Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Malt extract"”.
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Investigating red pigment production by Penicillium purpurogenum DSM 62866
… was confirmed on a medium composed of 30 g.L- 1 malt extract and 3 g.L-1 soya peptone (MESP medium), following which the impact of varying cultivation conditions was investigated. Factors considered included cultivation temperature, pH and the application of buffers, and shaking speed during …
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Phytohormones and the Culture of Agaricus bisporus (Lange) Pilat
… diameter were increased by some phytohormones . Malt extract was shown to have auxin, gibberellin and cytokinin activity which may explain its superiority in formation of primordia over other media . Addition of synthetic phytohormones to malt extract agar accelerated primordium initiation and …
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An investigation of the production of volatile organic compounds (VOCs) by <i>Trichoderma</i> spp. and their mode of action against <i>Serpula lacrymans</i>
… </i>isolates grown on 3 different media (malt extract, minimal media and sawdust) and 4 <i>S. lacrymans</i> isolates demonstrated that levels of inhibition were influenced by <i>Trichoderma </i>isolate, media type and sensitivity of the <i>S. lacrymans</i> strain. The growth inhibition of …
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Secondary Metabolites from Xylaria Endophytes: The isolation and structure elucidation of secondary metabolites from Xylaria endophytes by chemical and spectroscopic methods
… endophytes were surface cultured on an aqueous malt extract-glucose medium. The fungus A311R, from a palm tree in Thailand, produced nonane-1,2,3-tricarboxylic acid, which was isolated for the first time as a natural product. Also isolated from the same fungus was spiculisporic acid; the first …
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Studies into Mg-preconditioning of brewer’s yeasts
… yielded highest cellular Mg contents in malt extract broth and dilute brewer’s wort media. Mg-acetate preconditioned lager yeast cells exhibited higher fermentative activities than non-preconditioned yeasts, resulting in higher yields of ethanol. The specific activity of the alcohologenic …
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The Evaluation of the Fungi Using Tower Fermenters
… for protein production utilizing an ganecie extract of the carob bean Ceratonia Stliquas A total of 37 fungi ( 15 basidienpectes and 18 Fungi Imperfecti ) were surface cultured on an aqueous carob extract solidified with agar and supplemented with (i) Glutdmic acid, (ii) Ammonium eudphate. …
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MECHANICAL ABRASION AND ELECTROPORATION IN THE TRANSFORMATION OF INTACT PLEUROTUS OSTREATUS HYPHÆ and NUTRIENT-DEPENDANT RESISTANCE TO HYGROMYCIN B
… species were grown on Potato dextrose agar, malt extract agar and an agar containing maltose, yeast-extract, peptone and glucose with concentrations of hygromycin B from zero to 100 μg/ml for 11 to 14 days. Micrometer measurements were used to determine the growth rate of each species on each …
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The antifungal coating of different wall finishing towards growth inhibition of aspergillus niger
… the spore suspension on a petri-dish containing malt extract agar. The sample was incubated at the relative humidity and temperature of 90% and 32oC respectively, based on the results of preliminary work. A visual assessment was made according to ASTM D5590-00 (2012). The results of antifungal …
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Assessment of Non-Saccharomyces Yeast Species as Secondary Fermenters in Beer
… yeast genera were studied. Yeast were grown in malt extract media to measure growth compared to <em>Saccharomyces cerevisiae</em> over a 36-hour period. Growth was assessed using a hemocytometer for enumeration. Replicate experiments were performed with lactic acid, ethanol, and hop content in …
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Comparative analysis of bacterial and fungal communities in two dairy parlors through the use of pyrosequencing, riboprinting, culture techniques, and microscopic analysis
… blue (EMB) for Gram-negative bacteria, and malt extract agar (MEA) with a chloramphenicol addition for fungi. Based on colony morphology, the five most commonly encountered bacteria from both TSA and EMB agar were subcultured and identified through riboprinting. Pyrosequencing was performed …
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Determination of the variability of colletotrichum Truncatum, the causal agent of Anthracnose of Soyabean (Glycine max( L) Merr.) in Zambia
… growth rate on potato Dextrose Agar (PDA) and Malt Extract Agar (MEA). The conidial size , germ tube elongation during conidial germination and pathogenicity of the isolates to three soyabean cultivars were also determined. The isolate Ct-07 had the largest acervulus diameter and Ct-03 had the …
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Relationships Between Environmental Factors and Fungi on Occupants' Perceptions of Indoor Air Quality
… samples for viable fungi were collected onto malt Extract Agar using a single-stage Impactor calibrated at a flow rate of 28 liters per minute (L/min) for five minutes. Air samples for non-viable fungi were collected with Air-O-Cell Cassettes using the SKC Bio-Pump at a flow rate of 15L/min …
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Lactic acid bacteria fermentation of wort as a tool to add functionality in malting, brewing and novel beverages
… culmorum, a common fungal spoilage organism in malt. The contribution of phenolic acids to the overall fungal inhibition was found to be limited unless combined with lactate and acetate in a low pH environment, suggesting their contribution in a complex, synergistic mechanism. An antifungal …
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Endophytes as source of polypeptide and polyketide antibiotics fengycin and bacillaene
… fengycin. Different complex substrates such as malt-, potato extracts and molasses as well as their mixtures were used as culture media. The maximum fengycin yield of 325mg/L was obtained in the optimized medium containing malt and potato extract. As the preparation of potato extract for a …