Today wine production in Azerbaijan totals to about two million decalitres a year. Yet, the yearly wine consumption is only one million decalitres resulting in a total surplus of about one million decalitres of wine. In consequence, export is gaining in importance resulting in an increase of importance to produce high quality wine. In this context the production of high quality grapes is very i...

The occurrence of aroma constituents in sparkling wines, with direct impact on their organoleptic characteristics, is affected by several factors, for example the base-wine particularities, grapes cultivar conditions, inoculated yeasts, aging stage, and wine-making practices. This study evaluated influence different four commercial yeasts (IOC FIZZ™, IOC DIVINE™, LEVULIA CRISTAL™, 18-2007™) vol...

The levels of free, perchloric acid-soluble conjugated and perchloric acid-insoluble bound polyamines were determined in pericarp and seeds of `Muscat Bailey A' grapes (Vitis labrusca L. Vitis vinifera L.) during development and ripening. In both, the pericarp and seeds, putrescine was the predominant polyamine in the three fractions, and the bound polyamine level was the highest of the fractio...

Effects of cluster exposure and winemaking treatments on freeand potential-volatile terpenes (FVT. P VT), total soluble solids (TSS), titratable acidity (TA), phenols pH, color and potassium were studied. Canopies of Golden Muscat grape vines were manipulated by shoot positioning and basal leaf removal at fruit set to create shaded and exposed cluster conditions. Winemaking treatments included:...

222 cultivated (Vitis vinifera) and 22 wild (V. vinifera ssp. sylvestris) grape accessions were analysed for genetic diversity and differentiation at eight microsatellite loci. A total of 94 alleles were detected, with extensive polymorphism among the accessions. Multivariate relationships among accessions revealed 16 genetic groups structured into three clusters, supporting the classical eco-g...

Abstract Currently, the prospects of effective control management in development gray ( Botrytis cinerea Pers.) and black rot Macrophoma flaccida (Viala et Rav.) Cav.), as well guaranteed preservation grape yield, can be achieved with ecological approach - use microbiological preparations or substances biological origin. The antagonistic activity fungicide Serenade ASO, SC (titer not less than ...

The skins and seeds of grapes are known to be rich sources of phenolic compounds, both flavonoids and non-flavonoids. The aim of the present study is to determine polyphenolic composition, antioxidant potential along with free radical scavenging activity and antimicrobial properties of ethanol extract of Grape skin and seed. Grape seed showed high antioxidant and antimicrobial activity compared...

Submitted by: Ramachandiran Nandhagopal, MBBS, DM. From the Neurology Unit, Department of Medicine, College of Medicine and Health Sciences, Al-Khod, Muscat, Oman (Formerly from the Department of Neurology, Sri Venkateswara Institute of Medical Sciences [SVIMS], Tirupathi, India). Address correspondence to: Dr. Ramachandiran Nandhagopal, Consultant Neurologist, Department of Medicine, Neurology...

BACKGROUND Monoterpenes are important contributors to grape and wine aroma. Moreover, certain monoterpenes have been shown to display health benefits with antimicrobial, anti-inflammatory, anticancer or hypotensive properties amongst others. The aim of this study was to construct self-aromatizing wine yeasts to overproduce de novo these plant metabolites in wines. RESULTS Expression of the Oc...

Considering how popular grapes are in terms of their antioxidant benefits, we compared concord, purple, red, and green grapes for total antioxidant capacity (TAC) and carbohydrate concentration. All grapes were acquired from commercial sources and samples of each were separated into skinned and not skinned groups. Each whole grape and the skins were individually homogenized and then separated i...