Physiological and microbiological changes in fresh-cut pears stored in high oxygen active packages compared with low oxygen active and passive modified atmosphere packaging

2008 ◽  
Vol 48 (2) ◽  
pp. 295-301 ◽  
Author(s):  
G. Oms-Oliu ◽  
R. Soliva-Fortuny ◽  
O. Martín-Belloso
Keyword(s):  
Modified Atmosphere Packaging ◽  
High Oxygen ◽  
Modified Atmosphere ◽  
Low Oxygen ◽  
Fresh Cut

scholarly journals Influence of Oxygen and Temperature on the Respiration Rate of Fresh-cut Cantaloupe and Implications for Modified Atmosphere Packaging

HortScience ◽  
2012 ◽  
Vol 47 (8) ◽  
pp. 1113-1116 ◽  
Author(s):  
M. Helena Gomes ◽  
Randolph M. Beaudry ◽  
Domingos P.F. Almeida
Keyword(s):  
Steady State ◽  
Shelf Life ◽  
Respiration Rate ◽  
Modified Atmosphere Packaging ◽  
Life Extension ◽  
Modified Atmosphere ◽  
Low Oxygen ◽  
Fundamental Information ◽  
Respiratory Behavior ◽  
Fresh Cut

The respiratory behavior of fresh-cut melon under modified atmosphere packaging at various temperatures was characterized to assess the potential for shelf life extension through low-oxygen and to generate information for the development of appropriate packaging conditions. Cantaloupe melon (Cucumis melo var. cantalupensis ‘Olympic Gold’) cubes were packaged and stored at 0, 5, 10, and 15 °C. Packages attained gas equilibrium after 5 days at 10 °C, 6 days at 5 °C, and 10 days at 0 °C. In cubes stored at 15 °C, decay started before steady-state gas levels were reached. Respiration rates were measured and respiratory quotient calculated once steady-state O2 and CO2 partial pressures were achieved inside the packages. O2 uptake increased with temperature and O2 partial pressure (pO2 pkg), according to a Michaelis-Menten kinetics described by = [( × pO2 pkg)/( + pO2 pkg)]. Respiratory parameters were modeled as an exponential function of temperature: = {[1.34 × 10−17 × e(0.131 × T) × pO2 pkg]/[1.15 × 10−24 × e(0.193 × T) + pO2 pkg]} (R2 = 0.95), Q10 = 3.7, and Ea = 84 kJ·mol−1. A good fit to the experimental data was also obtained considering as constant: RO2 = {[4.36 × 10−14 × e(0.102 × T) × pO2 pkg]/[0.358 + pO2 pkg]} (R2 = 0.93), Q10 = 2.8, and Ea = 66 kJ·mol−1. These results provide fundamental information to predict package permeability and steady-state pO2 pkg required to prevent anaerobic conditions and maximize shelf life of fresh-cut cantaloupe. The kinetics of respiration as a function of pO2 suggests that no significant reductions in respiration rate of fresh-cut cantaloupe can be achieved by lowering O2 levels.

Effect of High Oxygen Modified Atmosphere Packaging on Browning Characteristics of Fresh-Cut ‘Fuji’ Apple

2011 ◽  
Vol 236-238 ◽  
pp. 2391-2394
Author(s):  
Yan Wen Zhou ◽  
Sen Wan ◽  
Xi Hong Li ◽  
Ting Xue
Keyword(s):  
Ascorbic Acid ◽  
Modified Atmosphere Packaging ◽  
High Oxygen ◽  
Total Phenol ◽  
Modified Atmosphere ◽  
Positive Correlation ◽  
Potential Alternative ◽  
Fuji Apple ◽  
Fresh Cut ◽  
Cut Surface

Fresh-cut ‘Fuji’ apples were stored in modified atmosphere packaging (MAP) of 20%, 60% or 100% O2(balance N2) at 4 °C for 10 days, to determine the effects of high oxygen atmospheres on browning characteristics (color, total phenol (TP) and ascorbic acid (AA)) throughout the storage. Treatments with 60% and 100% O2significantly inhibited cut-surface browning, in particular the 60% O2. The 100% O2treatment was the most effective in controlling AA content (approximately 1.6-fold higher than 20% O2byday 10), while it kept a lower TP content during the storage, indicating the positive correlation between AA and TP. In general, these data suggested that high oxygen atmospheres may provide a potential alternative for browning control on fresh-cut ‘Fuji’ apple.

Spoilage and Safety Characteristics of Ground Beef Packaged in Traditional and Modified Atmosphere Packages

2008 ◽  
Vol 71 (2) ◽  
pp. 293-301 ◽  
Author(s):  
J. C. BROOKS ◽  
M. ALVARADO ◽  
T. P. STEPHENS ◽  
J. D. KELLERMEIER ◽  
A. W. TITTOR ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Modified Atmosphere Packaging ◽  
Ground Beef ◽  
High Oxygen ◽  
Aerobic Bacteria ◽  
Rosemary Extract ◽  
Modified Atmosphere ◽  
Low Oxygen ◽  
Beef Patties ◽  
Changes Over Time

Two separate studies, one with pathogen-inoculated product and one with noninoculated product, were conducted to determine the safety and spoilage characteristics of modified atmosphere packaging (MAP) and traditional packaging of ground beef patties. Ground beef patties were allotted to five packaging treatments (i) control (foam tray with film overwrap; traditional), (ii) high-oxygen MAP (80% O2, 20% CO2), (iii) high-oxygen MAP with added rosemary extract, (iv) low-oxygen carbon monoxide MAP (0.4% CO, 30% CO2, 69.6% N2), and (v) low-oxygen carbon monoxide MAP with added rosemary extract. Beef patties were evaluated for changes over time (0, 1, 3, 5, 7, 14, and 21 days) during lighted display. Results indicated low-oxygen carbon monoxide gas flush had a stabilizing effect on meat color after the formation of carboxymyoglobin and was effective for preventing the development of surface discoloration. Consumers indicated that beef patties packaged in atmospheres containing carbon monoxide were more likely to smell fresh at 7, 14, and 21 days of display, but the majority would probably not consume these products after 14 days of display because of their odor. MAP suppressed the growth of psychrophilic aerobic bacteria when compared with control packages. Generally, control packages had significantly higher total aerobic bacteria and Lactobacillus counts than did modified atmosphere packages. In the inoculated ground beef (approximately 105 CFU/g) in MAP, Escherichia coli O157 populations ranged from 4.51 to 4.73 log CFU/g with no differences among the various packages, but the total E. coli O157:H7 in the ground beef in the control packages was significantly higher at 5.61 log CFU/g after 21 days of storage. On days 14 and 21, the total Salmonella in the ground beef in control packages was at 5.29 and 5.27 log CFU/g, respectively, which was significantly higher than counts in the modified atmosphere packages (3.99 to 4.31 log CFU/g on day 14 and 3.76 to 4.02 log CFU/g on day 21). Data from these studies indicate that MAP suppresses pathogen growth compared with controls and that spoilage characteristics developed in MAP packages.

scholarly journals High carbon-di-oxide modified atmospheric packaging on quality of ready-to-eat minimally processed fresh-cut iceberg lettuce

2021 ◽  
Author(s):  
Md. Azizul Haque ◽  
Md. Asaduzzaman ◽  
Md. Sultan Mahomud ◽  
Md. Rizvi Alam ◽  
Alin Khaliduzzaman ◽  
...  
Keyword(s):  
Modified Atmosphere Packaging ◽  
Storage Condition ◽  
Modified Atmosphere ◽  
High Carbon ◽  
Modified Atmospheric Packaging ◽  
Iceberg Lettuce ◽  
Microbial Development ◽  
Fresh Cut ◽  
Intact Surface

AbstractFresh-cut lettuce is a very well-known salad for today's routines because it obliges minimal preparation to minimize the loss of health beneficial vitamins, minerals, antioxidants and other phytochemicals. It is a prodigious challenge to serve its consumers fresh. Quality of freshly processed lettuce under high CO2 modified atmosphere packaging (MAP) has been investigated as a realistic alternative technique for its preservation. Storage under high CO2 atmospheric treatments exhibited a significant impact in microbial development, electrolyte leakage, volatile metabolites and sensory quality of fresh-cut iceberg lettuce. This storage condition (MAP 1: 5 kPa O2 and 20 kPa CO2 balanced by N2 at 7 °C for 6 days) inhibited the growth of mesophilic bacteria and yeasts; delayed the enzymatic browning (cut-edges and intact surface) of fresh-cut iceberg lettuce and overall visual quality was also in acceptance limit. The development of off-odors was perceived in high CO2 MAP as a consequence of volatiles (ethanol and acetaldehyde) accumulation which was persisted at an inexcusable level during 6 days of storage periods.

FRESH-CUT CARROT COATED WITH STARCH/MONTMORILLONITE FILMS AND SUBJECTED TO MODIFIED ATMOSPHERE PACKAGING

2015 ◽  
pp. 559-566
Author(s):  
I.C. Guimarães ◽  
E.G.T. Menezes ◽  
P.R.S. Borges ◽  
R. Leal ◽  
K.C. Reis ◽  
...  
Keyword(s):  
Modified Atmosphere Packaging ◽  
Modified Atmosphere ◽  
Fresh Cut
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