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Anaerobic metabolism of strawberries under elevated CO2 and reduced O2 atmospheres.

Ke, D.; El-Sheikh, T.; Mateos, M.; Kader, A. A.;

Acta Horticulturae Year: 1993 Issue: No. 343 Pages: 93-99 Ref: 12 ref.

1993

บทคัดย่อ

Anaerobic metabolism of strawberries under elevated CO2 and reduced O2 atmospheres.

Changes in anaerobic products and enzymes were studied in Selva strawberries kept in air, 20% CO2 + 80% air, 50% CO2 + 50% air and 0.25% O2 + 99.75% N2 at 5 deg C for 1-9 days. Storage in 20% CO2 slightly increased acetaldehyde, ethanol and ethyl acetate concentrations. Storage in 50% CO2 or 0.25% O2 resulted in greater accumulation of the above anaerobic volatiles which was associated with a reduction in fruit flavour. Pyruvate decarboxylase (PDC) and alcohol dehydrogenase (ADH) activities were slightly increased by the elevated CO2 and reduced O2 atmospheres in the first 5 days. The 0.25% O2 atmosphere caused a much greater increase in ADH activity after 7 and 9 days. Causes of alcoholic fermentation induction in strawberries are discussed.