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Effect of gamma irradiation on storability of apples (Malus domestica L.)

Abstract

The effects of gamma irradiation on storability of two main apple varieties in Syria, Golden Delicious and Starking, were investigated. Fruits were irradiated with 0, 0.5, 1, and 1.5 kGy and combined irradiation with 1 kGy after packaging the fruits with polyethylene or paper bags. Irradiated and unirradiated fruits were stored at 1 to 2 C deg and 80 to 90% Rh. Weight loss and spoilage were evaluated throughout the different storage periods. Firmness, coloration and pH values were estimated immediately after irradiation. The results showed that in both varieties, gamma irradiation increased the weight loss after 45 days of storage in the 1995, but not in the 1996 season. After 180 days of storage gamma irradiation had different effects on weight loss depending on the season and variety, and increased the fungal spoilage. Application of gamma irradiation prevented the growth of Aspergillus niger and the formation of skin scald in Golden Delicious fruits. Immediately after treatment, gamma irradiation increased the softening of fruits, changed their colour from green to yellow and decreased the pH value of the juice. Combined treatments decreased the rate of weight loss and skin scald in Golden Delicious fruits and increased the fungal spoilage. (author)
Authors:
Al-Bachir, M [1] 
  1. Atomic Energy Commission (AECS), Dept. of Radiation Agriculture, Damascus (Syrian Arab Republic)
Publication Date:
Dec 01, 1997
Product Type:
Technical Report
Report Number:
AECS-A/FRSR-156
Reference Number:
EDB-00:108746
Resource Relation:
Other Information: 46 refs., 10 tabs; PBD: Dec 1997
Subject:
60 APPLIED LIFE SCIENCES; APPLES; COBALT 60; EXPERIMENTAL DATA; GAMMA RADIATION; IRRADIATION; RADIATION DOSES; RADIOPRESERVATION; STORAGE LIFE; SYRIA
OSTI ID:
20057158
Research Organizations:
Atomic Energy Commission (AECS), Dept. of Radiation Agriculture, Damascuus (Syrian Arab Republic)
Country of Origin:
Syrian Arab Republic
Language:
Arabic
Other Identifying Numbers:
TRN: SY0000735018243
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
39 pages
Announcement Date:
Dec 18, 2000

Citation Formats

Al-Bachir, M. Effect of gamma irradiation on storability of apples (Malus domestica L.). Syrian Arab Republic: N. p., 1997. Web.
Al-Bachir, M. Effect of gamma irradiation on storability of apples (Malus domestica L.). Syrian Arab Republic.
Al-Bachir, M. 1997. "Effect of gamma irradiation on storability of apples (Malus domestica L.)." Syrian Arab Republic.
@misc{etde_20057158,
title = {Effect of gamma irradiation on storability of apples (Malus domestica L.)}
author = {Al-Bachir, M}
abstractNote = {The effects of gamma irradiation on storability of two main apple varieties in Syria, Golden Delicious and Starking, were investigated. Fruits were irradiated with 0, 0.5, 1, and 1.5 kGy and combined irradiation with 1 kGy after packaging the fruits with polyethylene or paper bags. Irradiated and unirradiated fruits were stored at 1 to 2 C deg and 80 to 90% Rh. Weight loss and spoilage were evaluated throughout the different storage periods. Firmness, coloration and pH values were estimated immediately after irradiation. The results showed that in both varieties, gamma irradiation increased the weight loss after 45 days of storage in the 1995, but not in the 1996 season. After 180 days of storage gamma irradiation had different effects on weight loss depending on the season and variety, and increased the fungal spoilage. Application of gamma irradiation prevented the growth of Aspergillus niger and the formation of skin scald in Golden Delicious fruits. Immediately after treatment, gamma irradiation increased the softening of fruits, changed their colour from green to yellow and decreased the pH value of the juice. Combined treatments decreased the rate of weight loss and skin scald in Golden Delicious fruits and increased the fungal spoilage. (author)}
place = {Syrian Arab Republic}
year = {1997}
month = {Dec}
}