IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Beneficial effects of moderate consumption of Teran red wine on blood lipid profile: a preliminary study on healthy volunteers

Beneficial effects of moderate consumption of Teran red wine on blood lipid profile: a preliminary study on healthy volunteers

Abstract

Moderate wine consumption may impact several human health aspects, among others as a result of phenolic compounds present in wine and their bioactive properties. The aim of this study was to determine whether six weeks of daily, moderate Teran red wine consumption affects the levels of total cholesterol, high-density lipoprotein cholesterol – HDL, low-density lipoprotein cholesterol – LDL, and triglycerides. Sixty-eight healthy adults (46 women and 22 men) aged 25-64 years voluntarily agreed to participate in the study. The study was carried out in accordance with the Declaration of Helsinki developed by the World Medical Association and was approved by the Ethics Committee of the Clinical Hospital Center Rijeka (Croatia). Informed consent was obtained from all subjects involved in the study. Participants were divided into two groups, consumers (49 participants) and non-consumers (19 participants). Non-consumers were asked to avoid any alcohol intake during the six study weeks, while consumers were asked to consume one glass of red wine (200 mL) per day and not to drink any extra alcohol. Blood samples for laboratory tests were drawn just before the start and at the end of the study period. Total cholesterol, HDL, LDL, and triglycerides were analyzed on a biochemistry analyzer at Clinical Hospital Centre Rijeka, using standard laboratory methods. Total phenols in wine expressed as gallic acid equivalents in mg/L of wine (mg GAE/L) were determined by the Folin-Ciocalteu colorimetric method using a UV/Vis spectrophotometer. One-way analysis of variance and Fischer’s least significant difference test at the level of significance p ≤ 0.05 were used to compare the groups of participants. The differences between the values obtained in the second (the end of the study period) and the first measurement (before the start of the study period) of their blood parameters were used in statistical analysis. The consumed red wine was produced at the Institute of Agriculture and Tourism (Poreč, Croatia) from an old autochthonous grapevine variety Teran (Vitis vinifera L.). The total phenolic content in the produced wines ranged from 2369 mg to 2917 mg GAE/L. No significant differences were observed between the consumers and non-consumers regarding blood lipid profiles. However, considering that alcohol consumption generally can negatively affect cholesterol levels, our findings suggest that the beneficial effects of phenolics and/or other wine constituents possibly overcame the negative alcohol effects on health. Although it does not provide any evidence of the significant positive or negative effect of moderate Teran red wine consumption on blood lipid profile, this study could suggest that daily moderate wine consumption can be considered as a component of the healthy lifestyle regarding the investigated parameters. This study was funded by Croatian Science Foundation under the projects VINUM SANUM (IP-2018-01-5049) and (DOK-2018-09).

DOI:

Publication date: June 24, 2022

Issue: IVAS 2022

Type: Poster

Authors

Rossi Sara1, Dvornik Štefica2, Bestulic Ena1, Ilak Persuric Anita Silvana1, Plavsa Tomsilav1, Lukic Igor1, Horvat Ivana1, Jagatic Korenika Ana-Marija3 and Radeka Sanja1

1Institute of Agriculture and Tourism
2Clinical Hospital Centre Rijeka; Faculty of Medicine, Rijeka 
3University of Zagreb, Faculty of Agriculture

Contact the author

Keywords

Teran red wine, moderate wine consumption, human health, cholesterol, total phenols

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

The impacts of frozen material-other-than-grapes (MOG) on aroma compounds of red wine varieties

An undesirable note called “floral taint” has been observed in red wines by winemakers in the Niagara region caused by large volumes of frozen leaves and petioles [materials-other-than-grapes (MOG)] introduced during mechanical harvest and subsequent winemaking late in the season. The volatiles, which we hypothesized are responsible, are primarily terpenes, norisoprenoids, and specific esters in frozen leaves and petioles. The purpose of this study was to investigate the volatile compounds which may cause the floral taint problem and explore how much of them (thresholds) may lead to the problem. Also, the glycosidic precursors of some of these compounds were analyzed to see the changes happening during frost events.

Aromatic profile of six different clones of Chardonnay grape berries in Minas Gerais (Brazil)

Aromas are one of the key points in food analysis since they are related to character, quality and consequently consumer acceptance. It is not different in the winery industry, where the aromatic profile is a combination of viticultural and oenological practices. Based on the development of more aromatic clones and on the potential to produce sparkling wines at Caldas, in the southern region of Minas Gerais (Brazil) (21°55´S and 46°23´W, altitude 1,100m), the aim of this work was the determination of volatile compounds in six different clones of Chardonnay grape berries to better understand which compounds add bouquet to the wine, and additionally comprehend the impacts of the edaphoclimatic and annual conditions on the improvement of grape-growing and winemaking practices.

Improving stilbenes in vitis Labrusca L. Grapes through methyl jasmonate applications

Grapes (Vitis sp.) are considered a major source of phenolic compounds such as flavonols, anthocyanins and stilbenes. Studies related to the beneficial effects of these compounds on health have encouraged research aimed at increasing their concentration in fruits. On this behalf, several plant growth regulators such as jasmonic acid and its volatile ester, methyl-jasmonate (MeJa), have demonstrated promising results in many fruits. However, Brazilian subtropical climate might interfere on treatment response. The present study aims to evaluate the application of MeJa in the pre-harvest period in Concord and Isabel Precoce grapes (Vitis labrusca L.).

Service crop effects on grapevine water and nitrogen status and yield under Mediterranean climate

Service crops in vineyard can provide multiple ecosystem services but they can also lead to competition with the grapevine for soil resources in the Mediterranean region due to potential severe droughts (Garcia et al., 2018). One of the levers of action to manage this competition is the choice of species adapted in terms of growth dynamics and water and nutrients’ needs. The objectives of this study were to determine the effect of temporary service crops on grapevine water and nitrogen status and grapevine yield and yield components in a Mediterranean vineyard.

Impact of deficit irrigation strategies on terpene concentration in Gewürztraminer grapes

Deficit irrigation is a viticultural practice often applied to improve the phenolic composition of red grapes and wines. However, the impact of this practice on grape terpenes – key aromatics for several grapes and wines – remains largely unknown. This study investigated the impact of deficit irrigation strategies on free and glycosylated terpenes in Gewürztraminer grapes. In a field study conducted in Oliver, BC, in 2016, 2017, and 2018, deficit irrigation regimes were applied to Gewürztraminer vines at different developmental stages (pre-veraison = Early Deficit, ED; post-veraison = Late Deficit, LD; throughout the season = Prolonged Deficit, PD). A well-irrigated control (CN) treatment was also established.