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Quality improvement of peaches by intermittent warming and modified-atmosphere packaging.

Fernandez-Trujillo, J. P.; Artes, F.;

Zeitschrift fur Lebensmittel-Untersuchung und -Forschung Year: 1997 Vol: 205 Issue: 1 Pages: 59-63 Ref: 25 ref.

1997

บทคัดย่อ

Quality improvement of peaches by intermittent warming and modified-atmosphere packaging.

Peaches (cv. Paraguayo) fruits, grown in Spain, were stored at the firm-breaker stage of maturity for 3 weeks at 0.5 deg C. The effects of 3 cycles of intermittent warming (IW) for 1 day to 20 deg every 6 days of storage, and modified-atmosphere packaging (MAP), on fruit quality were investigated. During storage, respiratory activity, ethylene emission, flesh firmness, titratable acidity (TA), total soluble solids content (TSS) and pH were monitored. IW and MAP induced different patterns of ethylene emission, flesh firmness, TSS and TSS:TA ratio. IW prolonged ethylene emission, which continued to be stimulated after the first and second warmings. Intermittently warmed fruits also had the best quality attributes at the end of storage. IW did not improve ripening sufficiently when applied in combination with MAP. Both IW and MAP prolonged shelf-life by about 1 week more than conventional cold storage. Fruits that were packaged in a modified atmosphere needed >3 days of subsequent ripening before t

he optimum level of eating quality was reached.