scholarly journals Effect of Field Fungicide Applications on Storability, Physicochemical, and Nutraceutical Content of Muscadine Grape (Vitis rotundifolia Michx.) Genotypes

HortScience ◽  
2014 ◽  
Vol 49 (10) ◽  
pp. 1315-1323 ◽  
Author(s):  
Derek W. Barchenger ◽  
John R. Clark ◽  
Renee T. Threlfall ◽  
Luke R. Howard ◽  
Cindi R. Brownmiller
Keyword(s):  
Weight Loss ◽  
Total Phenolics ◽  
Soluble Solids ◽  
Limiting Factor ◽  
Fresh Market ◽  
Postharvest Storage ◽  
Fungicide Treatment ◽  
Vitis Rotundifolia ◽  
Table Grapes ◽  
Muscadine Grape

A major limiting factor in fresh-market muscadine grape (Vitis rotundifolia Michx.) commercialization is fruit deterioration during storage. Research on table grapes has shown that field fungicide applications increase storability, but little is known of their effect on muscadines. The effect of field applications of fungicides on physicochemical attributes during postharvest storage and nutraceutical content at date of harvest was evaluated on five muscadine cultivars (Nesbitt, Southern Jewel, Summit, Supreme, and Tara) and four breeding selections from the University of Arkansas Fruit Breeding Program in 2012 and 2013. There were two field treatments (no fungicide and fungicide). For the fungicide treatment, alternating applications of two fungicides were applied to the vine at 14-day intervals during berry maturation. Fruit was harvested and physicochemical attributes including berry volume, titratable acidity (TA), pH, soluble solids (%), color (L, chroma, and hue), firmness (force to penetrate berry skins and flesh), storage weight loss (%), and unmarketable fruit (%) were evaluated every 7 days for 3 weeks. Whole muscadine berries were analyzed for nutraceutical content only for the date of harvest. As a result of less decay, less weight loss, and greater firmness during storage, AM 27, ‘Southern Jewel’, and ‘Supreme’ had the highest potential for postharvest storage, whereas AM 01, AM 15, and ‘Tara’ had the least potential. Nutraceutical content varied by genotypes; overall AM 27 had the highest nutraceutical content [sum of anthocyanins, total phenolics, flavonols, resveratrol, and oxygen radical absorbane capacity (ORAC)], whereas ‘Supreme’ and AM 28 had the lowest. Total anthocyanins were only found in the black genotypes and total phenolics and resveratrol were unaffected by fungicide treatment. Total ellagitannins varied among the fungicide treatments. Total flavonols were generally greater in the no fungicide treatments, whereas ORAC was generally greater with fungicide treatments. Year of study and genotype were determined to be major contributors as sources of variation. Although field fungicide applications did not affect all postharvest attributes and nutraceutical components, differences among genotypes and fungicide treatments did occur.

scholarly journals Evaluation of Physicochemical and Storability Attributes of Muscadine Grapes (Vitis rotundifolia Michx.)

HortScience ◽  
2015 ◽  
Vol 50 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Derek W. Barchenger ◽  
John R. Clark ◽  
Renee T. Threlfall ◽  
Luke R. Howard ◽  
Cindi R. Brownmiller
Keyword(s):  
Weight Loss ◽  
Genetic Material ◽  
University Of Arkansas ◽  
Fresh Market ◽  
Postharvest Storage ◽  
Vitis Rotundifolia ◽  
Nutraceutical Compounds ◽  
Penetration Force ◽  
Berry Composition ◽  
Muscadine Grapes

Muscadine grapes (Vitis rotundifolia Michx.) are native to the southeastern United States and have potential for greater fresh-market sales if postharvest storage can be improved, but limited information is available on postharvest storability. In 2012 and 2013, physiochemical and storability attributes were measured in 17 muscadine genotypes (selections and cultivars) from the muscadine breeding program at the University of Arkansas or commercial cultivars. The postharvest and physiochemical attributes of the muscadines were measured at harvest and during storage for 3 weeks at 2 °C. Nutraceutical compounds were measured initially after harvest. As a result of extreme differences in weather in 2012 and 2013, the data were analyzed by year. Genotypes significantly affected storage attributes [weight loss (%), and unmarketable berries (%)] and physiochemical attributes such as penetration force (force to penetrate berry skin), titratable acidity (TA), pH, soluble solids (%), berry color (L*, chroma, and hue) as well as the nutraceutical compounds. The postharvest attributes of weight loss and unmarketable berries and the physiochemical attribute of penetration force were significantly affected by postharvest storage, but berry composition attributes remained fairly constant during storage. Overall, University of Arkansas selections AM 04, AM 26, AM 28, and the cultivar Southern Jewel had the highest potential for postharvest storage, whereas the genotypes AM 01, AM 15, AM 18, and ‘Nesbitt’ had the least potential. Genotypes AM 03, AM 04, AM 27, and ‘Ison’ had the highest nutraceutical contents [total anthocyanins, total phenolics, total flavonols, resveratrol, and oxygen radical absorbance capacity (ORAC)], whereas AM 18, AM 28, ‘Supreme’, and ‘Tara’ had the lowest contents. Postharvest storage potential, berry composition, berry color, and nutraceutical content were genotype-specific, but commercially viable genotypes were identified that can provide genetic material for breeding programs and postharvest evaluation protocol for commercial use.

scholarly journals Influence of Putrescine Application on Storability, Postharvest Quality and Antioxidant Activity of Two Iranian Apricot (Prunus armeniaca L.) Cultivars

2013 ◽  
Vol 5 (2) ◽  
pp. 212-219 ◽  
Author(s):  
Gholamhossein DAVARYNEJAD ◽  
Mehdi ZAREI ◽  
Elham ARDAKANI ◽  
Mohamad Ebrahim NASRABADI
Keyword(s):  
Antioxidant Activity ◽  
Weight Loss ◽  
Ascorbic Acid ◽  
Total Phenolics ◽  
Titratable Acidity ◽  
Maturity Index ◽  
Soluble Solids ◽  
Fruit Firmness ◽  
Postharvest Storage ◽  
Total Soluble Solids

The limited postharvest storage life of apricot is the focus of this study. Presenting a solution to improve the postharvest storage of studied apricot cultivars is the goal. Studding the effect of different concentration of postharvest putrescine on quality attributes and antioxidant activity of two apricot cultivars during storage is the approach taken. The two apricot cultivars (‘Lasgerdi’ and ‘Shahrodi’) were harvested at the commercial ripening stage, and fruits were immerged in 1, 2, 3 and 4 mM putrescine as well as distilled water (control) for 5 min, then fruits were packed in boxes with polyethylene cover and stored at 4°C and 95% relative humidity for 20 days. The changes in weight loss, fruit firmness, total soluble solids, titratable acidity, pH, maturity index, ascorbic acid, total phenolics and antioxidant activity were estimated after 0, 5, 10, 15 and 20 days during storage. The results showed that the weight loss, total soluble solids, pH and maturity index increased significantly while the fruit firmness, titratable acidity, ascorbic acid, total phenolics and antioxidant activity decreased significantly during storage for both cultivars. During storage, a significant difference between control and putrescine treatments in all measured parameters is observed. The putrescine treatments reduced significantly the weight loss and maintained their firmness. In this condition, the highest and lowest of titratable acidity, ascorbic acid, total phenolics and antioxidant activity were observed in treatments of 4 mM putrescine and control, respectively. The data revealed that the quality of apricot fruits was improved by the use of putrescine treatment due to its effect on delaying the ripening processes.

scholarly journals Products of Lactobacillus delbrueckii subsp. bulgaricus Strain F17 and Leuconostoc lactis Strain H52 Are Biopreservatives for Improving Postharvest Quality of ‘Red Globe’ Grapes

2020 ◽  
Vol 8 (5) ◽  
pp. 656 ◽  
Author(s):  
Xiang Fang ◽  
Qinchun Duan ◽  
Zhuo Wang ◽  
Fuyun Li ◽  
Jianxiong Du ◽  
...  
Keyword(s):  
Weight Loss ◽  
Decay Rate ◽  
Titratable Acidity ◽  
Inhibitory Effect ◽  
Lactobacillus Delbrueckii ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Table Grapes ◽  
Solids Content

‘Red Globe’ table grapes are large, edible, seeded fruit with firm flesh that tastes good, but can have poor postharvest shelf-life. This study was conducted to explore the effects of products of Lactobacillus delbrueckii subsp. bulgaricus strain F17 and Leuconostoc lactis strain H52 on ‘Red Globe’ table grapes for the enhancement of shelf-life and improvement of grape quality characteristics during postharvest storage. Strains F17 and H52 were isolated from traditional fermented yak milk obtained in the Qinghai–Tibetan Plateau. Samples from untreated and treated grapes were analyzed for physicochemical, biochemical, and microbiological properties (weight loss, decay rate, pH, total soluble solids content, titratable acidity, total phenols, sensory evaluation, and microbial growth) for 20 days. The results demonstrated that supernatants from both strains significantly reduced weight loss, decay rate, aerobic mesophilic bacteria, and coliform bacteria counts; delayed maturity and senescence of table grapes; and reduced titratable acidity and total phenols. However, the supernatant of strain F17 was more effective and resulted in better sensory evaluations and had a significant inhibitory effect on yeast and molds by day 5. Meanwhile, the supernatant from strain H52 had a significant inhibitory effect on fungi over the whole storage period. In addition, the results of the Pearson correlation analysis suggested that weight loss, decay rate, total soluble solids content, and microorganisms were highly correlated with the sensory evaluation data and quality of postharvest grapes when treated with the products of strain F17. On the basis of these data and sensory organoleptic qualities, the supernatant containing products from strain F17 had the best potential as a biopreservative to improve the postharvest quality of ‘Red Globe’ table grapes.

scholarly journals Relative humidity during cold storage on Postharvest quality of 'Niagara Rosada' table grapes

2015 ◽  
Vol 45 (3) ◽  
pp. 386-391 ◽  
Author(s):  
Josuel Alfredo Vilela Pinto ◽  
Márcio Renan Weber Schorr ◽  
Fabio Rodrigo Thewes ◽  
Deiverson Luiz Ceconi ◽  
Vanderlei Both ◽  
...  
Keyword(s):  
Weight Loss ◽  
Relative Humidity ◽  
Shelf Life ◽  
Cold Storage ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Table Grapes ◽  
Niagara Rosada

This study aimed to evaluate the effect of different levels of relative humidity (RH) on the maintenance of Postharvest quality of 'Niagara Rosada' table grapes after cold storage at 0.5°C for 21 days. A completely randomized design was used, with five replicates of 18 clusters per treatment. The selected levels of relative humidity were 85, 90, 95 and 100%, obtained by means of electronic humidity controllers. The fruits were evaluated in relation to rot incidence, berry cracking, browning rate, respiratory rate, titratable acidity, soluble solids, resistance to abscission, berry drop and weight loss. The evaluations were assessed at 20 days of storage and after two and four days of shelf-life (20°C; 85% RH). The results showed that as higher as relative humidity, higher is rot incidence and that the variables rachis browning and weight loss were inversely related to relative humidity. Resistance to abscission at the end of storage was higher when humidity ranged between 90 and 95%, but it was not affected after transfer to shelf-life from cold storage. Relative humidity ranging between 90 and 95% offer the best conditions to maintain the Postharvest quality of 'Niagara Rosada' table grapes

scholarly journals Vine Vigor and Fruit Characteristics of Muscadine Grapes

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 826C-826
Author(s):  
Zhongbo Ren* ◽  
Jiang Lu* ◽  
Xia Xu*
Keyword(s):  
Seed Size ◽  
Fruit Rot ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Fruit Characteristics ◽  
Table Grapes ◽  
Muscadine Grape ◽  
Solids Content ◽  
Grape Cultivars ◽  
Muscadine Grapes

Muscadine grape industry in the southeastern United Sates is expanding in recent years. To provide necessary information for the growing industry, 50 muscadine grape cultivars were evaluated for vigor and fruit characteristics at Florida A&M Univ., Tallahassee, Fla. Vine vigor was measured by winter pruning weight and varied from 5.4 lb/vine to 35.7 lb/vine. Among these cultivars, Triumph, Summit, and Tara were the least vigorous, while `Carlos', `Fry Seedless', and `Gold Isle' produced the most pruning weight. Dry scar ranged from 60.6% (Darlene) to 97.7% (Dixie Red). Among the most important table grapes, `Nesbitt', `Alachua', `Jumbo', `Fry', `Triumph', and `Scarlete' showed more than 70% of dry scars. Fruit rot ranged from 0.3% (Gold Isle) to 31.8% (Dixie Land). `Noble', `Scarlet', `Nesbitt', and `Carlos' were the important cultivars with less than 5% rotted fruits. Commercial fruit index were different significantly among the cultivars, ranged from 45.5% to 96.4%. Higher commercial fruit index of table grapes were found with `Magnolia', `Rosa', `Scarlet', and `Tara', while `Dixie Land' (45.5%) was the least. Seeds per fruit varied among the cultivars, ranging from 2.4 to 4.9. Fewer fruit seeds were found in `Fry' and `Nesbitt', while `Granny Val', `Senoria', `Darlene' and `Triumph' had more seeds per fruit than the others. Seed size also differed among the cultivars. `Sugar Pop' had the largest seeds (0.144 g/seed), which was twice as the size of the smallest seeds of `Welder' (0.056 g/seed). Fruit soluble solids content (SSC) ranged from 11.7% to 16.9% among the cvs. evaluated. Higher SSCs were found in `Welder', `Fry Seedless', `Scarlet', and `Cowart', while `Senoria' and `Jumbo' had relatively low SSC.

scholarly journals Hydrocooling as an Alternative to Forced-air Cooling for Maintaining Fresh-market Strawberry Quality

2006 ◽  
Vol 16 (4) ◽  
pp. 659-666 ◽  
Author(s):  
Marcos D. Ferreira ◽  
Jeffrey K. Brecht ◽  
Steven A. Sargent ◽  
Craig K. Chandler
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Air Cooling ◽  
Fresh Market ◽  
Pvc Film ◽  
Different Temperatures ◽  
Ripe Stage ◽  
Forced Air

Hydrocooling was evaluated as an alternative to forced-air cooling for strawberry (Fragaria × ananassa) fruit. `Sweet Charlie' strawberries were cooled by forced-air and hydrocooling to 4 °C and held in different storage regimes in three different trials. Quality attributes, including surface color, firmness, weight loss, soluble solids, and ascorbic acid content, pH and total titratable acidity, were evaluated at the full ripe stage. Fruit hydrocooled to 4 °C and stored at different temperatures for 8 or 15 days showed overall better quality than forced-air cooled fruit, with significant differences in epidermal color, weight loss, and incidence and severity of decay. Fruit stored wrapped in polyvinylchloride (PVC) film after forced-air cooling or hydrocooling retained better color, lost less weight, and retained greater firmness than fruit stored uncovered, but usually had increased decay. There is potential for using hydrocooling as a cooling method for strawberries.

scholarly journals (123) Performance of Muscadine Grape (Vitis rotundifolia Michx) Cultivars in Mississippi

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1069A-1069
Author(s):  
Stephen J. Stringer ◽  
Donna A. Marshall ◽  
James M. Spiers ◽  
Blair J. Sampson
Keyword(s):  
Skin Color ◽  
Southeastern United States ◽  
Skin Thickness ◽  
Fresh Market ◽  
Breeding Lines ◽  
Vitis Rotundifolia ◽  
Berry Size ◽  
Flower Type ◽  
Muscadine Grape ◽  
Grape Cultivars

Muscadines are grapes indigenous to the Southeastern United States, and they are highly prized for their unique fruity flavors. Factors including skin color, berry size, skin thickness, flower type, productivity, etc., vary among muscadine grape cultivars, making some cultivars more desirable for fresh market while others are better suited for processing and prodction of juice, jelly, and wine. A muscadine grape research vineyard was established in McNeil, Miss., in 1992 containing 37 named cultivars and numerous breeding lines. Performance of these cultivars was evaluated in 2001–2003 and results of these trials are presented.

scholarly journals 791 PB 033 INFLUENCE OF GIBBERELLIC ACID ON SIZING OF THOMPSON SEEDLESS TABLE GRAPES IN SOUTHWEST ARIZONA

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 546d-546 ◽  
Author(s):  
Marvin D. Butler ◽  
Robert E. Rush
Keyword(s):  
Gibberellic Acid ◽  
Soluble Solids ◽  
Fresh Market ◽  
Thompson Seedless ◽  
Table Grapes ◽  
Yield And Quality ◽  
Berry Weight ◽  
Berry Size ◽  
Desert Southwest ◽  
Data Yield

Early berry maturity with adequate size and sugar is a high priority for table grape producers in the desert southwest trying to capture the early fresh market, when prices are historically at their highest. Application of gibberellic acid is used, in combination with girdling to increase berry size. Research was conducted at Valley Grapes near Dateland, AZ on 1.5 hectare unreplicated plots in 1987 and 1988, and 0.2 hectare plots replicated four times in 1989 and 1990. The influence of 120g/h, 160gh and 200g/h of gibberellic acid, applied two to three times in various combinations, was evaluated on Thompson seedless grapes. Preharvest samples provided berry weight and soluble solids data. Yield and quality were determined from the number and grade of 10 kilogram boxes harvested for each pick. Berry weight tended to increase with increased rates of gibberellic acid while yield and quality were highest for more moderate rates. Three applications generally out-performed two applications with the same, or similar, total amount of gibberellic acid.

scholarly journals (381) Nutraceutical Profile of Selected Muscadine (Vitis rotundifolia Michx.) Cultivars and Breeding Lines

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1068E-1068 ◽  
Author(s):  
Stephen J. Stringer ◽  
Penelope Perkins-Veazie ◽  
Donna A. Marshall
Keyword(s):  
Phenolic Compounds ◽  
Ellagic Acid ◽  
Total Phenolics ◽  
Breeding Lines ◽  
Vitis Rotundifolia ◽  
Nutraceutical Compounds ◽  
Genetic Base ◽  
Small Fruit ◽  
Health Promoting ◽  
Muscadine Grape

The consumption of fresh fruit and vegetables has always been known to provide essential nutrition to mankind and, both anecdotally and clinically, has been linked to the prevention or alleviation of chronic diseases. The muscadine grape, a fruit native to the southeastern U.S., contains numerous phenolic compounds that act as antioxidants and also other compounds, such as resveratrol, that acts as a chemopreventative. The concentrations of these compounds present in the muscadine grape equal or exceed that known for any other small fruit. Fruit of selected muscadine grape genotypes, including breeding lines and cultivars, were evaluated over a 2-year period to assess the existing genetic base for these nutraceutical compounds. Results demonstrated that concentrations of total phenolics, ellagic acid, and resveratrol differ significantly among cultivars and breeding lines. These results suggest that it should be possible to breed for increased concentrations of the health-promoting compounds in muscadine grapes.

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