Isolation and identification
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To elucidate the composition of bioactive substances from this plant, the aerial part of the plant was selected for study. This paper reported the isolation, structural identification of eleven phenolic compounds and their NO production inhibition activity.
8p dianmotminh02 03-05-2024 3 1 Download
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This study would like to point out the potential compounds as inflammatory agents. Herein, we displayed the isolation and structural identification of thirteen compounds including ten flavonoids, one tannin, one triterpenoid, and one derivative of benzoic acid from the methanolic extract. Furthermore, all of them were evaluated the anti-inflammatory activity.
12p dianmotminh02 03-05-2024 1 1 Download
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wo germacranolide sesquiterpenes, 9β-acetoxy-3-epi-nobilium, zoapatanolide B and four benzoate ester derivatives, benzyl 2-O-β-D-glucopyranosyl-6-methoxybenzoate, benzyl 2-O-β-D-glucopyranosyl-6- hydroxybenzoate, methyl 2-O-β-D-glucopyranosylbenzoate, ficuside G were isolated from aerial part of Sigesbeckia orientalis. Structural elucidation of the isolated compounds was done using a combination of HR-ESI-MS, one-dimensional and two-dimensional NMR spectral methods, and comparison their spectral data with the previous literature.
7p dianmotminh02 03-05-2024 4 2 Download
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In this study, a total of 30 yeast isolates were recovered from local fruits in Thua Thien Hue province. Genetic characterization based on the ITS sequences identified isolates belonging to 3 species including Saccharomyces cerevisiae, Lachancea fermentati, and Clavispora fructus, with high sequence homology (over 99%) compared to published sequences in the GenBank.
11p viritesh 02-04-2024 3 1 Download
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Part 2 book "Chromatography - The most versatile method of chemical analysis" by Leonardo de Azevedo Calderon includes contents: Chromatographic analysis of nitrogen utilization and transport in arbuscular mycorrhizal fungal symbiosis; instrumental analysis of tetrodotoxin; chromatography as the major tool in the identification and the structure function relationship study of amylolytic enzymes from saccharomycopsis fibuligera R64; isolation and purification of sperm immobilizing agglutinating factors from bacteria and their corresponding receptors from human spermatozoa,...
198p muasambanhan09 16-03-2024 5 1 Download
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Part 1 book "Aquaculture microbiology" includes content: isolation and identification of edwardsiellosis causing microorganism; methods for characterizing flavobacterium in fish; isolation and identification of citrobacter species; isolation and identification of infectious salmon anemia virus from shrimp; isolation and identification of betanodavirus from shrimp; isolation and identification of hemorrhagic septicemia virus from shrimp; isolation and identification of pathogens from fish - tilapia lake virus (TiLV),... and other contents.
118p muasambanhan07 20-02-2024 1 0 Download
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Polysaccharide monooxygenases (PMOs) and Glycoside Hydrolases (GH) play a crucial role in breaking down chitin and cellulose. Research on PMOs has mainly focused on their role in the production of bioethanol from biomass. Still, the potential of PMOs as virulence factors in microorganisms is not been fully studied.
9p vibego 02-02-2024 3 0 Download
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Part 1 book "Campylobacter spp. and related organisms in poultry - Pathogen-host interactions, diagnosis and epidemiology" includes content: About campylobacter spp.; isolation and identification of campylobacter spp. in poultry; colonization of campylobacter jejuni in poultry; immune response after campylobacter spp. infection in poultry; campylobacter jejuni in poultry - a commensal or a pathogen.
97p muasambanhan05 16-01-2024 3 0 Download
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Bacterial strain LB7 isolated from pickled melon solution was identified as Lactobacillus plantarum using molecular marker 16S rRNA gene (rDNA) sequences. The content of lactic acid in the isolate culture was relatively high (33.7 g/l) when quantified using HPLC system.
7p vimarillynhewson 02-01-2024 2 0 Download
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Developing new biofertilizers has been an area of great interest in modern agriculture. This study focused on actinobacteria possessing high chitinase activity, biofilm formation, plant growth promotion, and antifungal activity. Two chitinolytic actinomyces strains, YSS-3.3 and YWS-5.1, were isolated from soil and chitin flake samples collected from Yok Don National Park in the Central Highlands, Vietnam.
10p vimarillynhewson 02-01-2024 2 2 Download
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Ebook "Sesquiterpene lactones: Advances in their chemistry and biological aspects" addresses chemical and biological aspects related to sesquiterpene lactones (STLs). Experts in different fields have been invited to contribute on this class of compound's chemistry, isolation and identification, biological activities (antibacterial, antifungal, antiviral, antitrypanosomal, antileishmanial,antiplasmodial, antiproliferative and antiinflammatory), synthesis, biosynthesis, derivatization and QSAR analysis.
379p lamquandat 28-12-2023 8 2 Download
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In this study Roselle seed protein isolates were digested using pepsin followed by pancreatin at different time in order to produce hydrolysate with good antioxidant. The prepared hydrolysates were as effective as antioxidants in model systems, in scavenging of free radicals. This effect was concentration-dependent and was also influenced by the hydrolysis time.
9p viisac 23-09-2023 6 1 Download
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Environments with temperatures from 50°C to 80°C are rare in nature and are almost exclusively associated with geothermal regions including hot springs, solar-heated soils and volcanic areas. Thermophilic bacteria already exist and prefer in such habitats.
9p vimulcahy 18-09-2023 6 3 Download
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In this paper, the results on isolation, identification, and selection of suitable culture conditions of the strain Thraustochytrium pachydermum TSL10 isolated from the sea area of Spratly Island, Truong Sa Archipelago, Vietnam in 2021 were presented.
19p vimulcahy 18-09-2023 6 3 Download
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In this study, species DL0091 was morphologically and phylogenetically described as Metacordyceps neogunnii, containing numerous bioactive constituents, especially a high amount of adenosine and cordycepin, therefore, it was considered a valuable resource in medicine.
12p vimulcahy 18-09-2023 6 3 Download
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From samples of moldy wall paint and damaged water-based paint, we isolated and quantified the density of microorganisms present in the samples and determined the morphology of the isolates; thereby, identifying the genera of the bacteria and mold strains.
9p viannee 02-08-2023 5 3 Download
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Endophytic fungi, microfungi that internally infect living plant tissues, are reported to have the ability to synthesize many enzymes, plant growth hormones and pharmaceutically active compounds similar to those in their hosted plants. This has opened a potential path of using endophytic fungi as a bioreactor for mass production of bioactive compounds at a lower cost.
10p vicaptainmarvel 21-04-2023 5 2 Download
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The thesis investigates the growth promoting effects of plant growth promoting bacteria (PGPB) in chickpea and wheat. Three main topics covered are: 1) Isolating local Plant Growth Promoting Bacteria; 2) Screening and characterization of isolates; 3) Assessment and identification of the selected strains.
107p runthenight04 02-02-2023 7 3 Download
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Chitinolytic bacteria and their chitinases have attracted great attention due to potential applications in various fields, including medicine, food processing, agriculture. To develop a novel type of biocontrol agents alternative chemical agents for phytopathogenic controlling, we focus on bacteria possessed high chitinase activity. In this study, a chitinase gene (chiB) from Bacillus velezensis RB.IBE29 was identified, cloned, and analyzed.
5p vipatriciawoertz 31-05-2022 7 1 Download
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A filamentous cyanobacterium Oscillatoria limosa was isolated from the Tri An Reservoir, and cultured in laboratory under controlled conditions. Microscopic observation was used for morphological identification. Microcystins (MCs) concentration was determined using Highperformance liquid chromatography (HPLC).
8p viellenkullman 13-05-2022 6 1 Download