title: Novel simple process for tocopherols selective recovery from vegetable oils by adsorption and desorption with an anion-exchange resin.
abstract: A novel and simple low-temperature process was used to recover tocopherols from a deodorizer distillate, which is a by-product of edible oil refining. The process consists of three operations: the esterification of free fatty acids with a cation-exchange resin catalyst, the adsorption of tocopherols onto an anion-exchange resin, and tocopherol desorption from the resin. No degradation of tocopherols occurred during these processes. In the tocopherol-rich fraction, no impurities such as sterols or glycerides were present. These impurities are commonly found in the product of the conventional process. This novel process improves the overall recovery ratio and the mass fraction of the product (75.9% and 51.0wt%) compared with those in the conventional process (50% and 35wt%).
authors.affiliation: Department of Chemical Engineering, Tohoku University, Aoba-yama 6-6-07, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Kousuke
authors.initials: K
authors.lastname: Hiromori
authors.affiliation: Department of Chemical Engineering, Tohoku University, Aoba-yama 6-6-07, Aoba-ku, Sendai 980-8579, Japan. Electronic address: naomi@rpel.che.tohoku.ac.jp.
authors.forename: Naomi
authors.initials: N
authors.lastname: Shibasaki-Kitakawa
authors.affiliation: Department of Chemical Engineering, Tohoku University, Aoba-yama 6-6-07, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Nakashima
authors.affiliation: Department of Chemical Engineering, Tohoku University, Aoba-yama 6-6-07, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Toshikuni
authors.initials: T
authors.lastname: Yonemoto
mesh_terms: D000327:Adsorption; D000838:Anions; D010938:Plant Oils / Q000737:chemistry*; D024505:Tocopherols / Q000737:chemistry*
chemical_list: D000838:Anions; D010938:Plant Oils; D024505:Tocopherols
keywords: Adsorption/desorption; Ion-exchange resin; Selective recovery; Tocopherols; Vegetable oils