Stability of gamma-aminobutyric acid in fruit juice during storage
2008
Shimizu, T.(Calpis Co. Ltd., Sagamihara, Kanagawa (Japan). R and D Center) | Sawai, Y.
Ready-to-drink (RTD) beverages prepared from 18 kinds of fruit juice were packed in 190 g cans. The gamma-aminobutyricacid (GABA) content of the packed beverages was investigated using an amino acid analyzer. The GABA contents of beverages prepared from concentrated citrus juice were 7-40mg/100 g. As the representative of RTD beverages, Rio red grapefruit juice in an 800ml PET bottles, which contained 33mg/100 g GABA, was used to evaluate the shelf-life of the beverages in a storage test. The GABA content of this juice showed no decrease after heating at 80, 90, 97 and 115degC, during storage at 20, 37 and 55degC, or after irradiation with 20,000 lux using fluorescent lamps. These results show that GABA is stable in RDT beverages during storage.
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