Chilling, injury

Mazur, P., Schneider, U., Mahowald, A.P. (1992a). Characteristics and kinetics of subzero chilling injury in Drosophila embryos. Cryobiol. 29. 39-68. 

Some horticultural crops such as sweet potatoes, bananas, and pineapples can suffer from chilling injury at low temperatures (Lee and Kader 2000). Chilling injury causes accelerated losses in ascorbic acid content of chilling-sensitive crops. Destruction of ascorbic acid can occur before development of any visible symptoms of chilling injury (Lee and Kader 2000). 

Gonzalez-Aguilar GA, Buta JG and Wang CY. 2001. Methyl jasmonate reduces chilling injury symptoms and enhances colour development of Kent mangoes. J Sci Food Agric 81 (13) 1244—1249. 

Courgette/ Zucchini Chill injury 4.7 T1 and T2 weighted se imaging 93... 

Squash such as courgette (zucchini) and cucumber is a chill-sensitive commodity. Exposure to chilling temperatures causes loss of membrane integrity and water redistribution from the cell to the intercellular space. Visible injury symptoms such as surface pitting and dark watery patches eventually develop. Early detection of chill injury is important in order to ascertain the necessity and correct timing of treatments such as heat shock, that can reverse the condition. However, delaying treatment to the point where visible symptoms appear is too late for reversal. 

Chilling injury in courgette/zucchini has been studied by After just... 

More recently Naruke and co-workers have studied chilling injury in cucumber with very similar results. Cucumbers were stored either at 15°C or at 2°C for 9 days. Visible pitting appeared after 5 days storage in the chilled samples, but Ti measured at 0.58 T (25 MHz) showed an abrupt increase after just 3 days storage. 

DING, C. K., WANG, C. Y GROSS, K. C., SMITH, D. L Jasmonate and salicylate induce the expression of pathogenesis- related-protein genes and increase resistance to chilling injury in tomato fruit., Planta., 2002,214, 895-901. 

The rehydration temperature must also be considered. Generally, rehydration is carried out with the addition of distilled water at room temperature. In some cases it may be carried out at low temperatures to reduce the deleterious chemical and/or enzymatic reactions that will inevitably be introduced to the specimens following rehydration. Although this procedure cannot be used in specimens that are sensitive to chilling injury, it is recommended that rehydrated specimens be held at ice-cold temperature until the next treatment can be started. 

Tomatoes require full sun and deep soil with a pH between 6.0 and 6.8. Work in plenty of compost before planting to add organic matter. Tomatoes require moderate levels of nitrogen and phosphorus, and moderate to high levels of potassium and calcium. Tomatoes grow best between 75° and 90°E Temperatures over 100°F can kill blossoms, while temperatures below 50°F can cause chilling injury. 

Some vegetables are subject to chilling injury at refrigeration temperatures. This includes failure to ripen normally (mature-green tomatoes, immature bananas, and eggplants), susceptibility to decay (sweet potatoes), undesirable increases in sugars (potatoes), as well as an... 

Potential Defects Chilling Injuries, Potential Greening Area... 

Imaging has also been applied to the study of chilling injury in persimmon fruit,312 to the study of growth and ripening of kiwi fruit,313 and to the detection of pitted olives, while a conveyer belt transports the fruits through a low-field NMR magnet.314... 

Demethylation of pectin has been the most obvious change observed in cell wall structure, both in the chilling injury of fresh cucumbers ( 7, 29) and during fermentation ( ). Bell et al. (30) showed that cucumber plants contain pectinesterase in all parts of the plant, including the fruit. As part of a series of studies of chilling injury in cucumber fruits, Fukushima and Yamazaki (29) found that a decrease in hot, water-soluble, high... 

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