Abstract
In this study, we determined the antioxidant and antibacterial activity in different types of lotus tea (Nelumbo nucifera Gaernt.) in Thua Thien Hue province, Vietnam. The results showed that in four types of lotus tea, the catalase enzyme activity was 0.92-1.35 U/mg protein, the peroxidase enzyme activity was 0.97-2.67 U/mg protein, ascorbic acid content was 0.088-0.135%, the IC50 value was 4.98-6.03 mg/mL and all four kinds of lotus tea inhibited bacteria to a variable extent with low sensitivity. The inhibition zone’s mean diameter increased from 0.23 cm to 0.77 cm. The flower lotus tea gave the highest results on most of the research criteria and the lowest was lotus rhizome tea. From obtained results, tea produced from lotus plants grown in Thua Thien Hue province, Vietnam has a high potential for antioxidant and antibacterial properties.
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