This research compared the efficacy of water and ethanolic extracts of Ocimum aristatum as inhibitors and antioxidants, and found that the water extract exhibited superior activity. The major active compounds identified in the extract were fatty acids, phenolic groups, flavonoids, and carboxylic acids. The study also found that the water extract was non-toxic to zebrafish embryos.
Ocimum aristatum, commonly known as O. stamineus, has been widely studied for its potential as an herbal medicine candidate. This research aims to compare the efficacy of water and 100% ethanolic extracts of O. stamineus as alpha-glucosidase inhibitors and antioxidants, as well as toxicity against zebrafish embryos. Based on the study findings, water extract of O. stamineus leaves exhibited superior inhibition activity against alpha-glucosidase, ABTS, and DPPH, with IC50 values of approximately 43.623 +/- 0.039 mu g/mL, 27.556 +/- 0.125 mu g/mL, and 95.047 +/- 1.587 mu g/mL, respectively. The major active compounds identified in the extract include fatty acid groups and their derivates such as linoleic acid, alpha-eleostearic acid, stearic acid, oleanolic acid, and corchorifatty acid F. Phenolic groups such as caffeic acid, rosmarinic acid, 3,4-Dihydroxybenzaldehyde, norfenefrine, caftaric acid, and 2-hydroxyphenylalanine and flavonoids and their derivates including 5,7-Dihydroxychromone, 5,7-Dihydroxy-2,6-dimethyl-4H-chromen-4-one, eupatorin, and others were also identified in the extract. Carboxylic acid groups and triterpenoids such as azelaic acid and asiatic acid were also present. This study found that the water extract of O. stamineus is non-toxic to zebrafish embryos and does not affect the development of zebrafish larvae at concentrations lower than 500 mu g/mL. These findings highlight the potential of the water extract of O. stamineus as a valuable herbal medicine candidate, particularly for its potent alpha-glucosidase inhibition and antioxidant properties, and affirm its safety in zebrafish embryos at tested concentrations.
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