Samples containing fruit juices revealed a decrease in their antioxidant capacity ( ) due to the storage time already after 4 days (11.5%, when stored at 4°C; and by 23.7%, when stored at 22°C). This group showed significant dependence ( ) on temperature as well. The total decrease ( ) after 7 days of storage was 17.1% (4°C) and 28.3% (22°C), respectively.
Samples, which did not contain fruit juices but contained preservatives (samples A3, A4, A5, and A6), showed an insignificant decrease in the antioxidant capacity depending on the storage temperature. On the other hand, there was a significant decrease ( ) of the antioxidant capacity depending on the storage time.
Samples A1 and A2, which did not contain both fruit juices and preservatives, revealed significant decrease ( ) in their antioxidant capacity when stored at laboratory temperature after 4 days (12.2%). There was a significant decrease ( ) in their antioxidant capacity after 7 days of storage, depending on the storage temperature (9.9%, when stored at 4°C; and by 19.6%, when stored at 22°C).