Comparison of antioxidative and synergistic effects of rosemary extract with alpha-tocopherol, ascorbyl palmitate and citric acid in sunflower oil

Authors
Hras, AR Hadolin, M Knez, Z Bauman, D
Citation
Ar. Hras et al., Comparison of antioxidative and synergistic effects of rosemary extract with alpha-tocopherol, ascorbyl palmitate and citric acid in sunflower oil, FOOD CHEM, 71(2), 2000, pp. 229-233
Citations number
27
Categorie Soggetti
Food Science/Nutrition
Journal title
FOOD CHEMISTRY
ISSN journal
03088146 → ACNP
Volume
71
Issue
2
Year of publication
2000
Pages
229 - 233
Database
ISI
SICI code
0308-8146(20001101)71:2<229:COAASE>2.0.ZU;2-4
Abstract
The antioxidative activities of four natural antioxidants: rosemary extract (ROS.CON), alpha-tocopherol (TOC), ascorbyl palmitate (AP) and citric acid (CA) were studied in sunflower oil stored at 60 degrees C. Among them, ros emary extract (ROS.CON) exhibited the best antioxidative activity, as deter mined by peroxide and anisidine value measurements. alpha-Tocopherol showed a prooxidative effect on stability of sunflower oil at tested conditions. The synergistic effects of alpha-tocopherol (TOC), ascorbyl palmitate (AP) and citric acid (CA) on rosemary extract (ROS.CON) were investigated. When combined with citric acid and especially ascorbyl palmitate, the rosemary e xtract showed an additive antioxidative effect, while by mixture with alpha -tocopherol a negative synergism was observed. (C) 2000 Elsevier Science Lt d. All rights reserved.