Date: 26 November 2013
Secondary metabolites, structure diagram: Trivial name – Orlandin
Copyright: n/a
Notes:
Species: A. nigerSystematic name: [8,8′-Bi-2H-1-benzopyran]-2,2′-dione, 7,7′-dihydroxy-4,4′-dimethoxy-5,5′-dimethyl-Molecular formulae: C22H18O8Molecular weight: 410Chemical abstracts number: 69975-77-5Selected references: Orlandin: a nontoxic fungal metabolite with plant growth inhibiting properties. Cutler, Horace G.; Crumley, Farrist G.; Cox, Richard H.; Hernandez, Oscar; Cole, Richard J.; Dorner, Joe W. Georgia Coastal Plain Exp. Stn., Sci. Educ. Adm., Tifton, GA, USA. Journal of Agricultural and Food Chemistry (1979), 27(3), 592-5.
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These colonies were isolated from a BAL, (also with bacterial qrowth of S.aureus and S.maltophilia) from a patient with a VAP (undergoing corticosteroid treatment). The growth medium used is sabouraud dextrose agar , incubated at 37° C
The identification is made by microscopic/macroscopic observation criteria.
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Microscopic morphology of A. flavus. Conidial heads are radiate, splitting to form loose columns, biseriate but having some heads with phialides borne directly on the vesicle.
