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J Tradit Complement Med. 2016 May 18;7(2):152-157. doi: 10.1016/j.jtcme.2016.04.002. eCollection 2017 Apr.

Antioxidant, antimicrobial activity and bioactive compounds of Bergenia ciliata Sternb.: A valuable medicinal herb of Sikkim Himalaya.

Author information

1
G.B. Pant Institute of Himalayan Environment and Development, Sikkim Unit, Pangthang, Gangtok, Sikkim 737101, India.
2
G.B. Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, Uttarakhand 263643, India.

Abstract

Bergenia ciliata Sternb., commonly known as Paashaanbhed, is a well known herb of Sikkim Himalaya with various pharmaceutical properties. However, scientific exploration of B. ciliata, growing in the Sikkim Himalaya, for phytochemicals and pharmacological properties is in infancy. With this view, the present study was undertaken to investigate B. ciliata leaf extracts for antioxidant, antimicrobial activity and bioactive compounds. Three solvents viz., methanol, ethyl acetate and hexane were used for extraction and the respective leaf extracts were analyzed for total phenolic and flavonoid contents along with the antioxidant and antimicrobial activities. Amongst the tested solvents, methanol was found to be the best solvent for extraction with highest total phenolic contents and the lowest IC50 values for the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. Methanol extract also exhibited effective antimicrobial activity, particularly against bacteria and actinomycetes. Further, high performance liquid chromatography (HPLC) analysis revealed that methanolic extract contains the highest amount of all the three analyzed bioactive compounds viz. bergenin, catechin and gallic acid. The current study suggests that the methanol extract of B. ciliata is a potential source of natural antioxidant and antimicrobial compounds that can be used in food and drug industries.

KEYWORDS:

ABTS, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid); Antioxidant; Bergenia ciliata; DPPH, 2,2-diphenyl-1-picrylhydrazyl; Flavonoid content; HPLC, high performance liquid chromatography; Phenolic content; Sikkim Himalaya

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