Patent ID: 8277860
Filing Date: 2012-10-02
Classification: A23L,C07C,Y02A

Abstract:
1. A method for stabilizing 1,4-dihydroxy-2naphthoic acid, which comprises reducing the level of oxygen dissolved in a solution containing the 1,4-dihydroxy-2-naphthoic acid to 5 ppm or less, by substituting the oxygen with an inert gas without adding a stabilizing agent, and further conducting a heat treatment on the solution wherein the solution is at least one liquid food or drink selected from the group consisting of a milk, a drink containing a dairy product, a lactic acid bacteria beverage, a soy-milk, a vegetable juice, a fruit juice, a tea drink, a coffee drink, a cocoa drink, a sports drink, an energy drink, a carbonated beverage, an alcoholic beverage and a soup.