The effects of change in concentration of carbon dioxide and oxygen on storage behaviour of Jonathan apples

1965 ◽  
Vol 5 (17) ◽  
pp. 161 ◽  
Author(s):  
EA Roberts ◽  
RBH Wills ◽  
KJ Scott
Keyword(s):  
Carbon Dioxide ◽  
Weight Loss ◽  
Titratable Acidity ◽  
Cent Oxygen ◽  
Low Oxygen ◽  
High Carbon ◽  
Ground Colour ◽  
Superficial Scald ◽  
Storage Atmosphere ◽  
High Carbon Dioxide

The behaviour of Jonathan apples in storage was studied in relation to the concentrations of carbon dioxide and oxygen in the storage atmosphere. A factorial design of 2, 4, and 6 per cent carbon dioxide and 1.2, 2.2, and 13.2 per cent oxygen was used and apples were removed from storage at 32�F after 20, 23, and 26 weeks. The concentrations of carbon dioxide and oxygen in the storage atmosphere were related quantitatively to weight loss, ground colour, firmness, titratable acidity, and to the incidence of superficial scald and breakdown. Rest retention of weight, acids, ground colour, and firmness, and least wastage from superficial scald were found in atmospheres with high carbon dioxide and low oxygen concentrations, but more of the fruit in these atmospheres had breakdown.

Some effects of the composition of the storage atmosphere on the behaviour of apples stored in polyethylene film bags

1964 ◽  
Vol 4 (14) ◽  
pp. 253 ◽  
Author(s):  
KJ Scott ◽  
EG Hall ◽  
EA Roberts ◽  
RB Wills
Keyword(s):  
Carbon Dioxide ◽  
Weight Loss ◽  
Low Temperature ◽  
Calcium Hydroxide ◽  
Calcium Chloride ◽  
Polyethylene Film ◽  
Ground Colour ◽  
Superficial Scald ◽  
High Maximum ◽  
Storage Atmosphere

Experiments were carried out during a period of five years with Jonathan, Delicious, and Granny Smith apples, stored at 32�F in polyethylene film bags. After storage for five to seven months best retention of ground colour, least weight loss, and least wastage from superficial scald and low-temperature breakdown were obtained in bags in which the levels of oxygen were low (minimum 3.6 per cent), or in those in which the levels of carbon dioxide were high (maximum 6.7 per cent). Low-temperature breakdown was decreased markedly when calcium chloride was placed inside the bags to reduce the humidity. The use of calcium hydroxide to absorb carbon dioxide did not reduce the disorder.

scholarly journals THE MORPHOLOGICAL CHANGES IN THE TISSUES OF THE RABBIT AS A RESULT OF REDUCED OXIDATION

1918 ◽  
Vol 27 (3) ◽  
pp. 399-412 ◽  
Author(s):  
H. G. Martin ◽  
A. S. Loevenhart ◽  
C. H. Bunting
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Content ◽  
Morphological Changes ◽  
Low Oxygen ◽  
High Carbon ◽  
Red Bone Marrow ◽  
Hydropic Degeneration ◽  
Thyroid Hyperplasia ◽  
High Carbon Dioxide ◽  
Stimulation Of

Exposure of rabbits to an atmosphere of low oxygen content results in a stimulation of the cardiorespiratory systems, in an extension (hyperplasia) of red bone marrow and probably of a thyroid hyperplasia, with the further production of hydropic and hyaline degeneration in the cells of the parenchymatous organs. An atmosphere of high carbon dioxide and normal oxygen content produces, however, a stimulation of the cardiorespiratory systems, but no marrow extension and, in the concentrations used, but slight hydropic degeneration in the parenchyma of the glandular organs.

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