A STUDY OF PRESTORAGE HEAT TREATMENT EFFECT ON APPLE TEXTURE: DESTRUCTIVE AND NONDESTRUCTIVE MEASUREMENTS

Effects of prestorage heat treatment on the texture of three apple cultivars: 'Gloster,' 'Golden Delicious' and 'Jonagold' (Malus domestica Borkh.) were studied before and after heat treatments at different time-temperature combinations. Changes of apple firmness, extractable juice content, background color, soluble solids concentration (SSC) and pH values were determined after 4 months cold storage (2C, 95% RH). Prestorage heat treatment can inhibit 'Golden Delicious' softening during cold storage but less effective for 'Jonagold' apples. Severe internal browning was found for heat treated 'Gloster' apples after cold storage. Heat treatments had no benefit on apple juiciness maintenance. Heat treated apples showed more physiological disorders compared with the nontreated apples after 4 months cold storage. The effect of prestorage heat treatment seems to be cultivar dependent.

[1]  José M. García,et al.  Gray Mold in and Quality of Strawberry Fruit following Postharvest Heat Treatment , 1996 .

[2]  A. Nussinovitch,et al.  Compression characteristics, firmness, and texture perception of heat treated and unheated apples , 1996 .

[3]  J. Maindonald,et al.  Reducing External Chilling Injury in Stored 'Hass' Avocados with Dry Heat Treatments , 1995 .

[4]  Chang Yong Lee,et al.  EFFECT of HEAT TREATMENT ON FIRMNESS of APPLES and APPLE SLICES , 1994 .

[5]  S. Lurie,et al.  Time, Temperature, and Calcium Interact in Scald Reduction and Firmness Retention in Heated Apples , 1994 .

[6]  J. Abbott,et al.  ADDITIVE EFFECTS OF POSTHARVEST CALCIUM AND HEAT TREATMENT ON REDUCING DECAY AND MAINTAINING QUALITY IN APPLES , 1994 .

[7]  J. DeBaerdemaeker,et al.  Effect of Apple Shape on Acoustic Measurements of Firmness , 1993 .

[8]  Susan Lurie,et al.  A POSTHARVEST HEAT TREATMENT INHIBITS CELL WALL DEGRADATION IN APPLES DURING STORAGE , 1993 .

[9]  J. Abbott,et al.  Firmness and decay of apples following postharvest pressure infiltration of calcium and heat treatment , 1993 .

[10]  Chang Yong Lee,et al.  Apple cultivar variations in response to heat treatment and minimal processing , 1993 .

[11]  T. Mccollum,et al.  Heat Treatment Inhibits Mango Chilling Injury , 1993 .

[12]  Susan Lurie,et al.  Prestorage heat treatment as a means of improving poststorage quality of apples. , 1990 .

[13]  M. Saltveit,et al.  Physiological Response to Chilling Temperatures of Intermittently Warmed Cucumber Fruit , 1990 .

[14]  S. Lurie,et al.  Heat treatment of ripening apples: differential effects on physiology and biochemistry. , 1990 .

[15]  C. Lee,et al.  ANALYSIS OF JUICINESS OF COMMERCIAL FRANKFURTERS , 1984 .

[16]  N. Sommer,et al.  Control of Diseases of Fruits and Vegetables by Postharvest Treatment , 1967 .