This study was conducted to determine the effects of freezing and supplementation of molasses (M), lactic acid bacteria (LAB) and LAB+enzyme mixture on chemical and nutritional composition of sunflower silage (SF). Sunflower crops were harvested (at about 29.2%±1.2% dry matter) and half of fresh sunflower was ensiled alone and half was frozen (F) at -20°C for 7 days. Silage additives were admix...

Lactic acid bacteria (LAB) are frequently encountered inhabitants of the human intestinal tract. A protective layer of mucus covers the epithelial cells of the intestine, offering an attachment site for these bacteria. In this study bioinformatics tools were used to identify and characterize proteins containing one type of mucus-binding domain, called MUB, that is postulated to play an importan...

Lactic acid bacteria (LAB) are incapable of cytochrome synthesis and lack the heme electron transport mechanisms required for efficient oxygen-based metabolism. Consequently, LAB redox activity is flavoenzyme-based and metabolism is fermentative, producing lactic acid, and in many cases, hydrogen peroxide (H2O2). Despite this seeming metabolic limitation, LAB dominate in the normal flora of the...

Apicultural products l ike propolis and pollen have gained increased attention for their therapeutic properties. The aim of this study was to assess antibacterial properties of Egyptian propolis and pollen extracts or their mixtures which were extracted by different ethanol/water concentrations against 6 food borne pathogenic, as well as 4 lac tic acid bacterial (LAB) strains. Antibacterial ac ...

Lactic acid bacteria (LAB) were isolated from different fermented dairy food and identified as Lactobacillus fermentum, Lactobacillus plantarum, Lactobacillus casei and Lactobacillus brevis. The cell free supernatant of the selected Lactic acid bacteria were able to inhibit the growth of all organisms, used in this study (E. coli, Klebsiella, Pseudomonas, Streptococcus, Proteus). The antibiotic...

Lab class on anoxygenic phototrophic bacteria http://www.microbelibrary.org/edzine/ details.asp?id=2016&Lang= This page describes a set of student laboratory exercises for growing and characterizing phototrophic bacteria. Binary cultivation in photobioreactors http://availabletechnologies.pnl.gov/ technology.asp?id=267 This page describes the development of a photobioreactor for use in cultivat...

Mucous membranes of the body are in direct contact with the outside environment and they are colonised by a large number of different bacteria. rough mucous membranes, the organism is in permanent contact with different antigens. Mucous surfaces are protected by many defence mechanisms that ensure a permanent and effective protection. ey include the production of secretory IgA, the production...

It has been found that many bacteriocins from lactic acid bacteria (LAB) are only produced in broth cultures when specific growth conditions are achieved and a dedicated three-component regulatory system, involved in a quorum sensing (QS) mechanism, is switched on. Surprisingly, bacteriocin production in LAB occurs in an apparently constitutive manner on solid media. This study addresses the qu...

The aim of this study was to determine the effects of Lactic Acid Bacteria (LAB) fermentation on the texture and organic acid of pickled cucumbers. Texture and sensory evaluation as well as a microscopic observation were performed to study the textural differences among fresh cucumber, Spontaneous fermentation (SF) cucumber and LAB Inoculating Fermentation (LABIF) cucumber. Accumulation of seve...

Lactic acid bacteria (LAB) are a diverse group of Gram-positive bacteria found in a vast array of environments including dairy products and the human gastrointestinal tract (GIT). In both niches, surface proteins play a crucial role in mediating interactions with the surrounding environment. The sortase enzyme is responsible for covalently coupling a subset of sortase-dependent proteins (SDPs) ...