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Agar - PubMed

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Last Updated: 16 August 2022

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A double layer agar plate method results in an improvement for enumerating Vibrio vulnificus and Vibrio parahaemolyticus exposed to nutrient deficiency and refrigeration temperature.

In V. vulnificus incubated aerobically, a positive correlation was found between sodium pyruvate and the establishment of platable colony-forming capability. Using tryptic soy agar containing 3% salt TSASAS is overlaid by thiosulfate-bile salts-sucrose agar TCBS, a higher platable colony number of Vibrio spp.

Source link: https://doi.org/10.1016/j.fm.2022.104085


Potential Contribution to Dietary Reference Intake (DRI) of Agar Extracted from Gelidium latifolium (Gelidiaceae, Rhodophyta) as a Mineral Source.

In agar obtained seasonally from Gelidium latifolium off the coast of Black Sea using the inductively coupled plasma mass spectroscopy, the determination of Se was established. According to the Institute of Medicine and the Official Journal of the European Union, the potential contribution of the agar to the dietary reference intakes was investigated. The findings show that agar extracted from G. latifolium could be used as a food supplement to help ensure that DRIs have adequate minerals and trace elements are present in certain DRIs. Extractive agar's were between 0. 36 and 40. 54, so they could prevent hypertension, preeclampsia, and heart disease in human beings. Extract agar from G. latifolium red seaweed was of high quality and safety, and could be used in the field of diet, according to research.

Source link: https://doi.org/10.1007/s12011-022-03381-6


Exploring the role of antimicrobials in the selective growth of purple phototrophic bacteria through genome mining and agar spot assays.

Purple non-sulphur bacteria are an emerging group of microbes useful in applied microbiology applications such as wastewater treatment, plant biostimulants, microbial protein, polyhydroxylkanoates, and H2 production. This so-called selectivity indicates that the microbial community will have a low number and a high number of a particular PNSB species. In agar spot assays for Rhodobacter blasticus EBR2 and Rhodopseudomonas palustris EBE1 showed inhibition zones of 5. 1 and 1. 5 mm, respectively. A peptide fragment was found in the supernatant that had a 100% identity match with a well-known non-ribosomal peptide synthetase with antimicrobial activity, according to Peptidomic analysis.

Source link: https://doi.org/10.1111/lam.13795


Facile preparation of 3D porous agar-based heteroatom-doped carbon aerogels for high-energy density supercapacitors.

The production of heteroatom-doped porous carbon materials with high electrical conductivity and a large surface area via an environmentally friendly route is both critical and challenging. As the raw material and ammonia as the activator and nitrogen source, agar porous carbon was produced for supercapacitors by a one-step carbonization process with agar as the initiator and nitrogen source. This paper introduces a new approach for the production of nitrogen heteroatom-doped hierarchical porous carbon materials for performance-enhanced energy storage systems.

Source link: https://doi.org/10.1039/d2ra03685a


Synthesis of Gentamicin-Immobilized Agar with Improved Antibacterial Activity.

respectively, the minimum inhibitory concentration and minimum bactericidal concentration of agar-gentamicin against Escherichia coli were 39. 1 bcg/mL and 156. 2 bc/mL, respectively, and the MICs and MBC against Staphylococcus aureus were 19. 5 bcg/mL and 78. 1 bcg/mL. According to a biofilm experiment, such agar-gentamycin conjugate in a small dose may help prevent the biofilm production of Escherichia coli and Staphylococcus aureus.

Source link: https://doi.org/10.3390/polym14152975


Electrosprayed Agar Nanocapsules as Edible Carriers of Bioactive Compounds.

The role of solution properties in the creation of agar particles was investigated, as well as the effects of both agar and acetic acid concentrations on the size and morphology of the resulting particles. Particle diameter values ranging between 50 and 400 nm were also reduced when decreasing agar concentration, leading to a decrease in particle size. Although the introduction of the bioactive in the hydrophilic food simulant was negligible, an initial burst release was followed by a slower sustained release when the capsules were immersed in a 50% ethanol solution.

Source link: https://doi.org/10.3390/foods11142093


Adjustable Gel Texture of Recovered Crude Agar Induced by Pressurized Hot Water Treatment of Gelidium sesquipedale Industry Waste Stream: An RSM Analysis.

During a concentrated extraction of Gelidium sesquipedale by chemical-rich solid waste, a significant amount of bioactive compound-rich solid waste was released. The effect of mild pressurized hot water extraction on repurposing this waste for the creation of agar with an adjustable gel texture is investigated. The effects of the operating temperatures, times, pressures, and algae concentrations were determined by a two-factor interaction response surface model. u00b0C: Between 39 u00b1 1 and 52 0. 5 u00b1C. A maximum agar yield of 10% and thermal hysteresis between 39 u00b1 and 52 was obtained by an exposed technology that produced gels with a minimum agar yield of 10% and thermal hysteresis between 39 & 52 0. 5 u00b0C.

Source link: https://doi.org/10.3390/foods11142081


Identification, Characteristics and Function of Phosphoglucomutase (PGM) in the Agar Biosynthesis and Carbon Flux in the Agarophyte Gracilariopsis lemaneiformis (Rhodophyta).

The presence of four enzymes involved in the agar biosynthesis were found in commercial seaweed Gracilariopsis lemaneiformis, helping to identify agar biosynthesis in the agar biosynthesis, and phosphoglucomutase was reported as highly correlated with agar accumulation. To better understand agar biosynthesis in commercial seaweed Gracilariopsis lemaneiformis, the development of four enzymes involved in the agar biosynthesis was determined in phosphate phosphoglucosynthesis of agar biosynthesis was found agar biosynthesis was found, agar a agar biosynthesis, agar phosphate, phosphatagar biosynthesis was found in phosphatagar agar biosynthesis was discovered, phosphatagar biosynthesis was shown as agar biosynthesis, agar biosynthesis, agar biosynthesis, agar biosynthesis of agar biosynthesis of agar Both the GlPGM1 and GlPGM3 protein values showed a remarkable adherence with agar variations, and GlPGM3 may have played a role in the carbon flux between floridoside, floridean starch, and agar synthesis. These results reveal the vital role of PGM in limiting the production of agar and other carbohydrates in G. lemaneiformis, as well as a guide to artificially regulating agar accumulation.

Source link: https://doi.org/10.3390/md20070442


Antioxidant and Teratogenic Activities of Formulated Agar Extracted from Brown Seaweed Turbinaria conoides against Zebrafish Larvae.

This research investigates the antioxidant and teratogenic effects of two separate methods of preparing agar from Turbinaria conoides using a zebrafish model. Formulated agar1 had a higher concentration of the ingredients, but formulated agar 2 had a smaller amount. The FAs' toxicology was dose-dependent, with FA1 having the least teratogenic activity when compared to FA2. FA1 had higher antioxidant activity in comparison to FA2, and FA1 was found to have more antioxidant activity. The teratogenic activity of two FAs was determined in zebrafish embryos at 24, 48, 72, and 96 hours post fertilization, at different doses and 96 hours post fertilization.

Source link: https://doi.org/10.1155/2022/3520336

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions