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...

Coenzyme Q is a lipid that participates to important physiological functions. Coenzyme Q is synthesized in multiple steps from the precursor 4-hydroxybenzoic acid. Mutations in enzymes that participate to coenzyme Q biosynthesis result in primary coenzyme Q deficiency, a type of mitochondrial disease. Coenzyme Q10 supplementation of patients is the classical treatment but it shows limited effic...

The use of taste sensors with lipid/polymer membranes is one the methods to evaluate taste. As previously reported, can detect non-charged substances such as caffeine by modifying hydroxybenzoic acids (HBAs). mechanism detection was identified be an allosteric one. Generally, mechanism, defined “regulation at distant sites”, used describe regulation process for proteins. In this study, improve ...

Spectrophotometric methods for the determination of total polyphenols and flavonoids are often used because they simple, sensitive, precise. Before using these methods, must be validated to ensure quality obtained data prove that method is suitable its purpose. The aim this study was validate spectrophotometric flavonoids. has been according polyphenol standards, which belong groups phenolic ac...

One of the environmental sustainability issues is salinity. Basil seedlings (Ocimum basilicum L.) were treated using NaCl solutions three different concentrations prepared irrigation (40, 80, and 130 mM), various biochemical analyses performed on basil leaves. The number leaves, leaf area, moisture, weights, MDA content decreased significantly as salinity levels increased from 40 to mM; however...

Anthocyanins from purple sweet potato (PSP) are peonidin and cyanidin glycosides acylated by p-hydroxycinnamic p-hydroxybenzoic acids. For six individual PSP pigments, the thermodynamic constants of proton transfer water addition were determined, which speciation diagrams for colored colorless forms UV–visible spectra could be constructed. The data confirm that acylation phenolic acids protects...