organic industry are asking that nisin be reconsidered for inclusion on the allowable list. The primary objection to nisin has been the fact that it can, in some instances, be the product of genetically engineered bacteria. However, it may be possible for manufacturers to discern the genetically engineered status of nisin prior to using it in their products. If organic food manufacturers can reliably select nisin from non-genetically engineered bacteria, it could be deemed compatible with organic food processing. Research regarding this issue is now underway.
Use and limitations:
Nisin is considered effective at controlling a wide range of gram-positive organisms including: Listeria, enterococcus, Bacillus sporothermodurans, and clostridium. Used alone, it is not effective on gram-negative bacteria (like E coli ), yeasts, and molds. However, research suggests that it may be useful against some gram-negative bacteria when used in conjunction with other preservatives.
In conclusion-based on the way it is manufactured, its GRAS status, and its "natural" labeling designation-nisin appears to qualify as a safe and natural food preservative.
Registered Index :
CAS No.1414—45—5; INS No.234; EEC No.234
Molecular Formula: C 143H 228N 42O 37S 7
Character:
Quality Specification:
| Item | Standard | Item | Standard |
| Appearance | Grey or White Powder | Sodium Chloride | Min 50% |
| Water Content | Max 3% | Hydrous Potency | Min 1 × 10 6 IU/g |
| pH of 10% Aqueous Solution | 3.10-3.60 | Microbiological Count | Max 10/g |
| Pb | Max 10mg/kg | E.Coli in 25g | Absent |
| As | Max 3mg/kg | Salmonella in 25g | Absent |
Amount for Application: GB 2760-2008; FAO/WHO, 1984; FDA § 184.1; EEC
Toxicity: GRAS(FDA § 184.1538, 1994); ADI 33000 IU/kg (FAO/WHO, 1994)
Packing: 500g*20bottles/carton;1000g*20bottles/carton; as customers request.
Storage: Store unopened under 20℃ In dry conditions, away from direct sunlight. When opened, store under 20℃ in original container in dry conditions, away from direct sunlight. Shelf life is 18 months when stored according to recommendations.