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Thin-layer chromatography—direct bioautography (TLC—DB) followed by liquid chromatography—tandem mass spectrometry (LC—MS/MS) was used for screening and tentative identification of the antibacterial constituents of Salvia officinalis L. ethanol extract. Seven bacterial strains were used as test organisms, both pathogenic and nonpathogenic, that is, Staphylococcus aureus, methicillin-resistant S. aureus (MRSA), Staphylococcus epidermidis, Micrococcus luteus, Bacillus subtilis, luminescence gene-tagged Pseudomonas syringae pv. maculicola, and naturally luminescent marine bacterium Aliivibrio fischeri. Eight fractions with the widest antimicrobial spectrum were detected using TLC—DB, isolated by semi-preparative TLC, and subjected to LC—MS/MS analyses. Finally, five bioactive components were tentatively identified, based on their fragmentation pattern, such as salvigenin, cirsimaritin, rosmanol, carnosic acid, and 12-O-methyl carnosic acid.

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gossypol in C. tropicalis culture. This method could provide a rapid and reliable assay to screen the strains of the bacterium for the researchers and the application in the solid fermentation in feed industry. The acetone extraction and gradient elution

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( Propionibacterium acnes : a normal gram-anaerobic bacterium that is parasitic on acne) [ 2, 3 ]. Among them, P. acnes shows a vital role in the occurrence of acne. According to incomplete statistics, by 2015, acne affected 633 million people worldwide and became

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., 2007 ). However, elimination of this bacterium from ready-to-eat foods and food processing equipment is difficult. The main reason is because of the ability of this bacterium to form biofilms that protect it from stresses in food processing environments

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Progress in Agricultural Engineering Sciences
Authors: Khabat Noori Hussein, Tímea Molnár, Richard Pinter, Adrienn Toth, Emna Ayari, Laszlo Friedrich, Istvan Dalmadi and Gabriella Kiskó

fungi has increased. This is prevalent in developing countries, but according to a 2012 statement by the WHO (2012) , it can be a problem for all humans worldwide. Pseudomonas lundensis , a gram-negative bacterium that is generally characterized by a

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Bt maize expresses Cry endotoxin proteins derived from the soil bacterium Bacillus. Berliner Thuringiensis (Bt), which can significantly reduce the economic damage caused by the pest. Advantages of Bt maize include effective pest control ( Storer et

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