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  • Title: Determination and quantification of asiaticoside in endophytic fungus from Centella asiatica (L.) Urban.
    Author: Gupta S, Bhatt P, Chaturvedi P.
    Journal: World J Microbiol Biotechnol; 2018 Jul 06; 34(8):111. PubMed ID: 29980864.
    Abstract:
    Centella asiatica (L.) Urban is a highly considered medicinal plant owing to its secondary metabolites asiaticoside, madecassoside, asiatic acid, and madecassic acid. The asiaticoside, one of the most important constituents of the plant, is a triterpenoid saponin having memory enhancement property. Given its medicinal properties, we isolated and characterized endophytic fungi from this plant with the aim to screen these microorganisms for asiaticoside production. In total, we isolated 13 endophytic fungi from the leaves of the plant, out of which one of the isolates produced asiaticoside. This asiaticoside producing isolate was identified as Colletotrichum gloeosporioides by internal transcribed spacer-based rDNA sequencing. The presence of asiaticoside in ethyl acetate extract of C. gloeosporioides was confirmed by LC-MS. The production of asiaticoside measured in relation to incubation time and subculture generation revealed presence of 62.29 ± 3.36 µg/100 mL of asiaticoside by C. gloeosporioides on the 15th day in first subculture generation followed by a decrease in subsequent generations. A similar trend was also shown by yield and growth curve of C. gloeosporioides. The asiaticoside production and yield were found to be positively correlated. This paper reported the production of asiaticoside by an endophytic fungus C. gloeosporioides for the first time. The present findings definitely provide an impetus to the production of asiaticoside by utilizing the endophytic source. Chemical compound studied in this article: Asiaticoside (PubChemCID: 108062).
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