Results 211 to 220 of about 7,977,034 (276)
Some of the next articles are maybe not open access.
Journal of Experimental Botany, 1953
SUMMARY 1. It is shown by means of filter-paper chromatograms prepared at intervals during the oxidation of quinic acid by hydrogen peroxide that at least six acids appear in the reaction liquid. 2. One of these acids is shown to be citric acid, and the oxidation of citric acid is shown to account for a further two of the acids resulting from the ...
A. C. HULME, W. ARTHINGTON
openaire +1 more source
SUMMARY 1. It is shown by means of filter-paper chromatograms prepared at intervals during the oxidation of quinic acid by hydrogen peroxide that at least six acids appear in the reaction liquid. 2. One of these acids is shown to be citric acid, and the oxidation of citric acid is shown to account for a further two of the acids resulting from the ...
A. C. HULME, W. ARTHINGTON
openaire +1 more source
A Concise, Enantioselective Approach to (−)-Quinic Acid
Organic Letters, 2006[reaction: see text] An expedient, enantioselective synthesis of a key precursor to (-)-quinic acid has been achieved from an ephedrine-derived morpholine-dione. The salient features of this approach are a highly diastereoselective conversion of the dione to a dialkenyl morpholinone and a subsequent ring-closing metathesis reaction.
Sunil V, Pansare, Vikrant A, Adsool
openaire +2 more sources
[Quinic acid lactone in coffee].
Zeitschrift fur Lebensmittel-Untersuchung und -Forschung, 1985Quinic acid and its lactone (quinide) have been determined in coffee by capillary gas chromatography. No quinide could be detected in 14 green coffee's. After steaming of 4 green coffee's the content of quinic acid was always higher, but no quinide had been formed. During roasting, the latter can be detected when roasting loss exceed 6.5%. It increases
J, Hucke, H G, Maier
openaire +2 more sources
, 2020
Carbon quantum dots (CQDs) have undergone extensive research and proved to have the potential to act both as drug delivery vehicles and imaging agents.
Shabnam Samimi +2 more
semanticscholar +1 more source
Carbon quantum dots (CQDs) have undergone extensive research and proved to have the potential to act both as drug delivery vehicles and imaging agents.
Shabnam Samimi +2 more
semanticscholar +1 more source
Journal of biochemical and molecular toxicology
Ulcerative colitis is a chronic inflammatory disease characterized by oxidative stress and the production of pro‐inflammatory cytokines. Ferulic acid and quinic acid, two phenolic compounds, are thought to have potent antioxidant and anti‐inflammatory ...
Mahsa Ekhtiar +3 more
semanticscholar +1 more source
Ulcerative colitis is a chronic inflammatory disease characterized by oxidative stress and the production of pro‐inflammatory cytokines. Ferulic acid and quinic acid, two phenolic compounds, are thought to have potent antioxidant and anti‐inflammatory ...
Mahsa Ekhtiar +3 more
semanticscholar +1 more source
Colorimetric assay of shikimic acid against quinic acid
Analytical Biochemistry, 1972Abstract Shikimic acid heated with p-hydroxybenzaldehyde and concentrated sulfuric acid produces an intense and stable purple-violet dye with absorption maximum at 590 nm, and can be quantitatively determined in the range from 15 to over 120 ng (0.1 to 0.7 μmole/ml). Under the same conditions quinic acid produces no color reaction. Shikimic acid can
T, Mossor, R W, Schramm
openaire +2 more sources
Microbial Pathogenesis
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) form biofilms that contribute to increased antimicrobial resistance, leading to treatment failure and/or relapse. It is, therefore, necessary to develop new antibiofilm strategies to eradicate
Borel Ndezo Bisso +3 more
semanticscholar +1 more source
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) form biofilms that contribute to increased antimicrobial resistance, leading to treatment failure and/or relapse. It is, therefore, necessary to develop new antibiofilm strategies to eradicate
Borel Ndezo Bisso +3 more
semanticscholar +1 more source
EXTRACTION OF SHIKIMIC AND QUINIC ACIDS
Chemical Engineering Communications, 1999Abstract Solvent extraction using an extractant/diluent system was evaluated for the recovery of shikimic and quinic acids. Tridodecylamine (TDA) was used as the extractant, and 1-heptanol as the diluent. TDA complexes with the acid resulting in an acid-amine complex, which is solvated by the alcohol diluent. In back extraction, oleic acid was added to
MARIAM SADAKA, ANTONIO GARCIA
openaire +1 more source
Xenobiotica, 1973
Abstract1. Hippuric acid (12·3% of the dose) and catechol (1·0% of the dose) were found as urinary metabolites when (-)-quinic acid (100 mg) was administered orally to rats. Neither protocatechuic acid nor vanillic acid was detected.2. No significant differences in the extent of urinary excretion of hippuric acid and catechol were found when the quinic
S R, Indahl, R R, Scheline
openaire +2 more sources
Abstract1. Hippuric acid (12·3% of the dose) and catechol (1·0% of the dose) were found as urinary metabolites when (-)-quinic acid (100 mg) was administered orally to rats. Neither protocatechuic acid nor vanillic acid was detected.2. No significant differences in the extent of urinary excretion of hippuric acid and catechol were found when the quinic
S R, Indahl, R R, Scheline
openaire +2 more sources