Main Organic Acid Distribution of Authentic Citrus Juices in Turkey

Authors : Feryal KARADENİZ*

Pages : 267-271

View : 13 | Download : 8

Publication Date : 2004-08-01

Article Type : Research Paper

Abstract :Nineteen authentic citrus juice samples insert ignore into journalissuearticles values(6 tangerine, 4 sweet orange, 4 grapefruit, 4 lemon and 1 sour orange); were investigated with respect to organic acid distribution. Average citric, malic and fumaric acid contents of tangerine juices were 9.22 g l-1, 5.29 g l-1 and 368 µg l-1, respectively. These values for orange juices were 13.28 g l-1, 7.79 g l-1 and 373 µg l-1, respectively. The citric acid concentration in lemon juices, having the highest acidity, varied between 48.54 and 60.32 g l-1. It was followed by grapefruit juices with an average 19.61 g l-1 citric acid content. In all citrus juices, the most abundant organic acid was citric acid, ranging from 6.05 to 60.32 g l-1, with the exception of one tangerine variety. Malic acid was the second most abundant acid insert ignore into journalissuearticles values(1.27-12.15 g l-1);, followed by fumaric acid insert ignore into journalissuearticles values(0-807 µg l-1);. Grapefruit, lemon and sour orange juices did not contain fumaric acid.
Keywords : organic acid, orange, grapefruit, lemon, tangerine