EFFECT OF ROSEMARY EXTRACT ON THERMAL STABILITY OF SUNFLOWER OIL
Abstract
The purpose of this study was to evaluate the effect of rosemary extract (Rosemarinus officinalis L.) on thermal stability of sunflower oil. Samples of sunflower oil and sunflower oil containing 0.1% rosemary extract were subjected to three successive cycles of thermal heating at burning point for 8 hours, followed by cooling at room temperaturefor16 hours. After each cycle, samples of oils were taken for analysis ofdensity, viscosity and FTIR spectroscopy measurements. Analyzed parameters were used as indicators of structural changes in analyzed samples of oils. According obtained results the addition of rosemary extract in sunflower oil effectively protect its triglyceride structure and level of unsaturation during thermal heating and increase its thermal stability. Performed FTIR spectroscopy has indicated the role of rosemary extract as a natural protective agent. Samples of sunflower oil with rosemary extract have shown improved thermal stability compared with pure sunflower oil.
Full Text:
PDFRefbacks
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Food and Environment Safety by Stefan cel Mare University of Suceava is licensed under a Creative Commons Attribution 4.0 International License.
Online ISSN: 2559 - 6381
Print ISSN: 2068 - 6609