Production of secondary metabolite E2.2 from Phaleria macrocarpa endophytic fungus

• Published in: Asian Pacific Journal of Tropical Biomedicine
• Main Authors: Beatrix Trikurnia Gasong, Raymond Rubianto Tjandrawinata
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wolters Kluwer Medknow Publications 2016
• Subjects: Endophytic fungi; Phaleria macrocarpa; Secondary metabolite; Colletotrichum gloeosporioides; E2.2; Arctic medicine. Tropical medicine; RC955-962; Biology (General); QH301-705.5; Arctic
• Online Access: https://doi.org/10.1016/j.apjtb.2016.01.005; https://doaj.org/article/08822074af174f589de119f5fdd9ffa3

Objective: To isolate new endophytic fungus from Phaleria macrocarpa (P. macrocarpa) that is able to produce E2.2 compound. Methods: Endophytic fungi were isolated from P. macrocarpa. Morphological and molecular identification was done to determine the species of the endophytic fungus. High performance liquid chromatography was used to determine the ability of this fungus to produce E2.2 compound and to quantify the total yield of E2.2 from fungal fermentation. Fermentation process was optimized by observing suitable medium, pH and length of fermentation process. Phloroglucinol and gallic acid addition were examined to determine the effect of each compound on E2.2 production. Results: One endophytic fungus was successfully isolated from P. macrocarpa plant. Morphological and molecular identification showed that it was a Colletotrichum gloeosporioides which belonged to Glomerellaceae family. This fungus showed highest production of E2.2 when incubated in potato dextrose broth with initial pH value of the medium at 5, and was incubated for 15 days. Phloroglucinol was found to better enhance E2.2 production. Conclusions: Colletotrichum gloeosporioides found in P. macrocarpa plant is promising as a potential alternative source of E2.2.