Abstract
Acer ginnala Maxim. var. aidzuense (Franch.) Pax was reported recently from Kumamoto Prefecture, Japan after many years. Thus, the main objective of present study was to identify the chemical constituents in the leaves of title plant and evaluate the antioxidant activity of the extract and isolated compounds. Gallic acid (1), methyl gallate (2) and acertannin (3) were isolated from the 70% MeOH extract of the leaves. The extract and all isolated compounds showed potent antioxidant activity.
Highlights
The genus Acer, belonging to family Aceraceae has about 200 species worldwide and among them, 26 species are distributed in Japan[1]
We report the chemical constituents in the leaves of Acer ginnala var. aidzuense and the antioxidant activity of the extract and isolated compounds
The leaves of Acer ginnala var. aidzuense were collected from Asagiri Town, Kumamoto, Japan in May 2014 and shade dried for one month
Summary
The genus Acer, belonging to family Aceraceae has about 200 species worldwide and among them, 26 species are distributed in Japan[1]. Acer aidzuense (Franch.) Nakai), commonly known as ‘Karakogi-kaede’ is a deciduous tree about 2-5 m mainly found in wetlands[2]. It is widely distributed in eastern parts of Japan but comparatively rare in western parts including Kyushu Island[3]. The tea made from young leaves of A. ginnala, known as Gao-Cha is used for the prevention of hypertension and inflammation[8] and used in treatment of eye problems and headache[9]. These traditional uses suggested that the different plant parts Acer ginnala var. We report the chemical constituents in the leaves of Acer ginnala var. aidzuense and the antioxidant activity of the extract and isolated compounds
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