Changes in α-, β-, γ- And δ-tocopherol contents of mostly consumed vegetable oils during refining process
No Thumbnail Available
Date
2014
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
In this study, the effect of different steps in both chemical and physical refining process on tocopherol contents of several vegetable oils (sunflower oil, corn oil, rapeseed oil, soybean oil, olive oil and refined-bleached- deodorized (RBD) palm oil) was investigated. The most commonly tocopherols found in vegetable oils were α- and γ-tocopherols. Soybean contains 1328 mg/kg tocopherol, which is highest among plant oils. Total tocopherol contents gradually decreased until the end of the refining processes in all oil types. The content of α-, β-, γ- and δ-tocopherols also decreased during refining. These significant losses occurred especially after the deodorizing stage. © 2013 © 2013 Taylor & Francis.