Search results for "Bacillus"
showing 10 items of 774 documents
OATS AND FAT-FREE MILK BASED FUNCTIONAL FOOD PRODUCT
2001
The present study addresses problems and solutions related to new functional bio-active food product creation. Commercial rolled oats and fat-free milk were used as raw materials. Limited enzymatic hydrolysis of oat starch was carried out by α-amylase. The lactic acid bacteria strains Lactobacillus acidophilus, Bifidobacterium sp., and commercial starter cultures ABT-1 were cultivated in enzymatically hydrolysed oat mash. Lactobacillus acidophilus was a more active producer of lactic acid, while Bifidobacterium sp. improved the taste properties. A fat-free milk additive was applied to stabilise the texture of the oat mash, and increase the protein content of the final product. All procedure…
Antagonistic activity of Bacillus subtilis strain AG1 against fungal microorganisms associated with Vitis vinifera.
2009
Wykorzystanie antagonistycznych właściwości Bacillus subtilis wobec Rhizoctonia solani
2017
Production of indole acetic acid by endophytic Bacillus strains
2018
Celem pracy by³o wyizolowanie i scharakteryzowanie bakterii endofitycznych korzeni buraka cukrowego pod k¹tem ich zdolnooeci do produkcji kwasu indolilooctowego (IAA). Materia³ dooewiadczalny do izolacji bakterii endofitycznych stanowi³y korzenie burak cukrowego. Ilooeæ wytworzonego IAA przez endofityczne szczepy Bacillus (B. amyloliquefaciens, B. megaterium, B. subtilis) oznaczono metod¹ kolorymetryczn ¹ z odczynnikiem Salkowskiego. Szczepy hodowano w po¿ywce LB (Laurin Broth) suplementowanej L-tryptofanem w stê¿eniach 100–10000 g/cm3 i inkubowano w 30 oC przez 7 dni. Najwy¿sze stê¿enie IAA odnotowano po 4 dniach w hodowlach zawieraj¹cych 10000 g/cm3 L-tryptofanu. Dla szczepu B. subtilis i…
Risk of Bacillus cereus and Pseudomonas aeruginosa nosocomial infections in a Burns Centre: the microbiological monitoring of water supplies for a pr…
1995
This paper reports on an extensive epidemiological survey of the microbiological monitoring of the environment, staff, and patients in the Intensive Care Unit of the Palermo Bums Centre (Italy). The aim of the survey was to evaluate the presence and distribution of environmental sources of pathogens and opportunistic bacterial agents of nosocomial infection in immunocompromised hosts. Strains collected from air, tap water, and medical and nursing staff were compared with strains isolated from burn patients in order to study the potential transmission route of bacteria. The results showed environmental strains presenting a profile identical to that of the clinical strains, suggesting a link …
Attitudini tecnologiche di batteri lattici starter per la fermentazione di olive verdi da mensa
2009
The main characteristics for lactic acid bacteria to be used as starter cultures for table olive production include the capacity to grow in presence of high concentrations of sodium chloride (NaCl) and phenols and at low temperatures. These bacteria have to show a homolactic fermentation for carbohydrates and the ability for a rapid acidification of brines. Other important traits for strain selection are represented by the expression of β-glucosidase enzymes, antimicrobial substances and flavoring metabolites. Lactobacillus plantarum and Lactobacillus pentosus are frequently employed as starter for table olives. Recently, lactobacilli/enterococci mixed starter cultures have been used for th…
Purification and characterization of an intracellular family 3 β-glucosidase from Lactobacillus sanfranciscensis CB1
2005
Lactobacillus sanfranciscensis CB1 uses cellobiose and other β-glucosides (methyl-β-glucoside, arbutin, amygdalin and salicin) as carbon sources. A hexameric ca. 288 kDa β-glucosidase was purified to homogeneity from Lact. sanfranciscensis CB1 by four chromatographic steps. The enzyme was optimally active at pH 7.5 and 40°C. It had a pI of ca. 4.38 and a D55°C value of ca. 27 sec. Almost total inhibition was found with sulfhydryl-modifying agents and divalent cations such as Cu2+, Co2+, Hg2+, Ni2+ and Fe2+ at a concentration of 2 mM. The enzyme was active towards β-(1→4) substrates such as p-nitrophenyl-β-D-glucoside, -D-galactoside and -L-rhamnoside, and cellobiose. The sequencing of four …
Comparative analysis of production and purification of homo- and hetero-polysaccharides produced by lactic acid bacteria
2013
2 figuras, 2 tablas
Evaluation of yogurt and various beverages as carriers of lactic acid bacteria producing 2-branched (1,3)-β-D-glucan
2011
8 páginas, 2 figuras, 2 tablas -- PAGS nros. 3271-3278