Shrimp residues generated by the seafood industrial processing are generally discarded in environment without any further treatment, leading to a loss of nutritional value such as proteins, lipids, chitin, carotenoids, and minerals. This practice can lead environmental problems due decomposition these substances air. The objective this study was extract astaxanthin-rich materials from shrimp (L...

mojtaba moharami 1 - hossein modirrousta 2       1-assistant professor of  bee pathology, razi vaccine and serum research institute. 2- msc of  microbiology, razi vaccine and serum research institute abstract  american foulbrood (afb), a severe bacterial disease of honeybee brood, caused by the sporeforming bacterium paenibacillus larvae subspecies larvae. the agent, infect and kill larvae and ...

An enzyme extracted from Bacillus cereus spores caused to germinate spores of this organism which had been sensitized by reagents which rupture disulphide bonds. Inactivation of the enzyme by thiol-blocking agents and by oxidation, and reactivation by reduction suggested that the enzyme’s ability to germinate spores depended on thiol groups. No evidence was obtained to support the hypothesis th...

The spores of Henneguya salminicola, a common tissue parasite of salmonid fishes in the northern hemisphere, were observed in stool specimens from two different patients with diarrhea. The spores' superficial resemblance to human spermatozoa resulted, in one instance, in an incorrect report, leading to suspicion of sexual abuse. H. salminicola spores and human spermatozoa can be differentiated ...

Berberine, an alkaloid originally extracted from the plant Coptis chinensis and other herb plants, has been used as a pharmacological substance for many years. The therapeutic effect of berberine has been attributed to its interaction with nucleic acids and blocking cell division. However, levels of berberine entering individual microbial cells minimal for growth inhibition and its effects on b...

Bacterial spores such as Bacillus atrophaeus are one of the most resistant life forms known and are extremely resistant to chemical and environmental factors in the dormant state. During germination, as bacterial spores progress towards the vegetative state, they become susceptible to anti-sporal agents. B. atrophaeus spores were exposed to the non-nutritive germinant dodecylamine (DDA), a cati...

Bacillus megaterium NRRL B-1368 cells and spores were produced on Trypticase Soy Broth (TSB) and Agar (TSA) containing 3.8 mug of aflatoxin B(1) per ml, analyzed for selected chemical constituents, and compared to cells and spores of B. megaterium produced on nontoxic Trypticase Soy Media. There was an initial 30% kill of cells after inoculation into toxic TSB and during the first 3.5 hr of inc...

Arbuscular mycorrhizas (AM) have mutualistic symbiosis with plants and thus efforts have been placed on application of these symbiotic relationships to agricultural and environmental fields. In this study, AM fungi were collected from 25 sites growing with 16 host plant species in Korea and cultured with Sorghum bicolor in greenhouse condition. AM fungal spores were extracted and identified usi...

The airborne fungal spore content in Havana, Cuba, collected by means a non-viable volumetric methodology, was studied from November 2010 - October 2011. The study, from a qualitative point of view, allowed the characterization of 29 genera and 5 fungal types, described following the Saccardo´s morphotypes, as well as their morphobiometrical characteristics. In the amerospores morphotype, the c...

All 47 food-borne isolates of Bacillus cereus sensu stricto, as well as 10 of 12 food-borne, enterotoxigenic isolates of Bacillus thuringiensis, possessed appendages. Spores were moderately to highly hydrophobic, and each had a net negative charge. These characteristics indicate that spores of food-associated B. thuringiensis and not only B. cereus sensu stricto have high potential to adhere to...