Abstract
Peach fruit at five different physiological maturities were X-ray scanned at different ripening stages. X-raycomputed tomographic (CT) images of peaches at different maturity levels and ripening periods were compared. Theeffect of maturity and ripening on the X-ray absorption expressed in CT number and the physicochemical constituents ofpeach fruit were determined. Peaches were evaluated for values of CT number, density, moisture content, soluble solid,titratable acidity and pH. The CT number, density, moisture content, and titratable acidity decreased significantly withincreased degree of maturity. Soluble solid and pH increased with increased maturity grade. Similarly, the CT number,density, moisture content, and titratable acidity decreased significantly with postharvest ripening time. The soluble solidand pH increased significantly as ripening time was prolonged. X-ray CT scanning could prove useful in monitoring theinternal changes of peach fruit.
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