ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Pectin composition and turgor of strawberries stored in high CO2 atmosphere

J. Siriphanich

ISHS Acta Horticulturae787:319-324. 2008.

2008

บทคัดย่อ

Strawberries were subjected to air or 20% CO₂ balanced with air at 2.2°C for up to eight days. Firmness of strawberries increased under high CO₂ treatment by about 20%. Direct measurements of cell turgor with a pressure micro-probe revealed no difference in turgor between treatments. Cell wall analyses showed lower water soluble pectin and higher CDTA soluble pectin in CO₂ treated strawberries. Size distribution analysis revealed that under high CO₂ atmosphere the medium molecular size of pectin in the water soluble fraction decreased, while those in the CDTA soluble fraction increased. However, there were no differences in degrees of methyl-esterification in pectin fractions from both treatments. Calcium concentrations in the alcohol soluble solids from both treatments were no different as well.

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