Effects of irradiation on respiration and ethylene production of apple slices

✍ Scribed by Gurbuz Gunes; Christopher B Watkins; Joseph H Hotchkiss

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 198 KB
• Volume: 80
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/1097-0010(200006)80:8<1169::aid-jsfa614>3.0.co;2-p

✦ Synopsis

Respiration and ethylene production rates of irradiated apple slices from four apple cultivars were measured for 72 h. Doses less than 1.2 kGy had no effect on rates of CO 2 production and O 2 consumption, and irradiation at doses between 1.2 and 2.4 kGy had minimal effect for all cultivars. Respiratory response of Idared', Law Rome' and Empire' slices to irradiation was curvilinear, with maximum respiration occurring in the 3±6 kGy dose range. Response of Delicious' slices was linear over the irradiation dose range (0±11 kGy) studied. Respiratory quotient increased with irradiation dose. The degree of maturity of the slices affected respiratory responses. Irradiation reduced ethylene production of all slices. These results suggest that irradiation doses of up to 2.4 kGy can be used with minimum effect on the respiratory physiology of tissues.