Natural antioxidants in emulsions O/W
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Soukaina El-Guendouz
Abstract
This study compared the capacity of propolis extract (PE) and thyme waste extract (TWE) to prevent the oxidation of oil in water (O/W) emulsion, as well as their impact on emulsion apparent viscosity (AV) in the presence of wheat germ and almond oils as lipid phase. For this, central composite design (CCD) and principal component analysis (PCA) were performed. Oxidation process was monitored by evaluating the formation of primary and secondary lipid oxidation products, at the same time the AV behavior was determined evaluating consistency index and flow behavior index. The results revealed that the increase of PE% and TWE% decreases TBARS (Thiobarbituric Acid Reactive Substances) and hydroperoxides formation. Viscosity increases with the rise of TWE% over (0.04%), whereas lower concentrations of PE% decreases it. Those results have been confirmed in the PCA analysis. TWE showed higher resistance to oxidation, although PE was more effective as antioxidant than TWE.
Funding source: Fundação para a Ciência e a Tecnologia
Acknowledgments
The authors wish to acknowledge the financial support provided by the Fundação para a Ciência e a Tecnologia—FCT; Portugal, under the projects the Project UIDB/05183/2020 and UID/MAR/00350/2013.
Conflicts of interest: The authors declare that they have no conflicts of interest.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
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Artikel in diesem Heft
- Frontmatter
- Historical Research Article
- A tutorial translation of the description of the historically first polymer drug conjugate and its in vivo evaluation
- Research Articles
- The expression and purification of LpxA of Chlamydia trachomatis and preparation of its polyclonal antibody
- Natural antioxidants in emulsions O/W
- Bioactivity-guided isolation of aurone derivatives with hepatoprotective activities from the fruits of Cucumis bisexualis
- Synthetic cell-permeable caveolin-1 scaffolding domain peptide activates phagocytosis of Escherichia coli by regulating Rab5 activity
- Mammalian exocrine secretions XIX. Chemical characterization of the interdigital secretion of the Black Wildebeest, Connochaetes gnou
- Synthesis, investigation of biological effects and in silico studies of new benzimidazole derivatives as aromatase inhibitors
- Review Article
- Coronaviruses widespread on nonliving surfaces: important questions and promising answers
- Rapid Communication
- Synthesis of sandwich type acyclic tetra-nuclear silver(I)-N-heterocyclic carbene complexes for wound healing applications
