Publications by authors named "Jose A Coelho"
The volatiles from Coriandrum sativum L., Satureja montana L., Santolina chamaecyparissus L.
View Article and Find Full Text PDFSupercritical fluid extraction (SFE) of the volatile oil from Thymus vulgaris L. aerial flowering parts was performed under different conditions of pressure, temperature, mean particle size and CO(2) flow rate and the correspondent yield and composition were compared with those of the essential oil isolated by hydrodistillation (HD). Both the oils were analyzed by GC and GC-MS and 52 components were identified.
View Article and Find Full Text PDFBackground: Characterisation of the essential oils from O. glandulosum collected in three locations of Tunisia, chemical composition and the evaluation of their antioxidant activities were carried out.
Results: The essential oils from Origanum vulgare L.
Supercritical fluid extraction (SFE) of the volatile oil from Santolina chamaecyparissus L. flower heads was performed under different conditions of pressure, temperature, mean particle size and CO(2) flow rate. This oil was compared with the essential oil isolated by hydrodistillation (HD).
View Article and Find Full Text PDFArticle Synopsis
- Supercritical fluid extraction (SFE) of volatile oil from Satureja montana L. was tested under various conditions (pressure, temperature, particle size, CO2 flow rate) to determine their effects on oil yield and composition.
- The results showed that SFE generally provided a different composition compared to hydrodistillation (HD), particularly with higher amounts of thymoquinone in SFE, which is significant for its biological properties.
- Analysis of the plant's glandular trichomes through scanning electron microscopy (SEM) was also conducted to assess how the grinding process impacts them.