Ethanol extracts from the different parts of B. orellana showed differential antimicrobial activity. It was found that the extracts of in vitro leaves showed maximum activity against Bacillus pumilus followed by the extracts from the roots and hypocotyls. The callus derived from different explants too showed antimicrobial activity. The leaf callus showed maximum activity. The zone of inhibition...

With the aim of engineering a strain of bacteria that could be used for bioremediation of cellulosic waste in radioactive environments, the gene for the secreted endoglucanase enzyme of Bacillus pumilis was decided to be cloned into the radiotolerant bacterium, Deinococcus radiodurans. The endoglucanase gene from B. pumilus was PCR amplified and cloned into Escherichiacoli DH5α using a pDrive v...

A study was executed in a direction to attenuate Sclerotinia stalk rot (SSR) disease through biocontrol agent and also to enhance crop productivity. Culture filtrate of bacterial strain YSPMK11 inhibited growth of Sclerotinia sclerotiorum in vitro which also exhibited higher plant growth promoting attributes. Interaction studies revealed maximum (81.50%) growth inhibition at 35 °C and pH 7.0 af...

Ultraviolet (UV) reactors used for disinfecting water and wastewater must be validated and monitored over time. The validation process requires understanding the photochemical properties of the pathogens of concern and the challenge microorganisms used to represent them. Specifically for polychromatic UV systems, the organisms' dose responses to UV light and their sensitivity across the UV spec...

The purpose of this work was to obtain heat resistance data relevant to pasteurisation regimes and to model the effects of a range of temperatures (93 to 107°C) and pH (3.6 to 6.4) on the survival of the several Bacillus spp. spores that have been associated with spoilage of foods (Bacillus pumilus, B. licheniformis, B. subtilis, and B. megaterium), and to validate the results obtained by heati...

A total of twenty aerobic endospore-forming bacilli, isolated from marine invertebrates and sea water of different areas of the Pacific Ocean, were taxonomically characterized. Most of the bacilli (11 strains) of marine origin belonged to the species Bacillus subtilis, according to their phenotypic characteristics, antibiotic susceptibility profiles, and fatty acids patterns. A group of four al...

Peningkatan produksi udang vaname ( L. vannamei ) menyebabkan kebutuhan akan benih unggul juga semakin meningkat. Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan probiotik yang berbeda terhadap tingkat kelulushidupan dan mampu memberikan hasil terbaik. Penelitian dilakukan selama 17 hari, dimulai dari stadia nauplius hingga post larva (PL-10). Jenis eksperimen dengan menggunak...

Entomopathogenic fungi are potential tools to biocontrol cicadellids and delphacids, two groups of insects that cause extensive damage to agricultural crops. However, bacteria living on the host cuticle may inhibit fungal growth. In the present work, following the molecular characterization of 10 strains of Bacillus isolated from the integument of cicadellids and delphacids, we selected isolate...

A screening of marine bacteria for antimicrobial activity resulted in the isolation of Bacillus pumilus (SP21) from a sediment sample collected in the Bahamas. A bioassayguided fractionation led to the isolation of five surfactin analogs, glycocholic acid, amicoumacins A and B in addition to three new compounds named lipoamides A–C. The chemical structure of all the bioactive compounds was eluc...