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US 9,107,443 B2Granted
Liquid nisin compositions
AssigneeDsm IP Assets B.V.
InventorsJohannes Martinus Jacobus Visser, Ben Rudolf De Haan
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Abstract
The present invention relates to liquid nisin compositions having a high anti-microbial activity. The invention further relates to a method for preparing the liquid nisin compositions as well as their use as a preservative in food products.
Claims14
A method for preparing a liquid nisin composition, comprising the steps of:
- a) mixing powder nisin with an aqueous solution to prepare a first liquid nisin containing composition having a pH of 3.5 to 12 and a final inorganic salt concentration of 1.5 M or below,
- b) isolating solid compounds from the prepared first liquid nisin containing composition by centrifugation, filtration or any combination thereof,
- c) contacting the isolated solid compounds with a solution having a pH of 1 to 3 to prepare a second liquid nisin composition, and optionally
- d) removing solid compounds from the second liquid nisin composition.
1 more element
Dependencies are inferred from the claim text.