scholarly journals The effects of bud load and regulated deficit irrigation on sugar, organic acid, phenolic compounds and antioxidant activity of Razakı table grape berries

2015 ◽  
Vol 5 ◽  
pp. 01002
Author(s):  
Semih Tangolar ◽  
Güzin Tarım ◽  
Haşim Kelebek ◽  
Serpil Gök Tangolar ◽  
Sevilay Topçu
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Organic Acid ◽  
Deficit Irrigation ◽  
Table Grape ◽  
Regulated Deficit Irrigation ◽  
Grape Berries

scholarly journals Antioxidant, Antimutagenic and Cytoprotective Properties of Hydrosos Pistachio Nuts

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4362 ◽  
Author(s):  
Luis Noguera-Artiaga ◽  
Joel Said García-Romo ◽  
Ema C. Rosas-Burgos ◽  
Francisco Javier Cinco-Moroyoqui ◽  
Reyna Luz Vidal-Quintanar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Deficit Irrigation ◽  
Ames Test ◽  
Antioxidant Properties ◽  
Human Cell Lines ◽  
Regulated Deficit Irrigation ◽  
Antioxidant Power ◽  
Pistachio Nuts ◽  
Ferric Reducing Antioxidant Power ◽  
Cancerous Cells

Pistachio nuts are included among the foods with the highest antioxidant capacity. Stressed cultivating conditions, such as the use of regulated deficit irrigation (RDI), are expected to create a plant response that might increase the production of secondary metabolites. Fruits that are obtained under RDI treatments are commonly called hydroSOS products. The aim of this work was to study the influence of using different rootstocks (P. atlantica, P. integerrima, and P. terebinthus) and two RDI treatments on the antioxidant (ABTS, ferric reducing antioxidant power (FRAP), and DPPH), antimutagenic (Ames test), and cytotoxicity (MTT assay in five human cell lines) activities of pistachios. P. terebinthus showed the best antioxidant activity, and the RDI treatments maintained and improved the antioxidant properties of pistachios. Neither the rootstock nor the RDI had significant impact on the antimutagenic potential of pistachios. The nut extracts had no toxic effect on non-cancerous cells and the application of RDI did not reduce their cytoprotective capacity. Furthermore, neither rootstock nor RDI treatments affected the ability of the pistachio extracts of preventing the oxidative damage by H2O2. The application of RDI strategies, in addition to allowing irrigation water saving, led to obtaining pistachios with the same or even better biofunctional characteristics as compared to fully irrigated pistachios.

Post-veraison regulated deficit irrigation in ‘Crimson Seedless’ table grape saves water and improves berry skin color

2016 ◽  
Vol 165 ◽  
pp. 181-189 ◽  
Author(s):  
Virginia Pinillos ◽  
Fernando M. Chiamolera ◽  
Juan F. Ortiz ◽  
Juan J. Hueso ◽  
Julián Cuevas
Keyword(s):  
Skin Color ◽  
Deficit Irrigation ◽  
Table Grape ◽  
Berry Skin ◽  
Regulated Deficit Irrigation

VITAMIN C, ANTIOXIDANT ACTIVITY AND PHENOLIC COMPOUNDS OF FRESH-CUT POMEGRANATES CULTIVATED UNDER DEFICIT IRRIGATION STRATEGY

2013 ◽  
pp. 113-120 ◽  
Author(s):  
N. Falagán ◽  
F. Artés-Hernández ◽  
E. Aguayo ◽  
F. Artés ◽  
M.E. Peña-Estévez ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Vitamin C ◽  
Deficit Irrigation ◽  
Irrigation Strategy ◽  
Fresh Cut

scholarly journals Effects of Water Deficit Irrigation on Phenolic Composition and Antioxidant Activity of Monastrell Grapes under Semiarid Conditions

Antioxidants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1301
Author(s):  
Eva P. Pérez-Álvarez ◽  
Diego S. Intrigliolo ◽  
María Pilar Almajano ◽  
Pilar Rubio-Bretón ◽  
Teresa Garde-Cerdán
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Deficit Irrigation ◽  
Phenolic Content ◽  
Negative Impact ◽  
Antioxidant Potential ◽  
Total Phenolic ◽  
Vitis Vinifera L ◽  
Phenolic Composition

The high phenolic compound content of grapes makes them an important source of natural antioxidants, among other beneficial health properties. Vineyard irrigation might affect berry composition and quality. Regulated deficit irrigation (RDI) is a widely used strategy to reduce the possible negative impact of irrigation on grapes, improving grape composition and resulting in water savings. Monastrell grapevines (Vitis vinifera L.) grown in eastern Spain were subjected to two water regime strategies: rainfed (non-irrigation) and RDI. The content of anthocyanins, flavonols, flavanols, hydroxybenzoic and hydroxycinnamic acids, and stilbenes was determined by HPLC and was related with total phenolic content and three antioxidant activity methods (ABTS, DPPH, and ORAC). The study aimed to evaluate and compare the phenolic composition and antioxidant potential of Monastrell grapes. The rainfed regime concentrated grapes in terms of phenolic compounds. Thus, total content of anthocyanins, flavonols, flavanols, hydroxybenzoic acids, and total phenols were higher in the rainfed grapes than in the RDI ones. Besides, the rainfed grapes doubled their antioxidant potential with respect to the RDI grapes with the ORAC method. Total phenolic content and antioxidant activity by ORAC assay positively correlated with most of the total phenolic compounds analyzed. This study demonstrates how field practices can modulate final grape composition in relation to their antioxidant activity.

scholarly journals Potential Associations among Bioactive Molecules, Antioxidant Activity and Resveratrol Production in Vitis vinifera Fruits of North America

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 336
Author(s):  
Champa Wijekoon ◽  
Thomas Netticadan ◽  
Yaw L. Siow ◽  
Ali Sabra ◽  
Liping Yu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
North America ◽  
Vitis Vinifera ◽  
Unsaturated Fatty Acids ◽  
Stilbene Synthase ◽  
Table Grape ◽  
Bioactive Molecules ◽  
Food Ingredient ◽  
Grape Varieties

Grapes (Vitis vinifera L.) are rich in bioactive molecules contributing to health benefits. Consumption of grapes is linked to reduced incidence of cardiovascular diseases. Studies on table grape cultivars are limited although much attention in research was focused on the wine industry. Bioactive effects of grapes as anti-inflammatory, anticarcinogenic, cardioprotective, vasorelaxant, phytoestrogenic and neuroprotective have also been reported. For example, resveratrol is a natural food ingredient present in grapes, with high antioxidant potential. Here we conducted an exploratory study to investigate bioactive molecules, antioxidant activity and the association between constitutive stilbene synthase (STS) gene expression and the resveratrol biosynthesis in selected table grape varieties in North America. The phenolic compounds, fatty acid composition and antioxidant activity of four grape varieties were compared. Red Globe variety was rich in unsaturated fatty acids as well as phenolic compounds such as caffeic acid, quercetin and resveratrol. Meanwhile, the constitutive expression of grape stilbene synthase gene was higher in Flame and Autumn Royal where resveratrol content of these cultivars was relatively low compared to the Red Globe variety. This study shows the potential links in grape antioxidant activity and resveratrol production, but more studies are necessary to show the association.

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