Bactericidal properties of straight-chained alkyltrimethylammonium bromides in a simple emulsion system

The introduction of the newest technologies of organic pig breeding has the basic principle of minimizing the use in pigs of chemicals, trace amounts of which in pig production adversely affect the quality of products and the health of consumers. The transition to herbal remedies, the maximum possible rejection of chemical synthesis products, is inhibited, in the main, by the relatively small spectrum of plant compounds with the investigated activity. According to the results of previous studies, six working solutions of Juglans regia L phytosupply extracts - potential phytosine disinfectants were developed: To investigate the bactericidal activity of the experimental preparations of Juglans regia, flushes were made from the internal structures and technological equipment of the housing of the pig stock of the experimental base v. Takhtaulove. Obtained samples of typical banal microflora of the pig complex were mixed to obtain a bacterial-containing suspension averaged over the concentration of microbial bodies and the spectrum of types of microflora in the microbiota. When cultured on nutrient media, with the superficial sowing of a suspension of banal microflora of a pig in the presence of a potential phytodisinfectant, processes of development of individual colonies of the microflora are observed. The amount and intensity of their development, the degree of inhibition of life, assess the level of bactericidal activity of the extracts. The highest bactericidal and fungicidal activity, and consequently, the potential efficacy as a possible disinfectant in the technology of organic pig breeding was revealed by the extracts of phytosupply Juglans regia L No. 2 (extractant - acetic acid to 5 %, nut of wax ripeness) and 4 (extractant, alcohol 20 % nutrient wax ripeness (proven after obtaining the primary extract of up to 5 % alcohol), which have bactericidal properties against gram-positive cocci and gram-negative sticks, but have a weak effect on the spore-forming bacilli. Key words: organic pig breeding, bactericidal activity, phyto-disinfectant, commonplace typical microflora of a pig complex, phyto row materials, walnut extract.

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Formation of the multifunctional metal-polymer composite with antiseptic, anesthetic and bactericidal properties by green technologies

10.1063/1.5046021 ◽

2018 ◽

Author(s):

E. E. Said-Galiev ◽

M. S. Rubina ◽

A. Yu. Vasil’kov ◽

A. V. Naumkin ◽

A. R. Khokhlov ◽

...

Keyword(s):

Polymer Composite ◽

Green Technologies ◽

Bactericidal Properties ◽

Metal Polymer

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Stabilization and Release of Palm Tocotrienol Emulsion Fabricated Using pH-Sensitive Calcium Carbonate

Foods ◽

10.3390/foods10020358 ◽

2021 ◽

Vol 10 (2) ◽

pp. 358

Author(s):

Phui Yee Tan ◽

Beng Ti Tey ◽

Eng Seng Chan ◽

Oi Ming Lai ◽

Hon Weng Chang ◽

...

Keyword(s):

Calcium Carbonate ◽

Droplet Size ◽

Entrapment Efficiency ◽

Ph Sensitive ◽

Emulsion System ◽

Ph Responsive ◽

Small Droplet ◽

Homogenization Time ◽

Oil In Water ◽

Ph Range

Calcium carbonate (CaCO3) has been utilized as a pH-responsive component in various products. In this present work, palm tocotrienols-rich fraction (TRF) was successfully entrapped in a self-assembled oil-in-water (O/W) emulsion system by using CaCO3 as the stabilizer. The emulsion droplet size, viscosity and tocotrienols entrapment efficiency (EE) were strongly affected by varying the processing (homogenization speed and time) and formulation (CaCO3 and TRF concentrations) parameters. Our findings indicated that the combination of 5000 rpm homogenization speed, 15 min homogenization time, 0.75% CaCO3 concentration and 2% TRF concentration resulted in a high EE of tocotrienols (92.59–99.16%) and small droplet size (18.83 ± 1.36 µm). The resulting emulsion system readily released the entrapped tocotrienols across the pH range tested (pH 1–9); with relatively the highest release observed at pH 3. The current study presents a potential pH-sensitive emulsion system for the entrapment and delivery of palm tocotrienols.

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Melittin antimicrobial peptide thin layer on bone implant chitosan-antibiotic coatings and their bactericidal properties

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2021.124432 ◽

2021 ◽

Vol 263 ◽

pp. 124432

Author(s):

Vahid Zarghami ◽

Mohammad Ghorbani ◽

Kamran Pooshang Bagheri ◽

Mohammad Ali Shokrgozar

Keyword(s):

Thin Layer ◽

Antimicrobial Peptide ◽

Bone Implant ◽

Bactericidal Properties

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ChemInform Abstract: NEW MANNICH BASES FROM 5-(METHYLPHENOXYMETHYL)-1,3,4-OXADIAZOLE-2-THIONE DERIVATIVES AND THEIR BACTERICIDAL PROPERTIES

Chemischer Informationsdienst ◽

10.1002/chin.197845198 ◽

1978 ◽

Vol 9 (45) ◽

Author(s):

A. K. SENGUPTA ◽

O. P. BAJAJ

Keyword(s):

Mannich Bases ◽

Bactericidal Properties

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Transformed tissue of Dionaea muscipula J. Ellis as a source of biologically active phenolic compounds with bactericidal properties

Applied Microbiology and Biotechnology ◽

10.1007/s00253-021-11101-8 ◽

2021 ◽

Vol 105 (3) ◽

pp. 1215-1226

Author(s):

Wojciech Makowski ◽

Aleksandra Królicka ◽

Anna Nowicka ◽

Jana Zwyrtková ◽

Barbara Tokarz ◽

...

Keyword(s):

Phenolic Compounds ◽

Phenolic Acids ◽

Antibacterial Properties ◽

Biologically Active ◽

Plant Genome ◽

Resistant Bacteria ◽

Shoot Cultures ◽

Transformed Plants ◽

Dionaea Muscipula ◽

Bactericidal Properties

Abstract The Venus flytrap (Dionaea muscipula J. Ellis) is a carnivorous plant able to synthesize large amounts of phenolic compounds, such as phenylpropanoids, flavonoids, phenolic acids, and 1,4-naphtoquinones. In this study, the first genetic transformation of D. muscipula tissues is presented. Two wild-type Rhizobium rhizogenes strains (LBA 9402 and ATCC 15834) were suitable vector organisms in the transformation process. Transformation led to the formation of teratoma (transformed shoot) cultures with the bacterial rolB gene incorporated into the plant genome in a single copy. Using high-pressure liquid chromatography, we demonstrated that transgenic plants were characterized by an increased quantity of phenolic compounds, including 1,4-naphtoquinone derivative, plumbagin (up to 106.63 mg × g−1 DW), and phenolic acids (including salicylic, caffeic, and ellagic acid), in comparison to non-transformed plants. Moreover, Rhizobium-mediated transformation highly increased the bactericidal properties of teratoma-derived extracts. The antibacterial properties of transformed plants were increased up to 33% against Staphylococcus aureus, Enterococcus faecalis, and Escherichia coli and up to 7% against Pseudomonas aeruginosa. For the first time, we prove the possibility of D. muscipula transformation. Moreover, we propose that transformation may be a valuable tool for enhancing secondary metabolite production in D. muscipula tissue and to increase bactericidal properties against human antibiotic-resistant bacteria. Key points • Rhizobium-mediated transformation created Dionaea muscipula teratomas. • Transformed plants had highly increased synthesis of phenolic compounds. • The MBC value was connected with plumbagin and phenolic acid concentrations.

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Engineering motile aqueous phase-separated droplets via liposome stabilisation

Nature Communications ◽

10.1038/s41467-021-21832-x ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Shaobin Zhang ◽

Claudia Contini ◽

James W. Hindley ◽

Guido Bolognesi ◽

Yuval Elani ◽

...

Keyword(s):

Aqueous Phase ◽

Marangoni Effect ◽

Living Systems ◽

Biological Processes ◽

Biological Applications ◽

Emulsion System ◽

Biotechnological Potential ◽

New Directions ◽

Directional Motion ◽

The Stability

AbstractThere are increasing efforts to engineer functional compartments that mimic cellular behaviours from the bottom-up. One behaviour that is receiving particular attention is motility, due to its biotechnological potential and ubiquity in living systems. Many existing platforms make use of the Marangoni effect to achieve motion in water/oil (w/o) droplet systems. However, most of these systems are unsuitable for biological applications due to biocompatibility issues caused by the presence of oil phases. Here we report a biocompatible all aqueous (w/w) PEG/dextran Pickering-like emulsion system consisting of liposome-stabilised cell-sized droplets, where the stability can be easily tuned by adjusting liposome composition and concentration. We demonstrate that the compartments are capable of negative chemotaxis: these droplets can respond to a PEG/dextran polymer gradient through directional motion down to the gradient. The biocompatibility, motility and partitioning abilities of this droplet system offers new directions to pursue research in motion-related biological processes.

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Assess the Effectiveness of protective Concrete coatings of microbiological sulfuric acid Aggression

E3S Web of Conferences ◽

10.1051/e3sconf/20199702022 ◽

2019 ◽

Vol 97 ◽

pp. 02022

Author(s):

Viktor Sopov ◽

Julia Danchenko ◽

Ekaterina Latorez

Keyword(s):

Sulfuric Acid ◽

Building Structures ◽

Predominant Role ◽

Microbiological Processes ◽

Repair Materials ◽

Bactericidal Properties ◽

Mineral Acids ◽

Concrete Building ◽

Modified Epoxy

Specification of corrosion processes in sewerage networks, the predominant role of microbiological processes in them requires the protection of concrete with materials resistant to specific biogenic sulfuric acid aggression. The effective protective materials, in this case, are those that, in addition to acid-proofing materials, have bactericidal properties. Polymer composite materials (PCM) of cold curing based on modified epoxy-resin, resins with dispersed oxides as fillers are widely used in construction. Unique properties and simple technologies make it possible to use them as injection formulations for repair, restoration and restoration of building structures and structures, waterproofing and facing materials, for impregnating, gluing and coating metal, wooden, brick and concrete building structures and parts. In the reconstruction and restoration of sewerage collectors operating under conditions of exposure to liquid biochemically aggressive media with mineral acids and organic substances, particular attention is paid to the permeability of repair materials. Based on the results of the study, PCM compositions were chosen whose estimated lifetime is about 20 years, ensuring reliable protection of the sewage collectors from corrosion.

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