The effect of industrial processing was investigated on the stability of tomato carotenoids, phenolic compounds and ascorbic acid. A deep insight in the processed products allowed the quantification of caffeic acid hexosides, which are far more important contributors than the well-known chlorogenic acid, dicaffeoylquinic acids and quercetin oligosaccharides (new feruloyl, sinapoyl and syringoyl...

Kiwifruit requires a high quantity of nutrients that must be supplied through fertilization to obtain an optimum yield on a sustainable basis. This research was conducted to evaluate different fertilization methods including broadcast application (as control), deep placement of the fertilizer and fertigation, alone or in combination with foliar application and their effects on the yield, leaf m...

In the present work, the fresh juice of black mulberry (Morus nigra) was tested for antimicrobial activity against various pathogenic microorganisms. Total antioxidant contents, total phenolic contents, total anthocyanins, trace minerals, total acid contents, total solids and ascorbic acid content were also evaluated. The results showed good antimicrobial activity both for Grampositive and Gram...

Bovine adrenal medullary chromaffin cells cultured in serum-free medium were examined for changes in their catecholamine and opioid peptide stores following exposure to dexamethasone, ascorbic acid, or insulin for 2 to 12 days. Dexamethasone failed to alter cellular catecholamine levels, measured by high performance liquid chromatography with electrochemical detection, or cellular opioid peptid...

The paper covers the research of copper and zinc nanoparticle effect on the content of ascorbic acid, and quantitative and qualitative composition of amino acids and acylcarnitines in Pistia stratiotes L. plants. Plant exposition to copper nanoparticles led to the decrease in (1) the amount of ascorbic acid, (2) the total content of amino acids (by 25 %), and (3) the amount of all studied amino...

Dust accumulation capacity of Ficus carica L. and Psidium guajava L. was investigated from eight different sites of Multan, Pakistan.  Leaves of both plants were used for analyzing biometric (leaf area, fresh and dry weights) and biochemical attributes (chlorophyll contents, carotenoids and ascorbic acid).  Maximum dust accumulation was occurred in the plants growing near road...

Melissa officinalis is a plant of Lamiaceae family with medicinal properties which is important for its aromatic, synthetic, and secondary metabolites. The aim of this research was to study the effect of selenium on secondary metabolites and antioxidant properties of Melissa officinalis. For this purpose, an experiment was done in a completely randomized design with four repli...

A spectrophotometric method was developed for ascorbic acid present in various fruits, commercial fruit juices and sprouted food grains. The method involves the oxidation of ascorbic acid with excess manganese(III) following reduction of unreacted manganese(III) with diphenylamine or barium diphenylamine sulphonate forming a product λ(max) 570 nm the system 1 or 540 nm the system 2 and decrease...

background: oxidative stress in teratozoospermic semen samples caused poor assisted reproductive techniques (art) outcomes. among antioxidants, ascorbic acid is a naturally occurring free radical scavenger and as such its presence assists various other mechanisms in decreasing numerous disruptive free radical processes. objective: the main goal of this study was to evaluate potential protective...

Received June 24, 2008. Accepted January 28, 2009. Corresponding author: Azize Sener, Department of Biochemistry, Faculty of Pharmacy, Marmara University, Tibbiye Cad., No: 49, 34668, Haydarpasa-Istanbul, Turkey. Phone: +90 216 414 29 62; e-mail: [email protected] Abbreviations: apoB100 – apolipoprotein B100, apoER2 – apolipoprotein E receptor 2, FITC – fluorescein isothiocyanate, GpIIb/ I...