Tìm thấy 11+ kết quả cho từ khóa "Antioxidant capacities"
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The total antioxidant capacities of unripe and ripe bitter melon samples, determined by using the CUPRAC (cupric reducing antioxidant capacity assay) and ABTS (2,2′-azino-bis(3-ethylbenzthiazolin-6-sulfonic acid))/HRP (horseradish peroxidase) methods, were 42.5 and 36.3 µmol TRE (Trolox equivalent) g –1 , and 8.7 and 7.0 µmol TRE g –1 , respectively.
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The leaf of the plant has been proven to have antioxidant, antidiabetic, antilipidemic, anti-inflammatory, antitumor, and. cochinchinensis leaves [8]. cochinchinensis leaves.. Thus, this study will proceed to determine the anti- inflammatory and antioxidant capacities of S. The stock solutions of the dried powdered material were prepared for flavonoids and saponins.
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Besides, we examined the antioxidant capacities and radical scavenging activities of the free thiosemicarbazones and nickel(II) complexes in vitro assays for summarize their biochemical properties..
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Expression profiles of functional genes involved in the flavonoid biosynthesis pathways of Myrica rubra and correlations with total flavonoid contents and total antioxidant capacities. Expression profiles of functional genes involved in the anthocyanin biosynthesis pathways of Myrica rubra and correlations with total flavonoid contents and total antioxidant capacities.
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It is considered that at least two assays should be applied in assessing the antioxidant capacities of samples (Kamiloglu et al., 2015), because each method has a different reaction mechanism to exert an antioxidant effect (Karadag et al., 2009). Therefore, in our study, four different assays were employed, and the antioxidant capacities of the J. In the study by El-Ghorab et al. The ABTS radical scavenging capacity of the berry was determined as mg TE/g. Orhan et al.
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Phytochemicals and antioxidant activity of milled fractions of different wheat varieties.. Estimation of total flavonoid content in propolis by two complementary colorimetric methods. Distribution of phenolic compounds in the graded flours milled from whole buckwheat grains and their antioxidant capacities. Phytochemical compositions, antioxidant properties, and antipro- liferative activities of wheat flour. Antioxidant and free radical scavenging activities of whole wheat and milling fractions.
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The accession ‘Ciamis’ and ‘Bogor-1’ of cardamom fruits were well-known highest TFC and antioxidant capacities.. Carda- mom spice is produced from the part of fruits and can be used as whole, ground, or extract in the food (Anwar et al., 2016).
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On the other hand, bromo-substituted 4b displayed the least antioxidant capacity (Figure 4).. EC 50 values of derivatives were calculated as the concentration ( µg/mL) exhibiting 50% inhibition of the ABTS radical. In the ABTS assay, the measured antioxidant capacities of hydrazone derivatives were compared with Trolox and they were predicated as the ratio of µ g trolox/µ g derivated hydrazone.
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In vitro antioxidant activity. In the current study, two widely used antioxidant test methods were used for the determination of antioxidant capacities of the synthesized compounds 7a–k, 8a–k, and 9a–k.. The DPPH • radical scavenging test has been used extensively for various types of samples including synthetic compounds (Figure 2).
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The antioxidant capacities of the pomelo peel extracts measured by the DPPH scavenging activity and expressed as IC 50 values are given in Table 6. of the DPPH radical. The lower the IC 50 value is, the higher the antioxidant activity of the extract. The IC 50 values of the citrus peel extracts ranged from 1.08 to 4.51 μg/ml, which is significantly higher than that of the Trolox μg/ml).
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Three methods, namely radi- cal scavenging, metal chelating, and reducing power assays, were used to define the antioxidant capacities of the compounds. In addition, antibacterial properties and DNA binding activities of the compounds were studied..
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Antioxidant capacities of various fruit extracts from three varieties of tomato and correlation with total phenolic, flavonoid, car- otenoid content. Garcia, E., Barrett, D.M., 2006. Assessment of the antioxidant properties of tomato extracts: a synergistic approach using in vitro che- mical tests and cell-based assays. Goula, A.M., Adamopoulos, K.G., Chatzitakis, P.C., Nikas, V.A., 2006. Prediction of ly- copene degradation during a drying process of tomato pulp.
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The free radical scavenging capacities of the compounds were also tested in vitro determining the interaction of the stable free radical 2,2,diphenyl- 1-picrylhydrazyl (DPPH), and compounds 4a and 4b exhibited good antioxidant activities.. Impair- ment of the antioxidants and antioxidant systems could be related to increased oxidative stress.
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On the other hand, all of the tested compounds displayed somewhat lower reducing power compared to the tested well-known antioxidant standards (ascorbic acid and BHT) at all concentrations. Reducing power capacities of all Pc compounds tested increased with increasing concentrations (Figure 3).. Reducing power of the compounds..
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Antioxidant activity of all of the molecules was determined according to a reported procedure [26,27] as described in the experimental literature, with minor modifications. It can be assumed that the hydrogen losing capacities/abilities or structurally stable radical creation after the interaction of the compounds with DPPH free radicals is related to the antioxidant activity of the molecule being studied [36]. UV–Vis spectrum of compound 5 in DMSO..
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Faculty of Agriculture, Ain Shams University. antioxidant phenolics Murthy et al. (2002) and Ozgen et al.. Pomegranate peel is recognized for its many health- promoting qualities and apparent wound-healing properties (Chidambara et al., 2004), anticancer property (Jeune et al., 2005), antiatherosclerotic and antioxidative capacities (Tzulker et al., 2007)..
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Correlation between physicochemical characteristics and binding capacities of chitosan products. Microwave mediated rapid synthesis of chitosan. Growth inhibitory effect on bacteria of chitosan membranes regulated with deacety- lation degree. On the influence of deacetylation process on the physicochemical characteristics of chitosan from squid chitin.. Chitosan as a lipid binder: a Langmuir monolayer study of chitosan–lipid interactions.. Antioxidant properties of chitosan from crab shells
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Differences at the gene level, particularly in the CODH-NiFe hydrogenase loci, may also contribute to the disparity in the hydroge- nogenic capacities of the P. Variation in the CODH-hydrogenase locus of hydrogenogenic and non-hydrogenogenic P.. In order to further distinguish genomic differences underlying the divergent hydrogenogenic capacities of the four P.
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Naphthoxazoles and heterobenzoxazoles: cholinesterase inhibition and antioxidant activity. In this study we evaluated cholinesterase inhibitory and antioxidant activity of seven oxazole derivatives. They have also been tested for antioxidant activity, but never for cholinesterase inhibitory activity.
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the fermentation products and enhance the antioxidant activity in cell .