1
|
Hamie N, Nacouzi D, Choker M, Salameh M, Darwiche L, El Kayal W. Maturity Assessment of Different Table Grape Cultivars Grown at Six Different Altitudes in Lebanon. PLANTS (BASEL, SWITZERLAND) 2023; 12:3237. [PMID: 37765401 PMCID: PMC10536932 DOI: 10.3390/plants12183237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/07/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023]
Abstract
Table grapes are harvested based on well-known maturity indices that must be monitored after fruit veraison. The aim of this study was to assess these indices across multiple locations and environmental conditions, encompassing different table grape cultivars such as Black Pearl, Crimson Seedless, Superior Seedless, and Red Globe. For this reason, grape sampling was conducted across six distinct locations characterized by varying altitudes above sea level (m asl) and environmental conditions over the ripening season. The main maturity indices, including pH, sugar content, titratable acidity, berry firmness, and other parameters were monitored over the growing season. Moreover, the quantification of total polyphenols, total anthocyanins, and antioxidant activity was determined using spectrophotometric assays at harvesting. The study has examined the effect of the vineyard's location on grape quality and its interaction with the cultivar and environment. Crimson Seedless maintained a relatively high level of acidity with altitude near harvesting. Black Pearl exhibited a notable decline in both sugar content and berry firmness as elevation increased, whereas Red Globe demonstrated contrasting outcomes. The optimal maturity of Superior Seedless was observed at an elevation of 1000 m asl. Black Pearl and Crimson Seedless exhibited better adaptability to intermediate elevations (650 and 950 m asl), while Red Globe and Superior Seedless showed better adaptability to higher elevations (1000-1150 m asl). Among the studied cultivars, Black Pearl exhibited significantly higher levels of total polyphenols and anthocyanins, while close values were noticed between red and green cultivars.
Collapse
Affiliation(s)
- Najwane Hamie
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| | - Diana Nacouzi
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| | - Mariam Choker
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| | - Maya Salameh
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| | - Linda Darwiche
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| | - Walid El Kayal
- Faculty of Agricultural and Food Sciences (FAFS), American University of Beirut (AUB), P.O. Box 11-0236, Beirut 1107, Lebanon
| |
Collapse
|
2
|
Yehya M, Boulghobra D, Grillet PE, Fleitas-Paniagua PR, Bideaux P, Gayrard S, Sicard P, Thireau J, Reboul C, Cazorla O. Natural Extracts Mitigate the Deleterious Effects of Prolonged Intense Physical Exercise on the Cardiovascular and Muscular Systems. Antioxidants (Basel) 2023; 12:1474. [PMID: 37508012 PMCID: PMC10376415 DOI: 10.3390/antiox12071474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Muscle fatigue is a common symptom induced by exercise. A reversible loss of muscle force is observed with variable rates of recovery depending on the causes or underlying mechanisms. It can not only affect locomotion muscles, but can also affect the heart, in particular after intense prolonged exercise such as marathons and ultra-triathlons. The goal of our study was to explore the effect of four different natural extracts with recognized antioxidant properties on the contractile function of skeletal (locomotion) and cardiac muscles after a prolonged exhausting exercise. Male Wistar rats performed a bout of exhausting exercise on a treadmill for about 2.5 h and were compared to sedentary animals. Some rats received oral treatment of a natural extract (rosemary, buckwheat, Powergrape®, or rapeseed) or the placebo 24 h and 1 h before exercise. Experiments were performed 30 min after the race and after 7 days of recovery. All natural extracts had protective effects both in cardiac and skeletal muscles. The extent of protection was different depending on muscle type and the duration post-exercise (just after and after one-week recovery), including antiarrhythmic effect and anti-diastolic dysfunction for the heart, and faster recovery of contractility for the skeletal muscles. Moreover, the muscular protective effect varied between natural extracts. Our study shows that an acute antioxidant supplementation can protect against acute abnormal endogenous ROS toxicity, induced here by prolonged exhausting exercise.
Collapse
Affiliation(s)
- Marc Yehya
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
- UPR-4278, Laboratoire de Physiologie Expérimentale Cardiovasculaire, Avignon University, 84029 Avignon, France
| | - Doria Boulghobra
- UPR-4278, Laboratoire de Physiologie Expérimentale Cardiovasculaire, Avignon University, 84029 Avignon, France
| | - Pierre-Edouard Grillet
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
- Département de Biochimie et d'Hormonologie, CHU Montpellier, 34295 Montpellier, France
| | | | - Patrice Bideaux
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
| | - Sandrine Gayrard
- UPR-4278, Laboratoire de Physiologie Expérimentale Cardiovasculaire, Avignon University, 84029 Avignon, France
| | - Pierre Sicard
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
| | - Jérome Thireau
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
| | - Cyril Reboul
- UPR-4278, Laboratoire de Physiologie Expérimentale Cardiovasculaire, Avignon University, 84029 Avignon, France
| | - Olivier Cazorla
- PhyMedExp, INSERM, CNRS, CHU Montpellier, University of Montpellier, 34295 Montpellier, France
| |
Collapse
|
3
|
Guler A. Effects of different maceration techniques on the colour, polyphenols and antioxidant capacity of grape juice. Food Chem 2023; 404:134603. [PMID: 36444021 DOI: 10.1016/j.foodchem.2022.134603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
Abstract
This study investigated the effects of different maceration techniques on the colour parameters, phenolic content and antioxidant activity of grape juice. Maceration techniques influenced colour parameters, and a* and Hue ranged from -0.77 to 0.55 and 60.90 to 104.40, respectively. The microwave and microwave and sonication combination increased the total monomeric anthocyanin, phenolic and flavonoid contents. Malvidin 3-O-glucoside increased more than twofold, and delphinidin 3-O-glucoside and cyanidin 3-O-glucoside increased one fold according to the enzymatic method in the microwave treatments. The microwave technique was the most effective technique for antioxidant capacity, but sonication, cold and thermosonication results were lower than enzymatic treatment. The microwave and microwave and sonication enhanced the polyphenols with strong antioxidant power, such as catechin from 0.87 to 37.40 and trans-resveratrol from 0.09 to 0.23 mg/100 g, by comparison with the enzymatic technique. The findings suggested these two techniques were the most effective techniques for maceration.
Collapse
Affiliation(s)
- Ali Guler
- Viticulture Research Institute, Manisa, Türkiye.
| |
Collapse
|
4
|
de Sousa BRV, de Lima Tavares Toscano L, de Almeida Filho EJB, Sena KF, Costa MS, de Souza Cunha RC, de Souza Siqueira Quintans J, Heimfarth L, Marques ATB, da Silva DF, de Campos LFCC, Persuhn DC, Silva AS. Purple grape juice improves performance of recreational runners, but the effect is genotype dependent: a double blind, randomized, controlled trial. GENES & NUTRITION 2022; 17:9. [PMID: 35655124 PMCID: PMC9164373 DOI: 10.1186/s12263-022-00710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/02/2022] [Indexed: 12/04/2022]
Abstract
Background We examined the influence of superoxide dismutase 3 (SOD3) Arg213Gly and Peroxisome Proliferator-Activated α-Receptor (PPARα) 7G/C polymorphisms to a single dose of purple grape juice supplementation on time-to-exhaustion running test, redox balance and muscle damage in recreational runners. Methods Forty-seven male recreational runners performed a running test until exhaustion after supplementation with grape juice or a control drink. Serum total antioxidant capacity (TAC), malondialdehyde (MDA), plasma nitrite (NO), creatine kinase (CK) and lactate dehydrogenase (LDH) were measured pre and post exercise. Also, polymorphisms were analyzed in DNA extracted from the oral mucosa. Results Grape juice improved the time-to-exhaustion. When analyzed by genotype, the recreational runners with GG+CG genotypes of the SOD3 gene had greater time-to-exhaustion than the CC genotype, but was no different for the PAPRα gene. A slight difference was noted in TAC, since the CC genotype of the SOD3 gene showed higher TAC values in the post-exercise compared to the baseline and with pre-exercise, but these values did not increase compared to the CG+GG group, respectively. The SOD3 and PPARα genes were similar at all times for the other biochemical variables. Conclusion The ergogenic effect of grape juice was genotype-dependent for SOD3 Arg213Gly. However, biochemical redox balance markers did not explain this difference.
Collapse
|
5
|
Effectiveness of Grape Seed Extract in Patients with Nonalcoholic Fatty Liver: A Randomized Double-Blind Clinical Study. HEPATITIS MONTHLY 2022. [DOI: 10.5812/hepatmon-132309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Background: Nonalcoholic fatty liver disease (NAFLD) as a metabolic disorder has a high prevalence. Increasing serum concentrations of liver enzymes, lipid profiles, and fasting blood sugar (FBS) are the most laboratory findings in NAFLD. Efforts to identify effective treatments with fewer side effects to address these impairments are increasing. Grape seed extract (GSE) is rich in antioxidants (eg, proanthocyanidins (Pas), which it has beneficial effects reported previously). Objectives: We evaluated the effect of GSE on biochemical markers in NAFLD patients. Methods: The current randomized, double-blind clinical trial was investigated the GSE effect on patients with NAFLD. The patients were assigned into 2 groups (GSE and control groups). The duration of treatment was considered 2 months. The GSE group received GSE capsules (200 mg, two times a day for 2 months), and the control group received placebo (200 mg starch). The serum concentration of aspartate aminotransferase (AST), triglyceride (TG), FBS, high-density lipoprotein (HDL), alanine aminotransferase (ALT), low-density lipoprotein (LDL), and cholesterol were assessed at baseline, 1 month, and 2 months after treatment. Body mass index (BMI) and HDL/LDL ratio were assayed at different times. Results: The levels of AST, ALT, FBS, TG, HDL, LDL, and cholesterol significantly decreased, (P-value < 0.05), and the level of HDL significantly increased in patients who received GSE 200 mg twice a day for 2 months (P-value < 0.05) compared to control group, but BMI and weight did not change significantly (P-value > 0.05). Conclusions: Grape seed extract can be effective in fatty liver patients; such results may be contributed to the antioxidant properties of GSE due to the high amount of PAs and similar constituents in GSE. However, more investigations are needed to clarify the exact involved mechanism of GSE.
Collapse
|
6
|
Guler A, Yildiz Turgut D. Fatty acids, phenolic compounds and antioxidant capacity of the seeds from nine grape cultivars ( Vitis vinifera L.). CIÊNCIA E TÉCNICA VITIVINÍCOLA 2021. [DOI: 10.1051/ctv/ctv20213602116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Seeds are one of the main parts of the grapes, and they contain important constituents such as polyphenols, lipids, proteins and carbohydrates. In this study, oil contents, fatty acid composition, total phenolic content, total flavonoid content, monomeric flavan-3-ols and antioxidant capacities of nine grape seeds from nine cultivars were investigated. The correlations between the analyzed parameters were also examined. The oil contents of seeds ranged from 4.96 to 13.35%. Linoleic acid was the predominant fatty acid in the seeds, and it was followed by oleic acid, palmitic acid, stearic acid, linolenic acid, 11-eicosenoic acid and arachidic acid. Total phenolic and total flavonoid contents were 646.50-1120.78 mg GAE/g and 336.69-589.85 mg CE/g, respectively. ‘Italia’ seeds had the highest antioxidant capacity for DPPH and CUPRAC assays while ‘Cabernet Sauvignon’ seeds had the lowest one. The (-)-epigallocatechin, (+)-catechin, (-)-epigallocatechin gallate, (-)-epicatechin and (-)-epicatechin gallate contents in the seeds varied from 1.23 to 6.53 mg/g, 11.61 to 80.20 mg/g, 0.21 to 0.51 mg/g, 2.78 to 48.26 mg/g and 0.08 to 1.50 mg/g, respectively. The (+)-catechin and (-)-epicatechin were the major flavan-3-ol compounds in the grape seeds. Significant correlations were found between total phenolic content, total flavonoid, RSA (DPPH Radical scavenging activity), CUPRAC (Cupric reducing antioxidant capacity) and flavan-3-ols. Consequently, the current study findings support previous information that grape seeds are an important source of antioxidants as well as unsaturated fatty acids, which have positive effects on human health.
Collapse
|
7
|
Ali DA, Badr El-Din NK, Abou-El-magd RF. Antioxidant and hepatoprotective activities of grape seeds and skin against Ehrlich solid tumor induced oxidative stress in mice. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2015.02.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Doaa A. Ali
- Department of Zoology, Faculty of Science, University of Mansoura, Mansoura, Egypt
| | | | - Rania F. Abou-El-magd
- Department of Medical Biology, Faculty of Medicine, Gazan University, Gazan, Saudi Arabia
| |
Collapse
|
8
|
Rapid spectrophotometric methods as a tool to assess the total phenolics and antioxidant potential over grape ripening: a case study of Madeira grapes. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2018. [DOI: 10.1007/s11694-018-9790-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
9
|
Levin RM, Xia L, Wei W, Schuler C, Leggett RE, Lin ADY. Effects of Ganoderma Lucidum shell-broken spore on oxidative stress of the rabbit urinary bladder using an in vivo model of ischemia/reperfusion. Mol Cell Biochem 2017; 435:25-35. [PMID: 28484937 DOI: 10.1007/s11010-017-3053-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/01/2017] [Indexed: 12/12/2022]
Abstract
Oxidative stress plays an important role in specific disease pathophysiology and the aging process. In the history of human kind, many herbs were utilized for disease prevention and anti-aging treatment. However, there are few direct evidences provided by modern laboratory technology. The current study was designed to evaluate Ganoderma Lucidum's (GL) ability to reduce the damage from in vivo ischemia/reperfusion (I/R) using a rabbit model of I/R that has been effectively utilized to prove the effects of drugs and supplements to reduce oxidative stress. Urinary bladder dysfunction secondary to benign prostatic hyperplasia (BPH) is a major affliction of aging men. One of the major etiologies of obstructive bladder dysfunction (OBD) is oxidative stress induced by I/R. Pharmaceutical studies and clinical research have proven that GL is useful in helping to prevent certain types of pathology and also helpful in prolonging human life in part by acting as an antioxidant. Using an in vivo model of I/R, we have investigated the ability of GL to protect bladder function from oxidative damage mediated by I/R. Our studies demonstrated that ischemia followed by reperfusion resulted in a significant decrease in bladder compliance and decreases in the contractile responses to a variety of forms of contractile stimulation. Pretreatment of rabbits with Ganoderma Lucidum prior to subjecting the rabbits to I/R completely inhibited the negative effects of I/R on both the compliance and contractile responses. These results demonstrate that Ganoderma provides excellent protection of bladder function following I/R (oxidative stress).
Collapse
Affiliation(s)
- Robert M Levin
- Stratton VA Medical Center, Albany, NY, 12208, USA.
- Albany College of Pharmacy and Health Science, Albany, NY, USA.
| | - Li Xia
- Beijing Tong Ren Tang Chinese Medicine Co., LTD., Beijing, China
| | - Wu Wei
- Beijing Tong Ren Tang Chinese Medicine Co., LTD., Beijing, China
| | | | | | - Alpha D-Y Lin
- Beijing Tong Ren Tang Chinese Medicine Co., LTD., Beijing, China
- The Central-Clinic Hospital, Taipei, Taiwan
- Urology Department, National Yang-Ming University, Taipei, Taiwan
| |
Collapse
|