Aroma potential of three autochthonous grapevine varieties from Tunisia

OENO One ◽  
2008 ◽  
Vol 42 (4) ◽  
pp. 231 ◽  
Author(s):  
Imène Souid ◽  
Zemni Hassene ◽  
Eva Sánchez Palomo ◽  
Maria Soledad Pérez-Coello ◽  
Abdelwahed Ghorbel
Keyword(s):  
Grape Juice ◽  
Free Fraction ◽  
Aroma Compounds ◽  
Vitis Vinifera L ◽  
Qualitative And Quantitative ◽  
Linalool Oxide ◽  
Grape Juices ◽  
Grape Varieties ◽  
First Time ◽  
C6 Compounds

<p style="text-align: justify;"><strong>Aims</strong>: The aim of the present work is to characterize the aromatic profiles of three Tunisian autochthonous grapevine (Vitis vinifera L.) varieties (Asli, Beldi and Ferrani).</p><p style="text-align: justify;"><strong>Methods and results</strong>: The GC-MS analysis of the autochthonous grapevine varieties studied allowed identifying 38 volatile compounds in the free fraction and 36 glycosidically bound aroma compounds. Volatile C6 compounds were typical for the studied varieties especially for Asli variety. The analysis of the liberated aglycones through enzymatic hydrolysis show that a-terpineol and cis linalool oxide pyran that did not appear as free aroma compounds were found with significantly highest concentration in Asli grape juice. Also, 3-oxo-a-ionol and 3-hydroxy-7,8-dihydro-b-ionol were found only under their glycosidically bound forms with significantly higher concentrations in Asli and Ferrani than in Beldi grape juices.</p><p style="text-align: justify;"><strong>Conclusion</strong>: The results obtained in the present work show qualitative and quantitative differences in the aroma profiles among the studied varieties. However, non-terpenyl compounds were the most abundant aroma substances in the three studied varieties.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: The present work characterize, for the first time, the aromatic profiles of three Tunisian autochthonous grapevine varieties (Asli, Beldi and Ferrani) and constitutes a major contribution to the aroma chemistry of these three grape varieties.</p>

Identification of Grape Varieties

1964 ◽  
Vol 47 (4) ◽  
pp. 671-676
Author(s):  
A C Rice
Keyword(s):  
Spectral Response ◽  
Spectral Characteristics ◽  
Grape Juice ◽  
Concord Grape ◽  
Grape Juices ◽  
Two Peaks ◽  
Relationship Of ◽  
Grape Varieties ◽  
The Relationship

Abstract A series of grape juices and concentrates were diluted with Macllvaine’s buffer at pH levels ranging from 2 to 8 and analyzed spectrophotometrically. The relationship of various Concord and California grape juice samples from different geographical areas were characterized individually and in combination. The spectral characteristics of Concord and Salvador grape juice were found to be similar except at pH 7, where the Concord curve has two peaks (583 and 450 mμ) and the Salvador curve has only one. The anthocyanin components in Concord grape juice were studied chromatographically for an explanation of its unique spectral response at pH 7. Results are incomplete, and further study is recommended.

scholarly journals Potential of landrace winery by-products (Vitis vinifera L.) as a source of phenolic compounds with antioxidant properties

OENO One ◽  
2015 ◽  
Vol 49 (4) ◽  
pp. 241
Author(s):  
Maria Carme Garau ◽  
María Reyes González-Centeno ◽  
Joana Maria Luna ◽  
Antoni Negre ◽  
Carmen Rosselló ◽  
...  
Keyword(s):  
Selection Process ◽  
Antioxidant Properties ◽  
Balearic Islands ◽  
Raw Material ◽  
Total Phenolic ◽  
Vitis Vinifera L ◽  
Wine Sector ◽  
Grape Varieties ◽  
First Time ◽  
By Products

<p style="text-align: justify;"><strong>Aim</strong>: To evaluate the potential of the main winery by-products – pressed pomaces, fermented pomaces and stems –, derived from minor grape varieties (<em>Escursac</em>, <em>Gorgollassa</em> and <em>Sabater</em> as red varieties, <em>Giró</em> <em>ros</em> and <em>Quigat</em> as white varieties) native to the Balearic Islands (Spain), as raw material for the production of phenolic concentrates with antioxidant properties.<strong></strong></p><p style="text-align: justify;"><strong>Methods and results</strong>: Total phenolics, tannins and anthocyanins, as well as antioxidant capacity of winery by-products were spectrophotometrically evaluated and compared to those of <em>Cabernet sauvignon</em> and <em>Chardonnay</em> varieties. In general, stems presented higher average total phenolic (5.57 ± 1.25 g/100 g dm) and total tannin (10.26 ± 2.10 g/100 g dm) contents than the corresponding pomaces, with the landrace variety <em>Escursac</em> being that which exhibited the highest values (<em>p</em> &lt; 0.05). For pomaces, those sampled after the fermentation process presented larger amounts of polyphenols than those collected just after the pressing process, and the fermented pomaces from the autochthonous varieties<em> Escursac</em> and <em>Sabater</em> were those with the highest potential.<strong></strong></p><p style="text-align: justify;"><strong>Conclusion</strong>: The present research demonstrated that landrace minor varieties denoted similar, or even higher, phenolic and antioxidant potential than the reference grape varieties. The characterization performed might be the basis for their integrated use and revalorization as promising sources of phenolic concentrates, despite not having still undergone the selection process that the traditional grape varieties have been subjected to as a result of decades of intensive production.<strong></strong></p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: To the best of our knowledge, this is the first time that the phenolic composition and antioxidant properties of winery by-products from grape varieties native to the Balearic Islands are examined. Due to the increasing use of these minor grape varieties in winemaking, the phenolic characterization of their by-products is of great interest for the wine sector, which could exploit these underutilized resources more efficiently and extensively so as to support sustainable agricultural production.</p>

scholarly journals Study of some natural characters for a group of European grape varieties Vitis vinifera L. planted in Tarhuna region

2019 ◽  
pp. 72-78
Author(s):  
Abderzak M. Balaban
Keyword(s):  
Correlation Analysis ◽  
Vitis Vinifera ◽  
Significant Variation ◽  
Positive Relationship ◽  
Grape Juice ◽  
The Other ◽  
Vitis Vinifera L ◽  
Local Variety ◽  
Grape Varieties ◽  
Number Of Seeds

This study was carried out on a group of eight European grape varieties Vitis vinifera L. planted under rain fed irrigation in Tarhuna region during 2017 season. The aim was to evaluate some natural characters of the fresh fruits. These varieties are: (Moscat Elscandaria, Crimson, Victoria, Zorazi, Yellow Farina, Boaboud or Black Aboud, Local Black and Local White). Results showed highly significant differences amongst the varieties in all the studied traits. Farina variety produced heavier clusters and higher number of seeds per fruit (550 gm and 2 seed/fruit) respectively. On the other hand, results indicated that Victoria variety produced relativity higher weight and size of fruits (283.8 gm and 270.3 ml/50 fruits) respectively. the trait of the percentage of total soluble sold was significantly higher in Black Local variety (22.6%). Correlation analysis showed a statistically positive relationship between the weight and size of the fruit (value), and between the number of seeds per fruit and the percentage of total soluble sold (value). In general, results of this study showed a statistically significant variation amongst the varieties in their natural traits. .and the majority of the varieties compensated the lack in one trait with the strength in other traits. In conclusion, results of this study indicated that Victoria variety is the best option when grape varieties are planted for fresh consumption purpose, besides, Local Black variety is preferred for grape juice production.

scholarly journals Effect of Different Processing Conditions on Bioactive Compounds of Selected Grape Varieties

2021 ◽  
pp. 159-168
Author(s):  
M .M. W. Aponso ◽  
R. A. U. J. Marapana ◽  
A. T. Abeysundara ◽  
G. O. De Silva ◽  
R. Manawaduge
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Grape Juice ◽  
Enzyme Treatment ◽  
Processing Conditions ◽  
Ic50 Value ◽  
Pectinase Enzyme ◽  
Grape Juices ◽  
Grape Varieties ◽  
Locally Grown

Bioactive compounds in grapes vary in terms of cultivar and processing conditions. Raw juice and treated grape juices from locally grown Israel blue and locally available, imported, Red Globe and Michele Palieri varieties in Sri Lanka were used for the analysis. Grape juices were subjected to different processing conditions such as pasteurization and pectinase enzyme treatment. Total Monomeric Anthocyanin content (TAC), Total Phenolic Content (TPC), and antioxidant activity were analyzed. Compared to the imported grape varieties, the locally grown, pectinase enzyme-treated Israel blue grape juice with 2% pectinase enzyme concentration, 40 0C incubation temperature, and 2 hours incubation time, under dark condition had the significantly highest values (p < 0.05) for TAC at 177.03±4.15 mg/L of malvidin-3-O-glucoside (M3G), TPC at 527.07 ± 3.55 mg/L of Gallic acid equivalents and antioxidant activity in terms of DPPH radical scavenging assay with IC50 value at 7.05±0.35 mg/mL Gallic acid equivalents and ABTS radical scavenging assay with IC50 value at 0.31±0.01 mg/mL of Trolox equivalents. TAC, TPC, and antioxidant activity of three grape varieties showed the highest values in pectinase enzyme-treated grape juice which was followed by raw juice and the pasteurized juice respectively. This research has taken an approach to enhance the bioactivity of grape juices via pectinase enzyme treatment and evaluate the suitability of locally grown Israel blue grape variety in Sri Lanka to form as a functional beverage to meet nutritional and health requirements.

scholarly journals Physico-chemical aspects of grape juices produced in the region of Campanha Gaucha, RS, Brazil (Southern Brazil)

2019 ◽  
Vol 12 ◽  
pp. 01018
Author(s):  
V.B. Costa ◽  
S.B. de Andrade ◽  
P.L.P.K. Lemos ◽  
A. Bender ◽  
C. Goulart ◽  
...  
Keyword(s):  
Grape Juice ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Southern Brazil ◽  
Color Intensity ◽  
Volatile Acidity ◽  
Physico Chemical ◽  
Increasing Demand ◽  
Solids Content ◽  
Grape Juices

The Campanha Gaucha region, southern Brazil, has received significant investments in Viticulture during the last decades, especially for the production of quality wines. However, implementing the production of American and hybrid grapes in this region constitutes and opportunity to supply the increasing demand of the grape juice market in Brazil. Juices of two varieties, “Bordô” and “Concord”, from two locations, Dom Pedrito and Santana do Livramento, were analysed in terms of the following physico-chemical aspects: total city, volatile acidity, density, pH, soluble solids content, color intensity, and hue. “Bordô” juices presented higher total acidity and did not differ in relation to location. Higher volatile acidity was found in “Concord” juice from Santana do Livramento. Higher pH was found in the variety “Concord” and in the location Dom Pedrito. For this same location, the “Concord” grape juices showed higher soluble solids values. Color intensity was higher in Santana do Livramento. Color hue was higher in Dom Pedrito. Both variety and location impacted significantly on physico-chemical aspects of grape juices, although all the grapes were produced within the Campanha Gaucha region.

scholarly journals Determination of Flavonoids Compounds of Three Species and Different Harvesting Periods in Crataegi folium Based on LC-MS/MS

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1602
Author(s):  
Ya-Ping Guo ◽  
Hong Yang ◽  
Ya-Li Wang ◽  
Xiao-Xiang Chen ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Qualitative Analysis ◽  
Quantitative Method ◽  
Total Content ◽  
Qualitative And Quantitative Analysis ◽  
Pharmacological Activities ◽  
Time Saving ◽  
Qualitative And Quantitative ◽  
First Time

Crataegi folium have been used as medicinal and food materials worldwide due to its pharmacological activities. Although the leaves of Crataegus songorica (CS), Crataegus altaica (CA) and Crataegus kansuensis (CK) have rich resources in Xinjiang, China, they can not provide insights into edible and medicinal aspects. Few reports are available on the qualitative and quantitative analysis of flavonoids compounds of their leaves. Therefore, it is necessary to develop efficient methods to determine qualitative and quantitative flavonoids compounds in leaves of CS, CA and CK. In the study, 28 unique compounds were identified in CS versus CK by qualitative analysis. The validated quantitative method was employed to determine the content of eight flavonoids of the leaves of CS, CA and CK within 6 min. The total content of eight flavonoids was 7.8–15.1 mg/g, 0.1–9.1 mg/g and 4.8–10.7 mg/g in the leaves of CS, CA and CK respectively. Besides, the best harvesting periods of the three species were from 17th to 26th September for CS, from 30th September to 15th October for CA and CK. The validated and time-saving method was successfully implemented for the analysis of the content of eight flavonoids compounds in CS, CA and CK for the first time.

scholarly journals Seed morphology uncovers 1500 years of vine agrobiodiversity before the advent of the Champagne wine

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vincent Bonhomme ◽  
Jean-Frédéric Terral ◽  
Véronique Zech-Matterne ◽  
Sarah Ivorra ◽  
Thierry Lacombe ◽  
...  
Keyword(s):  
Middle Ages ◽  
Climatic Changes ◽  
Seed Morphology ◽  
Crucial Aspect ◽  
Wild Type ◽  
Grape Seeds ◽  
The Social ◽  
Reference Collection ◽  
Grape Varieties ◽  
First Time

AbstractA crucial aspect of viticulture is finally unveiled as the historical dynamics of its agrobiodiversity are described in the Champagne region for the first time. Outline analyses were carried out to compare the morphology of archaeological grape seeds from Troyes and Reims (first c. AD to fifteenth c. AD) with that of a reference collection of modern seeds, including wild vines and traditional grape varieties, believed to be ancient and characteristic of the French vine heritage. This allows us to document the chronological dynamics of the use of the wild Vitis type and of the diversity of the varieties used, based on morphological disparity. After showing the existence of morphological types corresponding to geographical groups, we highlight a geochronological dynamic. Our results show that the wild type is used throughout the series, up to the Middle Ages. In addition, domestic forms, morphologically related to southern varietal groups, are very early involved in the Champagne grape agrodiversity. The groups corresponding to the typical grape varieties of today do not appear until the second millennium. These previously unsuspected dynamics are discussed in light of the social, societal and climatic changes documented for the period.

scholarly journals PHYTOCHEMICAL CONSTITUENTS OF THE ROOT OF BERBERIS MICROPHYLLA

2017 ◽  
Vol 10 (6) ◽  
pp. 225 ◽  
Author(s):  
María Cristina Furrianca ◽  
Marysol Alvear ◽  
Tomás Zambrano ◽  
Víctor Fajardo ◽  
Luis Salazar
Keyword(s):  
Secondary Metabolites ◽  
Cardiac Glycosides ◽  
Methanolic Extract ◽  
Ethanolic Extract ◽  
Phytochemical Screening ◽  
Qualitative And Quantitative ◽  
Medicinal Properties ◽  
Phytochemical Constituents ◽  
First Time

Objective: To objective of this work was to perform phytochemical qualitative and quantitative analyzes of the main secondary metabolites in the root of Berberis microphylla.Methods: The extracts of B. microphylla root were tested through phytochemical screening and the quantification of the most important constituents was carried out using spectrophotometric and gravimetric techniques.Results: Phytochemical screening of both extracts showed the presence of alkaloids, flavonoids, glycosides, cardiac glycosides, saponins, terpenes,and tannins, which are pharmacologically important. Quantification of the major phytochemicals groups showed that the ethanolic extract contains 3.9% alkaloids, 0.46% flavonoids, 9.53% tannins, and 3.60% saponins. Similarly, the methanolic extract contains 6.61% alkaloids, 0.41% flavonoids, 7.40% tannins, and 1.43% saponins.Conclusion: This is the first time that the presence of tannins, flavonoids, and saponins in this plant has been reported. The medicinal properties of the root of B. microphylla may exist due to the presence secondary metabolites.

scholarly journals THE FIRST DATA ON THE MEIOBENTHOS OF LAKE NERO

2020 ◽  
pp. 61-72
Author(s):  
V. Gusakov
Keyword(s):  
Species Richness ◽  
Aquatic Organisms ◽  
Quantitative Structure ◽  
Community Members ◽  
Volga River ◽  
Volga River Basin ◽  
Qualitative And Quantitative ◽  
First Results ◽  
High Species Richness ◽  
First Time

The paper provides the first results of a study of the qualitative and quantitative structure of the community of bottom meiofauna (meiobenthos) in shallow, hypereutrophic Lake Nero (Volga River basin, Yaroslavl region, Russia). In the samples, collected in early September 2017, 106 representatives from 16 systematic groups of aquatic organisms were found. About half of them had not been previously recorded in the lake's fauna. The species composition of Gastrotricha, Nematoda, Tardigrada, Acari, Harpacticoida, and Ostracoda was analyzed in the water body for the first time. It is established that at the end of the vegetation season, the lake's meiobenthos characterizes by relatively high species richness, diversity, and quantitative parameters. The circle of the main (dominant) community members in the studied period was outlined.

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