Effects of ascorbic acid and metals on the light-induced off-flavor in milk.
To resolve the light-induced off-flavor in milk,natural antioxidant such as ascorbic acid is added to study its effect.By getting the sensory evaluation,pH,acid degree and thiobarbituric acid reactive substances(TBARS)test of the treated milk samples,the affection of ascorbic acid and metals on milk was studied.The results show that as to other milk samples with only ascorbic acid,the sample with blending of ascorbic acid and certain proportions of metals has the lower pH,higher acid degree,and its TBARS degree is only 0.25 mg·kg-1,it also gets the highest evaluation score.All this can be the foundation of further research on light-induced off-flavor substances in milk.