Antifungal activity of lichen extracts and usnic acid for controlling the saprolegniasis

Three strains of endolichenic fungi identified as Creosphaeria sassafras, Annulohypoxylon multiforme and Penicillium vulpinum, were isolated from samples of Peltigera species collected from Shennongjia forest region in Central China. The anti-pathogenic microorganic activities of them were assessed by the methods of culturing with their fermentation broth and plate confrontation co-culture against four pathogenic fungi. The results showed that some strains had more obvious inhibitory effect than positive control strain Chaetomium globosum. We conclude that some endolichenic fungi have the potential for use in developing a novel therapy to control plant disease and saprolegniasis.

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Potensi Antijamur terhadap Aspergillus Flavus Senyawa Metabolit Sekunder Organisme Lichen Teloschistes Flavicans

Maulidiyah

Hasan

Irna

et al. 2019

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Lichen adalah organisme simbiosis unik yang terbentuk dari hubungan mutualisme antara alga dan jamur. Lichen sangat potensial untuk dikembangkan sebagai bahan obat modern, terutama di Indonesia yang belum banyak meneliti tentang lumut. Penelitian ini bertujuan untuk mengisolasi dan uji aktivitas antijamur senyawa metabolit sekunder dari lichen Teloschistes flavicans. Penelitian ini dilakukan dengan mengekstraksi serbuk kering lichen dengan menggunakan pelarut aseton selama 3×24 jam. Ekstrak aseton diisolasi dengan kromatografi kolom (KK) dan kromatografi lapis tipis (KLT) dengan fase diam silika gel G.60 yang dielusi dengan pelarut n-heksan dan etil asetat secara bertahap. Isolat kristalin dimurnikan dengan proses rekristalisasi. Senyawa murni ditentukan oleh strukturnya menggunakan UV-VIS, FTIR, LC-MS, dan 1H-NMR. Senyawa yang diisolasi diperoleh jarum oranye "3-[1'- (2", 3"-dihydroxy-phenyl)-propyl]-7hydroxy-chroman-4-one" dengan rumus C18H18O5. Uji aktivitas antijamur terhadap Aspergillus flavus menggunakan metode difusi cakram menunjukkan bahwa zona hambat adalah 11 mm pada konsentrasi 1000 mg/mL.

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Antifungal activity of lichen extracts and usnic acid for controlling the saprolegniasis

Abstract: Abstract-Aquatic

Cited by 3 publications

References 12 publications

Usnic acid: from an ancient lichen derivative to promising biological and nanotechnology applications

Usnic acid: from an ancient lichen derivative to promising biological and nanotechnology applications

Biocontrol Activity of Three Endolichenic Fungi from Peltigera

Potensi Antijamur terhadap Aspergillus Flavus Senyawa Metabolit Sekunder Organisme Lichen Teloschistes Flavicans

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