Morphological, anatomical and antibacterial characteristics of Leonotis nepetifolia plants growing in Binh Thuan Province, Vietnam

Nguyen Thi Huong Giang; Pham Van Ngot; Dang Thi Ngoc Thanh

doi:10.30574/gscbps.2021.14.2.0041

Authors

Nguyen Thi Huong Giang Ben Cat High School, Binh Duong province, Vietnam.
Pham Van Ngot Faculty of Biology, HCMC University of Education, Ho Chi Minh City, Vietnam.
Dang Thi Ngoc Thanh Faculty of Natural Science Pedagogy, Sai Gon University, Ho Chi Minh City, Vietnam.

DOI:

https://doi.org/10.30574/gscbps.2021.14.2.0041

Keywords:

Binh Thuan, Folk remedy, Inhibitory zone, Leonotis nepetifolia (L.) R. Br, Micro-anatomy, Morphology

Abstract

Lion's ear [Leonotis nepetifolia (L.) R. Br.] is a Vietnamese medicinal plant that has been described in basic morphology and isolated for a number of chemical compounds. This study aims to supplement a database of morphology, micro-anatomy and antibacterial abilities of this species. Micro-anatomical analysis was based on a double staining method microscopic dimensional measurement of plant. The antibacterial capacity was based on the diameter of the inhibitory zone. The results showed that the plant had the characteristics of adapting to the dry and light conditions of the region. Leaf extract at the content of 4.8 to 8.0 mg had the best inhibitory ability on 5 strains of bacteria B. cereus, S. aureus, E. faecalis, P. aeruginosa, and E. coli. The inhibition zone diameters were 0.27, 10.33, 5.00, 3.80 and 2.23 mm, respectively.

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