[feed] Atom [feed] RSS 1.0 [feed] RSS 2.0

Effect of heat treatment on the quality of onions during long-term tropical storage.

Thamizharasi, V. and Narasimham, P. (1993) Effect of heat treatment on the quality of onions during long-term tropical storage. International Journal of Food Science and Technology, 28 (4). 397-406, 20 ref..

[img] PDF
International Journal of Food Science and Technology (1993) 28, 397-406.pdf - Published Version
Restricted to Registered users only

Download (551kB)

Abstract

Onion bulbs (cv. Nasik red) were exposed to hot air currents prior to storage to curtail storage losses. Treatments at 80°C for 30min or 60°C for 1 h resulted in heat damage while temperatures of 60°C for 30min or 50°C for 3 h or 40°C for 48 h did not cause any heat damage to the bulbs. A Commercial lot treated at 47, 50 or 53°C for 3 h and another commercial lot treated at 47 or 50°C for 2-5 h, were stored for 4 or 5 months in ventilated polyethylene bags at (1) ambient conditions 20-30”C, RH 50-80’70, and (2) 21 k 1”C, RH 60-65%. In general the treated lots had more marketable bulbs, with less incidence of Aspergillus niger infection than untreated controls. Factorial experiments using temperatures 47, 50, and 53°C with durations of treatment between 2 and 5 h revealed that the temperature and duration of heat treatment had a significant effect on the yield of good bulbs and reduction in microbial spoilage during storage. Treatment at a temperature from 47 and 50°C for a duration between 2 and 4 h gave best results when stored at 21 2 1°C. The effect of treatment lasted up to 3 months in storage.

Item Type: Article
Uncontrolled Keywords: HEATING-; ONIONS-; PROCESSING-THERMAL; VEGETABLES-SPECIFIC
Subjects: 600 Technology > 08 Food technology > 10 Food Microorganisms
600 Technology > 08 Food technology > 23 Vegetables > 05 Onion
600 Technology > 08 Food technology > 06 Preservation and Storage
Divisions: Fruit and Vegetable Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 30 May 2016 06:57
Last Modified: 30 May 2016 06:57
URI: http://ir.cftri.com/id/eprint/6378

Actions (login required)

View Item View Item