Results 71 to 80 of about 16,350,711 (297)

The use of microorganisms in L-ascorbic acid production

, 2006
L-Ascorbic acid has been industrially produced for around 70 years. Over the past two decades, several innovative bioconversion systems have been proposed in order to simplify the long time market-dominating Reichstein method, a largely chemical ...
Bremus, C., Bringer-Meyer, S., Sahm, H., Herrmann, U.   +3 more
core   +1 more source

Defect‐Driven Charge Separation in Ba‐Doped SrTiO3: Correlating Photoelectrochemical Performance With Dye‐Selective Photocatalysis

Advanced Materials Interfaces, EarlyView.
Ba‐doped SrTiO3 perovskites establish a direct correlation between photoelectrochemical activity and photocatalytic performance. Optimized Ba0.5Sr0.5TiO3 exhibits enhanced charge separation, photocurrent generation, and visible‐light‐driven dye degradation through defect‐induced oxygen vacancies and lattice distortion.
Sagar A. Nikam, Somnath Ladhane, Vikas P. Mhaske, Gotan H. Jain, Sandesh R. Jadkar, Shashikant P. Patole, Ganesh E. Patil   +6 more
wiley   +1 more source

Spectrophotometric Determination of L-Ascorbic Acid in Pharmaceuticals Based on Its Oxidation by Potassium Peroxymonosulfate and Hydrogen Peroxide

Croatica Chemica Acta, 2015
Two new, accurate, precise, and sensitive spectrophotometric methods were developed for the assay of L-ascorbic acid in pharmaceutical preparations. The determination of L-ascorbic acid was based on its oxidation by potassium peroxymonosulfate (method ...
Mirsad Salkić, Amra Selimović
doaj   +1 more source

Metal Compound‐Based Non‐Enzymatic Electrochemical Cholesterol Sensors: Emerging Materials and Mechanistic Insights

Advanced Materials Interfaces, EarlyView.
This review discusses recent progress in metal complex‐based, non‐enzymatic electrochemical sensors for cholesterol detection. We examine metal oxides, metal sulfides, and hybrid nanomaterials, highlighting their catalytic mechanisms and material design strategies.
Longfei (Jack) Yin, Chao‐Tsen (Rora) Chen, Jacopo Giaretta, Thanh‐Qua Nguyen, Hoang‐Phuong Phan, Fariba Dehghani, Syamak Farajikhah   +6 more
wiley   +1 more source

Studies on L-Ascorbic Acid Derivatives. II. L-Ascorbic Acid 3-Phosphate and 3-Pyrophosphate

Chemical and Pharmaceutical Bulletin, 1969
Phosphorylation of 5, 6-isopropylidene-L-ascorbic acid with phosphorus oxychloride gave mainly a mixture of four phosphates. Column chromatography on Dowex-1-bicarbonate with a solution of sodium bicarbonate as a developer was found suitable for the separation of these phosphates for the preparative purpose.
NOMURA, HIROAKI, ISHIGURO, TOSHIHIRO, MORIMOTO, SHIRO   +2 more
openaire   +2 more sources

Reduced Graphene Oxide Enhances the Vascular Organization and Contractile Performance of Fibrin‐Gelatin‐Based Engineered Cardiac Tissue

Advanced Materials Interfaces, EarlyView.
Fibrin–gelatin hydrogels functionalized with reduced graphene oxide create a mechanically stable and bioactive 3D environment for engineered cardiac tissue. The composite matrix promotes endothelial lumen formation, enhances sarcomeric protein expression, and increases contractile performance of embedded cardiomyocytes.
Christoph Kuckelkorn, Marie Baiker, Yajuan Jiang, Ebru Aksoy, Kurt Pfannkuche, Horst Fischer   +5 more
wiley   +1 more source

Effects of ascorbic acid and glucose oxidase levels on the viability of probiotic bacteria and the physical and sensory characteristics in symbiotic ice-cream

Mljekarstvo, 2015
In this study, the effects of addition of different amounts of ascorbic acid and glucose oxidase on the properties of symbiotic ice cream were investigated.
M. B. Akın, F. Dasnik
doaj   +1 more source

3D‐Printed Dual‐Doped Ag2Se‐Based Thermoelectric Films With Enhanced Thermal Stability

Advanced Materials Technologies, EarlyView.
Sb–Se dual doping enhances the thermal stability of Ag2Se‐based thermoelectric systems. The compositionally tuned nano‐ink is printed into flexible films by direct ink writing (DIW), retaining improved thermoelectric properties after annealing up to 400°C.
Ahasun Habib Hridoy, Nishat Paul, Naimul Arefin, Axel Lopez, Peiran Wei, Brandon Dumars, Yan Chen, Mortaza Saeidi, Minxiang Zeng   +8 more
wiley   +1 more source

Impact of Natural stimulates and Antioxidant compounds on fruit quality and quantity of pomegranate trees cv. H116 [PDF]

BIO Web of Conferences
This experiment was carried out during two seasons (2022 and 2023) to examine the effect of spraying pomegranate trees cv. H116 with extract algae at (2cm/l), salicylic acid at (0.5 g/l) and ascorbic acid at (0.5 g/l) either alone or in combination ...
Elhady Eman S., Sushkova Liudmila O., Hagagg Laila F., Shahin M.F.M., Farahat Esraa M.M.   +4 more
doaj   +1 more source

QUANTIFICATION OF L-ASCORBIC ACID AND D-ISO-ASCORBIC ACID IN JELLIES FRUIT BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY [PDF]

, 2015
QUANTIFICATION OF L-ASCORBIC ACID AND D-ISO-ASCORBIC ACID IN JELLIES FRUIT BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY. Ascorbic acid has important nutritional characteristics such as high antioxidant potential, preventing diverse damage and diseases in ...
de Oliveira, RG, Godoy, HT, Prado, MA
core