The present invention describes a process to preserve a water-containing product such as a foodstuff, which comprises adding natamycin and nisin to the product, whereby at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in crystal form.
대표청구항▼
1. A process to preserve a water-containing food product comprising at least about 82% moisture content, the process comprising the step of applying natamycin and nisin in or on the product, wherein: (a) if natamycin and nisin are applied in the product, then (ia) natamycin is present in the product
1. A process to preserve a water-containing food product comprising at least about 82% moisture content, the process comprising the step of applying natamycin and nisin in or on the product, wherein: (a) if natamycin and nisin are applied in the product, then (ia) natamycin is present in the product in an amount of 1 to 10 ppm natamycin based on the water content of the product, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iia) nisin is present in the product in an amount of 0.25 to 20 ppm, and wherein(b) if natamycin and nisin are applied on the product, then (ib) natamycin is present on the product in an amount of 0.01 to 7 ppm natamycin, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iib) nisin is present on the product in an amount of 0.0001 to 1 ppm. 2. The process according to claim 1, wherein nisin and natamycin are added at the same time. 3. The process according to claim 1, wherein nisin and natamycin are present in an antimicrobial composition. 4. The process according to claim 1, wherein nisin and natamycin are applied at the surface of the product. 5. The process according to claim 1, wherein nisin and natamycin are applied by spraying or dipping. 6. The process according to claim 3, wherein the antimicrobial composition further comprises water and/or a salt and/or a component selected from the group consisting of a solvent, a surfactant, a carrier, a food acid, a thickener, and another food grade anti-microbial compound. 7. The process according to claim 1, wherein the product is selected from the group consisting of dairy products, ice cream mixes, spreads, margarines, sauce, and dressings. 8. A water-containing food product comprising at least about 82% moisture content and further comprising natamycin and nisin, wherein: (a) if natamycin and nisin are in the product, then (ia) natamycin is present in the product in an amount of 1 to 10 ppm natamycin based on the water content of the product, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iia) nisin is present in the product in an amount of 0.25 to 20 ppm, or(b) if natamycin and nisin are present at a surface of the product, then (ib) natamycin is present at the surface of the product in an amount of 0.01 to 7 ppm natamycin, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iib) nisin is present at the surface of the product in an amount of 0.0001 to 1 ppm. 9. The product according to claim 8, wherein the product is selected from the group consisting of dairy products, ice cream mixes, spreads, margarines, sauce, and dressings. 10. The product according to claim 9, wherein the product is a dairy product that is selected from the group consisting of cottage cheese, ricotta, cream cheese, sour cream and dairy desserts. 11. A process to preserve a water-containing food product comprising at least about 82% moisture content, the process comprising the step of applying natamycin and nisin in or on the product, wherein: (a) if natamycin and nisin are applied in the product, then (ia) natamycin is present in the product in an amount of 1 to 10 ppm natamycin based on the water content of the product, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iia) nisin is present in the product in an amount of 0.25 to 20 ppm, and wherein(b) if natamycin and nisin are applied on the product, then (ib) natamycin is present on the product in an amount of 0.01 to 7 ppm natamycin, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iib) nisin is present on the product in an amount of 0.0001 to 1 ppm;wherein the product produced by step (a) or (b) prevents growth of:(c) yeast and/or fungi for up to 6 weeks at temperatures ranging from 4 to 7° C.; and/or(d) yeast and/or bacteria for up to 3 months at temperatures ranging from 6 to 10° C. 12. The process of claim 11, wherein the product produced by step (a) or (b) prevents growth of: (c)(1) Kluveromyces maxianus or Penicilliumroque forti for up to 6 weeks at temperatures ranging from 4 to 7° C. 13. The process of claim 11, wherein the product produced by step (a) or (b) prevents growth of: (c)(2) Listeria innocua for up to 6 weeks at temperatures ranging from 4 to 7° C. 14. The process of claim 11, wherein the product produced by step (a) or (b) prevents growth of: (d)(1) Lactobacilli for up to 3 months at temperatures ranging from 6 to 10° C. 15. A water-containing food product comprising at least about 82% moisture content and further comprising natamycin and nisin, wherein: (a) if natamycin and nisin are in the product, then (ia) natamycin is present in the product in an amount of 1 to 10 ppm natamycin based on the water content of the product, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iia) nisin is present in the product in an amount of 0.25 to 20 ppm, or(b) if natamycin and nisin are present at a surface of the product, then (ib) natamycin is present at the surface of the product in an amount of 0.01 to 7 ppm natamycin, wherein at least 90% (w/v) of natamycin is dissolved and/or less than 10% (w/v) of natamycin is present in solid form and the natamycin has an average particle diameter of at least 10 micrometers, and(iib) nisin is present at the surface of the product in an amount of 0.0001 to 1 ppm;wherein the product comprising natamycin and nisin prevents growth of:(c) yeast and/or fungi for up to 6 weeks at temperatures ranging from 4 to 7° C.; and/or(d) yeast and/or bacteria for up to 3 months at temperatures ranging from 6 to 10° C. 16. The water-containing food product comprising natamycin and nisin of claim 15, wherein the product prevents growth of: (c)(1) Kluveromyces maxianus or Penicillium roqueforti for up to 6 weeks at temperatures ranging from 4 to 7° C. 17. The water-containing food product comprising natamycin and nisin of claim 15, wherein the product prevents growth of: (c)(2) Listeria innocua for up to 6 weeks at temperatures ranging from 4 to 7° C. 18. The water-containing food product comprising natamycin and nisin of claim 15, wherein the product prevents growth of: (d)(1) Lactobacilli for up to 3 months at temperatures ranging from 6 to 10° C. 19. The process according to claim 1, wherein if natamycin and nisin are applied in the product, then natamycin is present in the product in an amount of 1 to 5 ppm. 20. The process according to claim 1, wherein if natamycin and nisin are applied on the product, then natamycin is present on the product in an amount of 0.1 to 5 ppm. 21. The process according to claim 1, wherein if natamycin and nisin are applied on the product, then natamycin is present on the product in an amount of 0.5 to 4 ppm. 22. The water-containing food product according to claim 8, wherein if natamycin and nisin are in the product, then natamycin is present in the product in an amount of 1 to 5 ppm. 23. The water-containing food product according to claim 8, wherein if natamycin and nisin are present at the surface of the product, then natamycin is present at the surface of the product in an amount of 0.1 to 5 ppm. 24. The water-containing food product according to claim 8, wherein if natamycin and nisin are present at the surface of the product, then natamycin is present at the surface of the product in an amount of 0.5 to 4 ppm.
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