บทคัดย่องานวิจัย

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Studies on cell wall mediated changes during storage of calcium-infiltrated apples.

Siddiqui, S.; Bangerth, F.;

Acta Horticulturae Year: 1993 Issue: No. 326 Pages: 105-113 Ref: 21 ref.

1993

บทคัดย่อ

Studies on cell wall mediated changes during storage of calcium-infiltrated apples.

Apples (cv. Golden Delicious) were vacuum infiltrated with 300 mM mannitol, with or without 50 or 150 mM CaCl2. The fruits were stored at 2-4 deg C for 100 days and sampled at intervals for flesh firmness. Samples were also examined using transmission electron microscopy and the flesh of the fruits was freeze-dried and used for cell wall analysis. Fruits infiltrated with 150 mM CaCl2 retained greater firmness during storage than control (non-infiltrated) fruits or fruits infiltrated with 50 mM Ca or mannitol. beta -D-Galactosidase activity was negatively correlated and pectin and hemicellulosic contents of walls were positively correlated with fruit firmness. Electron micrographs revealed that most of the changes appeared to involve the middle lamella. The probable mode of action of applied Ca in maintaining fruit firmness is discussed.