บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Determination of optimum controlled atmosphere regimes for the control of physiological disorders of 'D'Anjou' pears after short-term, mid-term or long-term storage.

Chen, P. M.; Varga, D. M.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 16 Pages: 85-90 Ref: 8 ref.

1997

บทคัดย่อ

Determination of optimum controlled atmosphere regimes for the control of physiological disorders of 'D'Anjou' pears after short-term, mid-term or long-term storage.

Short-term (3-4 months) controlled atmosphere (CA) storage in 0.5% or 1.0% O2 (plus <0.1% CO2) at -1 deg C effectively controlled the development of superficial scald in 'd'Anjou' [Beurre d'Anjou] pears without inducing unacceptable incidences of black speck (BS) or pithy brown core (PBC) disorders. Fruits stored short-term in the above conditions remained free from scald after 8 weeks of holding in air at -1 deg . These fruits could be safely packed without antioxidant treatment and marketed for 2 months after short-term storage. Fruits stored in 0.5% O2 (plus <0.1% CO2) for mid-term (6 months) or long-term (8 months) duration were also free from scald but suffered high incidence of BS disorder. Fruits stored in 1.0% O2 (plus <0.1% CO2) for mid-term or long-term duration developed high incidences of scald as well as BS disorders. Fruits stored in CA regimes at 1.5% and 2.0% O2 (plus <0.1% CO2) developed very high incidences of scald with minor incidence of BS disorder regardless of the length o

f storage period. Therefore, none of the CA regimes with O2 between 0.5% and 2.0% were feasible for the control of physiological disorders in 'd'Anjou' pears destined for mid-term or long-term storage. The incidence of PBC disorder was negligible in all CA regimes since the concentration of CO2 in all storage conditions had been kept to less than 0.1%. The development of scald in CA-stored fruits was associated with the accumulation of conjugated trienes (the oxidative products of alpha -farnesene) in the peel tissue to greater than 1.5 nmoles/cm2 during 8 weeks of holding at -1 deg .