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Fractional extracts
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This paper aims to provide information about the fractions of cadmium (Cd) and its distribution in surface sediment collected from bivalves harvesting areas in Binh Thuan province (Tuy Phong, Phan Thiet, Lagi). For this purpose, the sediment samples were collected monthly along with these areas in 2015–2016. To analyze the fractions of Cd, a five-step Tessier (1979) sequential extraction process was used, including Fraction 1 (Exchangeable), Fraction 2 (Bound to carbonate), Fraction 3 (Bound to iron-manganese oxide), Fraction 4 (Bound to organic compounds), and Fraction 5 (Residual).
10p
dianmotminh02
03-05-2024
5
1
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In this study, the antidengue virus activity of the ethanol extract from the leaves and twigs of E. cyathophora on four virus serotypes DENV1-DENV4 was examined. The result showed that the ethanol extract displayed antidengue activity on DENV1-4 with PRNT50 values of 15.625-62.5 µg/mL. This extract was fractionated to the n-hexane and ethyl acetate fractions.
7p
dianmotminh02
03-05-2024
3
1
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Zoanthid is a potential natural resource with many biological activities, such as antioxidant, antiviral, antiinflammatory, and cytotoxic activity. Therefore, this study aimed to evaluate the antioxidant activity of 70% ethanol crude extract and dichloromethane fraction from Zoanthus vietnamensis. The total polyphenol content of ethanol and dichloromethane extracts were 19.36 ± 1.37 and 24.95 ± 0.63 mg GAE/g extract, respectively.
9p
dianmotminh02
03-05-2024
4
1
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Ebook "Ionic liquids for better separation processes" discusses capital separation processes of industrial interest and explores the potential for substantial improvement offered by a promising class of substances: ionic liquids. These low melting point salts, with their unique characteristics, have been gaining relevance in the field of separation through a variety of approaches.
235p
tracanhphuonghoa1007
22-04-2024
4
3
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Part 2 book "Inorganic trace analytics" edited by Henryk Matusiewicz and Ewa Bulska includes content: Trace element and speciation analysis of biological samples; forensic analysis of microtraces, industrial analysis and speciation, quality of results in trace element and speciation analysis, sample pretreatment for trace speciation analysis, solid phase extraction in fractionation of trace elements.
185p
muasambanhan09
16-03-2024
2
0
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Liver cancer and breast cancer have high death rates and tend to increase rapidly in recent years in Vietnam and over the world. Currently, the study of bioactive compounds isolated from plants for killing cancer cells is of interest. The study aims to identify the cytotoxicity using MTT assay of Combretum quadrangulare Kurz fractions against MCF-7 cells.
10p
vibego
02-02-2024
0
0
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This paper describes a new congestive heart failure (CHF) treatment performance measure information extraction system – CHIEF – developed as part of the Automated Data Acquisition for Heart Failure project, a Veterans Health Administration project aiming at improving the detection of patients not receiving recommended care for CHF.
7p
visteverogers
24-06-2023
3
2
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The pollution of heavy metals in ore mining areas is severe at present in Vietnam as well as in the world. Assessing the level and risk of contamination of arsenic (As) in the soil in the ore mining area is essential for environmental management.
9p
viironman
02-06-2023
5
2
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Phenolic acids are one of the major fractions identified in the extract of several vegetable seed oils which present interesting antioxidant properties. A density functional theory (DFT) study on the antioxidant potential of eight phenolic acids including gallic, vanillic, isovanillic, ferulic, caffeic, β-coumaric, cinnamic, and chlorogenic acids, is presented in this paper.
12p
vidudley
20-02-2023
3
2
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In the present work, we aimed to examine the antidepressant-like effect and the underlying mechanism of OS-B using a UCMS model of depression. Our results suggested that OS-B exhibits anti-depressive effects at least in part via noradrenergic, dopaminergic, and/or serotonergic systems.
7p
vicedric
08-02-2023
2
1
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In this study, the pre-purified pigment extracts from the cactus fruits of Opuntia stricta var. dillenii (Opuntia) and vegetable leaves from Atriplex hortensis var. rubra (Atriplex) were fractionated by high performance CCC (HPCCC) using the ion-pair solvent system of tert.-butylmethyl-ether/n-butanol/acetonitrile/water, trifluoroacetic acid (TBMe/n-BuOH/ACN/water) (v/v/v/v, 2:2:1:5, 1% TFA).
7p
vicedric
08-02-2023
5
2
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In this study, antimicrobial nanofibers were produced with the mixtures of polyvinyl alcohol (PVA) and cyclotide-rich fractions by electrospinning method. After extraction, the first separation was carried out with C18 flash chromatography and then fractioned into five separate parts by reversed-phase high-pressure liquid chromatography (RP-HPLC). The molecular weights of cyclotides in each fraction were determined by quadrupole time-of-flight liquid chromatography-mass spectrometry (Q-TOF LC-MS).
10p
lyhuyenthu
31-01-2023
4
1
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Polysaccharides are substances that modify the biological response to several stressors. The present study investigated the antitumor activity of the soluble fraction of polysaccharides (SFP), extracted from cabernet franc red wine, in Walker-256 tumor-bearing rats.
11p
vihermione
06-01-2023
4
2
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An unusual heteropolysaccharide was isolated from the fruiting bodies of the medicinal mushroom Grifola frondosa, via successive cold aqueous extraction, followed by fractionation through freeze-thawing, precipitation with Fehling solution and dialysis using a membrane with a size exclusion cut-off of 500 kDa.
8p
vihermione
06-01-2023
12
2
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An aqueous extract containing polysaccharides was obtained from the giant mushroom Macrocybe titans, and it was purified by amylase treatment, freeze-thawing process and dialysis. The purified fraction (ESP) was analyzed by HPSEC and GC–MS which showed a homogenous polysaccharide with Mw 14.2 × 103 g/mol composed by galactose and fucose.
7p
vihermione
06-01-2023
5
3
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Development of a sustainable bioeconomy requires valorization of renewable resources, such as wood hemicelluloses. The intra- and inter-molecular association of hemicelluloses within themselves or with other wood components can result in complex macromolecular features.
10p
viginny
30-12-2022
5
3
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The study "Isolation and characterization of antibacterial compounds from Euphorbia tirucalli against Xanthomonas axonopodis pv. citri" focused on the comparison of the extraction yield and antibacterial properties of Euphorbia tirucalli against X. axonopodis pv. citri, phytochemical screening, quantification of phenolic and flavonoid contents of the fraction extract.
8p
tieuvulinhhoa
22-09-2022
11
2
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Fractions yielded from Phellinus gilvus fruiting bodies by liquid-liquid partition of methanol extract contained various bioactive compounds such as phenolics, flavonoids and terpenes. Butanol, water and ethyl acetate fractions had large amount of phenolics, 158.12 - 247.31 mg of gallic acid equivalents (GAE)/g and low amount of flavonoids, 21.74 - 36.05 mg of quercetin equivalents (QE)/g.
9p
vimelindagates
18-07-2022
5
2
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The venom of two dominant species of wolf spiders, Pardosa sumatrana Thorell and Pardosa birmanica Simon, was extracted and characterized. Insecticidal potential of crude venom and selected peptide fractions (i.e. 35-kDa fraction of both spiders) was evaluated in the laboratory using Rhopalosiphum padi (Linnaeus) (Homoptera: Aphididae) as a model pest. Results of the study showed that both the crude venom and the protein fractions caused significantly higher mortality in treated aphids compared to the control.
3p
dolomite36
30-12-2021
6
0
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The water-soluble fraction of a strawberry extract was precipitated using a phenol-based procedure and separated by 2-DE. Further, all known strawberry allergens were localized on a 2-DE map and they were matched with spots recognized by sera of patients with different allergic patterns
9p
schindler
30-12-2021
4
0
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