from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Related to protocatechuic acid, protocatechuic aldehyde or their derivatives
from the GNU version of the Collaborative International Dictionary of English
- adj. Pertaining to, derived from, or designating, an organic acid which is obtained as a white crystalline substance from catechin, asafetida, oil of cloves, etc., and by distillation itself yields pyrocatechin.
from The Century Dictionary and Cyclopedia
- Derived from catechol.
Lowe and Schiff (_loc.cit. _) have obtained products similar to tannins, the latter investigator by removing the elements of water from gallic acid, protocatechuic acid, salicylic acid, _m_-hydroxybenzoic acid, cresotinic acid, phloretinic acid, and pyrogallolcarboxylic acid.
With the introduction of the carboxylic group the tendency of condensation to diphenylmethane derivatives is lessened; by protocatechuic acid the tendency is nil.
The burning taste is due to a resin that produces protocatechuic acid when melted with potassa.
Reduction in acrylamide formation was observed to be at its best during the initial stage of heating - where it was seen to reach up to 70 per cent for trolox, gallic acid and protocatechuic acid and up to 50 per cent for ferulic and caffeic acid.
Given that acrylamide formation was very low at 115 oC, a temperature of 125oC was chosen to examine the effects of phenolic compounds (trolox, ferulic acid, gallic acid, protocatechuic acid and caffeic acid) on acrylamide formation.
Its main active ingredients were found to be protocatechuic aldehyde for diminishing inflammation and chlorogenic acid for bacteria and virus control.
Roselle calyx extracts and protocatechuic acid could be potent agents in the prevention of food contamination by spoilage bacteria, claims a new study in a forthcoming issue of the journal Foodborne Pathogens and Disease.
And, according to the findings, the antibacterial activity of roselle calyx ethanol extract and protocatechuic acid was not affected by heat treatments from 25°C to 75°C and 25°C to
The researchers said they examined the antibacterial effects of the extracts coupled with protocatechuic acid against the five bacteria in ground beef and apple juice.
Roselle calyx extracts or protocatechuic acid at 5 or 10 mg was mixed with 100g of ground beef or 100mL of apple juice, while a control group was also set up that contained neither roselle calyx extracts nor protocatechuic acid.
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