Comparison of phenolic profiles and antioxidant potentials of the leaves and seeds of Thai holy and sweet basils

Abstract

Eight phenolics rosmarinic, caftaric, caffeic, chicoric, p-hydroxybenzoic, p-coumaric, protocatechuic acid and rutin were identified in Thai holy/sweet basil leaves or seeds. The overall phenolics in THBL were two, three and twenty times higher than that in TSBL, THBS and TSBS, respectively. Oppositely, the TP content of TSBL was one and a half times higher than THBL which was followed by THBS and TSBS. The order of scavenging DPPH free radical activity from high to low was THBL, TSBL, THBS and TSBS and consistent with their overall phenolics. In a cholesterol oxidation model, THBL exhibited higher antioxidant activity with lower level of 7-ketocholesterol (2.67 AE 0.31 lg/mL) than TSBL (4.49 AE 0.32), THBS (7.78 AE 1.25) or TSBS (13.10 AE 0.61). The results demonstrated that Thai holy basil has higher antioxidant capability than sweet basil and could be used as an effective bioactive ingredient to provide health-promoting function in food.

Melatonin-enhanced biosynthesis of antimicrobial AgNPs by improving the phytochemical reducing potential of a callus culture of Ocimum basilicum L. var. thyrsiflora

“…The TPC reported by Shen et al (2015) was 304.01 AE 12.46 mg CE per g DW and 10 mg CE per g DW for wild leaves and seeds, respectively. 40 These values are much lower than our ndings because in in vitro cultures various PGRs are responsible for secondary metabolites enhancement. The total phenolic production associated with DW was found to be maximum (365.05 mg L À1 ) in response to 9.0 mM TDZ, whereas the other PGR concentrations resulted in lower values (Fig.…”

Protective effect of sweet basil extracts against vitamin C degradation in a model solution and in guava juice

“…Lagouri and Nisteropoulou () previously reported that rosmarinic acid was a slightly stronger reducing agent than vitamin C (EC 50 = 0.0022 and 0.0033, respectively). Hence, other phenolic compounds in the crude extracts, such as chicoric acid, protocatechuic acid, caftaric acid, and p ‐hydroxybenzoic acid, might be responsible for the FRAP reducing power in this case (Lee, ; Shen, Prinyawiwatkul, Lotrakul, & Xu, ). These results supported the authors' hypothesis that crude extracts from sweet basil leaves have a potential to protect vitamin C.…”

Effects of different solvents on total phenolic and total anthocyanin contents of Clitoria ternatea L. petal and their anti‐cholesterol oxidation capabilities

“…Antioxidant capacity was measured as the decrease in absorbance at 517 nm in a UV-visible SpectraMax Plus384 spectrophotometer (Shen et al, 2015). The DPPH solution (0.01 mM, 1.8 mL) was mixed with 0.2 mL of each petal extract in spectrophotometric cuvettes.…”