Bacillus mycoides

Antibacterial Activity of Seaweeds and their Extracts

Published in Leonel Pereira, Therapeutic and Nutritional Uses of Algae, 2018

Leonel Pereira

In the study made by Kosanic et al. (2015), biological activities of two macroalgae from Adriatic coast of Montenegro were evaluated. Extracts of Ulva lactuca showed a better antimicrobial activity with minimum inhibitory concentration values ranging from 0.156 to 5 mg mL−1, but it was relatively weak in comparison to standard antibiotics. Bacillus mycoides and Bacillus subtilis were the most susceptible to the tested extracts. Extracts from Ulva intestinalis (formerly Enteromorpha intestinalis) also inhibited all of the tested microorganisms, but at slightly higher concentrations.

Bacillus

Published in Dongyou Liu, Laboratory Models for Foodborne Infections, 2017

Jessica Minnaard, Ivanna S. Rolny, Pablo F. Pérez

The early works of Pollender, Brauell, Delafond, and Davaine on anthrax or carbuncle prompted Robert Koch to enunciate the paramount postulates of the germ theory of disease and Louis Pasteur to establish effective immunization for anthrax prevention in the seminal experiment of massive livestock vaccination at Pouilly-le-Fort.3–5 It is known that some Bacillus species constitute a very definite cluster sharing many characteristics. This so-called “cereus group” includes microorganisms that can be identified as Bacillus cereus (B. cereus sensu lato) on the basis of conventional microbiological procedures, but the use of more refined techniques lead to a more precise identification. The B. cereus group encompasses seven species, that is, Bacillus anthracis—the etiological agent of anthrax, B. cereus (sensu stricto), Bacillus thuringiensis, Bacillus mycoides, Bacillus pseudomycoides, Bacillus weihenstephanensis, and Bacillus cytotoxicus.6–8 The division between species of the B. cereus group is based on phenotypic characteristics related to differences in ecology and pathogenesis. However, adoption of molecular approaches strongly suggests that members of the B. cereus group belong to one single species.9–12 In this chapter, we will include bacterial species stated in the original publications irrespective of the exact taxonomic nomenclature.

Published in Ronald M. Atlas, James W. Snyder, Handbook Of Media for Clinical Microbiology, 2006

Ronald M. Atlas, James W. Snyder

Use: For the isolation and cultivation of a wide variety of fastidious microorganisms. It can also be used as a base for the preparation of blood agar in determining hemolytic reactions. For the cultivation and maintenance of Bacillus anthracis, Bacillus cereus, Bacillus mycoides, Serratia rubidaea, Staphylococcus aureus, Tsatumella ptyseos, and Vibrio vulnificus.

Evaluation of the antimicrobial mechanism of biogenic selenium nanoparticles against Pseudomonas fluorescens

Published in Biofouling, 2023

Ying Xu, Ting Zhang, Jiarui Che, Jiajia Yi, Lina Wei, Hongliang Li

Biogenic SeNPs are synthesized by some microorganism as biocatalysts without reducing agents and stabilizers. Microorganisms can grow fast and are easily cultivated. Therefore, the method of microbial synthesis SeNPs has the advantages of short operation time and simple processing, which provides a safe and environmentally innovative method for the production of nanoparticles with high bioactivity and low cytotoxicity (Sheiha et al. 2020). SeNPs have antioxidant, antitumor, and anti-cancer biological functions, and show spectral antimicrobial activity, especially against bacteria and yeast. SeNPs have been demonstrated to be an antimicrobial agent against a range of invasive organisms (Hosnedlova et al. 2018). Nguyen et al. (2017) found that SeNPs showed antimicrobial activity against Escherichia coli O157:H7, Staphylococcus aureus, Salmonella, and Listeria monocytogenes. Cremonini et al. (2016) showed that SeNPs synthesized by Stenotrophomonas maltophilia and Bacillus mycoides inhibited the growth of P. aeruginosa. However, there has been no reports indicating that SeNPs have antimicrobial activity against P. fluorescens.