EFFECTS OF COATING, MODIFIED ATMOSPHERE (MA) AND PLASTIC FILM ON THE PHYSICAL AND SENSORY PROPERTIES OF APRICOT

2010 ◽  
pp. 143-150 ◽  
Author(s):  
Z. Ayhan ◽  
O. Eştürk ◽  
F. Müftüoğlu
Keyword(s):  
Sensory Properties ◽  
Modified Atmosphere ◽  
Plastic Film

Changes in the colour and sensory properties of beef frozen after seven days of ageing in a modified atmosphere

2018 ◽  
Vol 14 (3) ◽  
pp. 47-59
Author(s):  
Katarzyna Śmiecińska ◽  
Dorota Kubiak ◽  
Tomasz Daszkiewicz ◽  
Paulina Osowiec
Keyword(s):  
Shear Force ◽  
Frozen Storage ◽  
Sensory Properties ◽  
Modified Atmosphere ◽  
Black And White ◽  
Before And After ◽  
Longissimus Lumborum ◽  
C 30 ◽  
Group B ◽  
Meat Samples

The aim of the study was to evaluate the colour, sensory properties and shear force values of meat from ten young bulls produced by crossing Polish Black-and-White Holstein-Friesian cows with Belgian White Blue bulls. The quality of the longissimus lumborum (LL) muscle was determined after seven-day ageing under various modified atmosphere (MA) conditions (vacuum – group B; 40% CO2 + 60% N2 – group C; 30% CO2 + 70% Ar – group D) followed by freezing and frozen storage. The process of seven- day ageing in MA composed of 40% CO2 + 60% N2 significantly increased the colour lightness of the beef samples. Eight-month frozen storage increased colour lightness in the meat samples aged in MA composed of 30% CO2 + 70% Ar. Meat samples aged under various MA conditions had a higher contribution of redness (a*) and yellowness (b*) than non-aged beef. Meat samples frozen after ageing in MA containing Ar had less redness than the samples from other groups. After frozen storage, meat samples from all groups had less redness and yellowness. Ageing and frozen storage had no significant effect on the juiciness of the beef. The beef aged in vacuum conditions was the most tender, both before and after frozen storage. Ageing had no significant influence on the shear force of meat samples evaluated before freezing. Meat samples aged in MA composed of 30% CO2 + 70% Ar evaluated after frozen storage had lower average shear force values than beef that had not been aged prior to freezing.

scholarly journals EFFECTS OF MODIFIED ATMOSPHERE STORAGE ON THE LONGEVITY OF PHALAENOPSIS

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 275B-275
Author(s):  
Peter J. Verpano ◽  
Alton J. Pertuit
Keyword(s):  
Half Life ◽  
Natural Light ◽  
Modified Atmosphere ◽  
Plastic Film ◽  
Air Bags ◽  
Life Values ◽  
Modified Atmosphere Storage ◽  
Atmosphere Storage

The packaging of flowering Phalaenopsis sp. plants in sealed plastic film offers advantages in protecting them from the hazards of retail distribution. Following treatments, two-year old plants, each with three to nine open florets, ware stored at 21°C for 76 days under natural light and natural day lengths. Plants were sealed individually in bags of air, bags of 15% O2, 22.5% CO2, 62.5% N2, and bags of 20% O2, 30% CO2, 50%2 N2. Control plants were left in open air and only they were watered twice weekly. Others were not watered. O2, CO2, and N2 levels in the sealed bags were monitored twice weekly using a syringe and a gas partitioner. Mean inflorescence life values were 40, 43, 43, and 38 days, respectively. The various atmospheres had no effect on floret life. Two distinct patterns of O2 and CO2 variation with time were observed, but inflorescence half-life values were not related to these patterns. Florets on plants in bags had a greater incidence of discoloration.

scholarly journals 350 Quality Changes of Spinach Stored in Controlled and Modified Atmospheres

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 503E-503 ◽  
Author(s):  
Ma. Teresa MartÌnez-Damian ◽  
Marita I. Cantwell
Keyword(s):  
Modified Atmosphere Packaging ◽  
Temperature Fluctuations ◽  
Visual Quality ◽  
Titratable Acidity ◽  
Leaf Damage ◽  
Modified Atmosphere ◽  
Plastic Film ◽  
Full Size ◽  
Controlled Atmospheres ◽  
Modified Atmospheres

Spinach is not packed commercially in modified-atmosphere packaging due to difficulties in maintaining beneficial conditions during distribution, where temperature fluctuations can occur. However, low O2 and high CO2 atmospheres can be useful to retard yellowing and deterioration. In two experiments we studied developing and full-size leaves stored at 7.5 °C in air and controlled atmospheres of 0.5% O2 + 10%CO2 and 5%O2 + 10% or 20% CO2. Subjective quality evaluations (visual quality, decay, discoloration, off-odors, and yellowing) and objective evaluations (L*a*b* color values, chlorophyll, pH and titratable acidity, ammonia, and ethanol and acetaldehyde) were conducted every 3 days during 15 days. The developing leaves had higher visual quality and lower off-odor scores during storage than did the full-size leaves. In air storage, leaves were below the limit of salability by day 12. The atmospheres containing 10% CO2 were similarly effective in maintaining the visual quality and greenness of the leaves, and reduced off-odors in developing but not full-size leaves. The 20% CO2 atmosphere resulted in some leaf damage. Ammonia concentrations increased during storage, with lowest and highest concentrations in leaves stored in air and 20% CO2, respectively. Tissue pH only slightly increased from 6.5 in air-stored samples, but increased notably during storage in the controlled atmospheres. At 2.5 and 7.5 °C, a plastic film providing a 5% O2 and 6% CO2 atmosphere resulted in better quality spinach than that obtained with either a 10% O2 and 3% CO2 package atmosphere or the commercial perforated polybag.

Sign in / Sign up

Export Citation Format

Share Document