Antioxidant and antimicrobial activity of fruit and corolla methanolic extracts of Vaccinium varingiifolium (Blume) Miq., a wild species of Blueberry
DOI:
https://doi.org/10.55981/bkr.2023.739Keywords:
antioxidant, antimicrobial, metabolic compoundsAbstract
Blueberries (Vaccinium spp.) are widely consumed, because they have an attractive color and unique taste. They are considered one of the richest sources of natural antioxidants. Vaccinium varingiifolium is one of the wild types of blueberries that have yet to be widely studied for its use. This research was conducted to determine which chemical compounds are contained in the fruit and corolla of V. varingiifolium and their potential as antioxidants and antibacterials. The antioxidant activity test was carried out by scavenging the free radical 1-(2,6-dimethyl phenoxy)-2-(3,4-dimethoxy phenylethylamine) propane hydrochloride (DPPH), while the antibacterial test was carried out by the agar diffusion method. The results showed that the fruit and corolla extracts of V. varingiifolium could scavenge DPPH free radicals. The corolla of V. varingiifolium has better DPPH free radical scavenging activity than the fruit part. In addition, the corolla and fruit extracts of V. varingiifolium showed the potential to inhibit the growth of Pseudomonas aeruginosa, Salmonella typhimurium, and Staphylococcus aureus. however, they did not show inhibition against Candida albicans and Streptococcus mutans. It can be concluded that V. varingiifolium is a potential source of antioxidants and antibacterials.
