Causal Factor of Peeling-off Disorder and Related Physiological Changes in 'Niitaka' Pear (Pyrus pyrifolia B.) During Cold Storage at Altered Temperature

초록

An environmental factor inducing peeling-off disorders and related metabolic changes were measured in cold-stored 'Niitaka' Asian pear fruit. When storage temperatures were alternated between 0 and 5 degrees C or 0 and 10 degrees C after 90 days of storage, high incidence of peeling-off disorder was developed ranging from 65 to 77%. Rates of respiration and C2H4 evolution were stimulated in response to temperature fluctuation. Electrolyte leakage also was increased by the temperature alternation. Sugars, especially sorbitol, and total phenol contents increased in the fruit skin suffering peeling-off, simultaneously, whereas organic acids tended to decrease. The results suggested that temperature fluctuation during cold storage might alter physiological metabolism which induces anatomical and/or physical changes in the skin tissues and eventually peeling-off development.

키워드