Structural elucidation of the exopolysaccharide produced by Curvularia lunata isolate RJ01
نویسندگان
چکیده
Abstract. Jayus J, Akroman R, Nurhayati, Nugraha AS, Piluharto B, Seviour RJ. 2021. Structural elucidation of the exopolysaccharide produced by Curvularia lunata isolate RJ01. Biodiversitas 22: 2699-2705. An (EPS) was recovered from culture filtrates fungus RJ01 prepared in Jember, Indonesia. Based on a prominent peak at 883 cm-1, FTIR analysis suggested it is ?-D-glucan, proposal confirmed subsequent nuclear magnetic resonance (NMR) which showed anomeric protons omit signal d4.37 and 4.8 ppm, sugar proton region 2.5 to 4.2 ppm. High-performance liquid chromatography (HPLC) acid hydrolysates this glucan revealed presence glucose (64%) mixture galactose mannose (36%). Digestion with (1-->3)-?- (1-->6)-?-glucanase Acremonium sp. IMI 383068 gave consistent linear products (1-->3)-?-glycosidic linkages, since digested (1-->3)-?-glucanase only. The rheological behavior aqueous EPS solution suggests behaves as pseudoplastic non-Newtonian fluid thus has potential for use thickening agent foods. This study first report structural C. lunata.
منابع مشابه
Eumycetoma due to Curvularia lunata
change in the crescent-shaped cap of the distal phalanx are the two main candidate pathogenetic mechanisms that have been proposed.[6] Exposure to teratogens, especially antiepileptic drugs in utero, in mothers with epoxide hydrolase deficiency is another supposed cause of COIF. This probably could explain our patient’s predicament, as her mother had consumed an abortifacient when our patient w...
متن کاملAllergic fungal rhinosinusitis due to Curvularia lunata.
We report a case of Curvularia lunata infection in an immunocompetent male with an initial diagnosis of suspected left side allergic fungal rhinosinusitis (AFRS), treated surgically. He had a relapse of nasal polyposis and underwent a surgical revision under local anaesthesia with endoscopic nasal polypectomy. The histological examination of the surgical specimen showed an inflammatory polyp of...
متن کاملAllergic bronchopulmonary disease caused by Curvularia lunata and Drechslera hawaiiensis.
Three patients who developed bronchoceles caused by fungi other than Aspergillus sp are described. The first patient presented for investigation of a lesion at the right hilum on chest radiograph and a raised blood eosinophil count. A bronchogram showed complete block of the apical segmental bronchus which at operation was shown to be caused by inspissated material. The second patient was inves...
متن کاملSpontaneous Regression of Allergic Bronchopulmonary Mycosis Due to Curvularia lunata
Allergic bronchopulmonary mycosis (ABPM) is a pulmonary hypersensitivity disease mainly caused by Aspergillus fumigatus. The mainstay treatment for ABPM is systemic corticosteroid therapy. A 25-year-old man presented with pulmonary infiltrates. His peripheral eosinophil, total serum IgE, and serum Aspergillus-specific IgE levels were elevated. The patient tested positive in a skin test for Aspe...
متن کاملBiotransformations of 20-hydroxyecdysone and analogues by Curvularia lunata NRRL 2178.
20-Hydroxyecdysone, the arthropod moulting hormone, was biotransformed by the fungus Curvularia lunata NRRL 2178 to the rare ecdysteroid, 2-dehydro-3-epi-20-hydroxyecdysone, and the novel 3alpha,9alpha-cyclo ecdysteroid analogue, (20R,22R)-3beta,14alpha,20,22,25-pentahydroxy-3alpha,9alpha-cyclo-5beta-cholest-7-en-2,6-dione in 14 and 44% yields, respectively. Ponasterone A and pterosterone were ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biodiversitas
سال: 2021
ISSN: ['1412-033X', '2085-4722']
DOI: https://doi.org/10.13057/biodiv/d220530