Results 31 to 40 of about 167,391 (266)

Impact of Ascorbic Acid on Zero-Valent Iron Nanoparticle and UV-B Mediated Stress in the Cyanobacterium, Fremyella diplosiphon

open access: yesMicroorganisms, 2023
Fremyella diplosiphon is an ideal third-generation biofuel source due to its ability to produce transesterified lipids. While nanofer 25s zero-valent iron nanoparticles (nZVIs) improve lipid production, an imbalance between reactive oxygen species (ROS ...
LaDonna Wyatt   +3 more
doaj   +1 more source

Comparative analysis of ascorbic acid in human milk and infant formula using varied milk delivery systems

open access: yesInternational Breastfeeding Journal, 2008
Background The expression of human milk for later use is on the rise. Bottle systems are used to deliver the expressed milk. Research has shown that storage of both human milk and artificial baby milk, or infant formula, leads to a loss of ascorbic acid (
Dickton Darby   +4 more
doaj   +1 more source

Impact of Exogenous Ascorbic Acid on Antioxidant Activity and Some Physiological Traits of Common Bean Subjected to Salinity Stress

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2009
The role of ascorbic acid as a key molecule antioxidant involves in biotic and abiotic stress has already been well described. Recent study indicates that it also participates in the detoxification of generated reactive oxygen species due to abiotic ...
Aria DOLATABADIAN   +1 more
doaj   +1 more source

Ascorbic acid increases demethylation in somatic cell nuclear transfer embryos of the pig () [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2017
Objective Investigated the effect and mechanism of ascorbic acid on the development of porcine embryos produced by somatic cell nuclear transfer (SCNT).
Minghui Zhao   +6 more
doaj   +1 more source

Changes in hematological parameters, plasma cortisol, and acetylcholinesterase of juvenile rockfish, Sebastes schlegelii supplemented with the dietary ascorbic acid

open access: yesAquaculture Reports, 2016
Juvenile rockfish (mean length 13.6 ± 1.4 cm, and mean weight 53.6 ± 4.2 g) were fed diets containing different levels of ascorbic acid (0, 50, 100, 200, and 400 mg/kg) for 4 weeks. Fish were fed twice daily (08:30 and 18:30).
Jun-Hwan Kim, Ju-Chan Kang
doaj   +1 more source

APPLICATION OF MULTIVARIATE CALIBRATION AND DERIVATIVE ANALYSIS IN THE SPECTROPHOTOMETRIC DETERMINATION OF SOME ASCORBIC ACID PHARMACEUTICAL MIXTURES [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 2004
Two chemometric assisted spectrophotometric methods; multivariate calibration and zerocrossingfirst derivative analysis were applied for the determination of ascorbic acid (vitaminC) in its single pharmaceutical formulations and its simultaneous ...
Ibrahim Refaat
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

open access: yesFEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata   +13 more
wiley   +1 more source

Voltammetric Determination of Ascorbic Acid in Pharmaceutical Formulations Using Modified Iodine-Coated Platinum Electrode

open access: yesVitae, 2021
Background: Despite the high reactivity of the platinum electrode, the iodine-coated platinum electrode shows obvious inertness toward adsorption and surface processes.
Mohammad Amayreh   +2 more
doaj   +1 more source

Programming Nanoscale Reaction Environments via Peptide Localization for Gold Nanoparticle Growth in Liposomal Nanoreactors

open access: yesAdvanced Functional Materials, EarlyView.
The liposome nanoreactor method enables uniform metal nanoparticle synthesis using the interior as a reaction environment. We demonstrate that peptide sequences and lipid compositions act as a functional molecular switch to control reaction environments in liposome nanoreactors.
Yuya Abe   +6 more
wiley   +1 more source

Ascorbic Acid in Skin Health

open access: yesCosmetics, 2019
Ascorbic acid (vitamin C) is a water-soluble vitamin and a recognized antioxidant drug that is used topically in dermatology to treat and prevent the changes associated with photoaging, as well as for the treatment of hyperpigmentation. Ascorbic acid has
Soledad Ravetti   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy