Affiliation:
1. Department of Natural Drugs Faculty of Pharmacy Masaryk University Palackého tř. 1946 612 00 Brno-Královo Pole Czechia
2. Faculty of Environment and Resource Studies Mahidol University Salaya, District Nakhon Pathom 73170 Thailand
3. Institute of Geosciences and Environmental Management Rivers State University P.M.B. 5080 Port Harcourt Nigeria
4. College of Agricultural and Natural Sciences Joseph Ayo Babalola University Ikeji-Arakeji Osun State Nigeria
Abstract
AbstractThis work examined the variation in chemical and biological properties of Moringa oleifera Lam. shoot (MOS) teas prepared under different degrees of fermentation, viz: non‐fermented, semi‐fermented and fermented. The chemical composition was ascertained via FTIR, GC‐MS, total phenolic and total flavonoid content. Also determined were the biological properties, including antioxidant, antimicrobial and alpha‐amylase inhibitory activities. The data confirmed that MOS teas were rich in phenolic and flavonoid compounds, with fermented MOS tea displaying the highest phenolic and flavonoid contents. With respect to antioxidant property, all tea extracts exhibited good radical scavenging activities against DPPH⋅, ABTS⋅+ and NO⋅, and the radical scavenging capacity was in the order of non‐fermented>semi‐fermented>fermented MOS teas. The same trend was also observed for the antimicrobial activities against Staphylococcus aureus and Staphylococcus epidermidis. In contrast, the fermented MOS tea exhibited better α‐amylase inhibitory activity compared to the non‐fermented and semi‐fermented MOS teas.