نتایج جستجو برای: b licheniformis
تعداد نتایج: 900546 فیلتر نتایج به سال:
Bacillus licheniformis was able to utilize gluconate as the sole carbon source as efficiently as Bacillus subtilis did. Southern analysis indicated that B. licheniformis likely possesses only one gnt determinant. The nucleotide sequence (6278 bp) of the B. licheniformis DNA containing the gnt operon was determined, revealing the five complete open reading frames (ORF; genes). The putative produ...
ABSTRACT Background and objectives: Bacillus licheniformis is a potential cause of spoilage in pasteurized products. The aim of this study was to identify and isolate B. licheniformis from commercial pasteurized fruit juices distributed in the West Azarbaijan Province, Iran. Methods: Sixteen fruit juice samples including four apple juice and 12 orange juice samples wer...
The cloned gene coding for Bacillus licheniformis penicillinase (penP) was introduced into Escherichia coli in a heat-inducible lambda Qam vector. After induction, significant amounts of penicillinase were synthesized in the new host. The cellular location of the penicillinase was found to be almost exclusively the outer membrane fraction of E. coli, and virtually no soluble penicillinase was f...
this study was carried out to evaluate the effect of probiotic (bacillus latrospores and bacillus licheniformis) on growth and survival of silver carp larvae (hypophthalmichthys molitrix). rotifers (brachionus plicatilis) were used as live prey vehicle for probiotic transport. they were cultured in sea water with 15 ppt salinity and nannochloropsis oculata microalgae was used as feed. five trea...
AIMS To determine the activity of enterocin AS-48 against ropy-forming Bacillus licheniformis from cider. METHODS AND RESULTS Enterocin AS-48 was tested on B. licheniformis LMG 19409 from ropy cider in MRS-G broth, fresh-made apple juice and in two commercial apple ciders (A and B). Bacillus licheniformis was rapidly inactivated in MRS-G by 0.5 microg ml(-1)AS-48 and in fresh-made apple juice...
Toxin-producing isolates of Bacillus licheniformis were obtained from foods involved in food poisoning incidents, from raw milk, and from industrially produced baby food. The toxin detection method, based on the inhibition of boar spermatozoan motility, has been shown previously to be a sensitive assay for the emetic toxin of Bacillus cereus, cereulide. Cell extracts of the toxigenic B. licheni...
In this study, we characterized the heat shock stimulon of the important industrial microorganism Bacillus licheniformis using DNA microarrays. While sharing a high degree of homology with the closely related model organism Bacillus subtilis, the heat shock stimulon of B. licheniformis exhibited several novel and unexpected features. Most notably, heat shock in B. licheniformis resulted in decr...
Eight Bacillus strains isolated from Sonoran Desert soil were shown to belong to a previously unidentified species, for which the name Bacillus sonorensis sp. nov. is proposed. The type strain is strain L87-10T (= NRRL B-23154T). On the basis of phenotypic and genetic data, B. sonorensis is most closely related to Bacillus licheniformis. B. sonorensis can be distinguished from B. licheniformis ...
Bacterial endospore formers can produce spores that are resistant to many food processing conditions, including heat. Some spores may survive heating processes aimed at production of commercially sterile foods. Recently, it was shown that a spoVA operon, designated spoVA2mob, present on a Tn1546 transposon in Bacillus subtilis, leads to profoundly increased wet heat resistance of B. subtilis sp...
Bacillus licheniformis l-arabinose isomerase (l-AI) is distinguished from other l-AIs by its high degree of substrate specificity for l-arabinose and its high turnover rate. A systematic strategy that included a sequence alignment-based first screening of residues and a homology model-based second screening, followed by site-directed mutagenesis to alter individual screened residues, was used t...
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