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KMID : 0903619990400030355
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Journal of the Korean Society for Horticultural Science
1999 Volume.40 No. 3 p.355 ~ p.358
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Effect of Exposure to Elevated CO, Atmospheres on Fruit Discoloration during Cold Storage of Fuyu Persimmon
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Abstract
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In order to investigate the relationships between the softening of peach fruits and cell wall components, the cell wall materials of a fast softening cultivar, ´Mibaekdo´ and a slow softening cultivar, ´Yumyung´ were solubilized in distilled-water, 0.05M CDTA, 0.05M Na₂CO₃, 4% KOH, and 24% KOH sequentially during the fruit softening. The amounts of uronic acid, total sugar, and non-cellulosic neutral sugars from each fraction were measured. Uronic acid decreased in CDTA, Na₂CO₃, and 4% KOH soluble fractions of ´Mibaekdo´ peach fruit and in CDTA and 24% KOH soluble fractions of ´Yumyung´. Total sugar decreased in all fractions except 24% KOH soluble fraction of ´Mibaekdo´ and in CDTA and Na₂CO₃ soluble fractions of ´Yumyung´, while it increased in distilled-water fraction of ´Yumyung´. Arabinose, glucose, and galactose were the predominant non-cellulosic neutral sugars in the distilled-water, CDTA, and 4% KOH soluble fractions of both cultivars; arabinose, galactose, and rhamnose in the Na₂CO₃ soluble fraction; glucose and xylose in the 24% KOH soluble fraction. Arabinose and galactose decreased during softening in all fractions except 24% KOH soluble fraction of ´Mibaekdo´ and in CDTA, Na₂CO₃, and 24% KOH soluble fractions of ´Yumyung´.
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KEYWORD
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