scholarly journals Heat Treatments for Improved Postharvest Quality of Horticultural Crops

1992 ◽  
Vol 2 (3) ◽  
pp. 316-320 ◽  
Author(s):  
Joshua D. Klein ◽  
Susan Lurie
Keyword(s):  
Fruit Ripening ◽  
Heat Treatments ◽  
Natural Resistance ◽  
Postharvest Quality ◽  
Pathogen Infection ◽  
Horticultural Crops ◽  
Physiological Disorders ◽  
Storage Temperatures

Commercial, ecological, and agrotechnical considerations have recently renewed interest in the use of physical rather than chemical means to maintain postharvest quality of horticultural crops. This review discusses prestorage heat treatments that protect against physiological disorders, enhance natural resistance to pathogen infection, reversibly inhibit fruit ripening, and permit flexibility in storage temperatures.

scholarly journals Postharvest quality of pepino melon (Solanum muricatum Aiton) as influenced by NPK fertilizer rates, growing environment and storage temperature

2021 ◽  
Vol 35 (1) ◽  
Author(s):  
Carol Mutua ◽  
Joshua Ogweno ◽  
Robert Gesimba
Keyword(s):  
Low Temperature ◽  
Shelf Life ◽  
Room Temperature ◽  
Postharvest Quality ◽  
Solanum Muricatum ◽  
Npk Fertilizer ◽  
And Storage ◽  
Fertilizer Rates ◽  
Storage Temperatures

The present study evaluated the effect of NPK fertilizer (17:17:17) rates (0, 100, 200, 300 and 400 kg ha-1) on the postharvest quality of field and greenhouse grown pepino melons (Solanum muricatum Ait.) stored at room temperature (15-22°C) and at low temperature (7°C). The study was carried out in randomized complete block design with fruits from the field and greenhouse, five NPK fertilizer rates as treatments and the two storage temperatures replicated three times. Data were collected on percentage fruit weight loss (PWL), total soluble solids (TSS), firmness and shelf life. Results indicated that greenhouse and field grown fruits from the control and plants supplied with 100 kg NPK ha-1 had low PWL at both storage temperatures. Field grown fruits from the control stored at room temperature had the highest TSS and were firmer after 28 days of storage. Field grown fruits not supplied with fertilizer and stored at low temperature had a shelf life of 27 and 26 days in trial one and two respectively. Application of 100 kg NPK ha-1 and storage of pepino melon fruits at low temperature can be used to enhance quality and shelf life.

scholarly journals Conservation of Alstroemeria cut flowers stored under refrigeration

2020 ◽  
Vol 43 ◽  
pp. e50016
Author(s):  
Vanessa Cury Galati ◽  
Ana Carolina Corrêa Muniz ◽  
João Emmauel Ribeiro Guimarães ◽  
Claudia Machado Fabrino Mattiuz ◽  
Ben Hur Mattiuz
Keyword(s):  
Storage Period ◽  
Postharvest Quality ◽  
Cut Flowers ◽  
Floral Longevity ◽  
Randomized Design ◽  
Significant Difference ◽  
Relative Water ◽  
Peroxidase Enzymes ◽  
Storage Temperatures

Alstroemeria flowers have shown great importance in the world trade of cut flowers due mainly to its beauty and wide variety of colors. However, the durability of its inflorescences is usually hampered by the rapid yellowing of the leaves, which impairs their decorative quality. Cut flowers require the use of technologies to improve postharvest quality and floral longevity. This research aimed to study the postharvest conservation of inflorescences of Alstroemeria cv. Ajax at different storage temperatures. Floral stems were placed in containers with distilled water and stored at four temperatures (4, 8, 12, and 22ºC) for 12 days. The following analyses were performed: fresh mass variation, respiratory activity, relative water content, soluble and reducing carbohydrate contents, polyphenol-oxidase and peroxidase enzymes, pigments (anthocyanin and carotenoids), and longevity. The experiment was conducted in a completely randomized design, the results were submitted to analysis of variance (ANOVA), and the effect of treatments submitted to F-test. Significant differences were compared using the least significant difference (LSD) at 95% confidence interval (p ≤ 0. 05). The temperatures of 8 and 12ºC were effective in maintaining the postharvest quality of inflorescences during storage period, as they remained turgid due to transpiration reduction caused by low temperatures, and longevity reaching 46 and 22 days, respectively.

scholarly journals Strategies to Preserve Postharvest Quality of Horticultural Crops and Superficial Scald Control: From Diphenylamine Antioxidant Usage to More Recent Approaches

Antioxidants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 356 ◽  
Author(s):  
Cindy Dias ◽  
Ana L. Amaro ◽  
Ângelo C. Salvador ◽  
Armando J. D. Silvestre ◽  
Sílvia M. Rocha ◽  
...  
Keyword(s):  
State Of The Art ◽  
Antioxidant Properties ◽  
Storage Conditions ◽  
Alternative Methods ◽  
Postharvest Quality ◽  
Superficial Scald ◽  
Horticultural Crops ◽  
Horticultural Products ◽  
Chemical Strategies

Horticultural crops are vulnerable to several disorders, which affect their physiological and organoleptic quality. For about forty years, the control of physiological disorders (such as superficial scald) in horticultural crops, particularly in fruit, was achieved through the application of the antioxidant diphenylamine (DPA), usually combined with controlled atmosphere (CA) conditions. However, identification of DPA residues and metabolites in treated fruits, associated with their toxicity, banned the use of this antioxidant in Europe. This triggered the urgent need for novel and, ideally, natural and sustainable alternatives, combined with adequate storage conditions to protect cultivars from harmful agents. This review systematizes the state-of-the-art DPA application on several fresh cultivars, such as apples, pears, and vegetables (potatoes, spinach, etc.), as well as the possible mechanisms of the action and effects of DPA, emphasizing its antioxidant properties. Alternative methods to DPA are also discussed, as well as respective effects and limitations. Recent research on scald development molecular pathways are highlighted to open new non-chemical strategies opportunities. This appraisal shows that most of the current solutions have not lead to satisfactory commercial results; thus, further research aimed to understand the mechanisms underlying postharvest disorders and to design sustainable and safe solutions to improve horticultural products storage is needed.

scholarly journals 110 Postharvest Quality of Tamarillo Fruits under Different Storage Temperatures

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 407F-408
Author(s):  
J.E. Manzano-Méndez ◽  
J.G. Diaz
Keyword(s):  
Storage Time ◽  
Fruit Weight ◽  
Postharvest Quality ◽  
Soluble Solid ◽  
Increasing Temperature ◽  
And Storage ◽  
Plastic Containers ◽  
Storage Temperatures ◽  
Green Stage

Tamarillo (Cyphomandra betacea L.) fruits, grown in the Venezuela Andes farms, were harvested at mature-green stage, graded, selected, washed, and transported to the posharvest lab. for analysis. Fruits were stored into plastic containers in storage rooms at (5, 10, and 15 °C for 3 weeks. The soluble solid concentration (SSC), pH, tritatable acidity (TA), ratio SSC/TA, color: L*, Hue, Chroma, color index (a+b)/L × 100, texture, and fresh fruit weight loss (FFWL) in pulp extract and in the whole fruit were determined on the first day of harvest and at the end of each storage week. These parameters ranged as follows: SSC: 7.92–8.84%, pH: 4.06–4.35, TA: 1.14%–1.21% (expressed as citric acid), SSC/TA: 1.58–1.75, Chroma 42.72—45.54, FFWL: 0.83% at the second storage day to 4.39% at the 3rd storage week. Also, FFWL was 1.03%–1.40% for 10 and 15 °C, respectively. Fruits stored at the highest temperature increased pH values, the TA decreased with stored time, the Chroma and FFWL values increased with the increasing temperature and storage time.

scholarly journals The Applications of Molecular Hydrogen in Horticulture

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 513
Author(s):  
Longna Li ◽  
Yan Zeng ◽  
Xu Cheng ◽  
Wenbiao Shen
Keyword(s):  
Carbon Dioxide Emissions ◽  
Molecular Hydrogen ◽  
Hydrogen Gas ◽  
Postharvest Quality ◽  
Low Carbon ◽  
Horticultural Crops ◽  
Positive Effects ◽  
Yield And Quality ◽  
Cost Efficient

Improvements in the growth, yield, and quality of horticultural crops require the development of simply integrated, cost-efficient, and eco-friendly solutions. Hydrogen gas (H2) has been observed to have fertilization effects on soils by influencing rhizospheric microorganisms, resulting in improvements in crop yield and quality. Ample studies have shown that H2 has positive effects on horticultural crops, such as promoting root development, enhancing tolerance against abiotic and biotic stress, prolonging storage life, and improving postharvest quality of fruits, vegetables and cut flowers. In this review, we aim to evaluate the feasibility of molecular hydrogen application in horticulture and the strategies for its application, including H2 delivery methods, treatment timing, and the concentration of H2 applied. The discussion will be accompanied by outlining the effects of H2 and the likely mechanisms of its efficacy. In short, the application of H2 may provide novel opportunities for simple and cost efficient improvements of horticultural production in terms of increased yield and product quality but with low carbon dioxide emissions.

scholarly journals IMPACTS OF NORTH CAROLINA'S EXTENSION POSTHARVEST TECHNOLOGY PROGRAMS AND PUBLICATIONS

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 754d-754 ◽  
Author(s):  
L.G. Wilson ◽  
M.D. Boyette ◽  
E.A. Estes
Keyword(s):  
North Carolina ◽  
Cooling System ◽  
Storage System ◽  
Postharvest Quality ◽  
Air Cooling ◽  
Horticultural Crops ◽  
Air Cooling System ◽  
Forced Air ◽  
And Storage

Extension postharvest quality maintenance programs in North Carolina were significantly enhanced by engineering inputs and Exxon violation escrow funds. Equipment and storage designs and recommendations have provided tangible results for North Carolina horticultural crops producers and shippers, including “Cool and Ship,” a portable, pallet-size forced-air cooling system, thermal storage immersion hydrocooling systems, and the horizontal air flow sweetpotato curing and storage system. Impacts include: 30% to 50% blueberry and strawberry loss reductions using forced-air cooling; and 20% to 30% sweetpotato packout rate increases when cured and stored with the new system. Useful materials include a video on cooling options, a computer decision aid for precooling, a storage poster, and more than two dozen publications on Maintaining the Quality of North Carolina Fresh Produce.

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