| diversity of black aspergilli isolated from raisins in argentina: polyphasic approach to species identification and development of scar markers for aspergillus ibericus. | aspergillus section nigri is a heterogeneous fungal group including some ochratoxin a producer species that usually contaminate raisins. the section contains the series carbonaria which includes the toxigenic species aspergillus carbonarius and nontoxigenic aspergillus ibericus that are phenotypically undistinguishable. the aim of this study was to examine the diversity of black aspergilli isolated from raisins and to develop a specific genetic marker to distinguish a. ibericus from a. carbonari ... | 2015 | 26114593 |
| integrated use of residues from olive mill and winery for lipase production by solid state fermentation with aspergillus sp. | two-phase olive mill waste (tpomw) is presently the major waste produced by the olive mill industry. this waste has potential to be used as substrate for solid state fermentation (ssf) despite of its high concentration of phenolic compounds and low nitrogen content. in this work, it is demonstrated that mixtures of tpomw with winery wastes support the production of lipase by aspergillus spp. by agar plate screening, aspergillus niger mum 03.58, aspergillus ibericus mum 03.49, and aspergillus uva ... | 2014 | 24276916 |
| two novel species of aspergillus section nigri from thai coffee beans. | two novel species of aspergillus section nigri from thai coffee beans are described as aspergillus aculeatinus sp. nov. and aspergillus sclerotiicarbonarius sp. nov. their taxonomic status was determined using a polyphasic taxonomic approach with phenotypic (morphology and extrolite profiles) and molecular (beta-tubulin, internal transcribed spacer and calmodulin gene sequences) characteristics. a. aculeatinus sp. nov. is a uniseriate species with a similar morphology to aspergillus aculeatus an ... | 2008 | 18599725 |
| aspergillus ibericus: a new species of section nigri isolated from grapes. | as part of a study on the ochratoxin producing mycoflora of grapes, several aspergillus strains were isolated and tested for their ochratoxin a (ota) producing abilities. aspergillus strains of the section nigri, which did not produce detectable amounts of ota but which had a similar morphology to a. carbonarius, were isolated from wine grapes and/or dried vine fruit in portugal and spain. these strains, however, have characters that allow morphological distinction from the other species in the ... | 2006 | 16894975 |
| olive pomace valorization by aspergillus species: lipase production using solid-state fermentation. | pollution by olive mill wastes is an important problem in the mediterranean area and novel solutions for their proper management and valorization are needed. the aim of this work was to optimize a solid-state fermentation (ssf) process to produce lipase using olive pomace (op) as the main source of nutrients by several aspergillus spp. optimized variables in two different designs were: ratio between olive pomace and wheat bran (op:wb), nano3 , czapek nutrients, fermentation time, moisture conten ... | 2016 | 26601619 |
| lipase production by aspergillus ibericus using olive mill wastewater. | olive mill wastewater (omw) characteristics make it a suitable resource to be used as a microbial culture media to produce value-added compounds, such as enzymes. in this work, the ability of the novel species aspergillus ibericus to discolor omw and produce lipase was studied. an initial screening on plates containing an omw-based agar medium and an emulsified olive oil/rhodamine-b agar medium was employed to select the strain a. ibericus mum 03.49. then, experiments in conical flasks with liqu ... | 2013 | 22791217 |
| incidence of fumonisin b(2) production by aspergillus niger in portuguese wine regions. | fumonisin b(2) (fb(2)) was recently found to be produced by aspergillus niger . when grape-derived products were subsequently analyzed, fb(2) contamination was found in raisins, must, and wine. this study evaluated 681 strains of black aspergilli species isolated from portuguese wine grapes for fb(2) production when grown on czapek yeast agar. fb(2) was not detected in aspergillus carbonarius (n = 75) or aspergillus ibericus (n = 9) strains, but it was detected in 176 (29%) of the strains belong ... | 2011 | 21668017 |
| optimization of lipase production by solid-state fermentation of olive pomace: from flask to laboratory-scale packed-bed bioreactor. | lipases are versatile catalysts with many applications and can be produced by solid-state fermentation (ssf) using agro-industrial wastes. the aim of this work was to maximize the production of aspergillus ibericus lipase under ssf of olive pomace (op) and wheat bran (wb), evaluating the effect on lipase production of c/n ratio, lipids, phenols, content of sugars of substrates and nitrogen source addition. moreover, the implementation of the ssf process in a packed-bed bioreactor and the improve ... | 0 | 28488139 |