Consumption of ferulic and p-hydroxybenzoic acids by soybean root tips
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Hydroxylation and decarboxylation of hydroxybenzoic acids by Fe -chelates
4 2 containing FeSO and Na EDTA. EDTA could be replaced by citric acid. In this in vitro system 4hydroxybenzoic acid is hydroxylated to 3,4-dihydroxybenzoic acid (protocatechuic acid) and decarboxylated to hydroquinone. In an analogous reaction 2-hydroxybenzoic acid (salicylic acid) is hydroxylated to 2,3-dihydroxybenzoic acid and 2,5-dihydroxybenzoic acid (gentisic acid) and decarboxylated to ...
متن کاملINHIBITION OF ESCHERICHIA COLI BY p-AMINOBENZOIC ACID AND ITS REVERSAL BY p-HYDROXYBENZOIC ACID
p-Aminobenzoic acid (PABA) exerts three metabolic effects on E. coli: it acts as a normal vitamin at low concentrations, as a source of another vitamin, p-hydroxybenzoic acid (POB), at moderate concentrations, and as a growth inhibitor at high concentrations (150 to 1600 microg./ml.). The inhibition is competitively reversed by POB in 1/100 the concentration of PABA. The inhibition is also reve...
متن کاملSynthesis, Characterization, and Biological Studies of Organotin(IV) Derivatives with o- or p-hydroxybenzoic Acids
Organotin(IV) complexes with o- or p-hydroxybenzoic acids (o-H(2)BZA or p-H(2)BZA) of formulae [R(2)Sn(HL)(2)] (where H(2)L = o-H(2)BZA and R = Me- (1), n-Bu- (2)); [R(3)Sn(HL)] (where H(2)L = o-H(2)BZA and R = n-Bu- (3), Ph- (4) or H(2)L = p-H(2)BZA and R = n-Bu- (5), Ph- (6)) were synthesized by reacting a methanolic solution of di- and triorganotin(IV) compounds with an aqueous solution of t...
متن کاملcellular behavior and scanning electron microscope evaluation of pro-root mta, root mta and modified mta on fibroblast l929
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15 صفحه اولFerulic acid protects PC12 neurons against hypoxia by inhibiting the p-MAPKs and COX-2 pathways
Objective(s):Hypoxia induces cellular oxidative stress that is associated with neurodegenerative diseases. Here, the protective effects of ferulic acid (FA) on hypoxia-induced neurotoxicity in PC12 cells were evaluated. Materials and Methods:We investigated the effect of FA on PC12 cells subjected to hypoxia stress, in vitro. Results:FA increased cell viability, prevented membrane damage (LDH r...
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ژورنال
عنوان ژورنال: Brazilian Archives of Biology and Technology
سال: 2000
ISSN: 1516-8913
DOI: 10.1590/s1516-89132000000300006