International journal of food microbiology 2010 139(3): 127-33 gandomi h, misaghi a, basti aa, bokaei s, khosravi a, abbasifar a, et al : effect of zataria multiflora essential oil on growth and aflatoxin formation by aspergillus flavus in culture media and cheese. 698 peter jcotty southern regional research center, agricultural research service, united states department of agriculture, new orleans, louisiana, 70179, usa communities of aspergillus section flavi resident in soils planted with cotton were compared among several areas in. Abstract objective: in this study, antifungal substances were isolated from different soil bacteria like clostridium species in the presence of different nitrogen sourcesthe isolated antifungal substances were then tested against aspergillus and trichoderma species to analyse their potential activity. Aspergillus penicillioides is a true halophile, present in diverse econiches – from the hypersaline athalassohaline, and thalassohaline environments, to polyhaline systems, and in different geographical locations twenty seven isolates from these environments, were seen to be moderate halophiles, euryhaline in nature they had an obligate need of a low a w and were unable to grow on a. Aspergillus and penicillium species have been reported as the most frequent and dominant ones, with records of the occurrence of many mycotoxigenic species the presence of different species raises the concern of multimycotoxin occurrence, while the increased consumption of.
Otherwise there is an antagonistic effect between the water important than that of the water activity of the germination medium activity of the suspension, aw su, and the water activity of germination, the data obtained for aspergillus and penicillium species suggest that aw ge. 36 the open nanoscience journal, 2008, volume 2 kulys and stupak tion of np reached steady-state after 200 s indicating the finishing of the process the deposition time. In addition to these organism names, telomorphic stages of the aspergillus species are also included in the eurotium, emericella, and neosartorya species a fumigatus is the most frequently observed fungus in airborne spore surveys (armstrong et al, issues mycol, 2:1-20 . A method and device for detection and quantification of biologically significant analytes in a liquid sample is described the method includes contacting a volume of a liquid sample with predetermined amounts of at least a first and second redox reversible species having redox potentials differing by at least 50 millivolts.
Many of these antifungal species have the characteristics of ‘microbial weeds’—ie, species able to dominate communities that develop in open microbial habitats—a concept recently introduced for microorganisms by cray et al 2013. Waksman, a microbiologist, from a species of soil bacteria, called streptomyces griseus , particularly tubercle bacilli, and has proved to be very valuable against tuberculosis . For example, several species including aspergillus oryzae and aspergillus niger are used in industry for enzyme production and food processing in contrast, aspergillus flavus produce the most potent naturally present carcinogen aflatoxins, which contaminate various plant- and animal-based foods. Bioinorganic chemistry and applications is a peer-reviewed, open access journal that publishes original research in the form of articles, notes, letters and reviews in the general field of bioinorganic chemistry and its applications. The bio-molecules from various plant components and microbial species have been used as potential agents for the synthesis of silver nanoparticles (agnps) in spite of a wide range of bio-molecules assisting in the process, synthesizing stable and widely applicable agnps by many researchers still poses a considerable challenge to the researchers.
46 esiegbuya o d et al: degradative effect of aspergillus species on some physiochemical and chemical parameters of olein fraction of shea butter pharmaceutical, food and leather industries (gulati et al, 2005 gunstone, 1999. The results suggest that tested trametes species have significant medicinal potentials which could be attributed to antioxidative and cytotoxic activity additionally both, basidiocarps and mycelia extracts can strongly inhibit activity of acetylcholinesterase and tyrosinase. Varied potentials of aspergillus species in synthesis of silver nanoparticles why studying in an all-female college is a bad idea essays philosophical and. Adverse health effects of indoor molds paper2004 - download as pdf file (pdf), text file (txt) or read online adverse health effects of indoor molds paper2004 adverse health effects of indoor molds paper2004 j allergy clin immunol 2004 pathogenic aspergillus species recovered from a hospital water system: a 3 year prospective.
The antimycotic action of agnps varied according to different fungal species results confirmed the ability of c comosum green shoot extract to act as an reducing and stabilizing agent during the synthesis of agnps. Aflatoxin contamination in groundnut (arachis hypogaea l) caused by aspergillus species in ethiopiaephrem guchi samara university, school of natural and computational sciences, department of applied biology, samara, ethiopia. Characterization of amylase from some aspergillus and bacillus species associated with cassava waste peels sani, a, awe, fa and akinyanju, ja (1992) amylase synthesis in aspergillus flavus and aspergillus niger grown on cassava peel journal of industrial microbiology and biotechnology, 10, 55-59.
The contamination of corn (maize) by fungi and the accumulation of mycotoxins are a serious agricultural problem for human and animal health one particular devastating group of mycotoxins, called. The fungus kingdom encompasses an enormous diversity of taxa with varied ecologies, life cycle strategies, and morphologies ranging from unicellular aquatic chytrids to large mushrooms however, little is known of the true biodiversity of kingdom fungi, which has been estimated at 22 million to 38 million species [5. In aspergillus species, growth in the presence of glucose is normally associated with organic acid production and an associated drop in ph in addition, growth in the presence of ammonium, the main nitrogen source of ynb, also decreased medium ph because uptake of ammonia is accompanied by the release of a proton from the cell, as shown for.
Many fungal species exhibit unique and superior metabolic functions, including secondary metabolite production and detoxification of environmental pollutants, which are associated with cytochrome p450-dependent reactions in the last decade, fungal genome projects have uncovered the astonishing. Selection of suitable biological method for the synthesis of silver nanoparticles muhammad ashraf sabri, asim umer, gul hameed awan, muhammad faheem hassan, and azhar hasnain vibrio cholera and two fungal species aspergillus niger and aspergillus flavus a natural source for the synthesis of silver nanoparticles. Journal of applied microbiology explore this journal explore this journal the two major morphotypes of a flavus varied greatly between provinces, aflatoxins are metabolites produced by several aspergillus species these metabolites are highly toxic to humans and domestic animals. Aspergillus penicillioides is a true halophile, present in diverse econiches – from the hypersaline athalassohaline, and thalassohaline environments, to polyhaline systems, and in different geographical locations twenty seven isolates from these environments, were seen to be moderate halophiles, euryhaline in nature.