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Antioxidant Activity of Thyme Waste Extract in O/W Emulsions
- Source :
- Antioxidants, Vol 8, Iss 8, p 243 (2019), Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP, Antioxidants, Volume 8, Issue 8
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- Thymus vulgaris (thyme) is an aromatic plant and its essential oil has been applied as antimicrobial and antioxidant due to the presence of phenolic compounds. However, after steam distillation, the deodorized plant material is rejected, despite the possible presence of bioactive compounds. Ethanolic thyme waste extract revealed the presence of benzoic acid, 4-hydroxybenzoic acid, ferulic acid, caffeic acid, and sinapic acid. This waste thyme extract had the capacity for preventing the formation of primary and secondary lipid oxidation products in emulsions O/W (oil in water), constituted by diverse proportions of wheat and almond oils, without interfering with the viscosity parameters, for 10 weeks, at 37 &deg<br />C. The increasing proportion of almond oil (&ge<br />50%) in the emulsion increases its resistance to oxidation, which is improved with the presence of an optimal concentration of tested thyme waste extract (0.02% and 0.04%). The waste thyme extract can, therefore, be used as an antioxidant either in food or pharmaceutical emulsions O/W, replacing the synthetic antioxidants.
- Subjects :
- Antioxidant
Physiology
medicine.medical_treatment
Clinical Biochemistry
Thymus vulgaris
010501 environmental sciences
01 natural sciences
Biochemistry
oxidative stability
Article
law.invention
Ferulic acid
Steam distillation
response surface methodology
chemistry.chemical_compound
0404 agricultural biotechnology
Lipid oxidation
Response surface methodology
law
Recycling aromatic waste
almond oil
medicine
Caffeic acid
Food science
Molecular Biology
Essential oil
Oxidative stability
0105 earth and related environmental sciences
Benzoic acid
biology
Almond oil
recycling aromatic waste
wheaty germ oil
lcsh:RM1-950
food and beverages
04 agricultural and veterinary sciences
Cell Biology
biology.organism_classification
040401 food science
6. Clean water
3. Good health
lcsh:Therapeutics. Pharmacology
chemistry
Wheaty germ oil
Subjects
Details
- Language :
- English
- ISSN :
- 20763921
- Volume :
- 8
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Antioxidants
- Accession number :
- edsair.doi.dedup.....047806a5b69f2ef13f6e35365e402426