Special issue on sporotrichosis: challenges to deal with the new emerging pathogenic species

Lópes-Bezerra, Leila M.; Almeida, Sandro Rogério de

doi:10.1007/s42770-021-00436-z

Cited by 2 publications

References 16 publications

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Optimisation of Catalytic Oxidation Conditions for the 2-Keto-L-Gulonic Acid Production Using Response Surface Methodology

Mutlu

Erbaş

2023

Preprint

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L-Ascorbic acid, also known as vitamin C, is a very important antioxidant ingredient and used in many industries. 2-keto-L-gulonic acid (2-KLG) is the main precursor of L-ascorbic acid production and it can be produced from L-sorbose via microbial fermentation or chemical (catalytic) oxidation. While some special strains are used in microbial fermentation, some catalysts are used in chemical oxidation. The aim of this research is to determine the optimum conditions by using the reaction temperature, pH value and time as the variable factors for the production of maximum 2-KLG content with the catalytic oxidation of L-sorbose in the presence of Pt/Al2O3 catalyst with response surface methodology approach. The limit values of variable factors were applied as 40, 50 and 60°C for the temperature; 7, 8 and 9 for the pH value and 3, 6 and 9 h for the time. According to the analyses results, the increasing time and temperature effected the conversion of L-sorbose into the 2-KLG negatively. The optimum conditions as regards the central composite design were determined as 41.30°C for the temperature, 8.23 for the pH and 3.25 h for the reaction time. Under these conditions L-sorbose was converted into 2-KLG with an average yield of 43.70%.

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Optimisation of Catalytic Oxidation Conditions for the 2-Keto-L-Gulonic Acid Production Using Response Surface Methodology

Mutlu

Erbaş

2023

Preprint

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Antimicrobial Activity of Brassica rapa L. Flowers Extract on Gastrointestinal Tract Infections and Antiulcer Potential Against Indomethacin-Induced Gastric Ulcer in Rats Supported by Metabolomics Profiling

Alotaibi

Mokhtar²,

El‐Masry

et al. 2021

JIR

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Special issue on sporotrichosis: challenges to deal with the new emerging pathogenic species

Cited by 2 publications

References 16 publications

Optimisation of Catalytic Oxidation Conditions for the 2-Keto-L-Gulonic Acid Production Using Response Surface Methodology

Optimisation of Catalytic Oxidation Conditions for the 2-Keto-L-Gulonic Acid Production Using Response Surface Methodology

Antimicrobial Activity of Brassica rapa L. Flowers Extract on Gastrointestinal Tract Infections and Antiulcer Potential Against Indomethacin-Induced Gastric Ulcer in Rats Supported by Metabolomics Profiling

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