Vol. 72 No: 6

Title:
Effect of Picking Time and Storage Conditions on ‘Cox's Orange Pippin’ Apple Texture in Relation to Cell Wall Changes

Authors:
K. TU, K. WALDRON, L. INGHAM, T. DE BARSY and J. DE BAERDEMAEKER

pp: 971-980

Abstract:
Apples of cv. Cox's Orange Pippin were harvested on two dates according to the criteria when the apples were best for long-term storage (early picked) and best for consumption (late picked). Fresh apple texture was measured. The apples were stored under 0°C and CA conditions respectively. At defined time intervals, the physical properties of the apples were measured destructively and non-destructively. The apple tissue structural changes were investigated at cell wall and middle lamella level with light microscopy. The experimental results showed that the early picked apples maintained higher firmness during the 0°C and CA storage. The CA stored apples showed better quality compared with 0°C stored apples. Later picked ‘Cox’ apples tend to lose their firmness faster during the postharvest storage. More cell wall breakage was observed from the early picked apples indicating a less mealy texture than the late picked apples. Sweetness was increased during storage and the late picked apples showed higher SSC value. Apple firmness related to the extractable juice content and cell wall breakage.

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