Supercritical Fluid Extraction

Sánchez‐Camargo, Andrea del Pilar; Mendiola, J. A.; Ibáñez, Elena; Herrero, Miguel

doi:10.1016/b978-0-12-409547-2.10753-x

Cited by 18 publications

(18 citation statements)

References 124 publications

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“…We ensured careful post-harvest handling and drying conditions of the tuberose flowers to avoid compound degradation, also the particle size used for extraction was controlled to improve the mass transfer. These factors were reported as important factors for jasmine and lavender extraction [19,22]. However, these factors were not evaluated in this work, because the aim of the research was to study how the main parameters that affect carbon dioxide solubility in the supercritical fluid process impacts the chemical composition profile of Polianthes tuberosa extracts.…”

Section: Supercritical Fluid Extractionmentioning

confidence: 99%

“…Moreover, the quality of supercritical extracts has been compared to enfleurage [2], and because of its benefits, SFE also has been used for recovery of volatile compounds from different flowers, such as lavender, jasmine, and geranium [17][18][19]. SFE also has been used for extraction of tuberose flowers; studies report low yield extracts, and few chemical compounds have been identified in extracts [2,4,20].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Supercritical Fluid Extraction Process on Chemical Composition of Polianthes tuberosa Flower Extracts

et al. 2019

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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.

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Section: Supercritical Fluid Extractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Supercritical Fluid Extraction Process on Chemical Composition of Polianthes tuberosa Flower Extracts

et al. 2019

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“…In addition, there is a search for techniques considered unconventional that use lower amounts of solvents, causing less environmental impact and still presenting good yields. Thus, supercritical extraction process is the most appropriate technology to obtain extracts with low residual solvent content and low final toxic potential [18], being a great alternative as presented in previously studies [19,20]. Considering that the extracts of A. lappa leaves obtained from the mixture of supercritical carbon dioxide (scCO 2 ) as solvent with ethanol as cosolvent showed higher efficiency, the best conditions of overall extraction yield were obtained at 313.15K and both pressures 15 and 25 MPa, and due to the great antioxidant effect that has already presented [19], these same extracts were chosen to evaluate complement modulation.…”

Section: Introductionmentioning

confidence: 99%

Supercritical Extracts from Arctium lappa as a Potential Inhibitor for the Activation of Complement System

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et al. 2019

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Arctium lappa is a perennial species of the Asteraceae family originally from Europe and Asia. Considered a weed species in the southern region of Brazil, it is popularly used as a natural anti-inflammatory. The complement system is an important component of the innate immune response. However, its exacerbated activation can lead to harmful conditions like autoimmune and inflammatory disorders. Plants that inhibit the activation of complement can be a promising tool in the treatment of inflammatory diseases. Here, we evaluated the effect of A. lappa leaves extracts on the activation of the classical and alternative pathways of complement system. Two extracts were obtained under supercritical conditions using scCO2 with ethanol as cosolvent, at 313.15K, 15 MPa (E1) and 25 MPa (E2). Classical and alternative activation were evaluated using complement fixation test. Different concentrations of A. lappa extracts E1 and E2 showed an inhibitory effect on both complement pathways, and heparin was used as control. The IC50 of E1, E2, and heparin were 28.26, 20.12 and 92.54 µg/mL for classical and 26.12, 27.70, 27.78 µg/mL for the alternative pathway. Results demonstrate that A. lappa is a promising complementary treatment for diseases associated with complement activation.

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“…Therefore, during the supercritical stage, the fluids present the peculiarities of a gas but also of a liquid [23][24][25]. This permits increased solubility and improves the extraction of compounds such as polyphenols, fatty acids, and alkaloids, among others that have previously been studied [21,23,25,26]. The supercritical extraction process involves a large number of operating variables that have an effect on the extraction yield of the compound of interest in a solid matrix.…”

Section: Introductionmentioning

confidence: 99%

Supercritical Fluid Extraction of Fat and Caffeine with Theobromine Retention in the Cocoa Shell

et al. 2019

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The cocoa shell is a residue of low commercial value, which represents an alternative for obtaining substances of added value for the food and pharmaceutical industry. Substances of interest in the shell include fat and methylxanthines (theobromine and caffeine). In order to obtain the extraction behavior with supercritical CO2, a 23 factorial design was proposed with six central points, taking dynamic extraction into consideration. The following factors were involved: pressure (2,000–6,000 psi), temperature (313–333 K), and time (30–90 min). The obtained yield was between 3.66% and 15.30%. Fat was the substance that was extracted most effectively (94.73%). Caffeine demonstrated variability in the residue, with at least six treatments that exceeded a removal rate of more than 90%, while it was practically impossible to extract theobromine. The difference with regard to the extraction of theobromine may be attributed to its low solubility. Characterization using FT–IR showed the modifications before and after the process, providing clear evidence of the changes corresponding to the fat at 2,924, 2,854 and 1,745 cm−1. The results presented establish the basis for the extraction of substances such as fats and methylxanthines from a cocoa shell with the use of CO2.

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Supercritical Fluid Extraction

Cited by 18 publications

References 124 publications

Effect of Supercritical Fluid Extraction Process on Chemical Composition of Polianthes tuberosa Flower Extracts

Effect of Supercritical Fluid Extraction Process on Chemical Composition of Polianthes tuberosa Flower Extracts

Supercritical Extracts from Arctium lappa as a Potential Inhibitor for the Activation of Complement System

Supercritical Fluid Extraction of Fat and Caffeine with Theobromine Retention in the Cocoa Shell

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