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Progress in Essential Oils

By: Brian M. Lawrence
Posted: December 17, 2008, from the January 2009 issue of P&F magazine.

Using either a combined dialysis/pervaporation system or a combined ultrafiltration/reverse osmosis/dialysis system, Auerbach (1995) compared the composition of a folded orange oil with one prepared by vacuum distillation. The results of this comparative study are presented in T-1.

Huang and Wu (1998) used a combination of analytical techniques to examine the composition of cold-pressed orange oil produced from five cultivars (‘Hamlin,’ ‘Jincheng,’ ‘Taoycheng,’ ‘Galliangcheng’ and ‘Washington’) grown in China. The results of this study are shown in T-2. It is of interest to note that ‘Galliangcheng’ cultivar was richest in carbonyl compounds, so it probably had the most intense orange aroma.

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