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Journal articles on the topic 'Bacillus and Yeasts'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Maknunah, Jauharoh, and Meity Suradji Sinaga. "Eksplorasi dan Karakterisasi Khamir dan Bakteri sebagai Agens Antagonis terhadap Penyebab Penyakit Blas pada Padi." Jurnal Fitopatologi Indonesia 14, no. 3 (2018): 83. http://dx.doi.org/10.14692/jfi.14.3.83.

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Exploration of Yeasts and Bacteria as Antagonist Agent of Rice Blast PathogenBlast disease (Pyricularia oryzae) is a major disease of rice that causes 61% yield losses. An alternative way to control the disease is applying antagonistic agents, both yeasts and bacteria. This study was aimed to obtain yeast and bacterial isolates that can be used as antagonistic agents to effectively control blast disease. Yeasts and bacteria were isolated from the leaves of Digitaria sp., Panicum sp., and Pennisetum sp.. The isolates of yeasts and bacteria were screened following hypersensitive test on tobacco

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2

Yurliasni, Yurliasni. "Aktivitas Antimikroba Khamir Asal Dadih (susu kerbau fermentasi) Terhadap Beberapa Bakteri Patogen." Jurnal Agripet 10, no. 1 (2010): 19–24. http://dx.doi.org/10.17969/agripet.v10i1.633.

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Antimicroba activity of yeast dadih (buffalo milk fermentation) origin on pathogenic bacteriaABSTRACT. Research was carried out to study the effect of antimicrobial activity of yeast found in dadih. Yeasts chosen were isolated from dadih (traditionally buffalo milk fermentation). The objective is to know the ability of yeast to inhibit the growth of pathogenic bacteria in milk. They were Candida curiosa, Brettanomyces custersii, and Kluyveromices lactis. Kluy. lactis has strong antimicrobial on Bacillus subtilis with zone of inhibition ± 5mm, C. curiosa on E.coli (5mm) and C. curiosa and Brett

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3

B. C., Obasi, Whong C. M. Z., Ameh J. B., and Ella E. E. "Microbiological Quality Assessment of Commercially and Laboratory Prepared Orange Juice." Journal of Biotechnology Research, no. 52 (February 15, 2019): 19–27. http://dx.doi.org/10.32861/jbr.52.19.27.

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Orange juice has become one of the most widely accepted natural beverages due to its invigorating flavours, source of quick energy in the form of natural sugars and its nutrient which support the growth of acid tolerant bacteria, yeasts and moulds. Present investigation was conducted to study the microbiological examination of commercially and freshly prepared orange juices. Freshly prepared orange juices were pasteurised, carbonated, concentrated and chemically treated with a preservative (sodium metabisulphite) and stored under, freezer, refrigeration and ambient temperature for 90 days. The

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CONTE, A., B. SPERANZA, M. SINIGAGLIA, and M. A. DEL NOBILE. "Effect of Lemon Extract on Foodborne Microorganisms." Journal of Food Protection 70, no. 8 (2007): 1896–900. http://dx.doi.org/10.4315/0362-028x-70.8.1896.

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A quantitative investigation was conducted on the antimicrobial effect of lemon extract against some food spoilage microorganisms: yeasts, Bacillus species, and lactic acid bacteria. Growth kinetics and dose-response profiles were determined from experimental data obtained with a suitable macrodilution methodology based on a turbidimetric technique. Growth and no-growth status of microbial suspensions were expressed in terms of noninhibitory concentration (NIC) and MIC. Lemon extract was effective in inhibiting the growth of the investigated vegetative cells and spores of microorganisms; effec

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Kılıç Kanak, Eda, and Suzan Öztürk Yılmaz. "Probiyotik Mayalar ve Probiyotik Gıdalarda Mayaların Rolü." Turkish Journal of Agriculture - Food Science and Technology 7, no. 9 (2019): 1268. http://dx.doi.org/10.24925/turjaf.v7i9.1268-1274.2170.

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Probiotics are defined as live microorganisms that provide beneficial effects when consumed in sufficient quantities. Currently available probiotics are bacteria such as Lactobacillus, Bifidobacterium and Bacillus. In recent years, yeast has presented great potential for the development of new probiotics. Saccharomyces cerevisiae var. boulardii is the only yeast that has been recognized and characterized as probiotic until today. This raises the question of whether other yeast species have probiotic properties. Recent investigations show that some species with probiotic evidence are Kluyveromy

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Stirling, AM, LM Coates, KG Pegg, and AC Hayward. "Isolation and selection of bacteria and yeasts antagonistic to preharvest infection of avocado by Colletotrichum gloeosporioides." Australian Journal of Agricultural Research 46, no. 5 (1995): 985. http://dx.doi.org/10.1071/ar9950985.

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Bacteria and yeasts were isolated from leaves, flowers and fruit of avocado trees that had not been sprayed with pesticides for several years. Of the 1050 microorganisms isolated, 37% inhibited mycelial growth of Colletotrichum gloeosporioides on potato dextrose agar. Many of these organisms also significantly reduced spore germination of the fungus on cellophane overlaying weak sugars agar and a greater proportion of yeasts than bacteria were more effective. Some bacteria and yeasts also reduced spore germination of the pathogen on avocado leaf disks. The predominant group of suppressive bact

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Quintana-Castro, Rodolfo, Montserrat Ramírez-Suero, Fernando Moreno-Sanz, and Mario Ramírez-Lepe. "Expression of thecry11Agene ofBacillus thuringiensisssp.israelensisinSaccharomyces cerevisiae." Canadian Journal of Microbiology 51, no. 2 (2005): 165–70. http://dx.doi.org/10.1139/w04-126.

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The complete cry11A region gene of Bacillus thuringiensis ssp. israelensis was fused in frame to the 3' end of the GST gene under the control of the Saccharomyces cerevisiae HXK1 promoter. The fusion protein GST-cry11A was expressed in S. cerevisiae strain AMW13C+. The fusion gene GST-cry11A was expressed when yeast cells were grown on galactose and a nonfermentable medium containing ethanol as carbon and energy source. When the cells were grown in glucose, mannose, fructose, or glycerol as carbon sources, the GST-cry11A gene was repressed. Thus, a regulated expression in accordance with the r

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8

Zhang, Tie Hua, Xin Yu Zhang, Mu Tian, Shu Ning Zhong, and Zhi Yang Du. "Optimization of Mixed Fermentation Conditions by Mixed Culture of Kefir and Bacillus." Applied Mechanics and Materials 618 (August 2014): 303–10. http://dx.doi.org/10.4028/www.scientific.net/amm.618.303.

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Kefir is a kind of fermented milk that is produced by inoculating Kefir grains into milk, mainly consisting of bacteria and yeasts. Bacillus and their metabolites also have found some biotechnological applications in many aspects. The aim of the present study was to evaluate the mixed fermentation conditions by kefir and Bacillus. The results showed that kefir and Bacillus could be mixed fermentation, the suggested optimum fermentation conditions are the following: inoculum size was 4 mL of mixed fermentation agent for per 100 mL medium, the ratio to kefir and Bacillus is 2:1, fermentation tem

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Inglis, G. D., L. J. Yanke, L. M. Kawchuk, and T. A. McAllister. "The influence of bacterial inoculants on the microbial ecology of aerobic spoilage of barley silage." Canadian Journal of Microbiology 45, no. 1 (1999): 77–87. http://dx.doi.org/10.1139/w98-207.

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The aerobic decomposition of barley silage treated with two inoculants (LacA and LacB) containing mixtures of Lactobacillus plantarum and Enterococcus faecium was investigated over a 28-day period. Initially, yeast and bacterial populations were larger in silage inoculated with LacA than in silage treated with LacB or water alone (control). Differences in the succession of yeasts in silage treated with LacA were observed relative to the other two treatments. From silage treatment with LacA, Issatchenkia orientalis was the most prevalent yeast taxon over all of the sample times, and the filamen

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Merghache, D., Z. Boucherit-Otmani, I. A. El Haci, I. Chikhi, and K. Boucherit. "Inhibitory Effect of Quercus ilex Wood Ash on the Growth of Pathogenic Microorganisms." Phytothérapie 16, S1 (2018): S269—S272. http://dx.doi.org/10.3166/phyto-2018-0071.

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This study was conducted to determine the antimicrobial (antibacterial and antifungal) activity of green oak (Quercus ilex) wood ash from Beni Snous region (Tlemcen, Algeria). For the evaluation of antimicrobial potency, we tested the effect of different ash concentrations on reference bacteria (Staphylococcus aureus, Enterococcus faecalis, Bacillus subtilis, Bacillus cereus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Enterobacter cloacae, and Proteus mirabilis) and reference yeasts (Candida albicans ATCC 10231 and Candida albicans 444IP). The antibacterial activity test

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Kasfi, Kazem, Parissa Taheri, Behrooz Jafarpour, and Saeed Tarighi. "Identification of epiphytic yeasts and bacteria with potential for biocontrol of grey mold disease on table grapes caused by Botrytis cinerea." Spanish Journal of Agricultural Research 16, no. 1 (2018): e1002. http://dx.doi.org/10.5424/sjar/2018161-11378.

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The objective of this study was to identify grapevine epiphytic yeasts and bacteria for biocontrol of Botrytis cinerea on grapes. Antagonistic yeasts and bacteria were isolated from the epiphytic flora associated with grape berries and leaves cv. ‘Thompson seedless’ from vineyards in Iran and identified by sequencing the conserved genomic regions. A total of 130 yeast and bacterial isolates from the surface of grapevine were screened in vitro for determining their antagonistic effect against B. cinerea and used to control postharvest gray mold. Among the 130 isolates, five yeasts and four bact

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Alcarde, André Ricardo, Júlio Marcos Melges Walder, and Jorge Horii. "Fermentation of irradiated sugarcane must." Scientia Agricola 60, no. 4 (2003): 677–81. http://dx.doi.org/10.1590/s0103-90162003000400011.

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Bacillus and Lactobacillus are bacteria that usually contaminate the ethanolic fermentation by yeasts and may influence yeast viability. As microorganisms can be killed by ionizing radiation, the efficacy of gamma radiation in reducing the population of certain contaminating bacteria from sugarcane must was examined and, as a consequence, the beneficial effect of lethal doses of radiation on some parameters of yeast-based ethanolic fermentation was verified. Must from sugarcane juice was inoculated with bacteria of the genera Bacillus and Lactobacillus. The contaminated must was irradiated wit

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13

Rikhvanov, Eugene G., Nina N. Varakina, Dmitri Yu Sozinov, and Viktor K. Voinikov. "Association of Bacteria and Yeasts in Hot Springs." Applied and Environmental Microbiology 65, no. 9 (1999): 4292–93. http://dx.doi.org/10.1128/aem.65.9.4292-4293.1999.

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ABSTRACT The thermophilic bacterium Bacillus sp. strain TB-1 was isolated in association with the yeast Debaryomyces vanrijifrom hot springs at 46°C. It was shown that TB-1 excreted thiamine into the culture broth, which not only promoted D. vanrijigrowth in mixed culture but also increased the maximal temperature for yeast growth.

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14

Hammami, Rania, Maroua Oueslati, Marwa Smiri, et al. "Epiphytic Yeasts and Bacteria as Candidate Biocontrol Agents of Green and Blue Molds of Citrus Fruits." Journal of Fungi 8, no. 8 (2022): 818. http://dx.doi.org/10.3390/jof8080818.

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Overall, 180 yeasts and bacteria isolated from the peel of citrus fruits were screened for their in vitro antagonistic activity against Penicillium digitatum and P. italicum, causative agents of green and blue mold of citrus fruits, respectively. Two yeast and three bacterial isolates were selected for their inhibitory activity on mycelium growth. Based on the phylogenetic analysis of 16S rDNA and ITS rDNA sequences, the yeast isolates were identified as Candida oleophila and Debaryomyces hansenii while the bacterial isolates were identified as Bacillus amyloliquefaciens, B. pumilus and B. sub

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15

Chen, Jingwei, Kaili Wang, Esa Abiso Godana, Dhanasekaran Solairaj, Qiya Yang, and Hongyin Zhang. "Construction of Composite Microorganisms and Their Physiological Mechanisms of Postharvest Disease Control in Red Grapes." Foods 14, no. 3 (2025): 408. https://doi.org/10.3390/foods14030408.

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Red grapes often suffer from postharvest diseases like blue mold and black mold caused by Penicillium expansum and Aspergillus niger. Biological control using beneficial yeasts and bacteria is an effective method to manage these diseases. Rhodotorula sp. and Bacillus sp. are effective microorganisms for the control of postharvest diseases of red grapes. This study combined two yeast strains (Rhodotorula graminis and Rhodotorula babjevae) and two bacterial strains (Bacillus licheniformis and Bacillus velezensis) to investigate their biological control effects on major postharvest diseases of re

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16

Yu, Woon-Jong, Dawoon Chung, Seung Seob Bae, Yong Min Kwon, Eun-Seo Cho, and Grace Choi. "Characterization and Biological Activities of Yeasts Isolated from Marine Environments." Microbiology Research 14, no. 4 (2023): 1984–99. http://dx.doi.org/10.3390/microbiolres14040134.

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Marine yeasts have versatile applications in the industrial, medical, and environmental fields. However, they have received little attention compared to terrestrial yeasts and filamentous fungi. In this study, a phylogenetic analysis of 11 marine-derived yeasts was conducted using internal transcribed spacers and nuclear large subunit rDNA, and their bioactivities, such as antioxidant, antibacterial, and tyrosinase inhibition activities, were investigated. The 11 marine-derived yeasts were identified to belong to seven species including Geotrichum candidum, Metschnikowia bicuspidata, Papiliotr

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17

Yılmaz, Meral, Ayşen Özdemir Türk, Turgay Tay, and Merih Kıvanç. "The Antimicrobial Activity of Extracts of the Lichen Cladonia foliacea and Its (–)-Usnic Acid, Atranorin, and Fumarprotocetraric Acid Constituents." Zeitschrift für Naturforschung C 59, no. 3-4 (2004): 249–54. http://dx.doi.org/10.1515/znc-2004-3-423.

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The antimicrobial activity of the chloroform, diethyl ether, acetone, petroleum ether, and ethanol extracts of the lichen Cladonia foliacea and its (-)-usnic acid, atranorin, and fumarprotocetraric acid constituents against 9 bacteria and fungi has been investigated. The extracts and pure compounds alone were found active against the same bacteria and the same yeasts. Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Streptococcus faecalis, Proteus vulgaris, Listeria monocytogenes, Aeromonas hydrophila, Candida albicans, and Candida glabrata growth were inhibited. In addition, the MIC

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BROVKO, LUBOV Y., ANN MEYER, ARVINDER S. TIWANA, et al. "Photodynamic Treatment: A Novel Method for Sanitation of Food Handling and Food Processing Surfaces." Journal of Food Protection 72, no. 5 (2009): 1020–24. http://dx.doi.org/10.4315/0362-028x-72.5.1020.

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The photodynamic bactericidal effect of the photoactive dyes acriflavine neutral, rose bengal, phloxine B, and malachite green (oxalate salt) at concentrations of 5 to 5,000 μg/ml against two gram-negative strains (Escherichia coli LJH 128 and Salmonella Typhimurium C1058), two gram-positive strains (Bacillus sp. C578 and Listeria monocytogenes LJH 375), and yeast (Saccharomyces cerevisiae C1172) was investigated. Incubation of the investigated bacteria with acriflavine neutral under illumination resulted in a significant reduction in cell numbers compared with dark incubation. Rose bengal cau

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Koskella, J., and G. Stotzky. "Larvicidal toxins fromBacillusthuringiensissubspp.kurstaki,morrisoni(straintenebrionis), andisraelensishave no microbicidal or microbiostatic activity against selected bacteria, fungi, and algae in vitro." Canadian Journal of Microbiology 48, no. 3 (2002): 262–67. http://dx.doi.org/10.1139/w02-005.

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The insecticidal toxins from Bacillus thuringiensis subspp. kurstaki (antilepidopteran), morrisoni strain tenebrionis (anticoleopteran), and israelensis (antidipteran) did not affect the growth of a variety of bacteria (8 gram-negative, 5 gram-positive, and a cyanobacterium), fungi (2 Zygomycetes, 1 Ascomycete, 2 Deuteromycetes, and 2 yeasts), and algae (primarily green and diatoms) in pure and mixed culture, as determined by dilution, disk-diffusion, and sporulation assays with purified free and clay-bound toxins. The insecticidal crystal proteins from B. thuringiensis subspp. kurstaki and is

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20

Xu, Xin, Jun Rui Wu, Ling Shuai Meng, and Ri Na Wu. "Determination on Microbial and Total Flavonoids of Commercially Available Fermented Soybean Paste." Advanced Materials Research 864-867 (December 2013): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.56.

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There are 6 samples of soybean paste which collected from market will be investigated. The results show that the total counts of lactic acid bacteria in the soybean paste samples was average 105-107cfu·g-1, but the total counts of molds and yeasts in some samples was just 103 cfu·g-1. And the total counts of bacillus in samples was over 105 cfu·g-1 .Compared with nature fermented soybean paste, the counts of molds and yeasts was down. The results indicate that the microbiological compositions of the soybean paste samples maybe changed. There were less total contents of flavonoids in the soybea

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Sviridenko, Galina, M. Zakharova, and Evgeniya Uskova. "Microbiological Risks of Cheese Color Defects." Cheese- and buttermaking, no. 3 (September 17, 2024): 33–43. http://dx.doi.org/10.21603/2073-4018-2024-3-3.

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Aerobic Bacillus bacteria, yeasts, and micrococci are pigment-forming microorganisms responsible for color defects in cheese production. The article describes their environment, industry-related characteristics, types of defects they cause, and various color violations in commercial cheeses. The research featured domestic cheeses with yellow and red surface spots that appeared during industrial ripening and storage. Pigment-forming microorganisms developed on cheese surface at a low ripening temperature, high concentration of table salt, and critically low oxygen. Pigment-forming microflora pr

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RESTUCCIA, CRISTINA, FRANCESCO GIUSINO, FABIO LICCIARDELLO, CINZIA RANDAZZO, CINZIA CAGGIA, and GIUSEPPE MURATORE. "Biological Control of Peach Fungal Pathogens by Commercial Products and Indigenous Yeasts." Journal of Food Protection 69, no. 10 (2006): 2465–70. http://dx.doi.org/10.4315/0362-028x-69.10.2465.

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The potential use of the commercial biocontrol products Serenade (Bacillus subtilis QST-713) and Trichodex (Trichoderma harzianum Rifai strain T39) to inhibit the postharvest pathogenic molds Penicillium crustosum and Mucor circinelloides was investigated. Both products exhibited antagonistic activity in vitro against the pathogens, reducing their growth at different levels. In addition, epiphytic yeasts isolated from peaches were identified as Candida maltosa, Pichia fermentans, and Pichia kluyveri by PCR–restriction fragment length polymorphism of internal transcribed spacer regions and scre

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23

Ho, Hoa T. K. "Quantities and antibiotic resistance of microorganisms in some microbial products for animals in Vietnam." Journal of Agriculture and Development 20, no. 03 (2021): 26–31. http://dx.doi.org/10.52997/jad.4.03.2021.

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The aims of the study were to look into the quantities of live beneficial microorganisms and antibiotic resistance of bacterial strains in several probiotic products used for food animals in the market. Ten probiotic products that claim to contain beneficial bacteria and fungi were examined. Eight products are said on the label to contain Lactobacillus spp., nine contain Bacillus spp., five contain yeasts and two have molds. The results showed that eight products did not have the microbial quantities or/and composition of microorganisms as saying on their labels. Of eight products which claim

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MICU, Georgiana, Oana Alina BOIU-SICUIA, Aglaia BURLACU(POPA), Florentina ISRAEL-ROMING, and Calina Petruta CORNEA. "RESEARCHES ON THE QUANTIFICATION OF L-ASPARAGINASE PRODUCED BY MICROORGANISMS." AgroLife Scientific Journal 10, no. 1 (2021): 147–53. http://dx.doi.org/10.17930/agl2021116.

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L-asparaginase is an enzyme that is mainly used in the medical industry to treat various cancers and in the food industry to reduce acrylamide in starch-containing foods. In order to be used successfully, L-asparaginase must have a certain concentration and a certain purity to give the best results and minimize side effects in the medical industry. The aim of this paper was the screening of different strains of Bacillus, Streptomyces, yeasts and bacterial endophytes for L-asparaginase biosynthesis, and to highlight the methods used to determine the level of L-asparaginase. Several bacterial st

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Janowska, Sara, Sylwia Andrzejczuk, Piotr Gawryś, and Monika Wujec. "Synthesis and Antimicrobial Activity of New Mannich Bases with Piperazine Moiety." Molecules 28, no. 14 (2023): 5562. http://dx.doi.org/10.3390/molecules28145562.

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A series of novel Mannich bases were designed, synthesized, and screened for their antimicrobial activity. The target compounds were synthesized from 4-(3-chlorophenyl)-5-(3-fluorophenyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione and different piperazine derivatives. The structures of the products were confirmed by 1H and 13C NMR and elemental analysis. The activity of piperazine derivatives against bacteria (Gram-positive: Staphylococcus epidermidis, Staphylococcus aureus, Micrococcus luteus, Bacillus cereus, and Bacillus subtilis; Gram-negative: Escherichia coli, Pseudomonas aeruginosa, Klebsie

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San Martin, David, Jone Ibarruri, Bruno Iñarra, et al. "Valorisation of Brewer’s Spent Yeasts’ Hydrolysates as High-Value Bioactive Molecules." Sustainability 13, no. 12 (2021): 6520. http://dx.doi.org/10.3390/su13126520.

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Brewer’s spent yeast (BSY) is produced by the beer industry and has high nutritional value and great potential for producing high-value molecules, such as peptides, for nutraceutical, food and feed applications. In the present research, Flavourzyme® and Protamex® enzymes were selected for protein hydrolysis based on previous studies. The optimum conditions for the enzymatic hydrolysis were defined by response surface methodology (RSM) by the Box–Behnken design composed of four variables: temperature, pH, enzyme dosage and time. Protein content, hydrolysis degree and the anti-microbial and anti

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Yulinery, Titin, and Ratih M.Dewi. "PREPARASI DEINOCOCCUS RADIODURANS DAN KHAMIR DALAM MATERIAL KECAP L-DRYING SEBAGAI BAHAN UJI PROFISIENSI." Jurnal Teknologi Lingkungan 13, no. 1 (2016): 93. http://dx.doi.org/10.29122/jtl.v13i1.1409.

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Tes kemampuan adalah salah satu kegiatan penting dalam pengendalian mutu dan jaminan kualitas mikrobiologi laboratorium untuk mengukur kompetensi analis dan analisis uji profisiensi membutuhkan persiapan Model mikroorganisme adalah kualitas standar dan validitas. Mikrobiologi uji kualitas produk kedelai utama diarahkan pada kehadiran Saccharomyces cerevisiae ragi (S. cerevisiae), S. Bailli, S. rouxii dankontaminan bakteri seperti Bacillus dan Deinococcus. Jenis ragi dan bakteri yang terlibat dalam proses dan dapat menjadi salah satu parameter kualitas penting dalam persiapan yang dihasilkan. J

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Meneghin, Maria Cristina, Vanda Renata Reis, and Sandra Regina Ceccato-Antonini. "Inhibition of bacteria contaminating alcoholic fermentations by killer yeasts." Brazilian Archives of Biology and Technology 53, no. 5 (2010): 1043–50. http://dx.doi.org/10.1590/s1516-89132010000500006.

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The aim of this work was to study the in vitro antibacterial activity possessed by killer yeast strains against bacteria contaminating alcoholic fermentation (Bacillus subtilis, Lactobacillus plantarum, Lactobacillus fermentum and Leuconostoc mesenteroides), in cell X cell and cell X crude toxin preparations. The bacteria were not inhibited by any S. cerevisiae killer strains (5 out of 11). The inhibition caused by two crude toxin preparations (Trichosporon figueirae and Candida sp) against L. plantarum was surprisingly high but not in the same extent for B. subtilis, especially with three kil

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Koval, Iryna. "THE MAIN TYPES OF MICROORGANISMS IN NATURAL AND WASTEWATER OF THE LVIV REGION." Technogenic and Ecological Safety, no. 16(2/2024) (November 28, 2024): 41–45. https://doi.org/10.52363/2522-1892.2024.2.6.

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The microflora of natural (lake) water and industrial wastewater was investigated and the initial number of microorganisms in these waters was calculated. The main features of microorganisms identified during the process of their identification are indicated. Morphological, physiological and cultural characteristics of microorganisms were investigated by deep seeding of the samples of the investigated waters of the Lviv region on the nutrient media in the Petri dishes and by microscopy of preparations with lifelong staining. The growth pattern of colonies of microorganisms on meat-peptone agar

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Klaus, Anita, Damir Beatovic, Miomir Niksic, Slavica Jelacic, Viktor Nedovic, and Tanja Petrovic. "Influence of ethereal oils extracted from Lamiaceae family plants on some pathogen microorganisms." Zbornik Matice srpske za prirodne nauke, no. 115 (2008): 65–74. http://dx.doi.org/10.2298/zmspn0815065k.

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As pathogen microorganisms can be found in different kinds of food, using of natural antimicrobial compounds, like ethereal oils, could be important in the preservation of different groceries. To evaluate antimicrobial activity of ethereal oils extracted from Lamiaceae family plants - Rosmarinus officinalis L., Thymus vulgaris L., Majorana hortensis M o e n c h, and Salvia officinalis L screening of their effects against food borne bacteria Staphylococcus aureus, Enterococcus faecalis, Proteus mirabilis, Salmonella enteritidis, Pseudomonas aeruginosa, Bacillus cereus, Bacillus subtilis, Escher

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Falih Hassan, Khalid, Ahmed Aidan Al-Hussieny, Elaff safa Al Deen Hassan, and Ruah Abd Almunim. "Studying the efficiency of the multiple biofilters in the reduction of pollutants from wastewater." Bionatura 7, no. 2 (2022): 1–7. http://dx.doi.org/10.21931/rb/2022.07.02.55.

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The Microorganisms: yeast Sporobolomyces yunnanensis, Rhodotorula mucilaginosa and Kluyveromyces marxianusin growth of 184× 106 ± 15 cell\ml, and bacteria Pseudomonas aeruginosa and Bacillus cereus in the growth of 9 – 15× 108 ± 5 cell\ml, and algae Chlorella vulgaris in the growth of 45 × 105 ± 5 cell\ ml were selected as a bio filter to reduce organic and nonorganic pollutants from wastewater by COD, TOC, TN and TP concentrations of 455, 151, 9.5 and 31 ppm in treatment period 4, 6 and 18 hr. and pH of 7-8 in 25 Co as a Batch culture system. The yeasts showed ability to reduce COD concentrat

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Kántor, Attila, Ján Mareček, Eva Ivanišová, Margarita Terentjeva, and Miroslava Kačániová. "Microorganisms of Grape Berries." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 71, no. 6 (2017): 502–8. http://dx.doi.org/10.1515/prolas-2017-0087.

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Abstract Grape surface is an unstable habitat that changes greatly according to the stage of grape ripening. Different bacteria and yeasts can colonise the surface of grape berry and the diversity of microorganisms depends on the stage of ripening, pesticide application and health condition. The aim of this study was to study the microflora of the surface of grape berries. Altogether, 19 grape samples from Slovakia were collected. The spread plate method was applied and a 100 μL inoculum of each dilution (10−2, 10−3) was plated on TSA, MEA, and MRS agar for isolation of microorganisms from gra

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Kaval, Nesrin, Nilgün Öncül, and Zeliha Yıldırım. "Tokat Bez Sucuğunun Mikrobiyolojik Kalitesinin İncelenmesi." Turkish Journal of Agriculture - Food Science and Technology 8, no. 12 (2020): 2683–94. http://dx.doi.org/10.24925/turjaf.v8i12.2683-2694.3878.

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In this study, the microbiological quality of traditionally produced Bez Sucuk in Tokat and its vicinity was investigated. For this purpose, 30 Bez Sucuk samples obtained from butchers, producers of Bez Sucuk, were analyzed for total count of mesophilic aerobic bacteria, lactic acid bacteria, yeasts-moulds, total coliform, fecal coliform, Staphylococcus aureus, Bacillus cereus, and Cl. perfringens. Also, the presence of Escherichia coli O157:H7, Listeria monocytogenes and Salmonella spp. were investigated in all samples. pH and water activity of the samples were determined. As the result of th

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Ezeonuegbu, B. A., C. C. Nwankwo, and I. B. Ashiru. "Potentials of Bacteria and Fungi Isolated from Oil-polluted Soil in Biodegradation of Perfluorononanoic Acid." Journal of Applied Sciences and Environmental Management 29, no. 5 (2025): 1445–55. https://doi.org/10.4314/jasem.v29i5.8.

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The objective of this paper is to investigate the potential of bacteria and fungi isolated from oil-polluted soil in the biodegradation of perfluorononanoic acid (PFNA) using appropriate standard techniques. Data obtained show that significant quantities of the physical and chemical characteristics needed for microbial growth were present in the soil. The soil samples had the highest mean total heterotrophic bacterial and fungal counts of 10.9×105 cfu/g and 7.18×105 sfu/g, respectively. The bacteria identified were Bacillus cereus, Acinetobacter spp., Klebsiella spp., Pseudomonas putida, Serra

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Abareethan, M. "ISOLATION AND BIOCHEMICAL CHARACTERIZATION OF BIOSURFACTANT FROM SOIL SAMPLE." International Journal of Zoology and Applied Biosciences 2, no. 3 (2017): 137–44. https://doi.org/10.5281/zenodo.1311746.

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The present study aimed to isolate and characterize bio surfactants bacteria. Biosurfactants are surface active compound like chemical surfactants but synthesized by microbes like bacteria, fungi and yeast. Biosurfactants comprise the properties of dropping surface tension, stabilizing emulsions, promoting foaming and are usually non-toxic and biodegradable. Bio surfactant showed diversity, flexibility in operation, and more ecofriendly than chemical surfactant. Bio surfactants are thermotolerant, halo bacteria and oil degrading in nature, which help in various industrial applications in near

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Prágai, Zoltán, and Colin R. Harwood. "YsxC, a Putative GTP-Binding Protein Essential for Growth of Bacillus subtilis 168." Journal of Bacteriology 182, no. 23 (2000): 6819–23. http://dx.doi.org/10.1128/jb.182.23.6819-6823.2000.

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ABSTRACT YsxC is a member of a family of GTP-binding proteins carried by a diverse range of organisms from bacteria to yeasts, plants, and humans. To resolve the issue of whether ysxC of Bacillus subtilis is essential for growth, we attempted to construct mutants in which ysxC was either inactivated or placed under the control of an inducible promoter. Viable mutants were obtained only in the latter case, and these were inducer dependent, demonstrating unambiguously that ysxC is an essential gene.

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Cvetkovic, Dragoljub, Sinisa Markov, and Aleksandra Velicanski. "Antimicrobial activity of kombucha made from Rtanj tea." Chemical Industry 59, no. 9-10 (2005): 248–53. http://dx.doi.org/10.2298/hemind0510248c.

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Kombucha is a beverage with special therapeutic properties produced by the metabolic activity of yeasts and acetic acid bacteria in sweetened black tea (traditional cultivation medium). The antimicrobial activity of kombucha (for consumption) made from black tea and Rtanj tea, as well as particular control samples, was examined by the modified disc diffusion method. Salmonella enteritidis, Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa Staphylococcus aureus, Bacillus sp., Sarcina lutea, Penicillium aurantiogriseum, Aspergilus niger, Aspergilus flavus, Rhodotorula sp. Candida pseud

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Lee, Sang-Hoon, Heon-Sang Jeong, and Tae-Su Kang. "Antimicrobial and Antioxidative Activities of Hot Water Extracts from Heat-Air Drid Rhus verniciflua Stokes." Food Engineering Progress 17, no. 1 (2013): 1–7. http://dx.doi.org/10.13050/foodengprog.2013.17.1.1.

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In this study, antimicrobial and antioxidative activities were investigated using the hot water extracts of Rhus verniciflua Stokes (RVS) in order to develop RVS as a natural antimicrobial and antioxidative material. The antimicrobial activity was not found against five strains of yeasts (Saccharomyces cerevisiae, Saccharomyces pastorianus, Torulaspora delbrueckii, Zygosaccharomyces rouxii, and Zygosaccharomyces bailii) while the activity was confirmed against five strains of bacteria (Bacillus subtilis, Staphylococcus aureus, Bacillus licheniformis, Escherichia coli, and Pseudomonas aeruginos

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Purwadaria, Tresnawati, I. Putu Kompiang, Jinadasa Darma, Supriati ., and Emi Sudjatmika. "Isolation and Screening of Microbes for Poultry Probiotics and Their Growth on Different Sugar Resources." Jurnal Ilmu Ternak dan Veteriner 8, no. 2 (2012): 76–83. https://doi.org/10.14334/jitv.v8i2.376.

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The microorganism used as probiotics must be bio-safety, could be cheaply and easily produced, and suitable with the environment of the digestive track. Isolation was carried out from commercial culture (containing mixture of Bacillus spp.), digestive tract (proventriculus, small intestine and large intestine) of local and broiler chickens, and commercial yoghurts (fermented milk). Neutral and acidic nutrient agars (NA) were used as the media at room temperature and in the aerobic or anaerobic conditions. Separate colonies were isolated, stained with Gram and spore staining and observed under

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Zhong, Yixin, Yuke Zou, Zimeng Zheng, et al. "Impact of Inoculating with Indigenous Bacillus marcorestinctum YC-1 on Quality and Microbial Communities of Yibin Yacai (Fermented Mustard) during the Fermentation Process." Foods 11, no. 22 (2022): 3593. http://dx.doi.org/10.3390/foods11223593.

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Bacillus species play an important role in improving the quality of some fermented foods and are also one of the dominant bacteria in Yibin Yacai (fermented mustard). However, little is known about their effects on the quality of Yibin Yacai. Here, the effect of Bacillus marcorestinctum YC-1 on the quality and microbial communities of Yibin Yacai during the fermentation process was investigated. Results indicated that the inoculation of Bacillus marcorestinctum YC-1 promoted the growth of Weissella spp. and Lactobacillus spp. and inhibited the growth of pathogens, accelerating the synthesis of

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Cavalcanti, Vytória Piscitelli, Neilton Antonio Fiusa Araújo, Natália Bernardes Machado, et al. "Yeasts and Bacillus spp. as potential biocontrol agents of Sclerotinia sclerotiorum in garlic." Scientia Horticulturae 261 (February 2020): 108931. http://dx.doi.org/10.1016/j.scienta.2019.108931.

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Lara-Capistran, Liliana, Ramon Zulueta-Rodriguez, Thelma Castellanos-Cervantes, Juan J. Reyes-Perez, Pablo Preciado-Rangel, and Luis G. Hernandez-Montiel. "Efficiency of Marine Bacteria and Yeasts on the Biocontrol Activity of Pythium ultimum in Ancho-Type Pepper Seedlings." Agronomy 10, no. 3 (2020): 408. http://dx.doi.org/10.3390/agronomy10030408.

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Ancho-type pepper (Capsicum annuum L.) is a crop susceptible to Pythium ultimum, which has already been controlled with synthetic fungicide applications; however, marine antagonist microorganisms could be an alternative source of control. The efficiency in vitro and in vivo of marine bacteria and yeasts was determined against P. ultimum. The inhibition of the radial growth of P. ultimum was quantified in vitro by the bacteria Stenotrophomonas rhizophila KM01 and KM02; Bacillus subtilis RBM01 and RBM02, B. amyloliquefaciens 2RLBF and 3R4CF; and Pseudomonas spp. 2R6BF and 2RE9CF, as well as the

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İlkimen, Halil, and Aysel Gülbandılar. "Synthesis, characterization, anti-microbial activity studies of salicylic acid and 2-aminopyridine derivatives salts and their Cu(II) complexes." Journal of Scientific Reports-A, no. 056 (March 31, 2024): 94–104. http://dx.doi.org/10.59313/jsr-a.1401073.

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Four salts (1-4) obtained between salicylic acid (H2salic) and 2-amino-Xpyridine {X = (2ap), 3-methyl (2a3mp), 4-methyl (2a4mp) and 5-methyl (2a5mp)} and the Cu(II) complex of H2salic (5) by methods available in the literature and new Cu(II) complexes (6-9) of the salts (1-4) has been prepared. The Cu(II) complexes (6-9) were suggested by elemental analysis, FT-IR, AAS, UV-Vis and magnetic susceptibility techniques. The spectroscopic research results indicated that complexes 6-9 have tetrahedral geometries. Additionally, antimicrobial activities of free ligands (H2salic, 2ap, 2a3mp, 2a4mp and

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Shehab, Zina Hashem, Huda Suhail Abid, Sumaya Fadhil Hamad, and Sara Haitham. "Antimicrobial Activity of Gardenia jasminoides Callus and Crude Leaf Extracts for some Organic Solvents against some Pathogenic Bacteria and Yeasts." Journal of Biotechnology Research Center 8, no. 3 (2014): 40–45. http://dx.doi.org/10.24126/jobrc.2014.8.3.355.

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The study was conducted to evaluate the inhibitory activity of methanol extract of Gardenia jasminoides leaves compared with leaf crude extracts for some organic solvents namely Methanol, Ethanol, Petroleum ether, Asetone and Chloroform on growth of some pathogenic bacteria and yeast, which included four gram positive isolates Staphylococcus aureus, Enterococcus faecalis, Streptococcus pyogenes and Bacillus cereus and gram negative isolates Escherichia coli, Salmonella typhi, Proteus vulgaris and Pseudomonas aeruginosa and some yeasts Candida albicans and Saccharomyces boulardii, by using well

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Nikolova, I., I. Kostova, and M. . Marinov. "Phenothiazine Schiff bases containing chlorine: synthesis, characterization and antimicrobial study." Bulgarian Chemical Communications 56, no. D2 (2024): 26–30. http://dx.doi.org/10.34049/bcc.56.d.s2p27.

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This article presents the synthesis, structural and spectral (IR and NMR) characterization of some new phenothiazine Schiff bases containing chlorine. The target compounds (Figs. 1a-1d) were obtained as a result of the reaction between 2- amino-6-(10H-phenothiazin-10-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione and the corresponding chlorobenzaldehydes. The antimicrobial activity of the synthesized Schiff bases was evaluated against Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, Gram-negative bacteria Escherichia coli, Pseudomonas aeruginosa and Salmonella abony, yeasts Sacc

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Tay, Turgay, Ayşen Özdemir Türk, Meral Yılmaz, Hayrettin Türk, and Merih Kıvanç. "Evaluation of the Antimicrobial Activity of the Acetone Extract of the Lichen Ramalina farinacea and its (+)-Usnic Acid, Norstictic Acid, and Protocetraric Acid Constituents." Zeitschrift für Naturforschung C 59, no. 5-6 (2004): 384–88. http://dx.doi.org/10.1515/znc-2004-5-617.

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The acetone extract of the lichen Ramalina farinacea and its (+)-usnic acid constituent showed antimicrobial activity against Bacillus subtilis, Listeria monocytogenes, Proteus vulgaris, Staphylococcus aureus, Streptococcus faecalis. Yersinia enterocolitica, Candida albicans, and Candida glabrata. Norstictic acid was active against Aeromonas hydrophila as well as the above microorganisms except Yersinia enterocolitica. Protocetraric acid showed activity only against the tested yeasts Candida albicans and Candida glabrata. The MIC values of the extract as well as of the three substances were d

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Pedraza, Paula Sofía Rojas, Oscar Eduardo Rodriguez Aguirre, and Janeth del Carmen Arias Palacios. "Evaluation Of Antibacterial Activity In Pelargonium Graveolens Extracts." International Journal of Membrane Science and Technology 10, no. 2 (2023): 3962–75. http://dx.doi.org/10.15379/ijmst.v10i2.3292.

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The antibacterial activity of the total ethanolic extract and fractions of Pelargonium graveolens against Candida albicans, Escherichia coli, Pseudomonas spp, Staphylococcus aureus and Bacillus spp. Methods: To measure the relative antimicrobial activity, the percentage of inhibition was calculated by the plate and well method. Results: It was established that the highest antimicrobial activity was presented by the oily extract without preference for Gram positive or Gram negative, the acetone fraction with a value of 58.53% inhibition. The hexane fraction has activity greater than 100% only a

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Bello, S., V. J. Umoh, M. Galadima, and S. S. D. Mohammed. "Microbiological quality and HACCP of nono production in a Fulani settlement, Zaria Kaduna state, Nigeria." Journal of Bioscience and Biotechnology Discovery 5, no. 2 (2020): 20–31. http://dx.doi.org/10.31248/jbbd2020.128.

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This research studied the frequency of occurrence of Escherichia coli, Bacillus cereus, yeasts and moulds in some retail uncontrolled fermented milk samples (nono), and a hazard analysis was conducted to trace the sources of contamination during processing and suggest critical control measures. Fifty (50) nono samples purchased from Fulani milkmaids in Samaru market of Zaria town, Kaduna, Nigeria, were analyzed for presence of E. coli, B. cereus, Yeasts and Moulds. The traditional processing of nono by 3 producers of some of the market samples analyzed was studied by observing processing steps

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Li, Jinzhuan, Guiming Li, Haosen Zhang, et al. "The Fermentation Quality, Antioxidant Activity, and Bacterial Community of Mulberry Leaf Silage with Pediococcus, Bacillus, and Wheat Bran." Fermentation 10, no. 4 (2024): 214. http://dx.doi.org/10.3390/fermentation10040214.

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This study was conducted to investigate the effects of different strains and wheat bran on the fermentation quality, antioxidant activity, and bacterial community of mulberry leaf silage. Mulberry leaves were ensiled with Pediococcus acidilactici and Pediococcus pentosaceus (A), Bacillus subtilis and Bacillus licheniformi (DK), and Pediococcus acidilactici, Pediococcus pentosaceus, Bacillus subtilis, and Bacillus licheniformi (AK). Each treatment was supplemented with 10% wheat bran (fresh matter basis), and the strains were added in equal proportions for 7 days. The results indicated that the

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Malalai, Shakoor Fazal Ur Rehman* Gulmakai Shakoor Hafsa sunniya. "COMPREHENSIVE OVERVIEW ON THE APPLICATIONS OF PROBIOTICS FOR HEALTHY ANIMAL FARMING." indo American Journal of Pharmaceutical Sciences 04, no. 06 (2017): 1487–96. https://doi.org/10.5281/zenodo.810335.

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Probiotics,are living cells with various benefiting properties ,which are studied in extensive ways,and in the world commericialy various products have been introduced .In hundred of scientific research ,their useful effects in both human and animal health have been proven. The main groups of probiotics which are lactobacillus and Bifidobacterium .There are also reports on the probiotic potential of Pediococcus ,Lactococcus,Bacillus and Yeasts.In various ways the immunity have been enhanced by consuming the diary and non diary products.Their is brief documentation of different food matrics,whi

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