Nisin natural antimicrobial is used to control bacterial spoilage in both heat processed and low pH foods. Nisin is a natural polypeptide antibacterial produced by strains of Lactococcus lactis subsp lactis. Nisin is effective against a wide range of Gram-positive bacteria and is particularly effective against the heat resistant spores produced by Gram-positive Bacillus and Clostridium spp. Nisin has no effect against Gram-negative bacteria, yeasts or moulds.
Nisin is manufactured from the fermentation of a milk-based medium by Lactococcus lactis subsp. lactis. The nisin from this fermentation is concentrated, dried and standardized with sodium chloride to produce Nisin, which has a known and consistent level of nisin activity.
Nisin is soluble in aqueous environments and is most stable to heat in acidic conditions. At typical usage levels, Nisin does no affect the colour or flavour of the finished product.
Natamycin is also called pimarcin or tennecetin, which is produced by Streptomyces sp. and purified by modern separation technology.
Natamycin is a fungicide that prevents yeasts and moulds from appearing in foods. It is extremely effective when used in small amounts. It is used in smaller quantities than potassium sorbate, and unlike other sorbates it prevents yeasts and moulds from migrating into the product, eliminating the cost of reapplication. The action of natamycin does not destroy other microorganisms, meaning that it does not alter the foodâ??s natural maturing process. Natamycin contains 50% lactose/glucose/salt and 50% Natamycin, which prevents the formation of moulds and yeasts on the surface.Unlike other antimicrobial agents, it does not affect the appearance, taste or colour of the products.
Transglutaminase (TG), better known to chefs as â??Meat Glue,â?? which is widely distributed in nature, is an enzyme with the revolutionary ability to improve the physical properties of various protein containing foods.
TG is produced through fermentation process which is similar to making beer, wine and cheese, using conventional microorganisms.
TG is not active in the stomach, which is characterized by acidic pH, and that TG is completely degraded by pepsin. TG is a safe food enzyme which has been utilized in Europe for more than 15 years and approved in numerous other regions, including, but not limited to, U.S.A., Canada, Brazil, Japan, Korea, China and Thailand. Technologies of TG are used in processed meat/fish, combined quality meat/fish products, dairy products and bakery products.
Typically TG works within the protein of food materials, and contributes to improving texture properties. In case TG is used to combine quality meat/fish parts, TG works to the proteins which are added to the food applications. TG itself does not combine meat/fish parts. This is basically possible with TG and liquefied proteins. There is no technological function or effect of enzyme in the final product.TG does not affect the taste of food.
TG is active within a wide pH range (pH 5-8). It is stable up to a temperature of 40â??.Above 75â??the enzyme looses its activity within a few minutes if used at usual dosages. The use of the TG offers various benefits to food companies and final consumers. In bakery and milk products, it improves texture. In process meat products, such as emulsified sausage and cooked ham, it improves texture and increases connectivity, thus decreasing loss during manufacturing process. In meat and fish, it enables combining quality parts of meat/fish, decreasing loss and waste, and consequently reducing pricing of the final products. It also replaces binding agents such as salt, allowing consumers to benefit from a lower salt intake.
Because there is no technological function in the final products, TG is legally to be assessed as a processing aid, not as a food additive in many countries. There is no labeling required for final foods containing TG, only with regard to the use in raw meat or raw meat products, a labeling could be necessary.
