INVESTIGATION ON COLD STORAGE CAPACITY OF EARLY AND MID RIPENING APPLE CULTIVARS OF IRAN

Canadian exports of fresh carrots to the United States have increased substantially in recent years. The depreciation of the Canadian dollar against the U.S. dollar has been a major factor. Canadian government subsidies also may have had an impact by accelerating the construction of cold storage facilities. These have permitted the marketing period to be extended. However, an analysis of costs and returns suggests that cold storage of carrots is commercially profitable. Storage capacity would probably have increased without government aid. The returns to storage and the change in exchange rates are the primary factors contributing to the expansion of Canadian exports.

Download Full-text

Phenolic Compounds of apples in the relation to the postharvest diseases

Czech Journal of Food Sciences ◽

10.17221/10646-cjfs ◽

2004 ◽

Vol 22 (SI - Chem. Reactions in Foods V) ◽

pp. S163-S165 ◽

Cited By ~ 2

Author(s):

M. Ducháčková ◽

J. Schovánková ◽

H. Opatová

Keyword(s):

Phenolic Compounds ◽

Antifungal Activity ◽

Cold Storage ◽

Phenolic Content ◽

Plant Phenolics ◽

Postharvest Diseases ◽

Naturally Occurring ◽

Apple Cultivars

This investigation deals with the antifungal activity of naturally occurring phenolic compounds and the metabolism of plant phenolics during the cold storage. In the experiment the apple cultivars with different diseases resistance were analyzed in the relation to changes in phenolic content.

Download Full-text

Structural differences arise between fruit cuticles of two apple cultivars during long term cold storage

International Journal of Horticultural Science ◽

10.31421/ijhs/24/3-4/1551 ◽

2018 ◽

Vol 24 (3-4) ◽

pp. 26-29

Author(s):

R. Oszlányi ◽

M. Tóth ◽

L. Szabó ◽

I. Papp

Keyword(s):

Weight Loss ◽

Cold Storage ◽

Fruit Weight ◽

Vapour Permeability ◽

Micro Cracks ◽

Apple Cultivars ◽

Area Unit ◽

The Relationship ◽

Fruit Surface

Apple fruits are covered by hydrophobic cuticle that provides protection against desiccation, pathogens, excessive water absorption and radiation. The features of cuticle affect the quality and storability of the fruits. It was aimed to evaluate the correlation between peel ultrastructure and weight loss in fruits covered by waxy bloom (cv. Florina) and without bloom (cv. Red Rome van Well) during 4-month cold storage. SEM (scanning electron microscopy) was used for visualization of the fruit surface and fruit weight was also measured. Several studies have revealed that there may be correlation between the ultrastructure of cuticle and its water permeability. Our results confirmed this phenomenon in case of two cultivars. The weight loss per fruit surface area unit of ‘Florina’ was found significantly higher than that of ‘Red Rome van Well’. At the same time the cuticular surface of the fruits contained more micro-cracks in case of the former cultivar. These data confirmed the relationship between the density of cuticular micro-cracks and the water vapour permeability. We concluded that this feature is more significant than the amount of natural waxy bloom on fruit surface.

Download Full-text

A comparison of apple cultivars regarding ethylene production and physico-chemical changes during cold storage

Horticultural Science ◽

10.17221/653-hortsci ◽

2008 ◽

Vol 35 (No. 4) ◽

pp. 137-144 ◽

Cited By ~ 1

Author(s):

J. Goliáš ◽

P. Mýlová ◽

A. Němcová

Keyword(s):

Cold Storage ◽

Ethylene Production ◽

Titratable Acidity ◽

Soluble Solids ◽

Light Hydrocarbons ◽

Titratable Acid ◽

Physico Chemical ◽

Golden Delicious ◽

Apple Cultivars ◽

Sugar Levels

Measurements of titratable acidity, soluble solids, firmness, ethylene production and weight loss were made for five apple cultivars held in cold storage for 100 days. Carbosieve G in the traps of the enrichment column, which has only a moderate affinity for light hydrocarbons, was found to meet the requirements for the optimal thermal desorption of ethylene (130°C for 2 minutes) from the enrichment column to the analytical column. ANOVA showed significant differences in all these five parameters between the five cultivars Golden Delicious Reinders, Resista, Topaz, Meteor and Rubinstep, and also in the course of storage. In all cases, the changes in titratable acids measured during storage were especially significant, but the observed changes in sugar levels, as measured by refractometry, were too variable to be useful in this context. High rates of ethylene production impacted probably only indirectly on the loss of firmness and the other parameters which were measured. Discriminant analysis of the measurements of firmness, ethylene production and titratable acid provided the best means of differentiating the cultivars, although Golden Delicious Reinders and Resista still could not be completely separated. Other parameters (soluble solids and loss in weight) did not contribute to the discriminant resolution.

Download Full-text

Comparison of textural and ultrastructural characteristics of four apple cultivars with different textures during cold storage

International Journal of Food Properties ◽

10.1080/10942912.2019.1599908 ◽

2019 ◽

Vol 22 (1) ◽

pp. 659-669

Author(s):

Hongguang Li ◽

Junling Liu ◽

Xu Zhang ◽

Zhenzhen Zhu ◽

Huijuan Yang ◽

...

Keyword(s):

Cold Storage ◽

Apple Cultivars ◽

Ultrastructural Characteristics

Download Full-text

The operational impact of deploying SARS-CoV-2 vaccines in countries of the WHO African Region

10.1101/2020.08.13.20147595 ◽

2020 ◽

Author(s):

Justin R. Ortiz ◽

Joanie Robertson ◽

Jui-Shan Hsu ◽

Stephen L. Yu ◽

Amanda J. Driscoll ◽

...

Keyword(s):

Chronic Diseases ◽

Cold Storage ◽

Storage Capacity ◽

National Level ◽

Risk Groups ◽

Routine Immunization ◽

Cold Chain ◽

African Region ◽

Immunization Services ◽

Vaccination Campaigns

ABSTRACTBackgroundWhen available, SARS-CoV-2 vaccines will be deployed to countries with limited immunization systems.MethodsWe conducted an immunization capacity assessment of a simulated WHO African Region country using region-specific data on immunization, population, healthcare workers (HCWs), vaccine cold storage capacity (quartile values for national and subnational levels), and characteristics of influenza vaccines to represent future SARS-CoV-2 vaccines. We calculated monthly increases in vaccine doses, doses per vaccinator, and cold storage volumes for four-month SARS-CoV-2 vaccination campaigns targeting risk groups compared to routine immunization baselines.FindingsAdministering SARS-CoV-2 vaccines to risk groups would increase total monthly doses by 27.0% for ≥65 years, 91.7% for chronic diseases patients, and 1.1% for HCWs. Assuming median nurse density estimates adjusted for absenteeism and proportion providing immunization services, SARS-CoV-2 vaccination campaigns would increase total monthly doses per vaccinator by 29.3% for ≥65 years, 99.6% for chronic diseases patients, and 1.2% for HCWs. When we applied quartiles of actual African Region country vaccine storage capacity, routine immunization vaccine volumes exceeded national-level storage capacity for at least 75% of countries, but subnational levels had sufficient storage capacity for SARS-CoV-2 vaccines for at least 75% of countries.InterpretationIn the WHO African Region, SARS-CoV-2 vaccination campaigns would substantially increase doses per vaccinator and cold chain capacity requirements over routine immunization baselines. Pandemic vaccination campaigns would add volume to national-level stores already at their limits, but sufficient capacity exists at subnational levels. Immediate attention to strengthening immunization systems is essential to support pandemic responses.FundingNone

Download Full-text