Advanced searches left 3/3

Acid Ascorbic Antioxidant - Europe PMC

Summarized by Plex Scholar
Last Updated: 12 November 2022

* If you want to update the article please login/register

Purification, physico-chemical properties and antioxidant activity of polysaccharides from Sargassum fusiforme by hydrogen peroxide/ascorbic acid-assisted extraction.

Six extraction techniques, including hot water extraction, acid-assisted extraction, ultrasonic-assisted extraction, and hydrogen peroxide/assisted extraction were compared to SFP extraction, including hot water extraction, efficient extraction, and biological activities, were compared for the preparation of SFP. SFP3 and H-SFP5 were purified by cellulose DEAE-52 ion-exchange chromatography, yielding two purified fractions, namely H-SFP3 and H-SFP5. In H2O2-induced oxidative stress RAW264. 7 cells, these polysaccharide fractions were also found to reduce the reactive oxygen species level and increase the superoxide dismutase activity.

Source link: https://europepmc.org/article/MED/36356868


Exogenous foliar ascorbic acid applications enhance salt-stress tolerance in peanut plants throughout an increase in the activity of major antioxidant enzymes

Although ascorbic acid is an antioxidant that can shield plants from oxidative damage, no information is available about exogenous AsA-regulated antioxidant systems to stress-conditions in peanut plants. This research was designed to determine the effects of AsA-foliar applications on antioxidant response in peanut plants irrigated with saline water. AsA application was carried out twice a week during a spraying plant shoot. Hence, the exogenous use of AsA can help reduce or avoid stress caused by salt, which can be attributed to increased SOD, CAT, APX, GSH-Px, and GR activities in peanut plants, as well as improve salt tolerance.

Source link: https://europepmc.org/article/MED/IND607873972


Foliar application of ascorbic acid enhances growth and yield of lettuce (Lactuca sativa) under saline conditions by improving antioxidant defence mechanism.

Lettuce production is low due to a variety of environmental stresses. Salad growth and yield are drastically reduced by salt stress. Foliar's use of ascorbic acid is considered as a potential way to reduce plant-specific salinity effects. In 2019, and 2020, leaf length and diameter, number of leaves, fresh plant weight, number of roots, root length, and root dry weight were all reduced by foliar application of ascorbic acid, ascorbic acid concentrations increased. This current study looked at the impact of foliar spray of ascorbic acid to reduce negative effects of salinity in lettuce plants. Ascorbic acid-added superoxide dismutase content in lettuce plants increased in two salinity ratios, u00d7400 mg/L. Perenase content in 200 mgMNaCl and 400 mg/L ascorbic acid increased in 200 million MNaCl and 400 mg/L ascorbic acid. Ascorbic acid was much higher in 200mMNaCl and 400 mg/L ascorbic acid. We conclude that ascorbic acid may have the ability to counter salinity's adverse effects by minimizing oxidative damage in agricultural crops, especially lettuce.

Source link: https://europepmc.org/article/MED/36167606


Supplementation with uric and ascorbic acid protects stored red blood cells through enhancement of non-enzymatic antioxidant activity and metabolic rewiring.

As generative sources of red blood cells' functional and functional degradation during their hypothermic storage at blood banks, redox imbalance and oxidative stress have arisen. According to the present study, the goal of the present study was to determine whether the antioxidant enhancement of stored RBC units following uric and/or ascorbic acid supplementation can improve their storage stability, as well as post-transfusion phenotypes and recovery by using in vitro and animal models. Each unit of 4 satellite units was aseptically split in 4 satellite units each for this purpose. 34 leukoreduced CPD/SAGM RBC units were aseptically split in 34 leukoreduced CPD/SAGM RBC units were aseptically split in 4 satellite units each for this purpose. In the other two groups, higher amounts of GSH were reported to be obtained by distinct metabolic rewiring in the modified units: methionine-cysteine metabolism in UA samples and glutamine production in the other two groups. The current research provides a comprehensive review of the effect of UA/AA administration on stored RBCs as well as insights into the role of differential metabolic rewiring when specific antioxidant "enhancers" are used.

Source link: https://europepmc.org/article/MED/36155342


Determination of Antioxidant Capacity and Total Phenolic and Ascorbic Acid Contents of Some Fruits and Vegetables with an Electrochemical Approach

Using an electrochemical approach and their compatibility with conventional methods, apricot, arugula, banana, cranberry, spinach, and strawberry's antioxidant capacity, total phenolic and ascorbic acid contents were tested with an electrochemical approach and their compatibility with conventional methods. Total phenolic content was determined by ABTS and DPPH assays, total phenolic content was determined by the Folin Ciocalteu method, which are spectrophotometric methods, and ascorbic acid was quantified by HPLC methods, and ascorbic acid was quantified by HPLC methods. The surface of the glassy carbon electrode was modified by electropolymerization of p -toluene sulfonic acid in order to perform more precise and simultaneous measurements in electrochemical measurements. For the first time in the determination of antioxidant capacity and total phenolic content, the TSA/GCE upgraded sensor was used. In a phosphate buffer solution pH 7. 4 supporting electrolyte solution, the TSA/GCE sensor was linearly correlated with the DPV technique for Trolox and gallic acid in 0. 1 M NaNO3 and ascorbic acid.

Source link: https://europepmc.org/article/PPR/PPR543266


Antioxidant Potential of Santowhite as Synthetic and Ascorbic Acid as Natural Polymer Additives.

Using computational techniques, the antioxidant potential and therefore the applicability of Santowhite as both synthetic and ascorbic acid as natural AAs were investigated in this study. M05-2X and M06-2X, two density functional theory techniques, have been used in combination with the 6-311++G base set in gas phase, as well as the 6-311++G base set in gas phase. According to the findings, Asc's antioxidant capacity is higher than SW. In addition, some of the C-H bonds, depending on their position in the system, are potent radical scaggers, but O-H groups are more likely to donate H-atoms to free radicals.

Source link: https://europepmc.org/article/MED/36080595

* 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