Value-Added Potential of Expeller-Pressed Canola Oil Refining: Characterization of Sinapic Acid Derivatives and Tocopherols from Byproducts
| Autor: | Ayyappan Appukuttan Aachary, Yougui Chen, Usha Thiyam-Holländer, Véronique J. Barthet |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Vinyl Compounds
food.ingredient Chromatography Rapeseed Coumaric Acids Canolol DPPH Oil refinery Tocopherols General Chemistry Antioxidants Choline Fatty Acids Monounsaturated chemistry.chemical_compound food Phenols chemistry Sinapic acid Sinapine Food Technology Rapeseed Oil Tocopherol General Agricultural and Biological Sciences Canola |
| Zdroj: | Journal of Agricultural and Food Chemistry. 62:9800-9807 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/jf502428z |
| Popis: | Valuable phenolic antioxidants are lost during oil refining, but evaluation of their occurrence in refining byproducts is lacking. Rapeseed and canola oil are both rich sources of sinapic acid derivatives and tocopherols. The retention and loss of sinapic acid derivatives and tocopherols in commercially produced expeller-pressed canola oils subjected to various refining steps and the respective byproducts were investigated. Loss of canolol (3) and tocopherols were observed during bleaching (84.9%) and deodorization (37.6%), respectively. Sinapic acid (2) (42.9 μg/g), sinapine (1) (199 μg/g), and canolol (344 μg/g) were found in the refining byproducts, namely, soap stock, spent bleaching clay, and wash water, for the first time. Tocopherols (3.75 mg/g) and other nonidentified phenolic compounds (2.7 mg sinapic acid equivalent/g) were found in deodistillates, a byproduct of deodorization. DPPH radical scavenging confirmed the antioxidant potential of the byproducts. This study confirms the value-added potential of byproducts of refining as sources of endogenous phenolics. |
| Databáze: | OpenAIRE |
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