scholarly journals Shelf Life Determination of Fresh Blueberries (Vaccinium corymbosum) Stored under Controlled Atmosphere and Ozone

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Anibal Concha-Meyer ◽  
Joseph D. Eifert ◽  
Robert C. Williams ◽  
Joseph E. Marcy ◽  
Gregory E. Welbaum
Keyword(s):  
Weight Loss ◽  
Shelf Life ◽  
Vaccinium Corymbosum ◽  
Controlled Atmosphere ◽  
Controlled Atmospheres ◽  
Low Concentrations ◽  
Highbush Blueberries ◽  
Air Control ◽  
Atmosphere Storage

Fresh blueberries are commonly stored and transported by refrigeration in controlled atmospheres to protect shelf life for long periods of storage. Ozone is an antimicrobial gas that can extend shelf life and protect fruit from microbial contamination. Shelf life of fresh highbush blueberries was determined over 10-day storage in isolated cabinets at 4°C or 12°C under different atmosphere conditions, including air (control); 5% O2 : 15% CO2 : 80% N2(controlled atmosphere storage (CAS)); and ozone gas (O3) 4 ppm at 4°C or 2.5 ppm at 12°C, at high relative humidity (90–95%). Samples were evaluated for yeast and molds growth, weight loss, and firmness. CAS and O3did not delay or inhibit yeast and molds growth in blueberries after 10 days at both temperatures. Fruit stored at 4°C showed lower weight loss values compared with 12°C. Blueberries stored under O3atmosphere showed reduced weight loss at 12°C by day 10 and loss of firmness when compared to the other treatments. Low concentrations of ozone gas together with proper refrigeration temperature can help protect fresh blueberries quality during storage.

Survival of Listeria monocytogenes on Fresh Blueberries (Vaccinium corymbosum) Stored under Controlled Atmosphere and Ozone

2014 ◽  
Vol 77 (5) ◽  
pp. 832-836 ◽  
Author(s):  
ANIBAL CONCHA-MEYER ◽  
JOSEPH EIFERT ◽  
ROBERT WILLIAMS ◽  
JOSEPH MARCY ◽  
GREGORY WELBAUM
Keyword(s):  
Listeria Monocytogenes ◽  
Foodborne Pathogen ◽  
Acid Tolerance ◽  
Vaccinium Corymbosum ◽  
Microbial Inactivation ◽  
Controlled Atmosphere ◽  
Atmospheric Conditions ◽  
Highbush Blueberries ◽  
Air Control ◽  
Atmosphere Storage

Listeria monocytogenes is a foodborne pathogen that represents a high risk for consumers because it can grow under refrigeration conditions and can also develop acid tolerance. Fresh blueberries are hand-picked, packed, and transported under refrigeration without receiving a microbial inactivation treatment. The aim of this work was to study the survival of L. monocytogenes in fresh highbush blueberries stored at 4 or 12°C under different controlled atmosphere conditions, including air (control); 5% O2, 15% CO2, 80% N2 (controlled atmosphere storage [CAS]); or ozone gas (O3), 4 ppm at 4°C or 2.5 ppm at 12°C, at high relative humidity (90 to 95%) for a total of 10 days. Fresh blueberries inside a plastic clamshell were spot inoculated with the bacteria and were stored at 4 or 12°C in isolated cabinets under air, CAS, and O3 atmospheric conditions. Samples were evaluated on days 0, 1, 4, 7, and 10 for microbial growth using modified Oxford agar. CAS did not delay or inhibit L. monocytogenes growth in fresh blueberries after 10 days. O3 achieved 3- and 2-log reductions when compared with air treatment at 4 and 12°C, respectively. Low concentrations of O3 together with proper refrigeration temperature can ensure product safety throughout transportation. O3 is a strong antimicrobial that safely decomposes to oxygen and water without leaving residues and can be used as an alternative method to prevent bacterial growth during a long transport period.

scholarly journals The effects of rapid chilling and storage conditions on the quality of Brigitta Blue cultivar highbush blueberries (Vaccinium corymbosum L.)

2014 ◽  
Vol 26 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Karolina Kozos ◽  
Ireneusz Ochmian ◽  
Piotr Chełpiński
Keyword(s):  
Storage Conditions ◽  
Vaccinium Corymbosum ◽  
Fresh Fruit ◽  
Controlled Atmosphere ◽  
Controlled Atmosphere Storage ◽  
Cold Room ◽  
Highbush Blueberries ◽  
Atmosphere Storage ◽  
And Storage

ABSTRACT Controlled atmosphere storage allows for the long-term and short-term storage of fruit without a significant decrease in quality, resulting in a longer shelflife of fresh fruit. The Department of Horticulture at the West Pomeranian University of Technology in Szczecin conducted research on the effects of post-harvest precooling (3-4°C within two hours) and storage conditions (conventional cold room and controlled atmosphere storage) on fruit firmness, chemical composition, colour and weight loss. After six weeks of storage, it was found that the quality of fruit had declined. In comparison with fresh fruit, the harvest was found to have lost weight and darkened in colour. In addition, a decrease in firmness and the content of ascorbic acid and polyphenolic compounds was also observed. The fruits that were stored in a cold room with a controlled atmosphere and rapidly chilled immediately after harvest were the least affected. In addition, the research showed that there was a high correlation between the anthocyanin index and the polyphenol content in the fruits. To maintain the high quality of the fruit, the fruit must be very rapidly cooled soon after harvest and stored under optimal conditions - a cold room with a controlled atmosphere.

scholarly journals The Influence of 1-MCP on Shelf-Life Quality of Highbush Blueberry

HortScience ◽  
2003 ◽  
Vol 38 (3) ◽  
pp. 417-418 ◽  
Author(s):  
John M. DeLong ◽  
Robert K. Prange ◽  
Conny Bishop ◽  
Peter A. Harrison ◽  
Daniel A.J. Ryan
Keyword(s):  
Shelf Life ◽  
Good Condition ◽  
Life Quality ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Controlled Atmosphere ◽  
Life Period ◽  
Highbush Blueberries ◽  
Marketable Fruit

To determine if postharvest treatments of 1-methylcyclopropene (1-MCP) retard the senescence of highbush blueberries (Vaccinium corymbosum L.) removed from storage, `Burlington' (early) and `Coville' (late) fruit were harvested from four experimental sites and treated for 24 hours at 20 °C with 0 (control), 25 (low), 100 (medium), or 400 (high) nL·L-1 of 1-MCP. All fruit were then stored in a controlled atmosphere of 10-15 kPa O2 and 10 kPa CO2 at -1 to 1 °C for 4, 8, and 12 weeks, followed by a 20 °C shelf-life of up to 20 days. During the shelf-life period immediately after harvest and those following each storage removal, percent marketable fruit (PMF) were calculated daily as: [fruit in good condition]/[total berry number] × 100. Changes in PMF were not affected by 1-MCP treatment; hence, we conclude that 1-MCP at rates up to 400 nL·L-1 does not alter the shelf-life quality of the highbush blueberry cultivars tested.

Breakdown and weight loss in Red Jonathan apples in controlled atmosphere storage

1968 ◽  
Vol 8 (34) ◽  
pp. 630
Author(s):  
KJ Scott ◽  
RBH Wills ◽  
EA Roberts
Keyword(s):  
Carbon Dioxide ◽  
Weight Loss ◽  
Calcium Chloride ◽  
Controlled Atmosphere ◽  
Cent Oxygen ◽  
Controlled Atmosphere Storage ◽  
Controlled Atmospheres ◽  
Oxygen Levels ◽  
Cent Carbon Dioxide ◽  
Atmosphere Storage

Red Jonathan apples were stored at 32�F in 5 per cent carbon dioxide and 16 per cent oxygen in the presence of calcium chloride. The incidence of breakdown decreased linearly as weight loss was increased. Thus carbon dioxide and oxygen levels, and weight loss may all affect the incidence of breakdown in apples in controlled atmospheres. Without information on weight loss to ensure that there is no confounding, conclusions about the effects of carbon dioxide and oxygen may be misleading,

scholarly journals VARIABLE OXYGEN AND CARBON DIOXIDE CONCENTRATIONS DURING CONTROLLED ATMOSPHERE STORAGE OF `GOLDEN DELICIOUS' APPLES

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 254E-255
Author(s):  
Laura Lehman-Salada ◽  
George M. Greene
Keyword(s):  
Weight Loss ◽  
Storage Period ◽  
Controlled Atmosphere ◽  
Gas Composition ◽  
Controlled Atmosphere Storage ◽  
Carbon Dioxide Concentrations ◽  
Golden Delicious ◽  
Period Variable ◽  
Flesh Browning ◽  
Atmosphere Storage

In both experiments. 20-apple samples from 6 commercial orchards were harvested and stored in 208 liter containers at 0C for 4, 6, and 8 months. Additional samples were removed from CA and held at 0C for 14 days before evaluation. Gas composition was measured and controlled 6 times per day using automatic control equipment. In the first experiment, samples were stored at constant 0.0% CO2 and one of three O2 regimes (constant 2.0%. 0.5 rising to 3.5%. or 3.5% falling to 0.5% O2). Apples stored at 3.5% falling to 0.5% O2 during the storage period were softer than apples held at constant 2.0% or those held at 0.5% rising to 3.5% O2 during the storage period. Variable O2 concentrations did not influence weight loss during storage and insignificant scald, flesh browning, core browning, rot, and low 02 injury were observed. In the second experiment, samples were stored at constant 2.0% O2 and one of three CO2 regimes (constant 0%, constant 5%. or 0% rising to 6% CO2). Constant 5% or rising CO2 conditions did not significantly influence flesh softening or weight loss during storage. Negligible CO2 injury was observed.

scholarly journals Effect of Cultivar, Controlled Atmosphere Storage, and Fruit Ripeness on the Long-term Storage of Highbush Blueberries

2008 ◽  
Vol 18 (2) ◽  
pp. 199-205 ◽  
Author(s):  
Jim Hancock ◽  
Pete Callow ◽  
Sedat Serçe ◽  
Eric Hanson ◽  
Randy Beaudry
Keyword(s):  
Ambient Air ◽  
Controlled Atmosphere ◽  
Storage Quality ◽  
Controlled Atmosphere Storage ◽  
Long Term Storage ◽  
Significant Difference ◽  
Highbush Blueberries ◽  
Atmosphere Storage ◽  
Resistant Genotypes

Controlled-atmosphere storage had little effect on the quality of fruit of eight cultivars held under 2 kPa oxygen (O2) and 8 kPa carbon dioxide (CO2) versus ambient air. ‘Elliott’ fruit harvested from bushes with only 30% ripe fruit had significantly better storage quality than fruit picked later; however, there was no significant difference in the storage life of fruit that was stored fully blue versus partially green. Fruit from the first harvest of four cultivars had superior storage quality to that of the second. In one comparison of the long-term storability of nine cultivars, ‘Bluegold’, ‘Brigitta’, and ‘Legacy’ performed the best, storing for 4 to 7 weeks. In another postharvest trial of 17 cultivars, ‘Brigitta’ stored the longest (8 weeks) followed by ‘Aurora’ and ‘Draper’ (7 weeks). The most resistant genotypes to Alternaria spp. were ‘Brigitta’, ‘Aurora’, ‘Elliott’, and ‘Draper’, whereas the most resistant genotypes to Colletotrichum spp. were ‘Elliott’, ‘Brigitta’, ‘Toro’, ‘Draper’, and ‘Bluejay’.

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