Determination of each constituent in mixtures of catechol and protocatechuic acid, quinol and gentisic acid, phenol and p-hydroxybenzoic acid, and pyrogallol and gallic acid

1969 ◽  
Vol 28 ◽  
pp. 139-149 ◽  
Author(s):  
D.J.W. Grant ◽  
J.C. Patel
Keyword(s):  
Gallic Acid ◽  
Protocatechuic Acid ◽  
Hydroxybenzoic Acid ◽  
Gentisic Acid

scholarly journals A New Noriridoid and Six Phenolic Compounds from Rhopalocnemis phalloides

2018 ◽  
Vol 13 (12) ◽  
pp. 1934578X1801301 ◽  
Author(s):  
Nguyen Quang Hung ◽  
Nguyen Thi Luyen ◽  
Nguyen The Cuong ◽  
Tran Huy Thai ◽  
Nguyen Thanh Tung ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Phenolic Compounds ◽  
Gallic Acid ◽  
Protocatechuic Acid ◽  
Inhibitory Effect ◽  
Spectroscopic Methods ◽  
Hydroxybenzoic Acid ◽  
Nitric Oxide Production ◽  
Oxide Production ◽  
The Family

A rare noriridoid and six known phenolic compounds were isolated from the parasite plant Rhopalocnemis phalloides. Using spectroscopic methods, these compounds were identified as 10-acetoxy- cis-2-oxabicyclo[4.3.0]nonan-7-en-3-one (1), p-hydroxybenzoic acid (2), protocatechuic acid (3), gallic acid (4), coniferyl aldehyde (5), l- O-trans-cinnamoyl-β-D-glucoside (6), and coniferin (7). The noriridoid compound is the first reported from the family Balanophoraceae. Of the isolated compounds, coniferyl aldehyde had the strongest inhibitory effect on nitric oxide production (IC50 = 8.24 μM).

scholarly journals DER ABBAU VON P-HYDROXYBENZOESAURE, PROTOCATECHUSAURE UND GALLUSSAURE IM BODEN

2016 ◽  
Vol 6 ◽  
Author(s):  
Christian Kunze
Keyword(s):  
Gallic Acid ◽  
Phenolic Acids ◽  
Protocatechuic Acid ◽  
Hydroxybenzoic Acid ◽  
Microbial Decomposition ◽  
Oh Groups

The rate of decomposition of the three phenolic acids, p-hydroxybenzoic acid, protocatechuic acid and gallic acid, whose difference is the amount of OH-groups, was investigated in the soil. With the increase in OH-groups increases the rate of microbial decomposition. Gallic acid decomposes faster than protocatecuic acid and this again faster than p-hydroxybenzoic acid.

scholarly journals Phenolic Contents of Different Potato Genotypes Grown in the Central Northern Region in Turkey

2021 ◽  
Vol 9 (8) ◽  
pp. 1606-1611
Author(s):  
Yasin Bedrettin Karan ◽  
Tarık Balkan ◽  
Ramazan Erenler
Keyword(s):  
Protocatechuic Acid ◽  
Solanum Tuberosum L ◽  
Northern Region ◽  
Major Product ◽  
Hydroxybenzoic Acid ◽  
Vegetable Crops ◽  
Chemical Analyses ◽  
Gentisic Acid ◽  
Phenolic Contents ◽  
The Third

Potato (Solanum tuberosum L.) is one of the most significant vegetable crops for humans along with corn, wheat, and rice. In this study, quantitative analysis of phenolic compounds was carried out for 21 promising potato clones and three commercial cultivars. LC–MS/MS was used for the chemical analyses. The TOGU 3/518 clone had the highest level of 4-hydroxybenzoic acid as 138.51 ± 7.35 µg/kg. TOGU 12/29 and TOGU 2/198 clones, on the other hand, had 126.24 ± 2.29 and 125.29 ± 2.74 µg/kg of 4-hydroxybenzoic acid, respectively. Salicylic acid which is a pharmaceutically significant compound was found in TOGU 3/518 clone (125.66 ± 11.51 µg/kg) as a major product. This compound was also found in TOGU 2/198 (111.27 ±1.31 µg/kg) and TOGU 12/29 clones (111.07 ± 3.68 µg/kg) as the third and fourth most abundant. In terms of caffeic acid, TOGU 3/110 clone contained the highest level (42.50 ± 3.73 µg/kg). While TOGU 7/146 clone included the most protocatechuic acid (53.98 ± 1.47 µg/kg), TOGU 3/480 clone consisted of most gentisic acid (30.79 ± 0.51 µg/kg). Quercetin, an important flavonoid found many aromatic and medicinal plants, was highest in TOGU 12/29 clone (6.27 ± 0.15 µg/kg).

A Phenol Glucoside, Uncommon Coumarins and Flavonoids from Pelargonium sidoides DC

2005 ◽  
Vol 60 (6) ◽  
pp. 677-682 ◽  
Author(s):  
Tanja Gödecke ◽  
Maki Kaloga ◽  
Herbert Kolodziej
Keyword(s):  
Gallic Acid ◽  
Protocatechuic Acid ◽  
Spectroscopic Studies ◽  
Structural Examination ◽  
Pelargonium Sidoides ◽  
Aerial Parts ◽  
Metabolic Pool ◽  
Circular Dichroïsm ◽  
New Metabolites

Structural examination of the metabolic pool of the aerial parts of Pelargonium sidoides DC has led to the isolation of two new metabolites, 4-allyl-2,5-dimethoxyphenol-1-β -D-glucopyranoside and 6,7-dihydroxycoumarin-8-sulfate, along with a series of uncommon compounds including (2R,3R)-(+)-dihydroquercetin-3-β -glucopyranoside, (2R,3R)-(+)-dihydrokaempferol-3-β - glucopyranoside, fraxetin-7-β -glucopyranoside, 7-methoxycoumarin-6-β -glucopyranoside, umckalin, orientin-2”-gallate, and isoorientin-2”-gallate. They are accompanied by the widespread isoorientin, orientin, fraxetin, (2R,3S)-epigallocatechin-3-gallate, gallic acid and protocatechuic acid. The structures of the compounds were established from spectroscopic studies. Determination of configurations was achieved by circular dichroism.

Quantitative Determination of Gallic acid and Cyanidin-3-O-Glucoside within Sumac Extracts by HPLC-MS/MS

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
M Koşar ◽  
F Göger ◽  
N Kırımer ◽  
KHC Başer
Keyword(s):  
Quantitative Determination ◽  
Gallic Acid
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