Abstract
Supercritical fluid extracts from flowers of Polianthes tuberosa var. double were ob tained using carbon dioxide as a solvent. Yield extract obtained was 2.5%. The effects of the pressure process (18 MPa, 28 MPa, and 38 MPa) and temperature process (313 K, 323 K, and 333 K) on the volatile composition of tuberose flowers extracts were evaluated, and a significant variation in chemical composition was found. Characteristic compounds of tuberose as methyl isoeugenol, benzyl benzoate, methyl anthranilate, pentacosene, and heptacosene were obtained mainly at 18 MPa and 333 K process conditions, and could be used in the perfume or fragrance industry. Components such as geraniol, farnesol, and methyl eugenol were also obtained, these extracts could be used in the development of cosmeceutical products. This work allowed to identification of the chemical composition profile and evaluation of the changes in tuberose extracts due to the extraction process.
Highlights
Tuberose (Polianthes tuberosa var. double) is a plant endemic to México and belonging to the Asparagaceae family
There is another extraction method used to obtain volatile compounds from flowers, known as enfleurage, heating is required, and compounds are degraded during the extraction process, besides which a distillation is needed for recovery of compounds from the fat used as a solvent, which requires long extraction times
The aim of this work was to study how the main parameters in the supercritical fluid process affect the chemical composition profile of Polianthes tuberosa flower extracts, and how these process parameters act, suggesting different potential applications of the extraction because of the different compositions obtained at different process conditions
Summary
Tuberose (Polianthes tuberosa var. double) is a plant endemic to México and belonging to the Asparagaceae family. Conventional extraction methods have been used to obtain tuberose extracts; these methods are mainly focused on the recovery of essential oil, achieving low yields of extracts and degrading compounds because of the high temperatures used during distillation or solvent extraction [2,5,6]. There is another extraction method used to obtain volatile compounds from flowers, known as enfleurage, heating is required, and compounds are degraded during the extraction process, besides which a distillation is needed for recovery of compounds from the fat used as a solvent, which requires long extraction times
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