scholarly journals Selective oxidation of uronic acids into aldaric acids over gold catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19502-19507 ◽  
Author(s):  
Sari Rautiainen ◽  
Petra Lehtinen ◽  
Jingjing Chen ◽  
Marko Vehkamäki ◽  
Klaus Niemelä ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Building Block ◽  
Gold Catalyst ◽  
Uronic Acids ◽  
Mild Conditions ◽  
Aldaric Acids

Uronic acids available from hemicelluloses were oxidized into aldaric acids, valuable building block chemicals. Au/Al2O3 oxidized glucuronic and galacturonic acids quantitatively to the corresponding glucaric and galactaric acids at mild conditions.

Pyrone Synthesis from Renewable Sources: Easy Preparation of 3-Acetoxy-2-oxo-2H -pyran-6-carboxylic Salts and their Derivatives as 3-Hydroxy-2H -pyran-2-one from C6 Aldaric Acids

2020 ◽  
Vol 2020 (2) ◽  
pp. 241-251 ◽  
Author(s):  
Gabriella Leonardi ◽  
Jiemeng Li ◽  
Grazia Isa C. Righetti ◽  
Ada M. Truscello ◽  
Cristian Gambarotti ◽  
...  
Keyword(s):  
Renewable Sources ◽  
Aldaric Acids

Synthesis, characterisation and degradability of polyamides derived from aldaric acids and chain end functionalised polydimethylsiloxanes

Polymer ◽  
2004 ◽  
Vol 45 (21) ◽  
pp. 7053-7059 ◽  
Author(s):  
Dirk Henkensmeier ◽  
Bors Cajus Abele ◽  
Anton Candussio ◽  
Joachim Thiem
Keyword(s):  
Aldaric Acids

scholarly journals A facile synthesis in aqueous medium of 3-hydroxy-2-pyrone from aldaric acids or their derivatives

2022 ◽  
pp. 100280
Author(s):  
Gabriella Leonardi ◽  
Ada Truscello ◽  
Giovanni G. Mondrone ◽  
Roberto Sebastiano
Keyword(s):  
Aqueous Medium ◽  
Facile Synthesis ◽  
Aldaric Acids

scholarly journals HYDROLYTIC OXIDATION OF CELLOBIOSE IN THE PRESENCE OF A Pt-CONTAINING POLYMERIC CATALYST

2021 ◽  
pp. 7-17
Author(s):  
Олег Викторович Манаенков ◽  
Ольга Витальевна Кислица ◽  
Валентина Геннадьевна Матвеева ◽  
Евгений Владимирович Антонов ◽  
Екатерина Алексеевна Раткевич
Keyword(s):  
Chemical Synthesis ◽  
Direct Conversion ◽  
Hypercrosslinked Polystyrene ◽  
Plant Polysaccharides ◽  
Polymeric Catalyst ◽  
Aldaric Acids

В данной работе приводятся результаты исследования процесса гидролитического окисления целлобиозы (4-(β-глюкозидо)-глюкозы) в присутствии гетерогенного Pt-содержащего катализатора на основе мезопористой матрицы сверхсшитого полистирола (СПС). Исследования процессов гидролитического окисления дисахаридов являются первым шагом к разработке технологий прямой конверсии растительных полисахаридов, в первую очередь, целлюлозы, в альдоновые и альдаровые кислоты, широко использующиеся в химическом синтезе и различных областях промышленности. This work presents the results of a study of the process of hydrolytic oxidation of cellobiose (4- (β-glycoside) -glucose) in the presence of a heterogeneous Pt-containing catalyst based on a mesoporous matrix of hypercrosslinked polystyrene (HPS). Studies of the processes of hydrolytic oxidation of disaccharides are the first step towards the development of technologies for the direct conversion of plant polysaccharides, primarily cellulose, into aldonic and aldaric acids, which are widely used in chemical synthesis and various industries.

scholarly journals Oxidation of Aldoses Contained in Softwood Hemicellulose Acid Hydrolysates into Aldaric Acids under Alkaline or Noncontrolled pH Conditions

2018 ◽  
Vol 57 (13) ◽  
pp. 4543-4552 ◽  
Author(s):  
Elie Derrien ◽  
Mohammed Ahmar ◽  
Emilie Martin-Sisteron ◽  
Guy Raffin ◽  
Yves Queneau ◽  
...  
Keyword(s):  
Ph Conditions ◽  
Aldaric Acids

Utilization of tartaric acid and related compounds by yeasts: taxonomic implications

1992 ◽  
Vol 38 (12) ◽  
pp. 1242-1251 ◽  
Author(s):  
Alvaro Fonseca
Keyword(s):  
Tartaric Acid ◽  
Sole Source ◽  
Glucaric Acid ◽  
Mucic Acid ◽  
Number Of Species ◽  
Comprehensive Survey ◽  
Taxonomic Implications ◽  
Ascomycetous Yeasts ◽  
Aldaric Acids ◽  
Related Compounds

A survey of yeasts capable of growing on L(+)-tartaric acid as the sole source of carbon and energy showed that this organic acid is assimilated by a significant number of species of basidiomycetous affinity and is seldom utilized by ascomycetous yeasts. This conclusion was further supported by the fact that among approximately 100 isolates from various natural substrates, using selective media with L(+)-tartaric acid, only one strain of ascomycetous affinity was obtained. In a more comprehensive survey 442 yeast strains belonging to 138 species, mostly of basidiomycetous affinity, were also screened for the assimilation of different aldaric acids: D(−)-tartaric acid, meso-tartaric acid, L(−)-malic acid, D(+)-glucaric acid (saccharic acid), and galactaric acid (mucic acid). L(+)-Tartrate was the most frequently utilized tartaric acid isomer (55% of the total number of strains of basidiomycetous affinity belonging to either the Tremellales/Filobasidiales or the Ustilaginales) when compared with the D(−) and meso forms, which were assimilated by 12 and 18% of the total number of strains, respectively (mainly of tremellaceous species). Saccharic acid was utilized by about 75% of the total number of species of Tremellales affinity and by less than 20% of the ustilaginaceous species. Assimilation of mucic acid occurred in more than 50% of the tremellaceous species and only in 5% of the species related to the Ustilaginales. These tests, not used in standard yeast identification sets, appear to contribute to distinguishing taxa at or above the species level. Key words: assimilation, tartaric acid, aldaric acids, yeasts, taxonomy.

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