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University of Arizona (1978)

Yield and quality evaluation of fresh and thermally processed desert grown tomatoes

MohamedAhmed, ElBushra ElTayeb

Titre : Yield and quality evaluation of fresh and thermally processed desert grown tomatoes

Auteur : MohamedAhmed, ElBushra ElTayeb,

Université de soutenance : University of Arizona

Grade : Master of Science (MS) 1978

Résumé
Two processing tomato cultivars$ 8"VrF198’ and ’VP145- 21* and two fresh-market cultivars9 8Roza’ and ’Pakmor8 were evaluated for yield, fruit color, pH, total acidity, soluble solids, soluble solids to acid ratio and ascorbic acid con tent of both fresh and heat processed juice0 The object of the study was to investigate the suitability of these eulti- vars for different purposes under Arizona conditions0 Differences noted in the above characteristics studied were mainly attributed to cultivars and the rest to thermal processing,. After thermal processing total acidity increased, pH, soluble solids, soluble solids to acid ratio and ascorbic acid dropped. These changes were within acceptable ranges compared to similar Investigations0 The two processing cultivars, 8VP1988 and 8VF145-218 would be acceptable for processing in Arizona. 8Roza8 would be acceptable for both fresh-market and processing, but 8Pak- mor8 would not be acceptable for either outlet.

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