scholarly journals POSTHARVEST QUALITY OF WATERMELON CULTIVARS

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 276G-276
Author(s):  
P.M. Perkins-Veazie ◽  
J.K. Collins ◽  
N. Maness ◽  
B. Cartwright
Keyword(s):  
Ascorbic Acid ◽  
The Other ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Sugar Composition ◽  
Glucose Levels ◽  
Solids Concentration ◽  
Sensory Qualities ◽  
Lycopene Content

A study was conducted to characterize the quality of seedless and seeded watermelon. The seeded cultivars 'Jubilee', 'Black Diamond' and 'Allsweet' were compared with seedless 'King of Hearts' for firmness, lycopene content, rind thickness, soluble solids concentration (SSC), ascorbic acid, sugar composition, sweetness index and sensory qualities. 'King of Hearts' melons had higher firmness and lycopene values but a lower sweetness index compared with the other cultivars. 'Black Diamond' and 'Jubilee' cultivars had greater rind thickness compared to the other cultivars. 'Allsweet' and 'Jubilee' fruit had the highest ascorbic acid concentration. 'Black Diamond' had greater fructose and glucose levels than 'Jubilee' or 'King of Hearts' but was lowest in SSC. Untrained taste panelists preferred 'Jubilee' and 'Allsweet' melons. In this study, SSC, sugar composition, sweetness index or firmness were not good indicators of watermelon preference.

scholarly journals Potential of Postharvest Coatings to Maintain Freshness of Red-Fleshed Pitaya (Hylocereus costaricensis)

Agriculture ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 892
Author(s):  
Nur Azlin Razali ◽  
Steven A. Sargent ◽  
Charles A. Sims ◽  
Jeffrey K. Brecht ◽  
Adrian D. Berry ◽  
...  
Keyword(s):  
Weight Loss ◽  
Tap Water ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
The Other ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Quality Factors ◽  
Climacteric Fruit

Pitaya is a non-climacteric fruit that has white or red flesh with numerous small, black seeds. It has a high moisture content; however, water loss during handling and storage negatively affects the fresh weight, firmness and appearance of the fruit, decreasing market value. Application of compatible postharvest coatings has been shown to benefit postharvest quality of many crops. The objective of this study was to evaluate the effect of two commercial coatings on weight loss and quality of pitaya during storage. Pitaya fruit were commercially harvested and sorted for uniformity of size and freedom from defects. Fruit were briefly immersed in either a vegetable oil-based coating (VOC; Sta-Fresh® 2981) or a carnauba-based coating (CC; Endura-Fresh™ 6100) according to manufacturer’s recommendations. Fruit immersed in tap water served as a control. Fruit were fan-dried at room temperature for 20 min, then stored at 7 °C with 85% relative humidity (RH) and evaluated for selected physical quality parameters each 5 days during 20 days. After each evaluation, fruit were peeled and frozen for later analysis of soluble solids content (SSC), total titratable acidity (TTA); on day 15 fresh samples were evaluated by an untrained consumer sensory panel. CC prevented exocarp shriveling for 15 days of storage, compared to uncoated pitaya (16.3% area affected); shriveling in VOC was intermediate and not significantly different from the other treatments. Mesocarp firmness remained constant throughout 15 days of storage regardless of treatment. Fruit exocarp h* angle increased slightly by day 20, becoming slightly less red, and there were no negative treatment effects for the other quality factors measured: SSC (11.33%), TTA (0.25%), weight loss (5.5%) or sensory evaluations (appearance, flavor, texture, firmness, and juiciness). After 20 days storage, appearance for fruit from all treatments was rated unacceptable due to development of anthracnose lesions. It was concluded that both CC and VOC maintained quality of pitaya for 15 days at 7 °C and 85% RH by delaying exocarp shriveling.

scholarly journals Evaluation of postharvest quality of edible coated mandarin at ambient storage

2018 ◽  
Vol 8 (1) ◽  
pp. 18-25 ◽  
Author(s):  
TAA Nasrin ◽  
MN Islam ◽  
MA Rahman ◽  
MS Arfin ◽  
MA Ullah
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Respiration Rate ◽  
Liquid Paraffin ◽  
Coconut Oil ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Ambient Storage ◽  
Fruit Surface

An experiment was conducted to assess the influence of edible coatings on postharvest quality of mandarin during 20 days of ambient storage. Sorted fruits were washed; fruit surface water was removed and then coated with 100% liquid paraffin wax, 0.5% chitosan, 1.0% chitosan, 1.5% chitosan, and 100% coconut oil. After coating, fruit surface was air dried and kept at ambient condition (25±3 °C, 60–70% RH) and analyzed periodically for weight loss, respiration rate, firmness, decay incidence, TSS, pH, ascorbic acid content, and sensory properties. The results revealed that coconut oil had immense effect on the reduction of the weight loss and respiration rate and preserved firmness, total soluble solids, ascorbic acid, total sugar and reducing sugar and no incidence of moulds & their growth was found up to 16 days of storage.Int. J. Agril. Res. Innov. & Tech. 8 (1): 18-25, June, 2018

Effect of Polyolefin Film on the Quality of Kiwifruit with 1-MCP Treatment in Modified Atmosphere Packages

2011 ◽  
Vol 236-238 ◽  
pp. 2769-2772 ◽  
Author(s):  
Xi Hong Li ◽  
Cheng Jun Wang ◽  
Ai Li Wang ◽  
Yao Xiao ◽  
Yao Tang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Modified Atmosphere ◽  
Flesh Firmness ◽  
Solids Concentration ◽  
And Control ◽  
Soluble Solids Concentration

Kiwifruit is very perishable especially at 20 °C. The quality of kiwifruit with 1-MCP treatment stored at 20 °C in modified packages was investigated. Three different polyolefin films, including 0.03mm thickness polyethylene (PE), 0.03mm and 0.05mm thickness poly (vinyl chloride) (PVC) films, were used as packaging films. Kiwifruit were fumigated with 1-MCP to delay ripeness and then packaged with the three films and control (air). O2 and CO2 concentrations in the packages, flesh firmness, soluble solids concentration (SSC), titratable acidity (TA) and ascorbic acid were measured. MAP treatments could postpone the increase of TTS, inhibit the reduction of TA, and avoid the decrease of flesh firmness. Kiwifruit packaged in 0.05mm PVC obtained 33% TA more than control fruit and approximate 25 % retention of initial firmness. However, MAP didn’t maintain more ascorbic acid content of kiwifruit. In conclusion, MAP using polyolefin films combination 1-MCP treatment, especially 0.05mm PVC, might be more effective for preserving the quality of kiwifruit.

scholarly journals Postharvest Storage Quality of Gamma-irradiated `Climax' Rabbiteye Blueberries

HortScience ◽  
1994 ◽  
Vol 29 (2) ◽  
pp. 98-101 ◽  
Author(s):  
W.R. Miller ◽  
E.J. Mitcham ◽  
R.E. McDonald ◽  
J.R. King
Keyword(s):  
Cell Wall ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Neutral Sugar ◽  
Fresh Market ◽  
Vaccinium Ashei ◽  
Solids Concentration ◽  
Gamma Irradiated ◽  
Subsequent Storage

Postharvest quality of `Climax' rabbiteye blueberries (Vaccinium ashei Read) was evaluated after exposure to dosages of 0, 0.75, 1.5, 2.25, or 3.0 kGy gamma irradiation (0.118 kGy·min-1) and after subsequent storage. Irradiation did not affect weight loss, but irradiated berries were softer than nontreated berries. There was also a trend toward increased decay as dose increased. Irradiation had no effect on powdery bloom or surface color; total soluble solids concentration, acidity, and pH were affected slightly. Flavor preference was highest for nonirradiated berries and generally declined as dosage increased. Irradiation at 2.25 and 3.0 kGy resulted in increased levels of xylosyl residues in cell walls, and xylosyl residues were the most abundant cell-wall neutral sugar detected in blueberries. There was no evidence of cell wall pectin loss in irradiated berries. Irradiation at 21.5 kGy lowered the quality of fresh-market `Climax' blueberries.

scholarly journals Postharvest Quality of Yellow Pear Tomato Cultivated in Aquaponic System

2019 ◽  
Vol 11 (15) ◽  
pp. 227
Author(s):  
João Pedro R. da Silva ◽  
Vanderleia Schoeninger ◽  
Fabrício C. de Oliveira ◽  
Rodrigo A. Jordan ◽  
Valdiney C. Siqueira ◽  
...  
Keyword(s):  
Fruits And Vegetables ◽  
Cropping Systems ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Maturity Stage ◽  
Fruit Maturity ◽  
Two Factors ◽  
Lycopene Content

The production of vegetables in aquaponic systems has high sustainability and conservation of natural resources, but studies that make their cultivation feasible under Brazilian conditions are still incipient. Given the influence that the cultivation system can cause on the postharvest characteristics of fruits and vegetables, this study aimed to evaluate the postharvest quality of yellow pear tomato cultivated in an aquaponic system. Tomato plants were grown in a protected environment, in the experimental area of aquaponics of the Faculty of Agrarian Sciences, belonging to the Federal University of Grande Dourados. The experimental design was completely randomized in a factorial scheme, with two factors: maturity stage at harvest and storage time. Three stages of fruit maturity (green, intermediate and ripe) and two storage times (zero and 35 days) were analyzed. Tomato samples were subjected to the analyses using the whole fruit, evaluated for mass loss, color and firmness, and the fruit pulp, evaluated for soluble solids (SS), titratable acidity (TA), SS/TA ratio, pH and lycopene content. The fruits of yellow pear tomato cultivated in aquaponic system were in satisfactory conditions with respect to the postharvest parameters evaluated, indicating great potential to be cultivated on a commercial scale under Brazilian conditions. The parameters analyzed were similar or superior to the parameters of tomatoes grown in other cropping systems.

scholarly journals Postharvest Quality of Beetroots Grown Under Different Irrigation Depths and Ascorbic Acid Doses

2019 ◽  
Vol 11 (16) ◽  
pp. 180
Author(s):  
Anderson Carlos de Melo Gonçalves ◽  
Toshik Iarley da Silva ◽  
José Sebastião de Melo Filho ◽  
Joana Gomes de Moura ◽  
Leonardo Vieira de Sousa ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Ascorbic Acid ◽  
Polynomial Regression ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Mineral Matter ◽  
Total Soluble Solids ◽  
Randomized Design

Beetroot (Beta vulgaris L.) is a culture of great demand in Brazil due to its high nutritional value. However, water availability is a determining factor on its production. An alternative to reduce the damage caused by water stress is to apply organic solutes, such as ascorbic acid. The purpose hereof was to evaluate the postharvest quality of beetroots grown under different irrigation depths and ascorbic acid doses. The experiment was carried out in the Human, Social, and Agricultural Center’s Postharvest Physiology and Technology Laboratory of the Federal University of Paraíba, Bananeiras, Paraíba, Brazil, in a completely randomized design with five doses of ascorbic acid (0.00, 0.29, 1.00, 1.71, and 2.00 mM) and five irrigation depths (40.0%, 51.6%, 80.0%, 108.4%, and 120.0% of the evapotranspiration), combined according to each Box Central Compound experimental matrix, totaling nine treatments with five repetitions. The variables total soluble solids, electrical conductivity, hydrogenation potential, titratable acidity, total soluble solids and titratable acidity ratio, moisture, dry matter, and mineral matter were evaluated. The data were submitted for analysis of variance and polynomial regression. There was a significant interaction between the irrigation depths and the ascorbic acid doses in every variable, except for electrical conductivity and mineral matter. The postharvest characteristics of beetroots improved with applications of ascorbic acid doses in the thinner irrigation depths. The greatest dose of ascorbic acid (2 mM) in the thinner irrigation depth (40%) increases the postharvest quality of beet tuberous roots.

scholarly journals Effect of Postharvest Application of Aloe Vera Gel on Shelf Life, Activities of Anti-Oxidative Enzymes, and Quality of ‘Gola’ Guava Fruit

Foods ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1361
Author(s):  
Muhammad Adil Rehman ◽  
Muhammad Rafique Asi ◽  
Amjad Hameed ◽  
Leslie D. Bourquin
Keyword(s):  
Ascorbic Acid ◽  
Shelf Life ◽  
Aloe Vera ◽  
Soluble Solids ◽  
Life Extension ◽  
Oxidative Enzymes ◽  
Postharvest Quality ◽  
Ambient Conditions ◽  
Guava Fruit

Guava is an important climacteric fruits in terms of taste and aroma, which contains various vital nutrients such as minerals, carotenoids, ascorbic acid, and polyphenols. At ambient conditions, it exhibits a short shelf life, which makes it difficult for marketing and subsequent storage. Therefore, it is necessary to develop procedures to extend its shelf life and conserve quality. For this purpose, an aloe vera (AV) gel coating was assessed for its potential to enhance the shelf life of guava fruits. Guava fruits coated with AV gels (0, 20, 40, 60 and 80%, v/v) were evaluated for postharvest shelf life extension, changes in quality attributes, anti-oxidative activities, and flavonoid content when stored at ambient conditions (23 ± 2 °C and 70–75% relative humidity) for 12 days. The AV gel-treated fruits showed reduced increments in total sugar, malondialdehyde, and total carotene contents compared to untreated controls. AV gel-treated fruits exhibited higher contents of ascorbic acid, flavonoids (quercetin and rutin), and total phenolics in comparison to control fruits. Moreover, AV gel-treated fruits displayed greater activities of superoxide dismutase, catalase, and ascorbate peroxidase, along with higher antioxidant capacity and higher levels of total soluble solids, than untreated fruits. These results demonstrate that AV gel coating, especially at high concentrations, can be considered an eco-friendly and non-chemical substitute treatment for maintaining the postharvest quality of guava fruit.

scholarly journals Nitrogen Fertilization Affects Quality of Peach Puree

HortScience ◽  
1997 ◽  
Vol 32 (2) ◽  
pp. 284-287 ◽  
Author(s):  
P. Olienyk ◽  
A.R. Gonzalez ◽  
A. Mauromoustakos ◽  
W.K. Patterson ◽  
C.R. Rom ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Sensory Quality ◽  
Prunus Persica ◽  
Titratable Acidity ◽  
Color Difference ◽  
Soluble Solids ◽  
Solids Concentration ◽  
Hue Angle ◽  
Soluble Solids Concentration

Clingstone peach [Prunus persica (L.) Batsch cv. Allgold] trees were fertilized once with 45 or 90 kg N/ha at budbreak or twice with 22.5 or 45 kg N/ha at budbreak and after harvest. A nonfertilized control was included. Fruits from all treatments were made into puree, and objective and subjective qualities were evaluated. Puree from the N treatments and the control did not show significant differences in Color Difference Meter (CDM) `L' and hue angle, pH, titratable acidity (TA), soluble solids concentration (SSC), SSC: TA ratio, viscosity, ascorbic acid, Ca, K, phenolic and nitrates concentration. Puree from the control and 22.5 kg N/ha applied twice had significantly lower CDM `a', `b', and chroma values than from the other treatments. The split applications of N significantly reduced levels of Ca and ascorbic acid. N rate and number of applications interacted for `a' and K. When N was applied twice at 22.5 kg·ha-1, `a' and K decreased, but this response was absent when N was applied twice at 45 kg·ha-1. Puree from the nonfertilized control was rated lower by panelists for sensory quality than that from the fertilized trees. Peach puree from trees fertilized once with 45 kg N/ha at budbreak had the best overall sensory quality.

scholarly journals Performance of `Gala' Apple Grown on Seven Rootstocks in Illinois

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 793A-793
Author(s):  
Mosbah M. Kushad
Keyword(s):  
Production Rate ◽  
Ethylene Production ◽  
The Other ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Fruit Firmness ◽  
Yield Performance ◽  
Yield Efficiency ◽  
Ethylene Production Rate

Yield performance and postharvest quality of `Gala' apple on Mac.39, P.1, Mark M.26E, M.9E, B.9, and M.27E were evaluated. Trees on B.9 and Mark had the highest yield efficiency, while trees on P.1 and M.9E had the lowest yield efficiency. Trees on P.1 were most vigorous, while trees on B.9 and M.27E were least vigorous. Trees and fruit buds survived a –32C during Jan. 1994. Fruit firmness, soluble solids, starch, and ethylene production rate were similar in fruits from all seven rootstocks at harvest. However, after 3 months in storage, fruits from trees on M.27E, P.1, and Mark rootstocks were less firm than fruits from trees on the other four rootstocks. Glucose, fructose, sucrose, and sorbitol levels at harvest and after storage were similar in fruits from all rootstocks.

scholarly journals Market Quality Attributes of Orange-fleshed, Non-netted Honey Dew Melon Genotypes Following Different Growing Seasons and Storage Temperature Durations

2007 ◽  
Vol 17 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Gene E. Lester ◽  
Robert A. Saftner ◽  
D. Mark Hodges
Keyword(s):  
Food Safety ◽  
Storage Temperature ◽  
Fruit Size ◽  
The Other ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Breeding Line ◽  
Safety Issues ◽  
Growing Seasons ◽  
Solids Concentration

Orange-fleshed honey dew (Cucumis melo L., Inodorus group) fruit are known for having superior food-safety, food-quality, and fruit-marketability attributes compared with orange-fleshed netted muskmelon (C. melo, Reticulatus group) and to green-fleshed honey dew (C. melo, Inodorus group) fruit. However, little is known about the production market attributes and postharvest quality comparisons of the leading orange-fleshed honey dew cultivars. Five orange-fleshed honey dew genotypes (‘Honey Gold’, ‘Orange Delight’, ‘Orange Dew’, ‘Temptation’, and a breeding line) were glasshouse-grown in both fall and spring, harvested at abscission (full-slip), and compared after storage for 3–24 days in air at 5 or 10 °C. Fruit maturity (full-slip) was between 31 and 38 days after anthesis, with maturation dependent on genotype. Days to maturity were slightly longer in the fall than in the spring. Fruit size (number of fruit per standard commercial shipping box) was between four and six fruit per box. ‘Orange Dew’ consistently had the smallest fruit (six per box), and the breeding line had the largest (four per box). ‘Orange Delight’ and ‘Orange Dew’ had the fewest whole-fruit disorders and the highest percentage of marketable fruit at harvest and following 24 days of storage at 5 or 10 °C. ‘Orange Delight’, ‘Orange Dew’, and the breeding line consistently had a more yellow peel, whereas ‘Honey Gold’ and ‘Temptation’ fruit peels had a more greenish hue. Whole-fruit firmness was 10–25 N among the cultivars and 24–35 N for the breeding line. Internal-fruit disorders, percentage marketability, and mesocarp (pulp) firmness reflected each genotype's whole-fruit attributes. ‘Orange Delight’ and ‘Orange Dew’ fruit consistently had among the highest soluble solids concentration and relative sweetness ratings, and their pulp had a more intense orange hue and lower lightness than those of the other genotypes. After 24 days of storage, ‘Orange Delight’ and ‘Orange Dew’ maintained their higher sweetness and more orange hue in both spring and fall harvests; however, depending on harvest, they were not always significantly sweeter or more orange-hued than some of the other genotypes. Our results indicate that orange-fleshed honey dew fruit are a promising new melon type suitable as a substitute for orange-fleshed netted muskmelon fruit not only for food-safety issues but also for overall marketable quality.

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