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פותח על ידי קלירמאש פתרונות בע"מ -
Mechanism of Structural Freezing Injury in Citrus Fruit Segments
Year:
1986
Source of publication :
Botanical Gazette
Authors :
שומר, אילן
;
.
Volume :
147
Co-Authors:
Facilitators :
From page:
55
To page:
64
(
Total pages:
10
)
Abstract:

Peeled segments of grapefruit, Citrus paradisi Mcf. `Marsh seedless,' were sensitive to either macrostructural or ultrastructural freezing injury. Large crystals injured the ultrastructure of the juice sac tissue but preserved the integrity of the segment. In contrast, rapid cryogenic cooling prevented destruction of tissue, but the juice sac expanded, and the segments tended to fragment into separate juice sacs. Ice crystals split thick cell walls or were incorporated during their growth within protoplasmic structures and thin cell walls. After thawing, the destroyed protoplasmic matrix concentrated adjacent to the undamaged thick wall or were seen as dispersed fragments beside the thin ground walls. Protoplasmic membranes were completely destroyed, and organelles with various degrees of damage were identifiable after rapid cryogenic cooling and thawing. Tissue structures were not injured by rapid cryogenic cooling alone, and each type of membrane, organelle, oil droplet, and wall was characterized by typical surface topography.

Note:
Related Files :
Freezing injury
grapefruits
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
56040
Last updated date:
02/03/2022 17:27
Creation date:
23/08/2021 12:35
Scientific Publication
Mechanism of Structural Freezing Injury in Citrus Fruit Segments
147
Mechanism of Structural Freezing Injury in Citrus Fruit Segments

Peeled segments of grapefruit, Citrus paradisi Mcf. `Marsh seedless,' were sensitive to either macrostructural or ultrastructural freezing injury. Large crystals injured the ultrastructure of the juice sac tissue but preserved the integrity of the segment. In contrast, rapid cryogenic cooling prevented destruction of tissue, but the juice sac expanded, and the segments tended to fragment into separate juice sacs. Ice crystals split thick cell walls or were incorporated during their growth within protoplasmic structures and thin cell walls. After thawing, the destroyed protoplasmic matrix concentrated adjacent to the undamaged thick wall or were seen as dispersed fragments beside the thin ground walls. Protoplasmic membranes were completely destroyed, and organelles with various degrees of damage were identifiable after rapid cryogenic cooling and thawing. Tissue structures were not injured by rapid cryogenic cooling alone, and each type of membrane, organelle, oil droplet, and wall was characterized by typical surface topography.

Scientific Publication
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