บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Characterization of Mg2+-induced bitter pit-like symptoms on apples: a model system to study bitter pit initiation and development.

Burmeister, D. M.; Dilley, D. R.;

Journal of Agricultural and Food Chemistry Year: 1993 Vol: 41 Issue: 8 Pages: 1203-1207 Ref: 49 ref.

1993

บทคัดย่อ

Characterization of Mg2+-induced bitter pit-like symptoms on apples: a model system to study bitter pit initiation and development.

Golden Delicious apple fruits were vacuum-infiltrated with various concentrations of Ca2+ and Mg2+, with or without Ca2+-affecting reagents or other cations, before being stored for 10 days in air at 20 deg C. Including trifluoperazine with Mg2+ increased Mg2+-induced pitting (MgIP) over that with Mg2+ alone. Verapamil and nefedipine had no effect on MgIP or its attenuation by Ca2+. Cyclopiazonic acid, ethylene glycol bis-( beta -aminoethyl ether)-N,N,N',N'-tetraacetic acid and 2,3,5-triiodobenzoic acid attenuated MgIP. Cycloheximide and actinomycin D [dactinomycin] inhibited MgIP, while puromycin had no effect. Heating fruits at 38 deg C prior to MgCl2-infiltration attenuated MgIP. Cations Ba2+, La3+, Co2+ and Sr2+ included at 20.0 mM prevented MgIP (induced by 0.18 M Mg2+). Ca2+ (3.0 mM) included with 0.18 M Mg2+ inhibited MgIP by 50%. K+ and Na+ partially inhibited MgIP. It was concluded that treatments affecting calcium homeostasis or cellular metabolism can alter MgIP development and that M

gIP may be a useful tool to understanding natural bitter pit development.