biological activity of tocotrienols

Báo cáo khoa học " Structure elucidation and antioxidant activity of a novel polysaccharide isolated from Tricholoma matsutake " ppt

Ngày tải lên : 28/06/2014, 11:20

... hydroxyl radicals The ability of the TMP-A to scavenge hydrogen peroxide was determined according to the method of Smirnoff and Cumbes [17] The percentage of scavenging of hydrogen radicals was calculated ... predicted structure of the novel polysaccharide TMP-A was shown in Fig 3.3 Determination of DPPH radical scavenging activity of TMP-A Fig Superoxide radical scavenging effect of TMP-A from Tricholoma ... authors thank Dr Pu Su (Department of Chemistry of Medicinal Natural Products and Key Laboratory of Drug Targeting of Education Ministry PRC, West China College of Pharmacy, Sichuan University)...

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Báo cáo vật lý: "Evaluation of In Vitro Antioxidant Activity of 5H-dibenz[b,f]azepine and Its Analogues" ppt

Ngày tải lên : 07/08/2014, 14:20

... Evaluation of In Vitro Antioxidant Activity 80 depends on a common initiating step, the peroxidation of polyunsaturated fatty acid components of LDLs.8 Such modification of LDLs can be inhibited ... the seven member ring of compound (a) leads to a considerable increase in the antioxidant activity of compound (d) In the case of compounds (b), (c), (e) and (f), the absence of free N–H and –OCH3 ... peroxidation activity in a liposome model system The compounds were dissolved in distilled Evaluation of In Vitro Antioxidant Activity 84 ethanol (50 ml) to prepare 1000 µM solutions Solutions of different...

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Báo cáo y học: "Behavioral and antioxidant activity of a tosylbenz[g]indolamine derivative. A proposed better profile for a potential antipsychotic agent" pptx

Ngày tải lên : 08/08/2014, 20:23

... test its antioxidant activity Figure The Ugo-Basile activity cage (type 7401) The Ugo-Basile activity cage (type 7401) Materials and Methods Synthesis of TPBIA Key step of the synthesis was a ... motor activity of the rats was measured between 12-6 pm in an Ugo-Basile activity cage (type 7401) (Figure 2) in vitro The antioxidant potential of TPBIA was investigated in the model of in vitro ... (Number of experimental animals: 4) b) modifies the motor behavior of the experimental animals, c) shows antioxidant activity a) The Polar Surface Area (PSA) of a molecule is defined as the area of...

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Báo cáo y học: "Antioxidant activity of tuberosin isolated from Pueraria tuberose Linn" pot

Ngày tải lên : 11/08/2014, 03:20

... steps of the signaling cascade of LPS induced NO production, but it is still not clear, whether it is directly inhibiting the activity of iNOS enzyme or it is suppressing the synthesis of this ... quantitation of microgram quantitites of protein utilizing the principle of protein-dye binding Analytical Biochemistry 1976, 72:248-254 31 Laemmli : Cleavage of structural proteins during the assembly of ... Effect on NO production Inbred male rats of Charls foster (CF) strain of matched age and weight were purchased from the central animal house of Institute of Medical Sciences and acclimatized in...

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Antioxidant activity of essential oils

Ngày tải lên : 16/08/2014, 22:31

... determination of ferric reducing antioxidant power (FRAP), determination of antioxidant activity with thiobarbituric acid reactive species (TBARS) and automatic determination of the oxidative stability of ... specimens of spice plant materials are deposited in the Department of Biochemistry and Food Chemistry, Faculty of Chemical Technology, Split, Croatia Isolation of Essential Oils A hundred grams of dried ... Determination of Antioxidant Activity with the 2,2'-Diphenyl-1-picrylhydrazyl (DPPH) Radical Scavenging Method The antioxidant activity of volatile compounds was measured in terms of hydrogen donating...

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Evaluation of the antioxidant activity of scutellaria baicalensis and its constituents in diabetic rats

Ngày tải lên : 12/09/2015, 10:58

... gratitude to Professor Bay Boon Huat of the Department of Anatomy, Yong Loo Lin School of Medicine and Associate Professor Heng Chew Kiat of the Department of Pediatrics, Yong Loo Lin School of Medicine ... Figure 6.1 Effects of metformin, baicalin and metformin + baicalin on the hepatic (A) SOD activity; (B) CAT activity; (C) GPx activity; (D) quantifications of the protein expressions of CAT, SOD and ... group Figure 4.3 Effects of metformin, baicalin and metformin + baicalin on the hepatic (A) CAT activity; (B) SOD activity; (C) GPx activity; (D) protein expression of CAT, SOD and GPx; (E) representative...

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Nghiên cứu về hoạt tính chống oxy hóa của các cây thuộc African Antioxidant Activity of African Medicinal Plants

Ngày tải lên : 12/01/2016, 18:24

... antioxidant activity Thin-layer chromatographic analyses of the extracts showed the presence of phenolic compounds in the crude extracts, two of which were flavonoids The anti-inflammatory activity of ... scavenging activity assay, it was found that all of the P lentiscus extracts, except for the chloroform extract, have a high radical scavenging activity (90%), equivalent to that of the standard, ... scavenging activity of the extracts from the leaves of P lentiscus in solvents such as ethanol, ethyl acetate, aqueous/ethyl acetate, hexane, aqueous/hexane, chloroform, and aqueous/chloroform have...

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Báo cáo y học: "Pravastatin Provides Antioxidant Activity and Protection of Erythrocytes Loaded Primaqe"

Ngày tải lên : 25/10/2012, 11:40

... the shape changes of erythrocytes are induced by addition of some drugs Spherocytes formation may 364 be due to alteration of structural protein of the membrane as a result of protein oxidation ... spectrophotometric method [20] A mixture of 200 μL of 8% sodium dodecyl sulfate, 200 μL of 0.9% thiobarbituric acid and 1.5 ml 20% acetic acid was prepared 200 μL of RBCs lysate and 1.9 ml distilled ... that of the control group see Figure Hemolysis profile of control erythrocytes and erythrocytes incubated with pravastatin, primaquine alone or in combination is revealed in Table The results of...

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Báo cáo hóa học: "Effects of Pin-up Oxygen on [60]Fullerene for Enhanced Antioxidant Activity" pptx

Ngày tải lên : 22/06/2014, 01:20

... antioxidant activity of guest fullerenes To the best of our knowledge, this is the ﬁrst result of the higher antioxidant activity of C60O in comparison with pristine C60, despite the decreasing of p-conjugation ... bleaching assay is one of the common methods used in the ﬁeld of food chemistry for evaluating antioxidant activity The method is based on the discoloration of the yellowish color of a b-carotene solution ... in cyclohexane) b-Caroten Bleaching Method Chloroform solutions of 11 lL of b-carotene (1.0 mg/mL), 4.4 lL of linoleic acid (0.1 g/mL) and 22 lL of Tween 40 (0.2 g/mL) were mixed in a quartz cell...

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$Báo cáo khoa học " Isolation, composition analysis, antioxidant activity and cytotoxicity of selenium-enriched polysaccharide fractions isolated from Lentinula edodes mycelial cultures " potx$

Báo cáo khoa học " Isolation, composition analysis, antioxidant activity and cytotoxicity of selenium-enriched polysaccharide fractions isolated from Lentinula edodes mycelial cultures " potx

Ngày tải lên : 28/06/2014, 11:20

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Báo cáo y học: " Antioxidant components of naturally-occurring oils exhibit marked anti-inflammatory activity in epithelial cells of the human upper respiratory system" pdf

Ngày tải lên : 12/08/2014, 13:22

... protection Involvement of antioxidant genes with varying kinetic profiles of activity could provide both immediate and more prolonged antioxidant capacity The activity of such a mechanism would ... Assessment of Nasal Epithelial Gene Expression Treatment of cells in culture Collection of nasal mucosal epithelial cells was made from the upper and lower aspects of the inferior medial turbinates of ... potential pathways of their antioxidant activity In the case of coconut oil, its phenolic acid constituents have been proposed as the primary sources of its oxidant species scavenging activity [28]...

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anthocyanin – study of extraction from basella rubra l and verifying antioxidant activity, application in identificating di sodium tetra borate in food

Ngày tải lên : 06/10/2015, 15:58

... Possibilities of indicator papers Figure 10 Possibility of paper 20% in identification of Borax Figure 11 Possibility of paper 40% in identification of Borax Figure 12 Possibility of paper 60% ... IC50 index of Basella rubra L was 1.8 µg/mL, profusely lower than garlic acid and ascorbic acid The lower of IC50 the more effective of antioxidant activity, therefore, the antioxidant of Anthocyanin ... concentration of 0.05% Di Sodium Tetra Borate solution change from colorless to violet when added drop of kit 20% and drop of kit 10% Figure Possibility of solution 10% in identification of Borax...

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Báo cáo y học: "Anticancer Activity of the PR Domain of Tumor Suppressor RIZ1"

Ngày tải lên : 25/10/2012, 11:15

... progression in eight different types of cancer, and evaluated the anticancer activity of the PR domain against human hepatoma HuH7 cells through both direct administration of recombinant His6-tagged PR ... was performed using GraphPad InStat (GraphPad Software, San Diego, California, USA) Anticancer activity of PR domain by cDNA transfection The cloning of the PR domain (residues 13-193) has been ... respectively Western blot of PR domain The expression of the PR domain was examined after 24 hr of transfection with pcDNA/HisMax/PR and the empty vector, respectively Supernatants (30 g) of the cell lysates...

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ANALYSIS OF MICROBIAL COMMUNITY STRUCTURE AND IN SITU ACTIVITY OF NITRIFYING BIOFILMS

Ngày tải lên : 05/09/2013, 08:40

... organization of nitrifying bacterial populations and the in situ activity of these populations within the biofilms was discussed Microsensors For analysis of microbial structure and function (activity) of ... only net chemical profiles, and the spatial resolution is also above a single-cell level To address the question of the higher abundance and activity of SRB in oxic zones of biofilms (Okabe et al., ... performed Fixation and Cryosectioning of Biofilm Samples Biofilm samples were taken at regular time intervals during the periods of the biofilm development The biofilm samples were fixed with freshly...

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Photocatalytic bactericidal activity of silver-sensitized titanium dioxide on Micrococcus lylae

Ngày tải lên : 05/09/2013, 09:08

... complexity of cell wall Silver ion (Ag+) is a bactericidal agent (Pedahzur et al., 1995) The binding of Ag+ and respiratory enzymes initiates changes in permeability of plasma membranes of bacteria ... standard deviation of independent triplicates - 49 - Journal of Water and Environment Technology, Vol.3, No.1, 2005 Effect of Ag content in photocatalysts Bactericidal activities of the three photocatalysts ... deviation of independent triplicates - 50 - Journal of Water and Environment Technology, Vol.3, No.1, 2005 Increasing the concentration of photocatalysts did not increase the bactericidal activity...

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Tài liệu Báo cáo khoa học: Multi-targeted activity of maslinic acid as an antimalarial natural compound pdf

Ngày tải lên : 14/02/2014, 14:20

... structure of the available inhibitors of cathepsin D [19], a lysosomal protease of mammalian cells, and chalcones and phenothiazines have been assayed as inhibitors of falcipain-2 [20,21] Inhibition of ... Discussion Inhibition of proteases by MA It has been previously proposed that MA may inhibit the activity of proteases of T gondii [14] and HIV [12,31] To ascertain the inhibition range of MA on the different ... proteolytic hydrolysis of haemoglobin as a source of amino acids constitutes one of the essential processes which take place along the intra-erythrocytic stage of the parasite Degradation of haemoglobin...

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Tài liệu Báo cáo khoa học: Intrinsic GTPase activity of a bacterial twin-arginine translocation proofreading chaperone induced by domain swapping ppt

Ngày tải lên : 16/02/2014, 09:20

... hydrolytic activity towards ATP (Fig 1A) The binding of a magnesium cofactor has long been established as essential for the activity of canonical GTP-binding proteins [29,31] The precise role of Mg2+ ... determine the requirement for magnesium of the GTPase activity of TorD, the reaction was performed in varying amounts of MgCl2 (Fig 1B) The GTPase activity of TorD without added MgCl2 is negligible, ... co-ordination of the two distinct functions of TorD with the folding of TorA and possible interactions of both proteins with the MGD biosynthetic apparatus [12] The concentration of GTP in the cytoplasm of...

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Tài liệu Báo cáo khoa học: The ubiquitin ligase Itch mediates the antiapoptotic activity of epidermal growth factor by promoting the ubiquitylation and degradation of the truncated C-terminal portion of Bid ppt

Ngày tải lên : 16/02/2014, 09:20

... activity by measuring degradation of the Ac-DEVD-pNA peptide (right panel) The graphs represent average cell survival as a percentage of the control and the average fold increase of caspase activity ... induce caspase activity and cleavage of Bid in tBid [30] In our hands, treatment of HEK-293T cells with 200 ngÆmL)1 TRAIL for h led to a signiﬁcant loss of cell viability (33.1 ± 3.3% of control; ... between the proteins BRET ratios were plotted as a function of the excited GFP activity to total rLuc activity ratio, allowing comparison of BRET ratios between Bid–GFP and tBid–GFP when expressed...

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Tài liệu Báo cáo khoa học: Autolytic activity of human calpain 7 is enhanced by ESCRT-III-related protein IST1 through MIT–MIM interaction pptx

Ngày tải lên : 18/02/2014, 04:20

... detected in the case of mGFP–calpain 7C290S, suggesting that the degradation was caused by proteolytic activity of mGFP–calpain itself We refer to this issue later Effects of mutations of IST1 MIMs on ... interaction enhances the autolytic activity of mGFP– calpain 7–Strep in vitro Autolytic properties of mGFP–calpain 7–Strep We further characterized the autolytic activity of mGFP–calpain 7–Strep Puriﬁed ... but not by GST–MIML326D,L353A or GST Enhancement of autolytic activity of mGFP– calpain by calpain 7–IST1 interaction As shown in Fig 3, expression of mGFP–calpain in HEK293T cells generated 45...

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