Occurrence and Preclusion of Terpene Chlorohydrins in Citrus Essential Oils |
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| Authors: | ER Weiss RJ Braddock RM Goodrich JF Gregory III J Pika |
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| Affiliation: | Authors Weiss, Braddock, and Goodrich are with the Univ. of Florida, Citrus Research and Education Center, 700 Experiment Station Rd., Lake Alfred, FL 33850. Author Gregory is with the Univ. of Florida, Food Science and Human Nutrition Dept., Gainesville, Fla. Author Pika is with Firmenich Inc., Plainsboro, N.J. Direct inquiries to author Braddock (E-mail: ). |
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| Abstract: | ABSTRACT: Screening commercial cold-pressed oils revealed the presence of terpene chlorohydrins, which may have quality and safety implications for end-users. Concentrations of (1R, 2R, 4R)-2-chloro-8- p -menthen-1-ol in some citrus essential oils ranged from less than 1 to 140 ppm. More than half of the oils tested contained less than 2 ppm of (1R, 2R, 4R)-2-chloro-8- p -menthen-1-ol. A pilot plant study used different concentrations of chlorinated water during the oil-recovery process. Cold-pressed oil, produced from a 30-ppm chlorine solution, contained (1R, 2R, 4R)-2-chloro-8- p -menthen-1-ol at detection threshold. The presence of (1R, 2R, 4R)-2-chloro-8- p -menthen-1-ol in citrus essential oils results from processing conditions and can be reduced through the reduction of chlorine levels in treatment water. |
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| Keywords: | Keywords citrus oil chlorohydrins chlorine terpenes |
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