Studies on the Preservation of Juice-Type Carbonated Beverages

Abstract

In Japan, no preservatives are permitted by the Food Sanitary Law for “Carbonated beverages” and as a result, we can't expect that so-called natural juice-type carbonated beverages should have effect of inhibiting spoilage-organisms, unless they are carbonated over the range of fresh taste. Far from that, generally, they are favourable medium for the growth of spoilage-organisms.
We have researched into differences of shelf-life properties among 5% natural juice containing samples, 10% natural juice containing sample, and no natural juice containing sample, and about the effect of adding sodium benzoate (BA-Na). The result is that 5% and 10% natural juice contained samples are deteriorated shortly and the addition of BA-Na (0.05% by weight in each of them) inhibits perfectly the growth of spoilage-organisms.