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Supercritical technology applied to the processing of essential oils, vegetable oils, pigments, stevia, starch, cellulose and other natural products


Brazil is large producer of condiments, aromatic herbs, roots and tropical fruits used by the food, the pharmaceutical, and the cosmetic industries. Some of these products are used locally, while others are exported. Among the exporting products can be mentioned black pepper, clove buds, ginger, etc. Essential oils and oleoresins of vetiver, eucalyptus, cinnamon, mint, and so on are exported. The country is also a large producer of stevia, a plant whose aqueous extract has being used for years as a sucrose substitute in special diets. Besides that, several other plants possess lipids, starch, and cellulose that can be potentially economically explored. Examples of these are turmeric, saffron, pupunha, bacuri, etc. The competition among countries for the market conquest is difficult, and the success of the commercilization bases on three factors: quality, availability and price. In an attempt to best assist to these requirements, studies are developed in different areas such as genetic improvement and agricultural techniques as well as on new processing technologies. Questions related to the use of techniques that avoid or minimize damages to the environment are been debated at the end of this century. Supercritical technology embodies processes that use as solvent of extraction gases at high pressures (carbon dioxide being the most important example), or pressurized fluids (water used in hydrolysis reactions) are known as clean processes. Products obtained using this technique are free of toxic residues and generally possess high quality when compared to products obtained by conventional techniques. The consumers' demands indicate that in near future products of better quality well be requested more and more. This tendency can be explored thoroughly by countries such as Brazil. But, to take advantage of its potential, the country needs to develop and/or to adapt technologies that are economically viable and ecologically correct. With the objective to contribute for the scientific and technological development of Brazil a group of scientist formed the Research Group 'SuperNat - Supercritical Technology Applied to the Processing of Natural Products, which includes several Brazillian research Institutions. Its objectives are the study of supercritical technology applied to the processing of natural products for the food, pharmaceutical, cosmetic, and fine chemistry industries... (AU)

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LEAL, PATRICIA F.; KFOURI, MARINA B.; ALEXANDRE, FABIO C.; FAGUNDES, FABIO H. R.; PRADO, JULIANA M.; TOYAMA, MARCOS H.; MEIRELES, M. ANGELA A.. Brazilian Ginseng extraction via LPSE and SFE: Global yields, extraction kinetics, chemical composition and antioxidant activity. JOURNAL OF SUPERCRITICAL FLUIDS, v. 54, n. 1, p. 38-45, . (04/09310-3, 99/01962-1)
CANELA‚ A.P.R.F.; ROSA‚ P.T.V.; MARQUES‚ M.O.M.; MEIRELES‚ M.A.A.. Supercritical fluid extraction of fatty acids and carotenoids from the microalgae Spirulina maxima. Industrial & Engineering Chemistry Research, v. 41, n. 12, p. 3012-3018, . (99/01962-1)
SÁNCHEZ, DENY; FOGLIO, MARY A.; ROSA, PAULO T. V.; ZETZL, CARSTEN; BRUNNER, GERD; MEIRELES, MARIA ANGELA DE ALMEIDA; QUISPE-CONDORI, SÓCRATES. Global yield isotherms and kinetic of artemisinin extraction from Artemisia annua L leaves using supercritical carbon dioxide. JOURNAL OF SUPERCRITICAL FLUIDS, v. 36, n. 1, p. 40-48, . (99/01962-1)
LILIA A.S. MORAES; ROSELAINE FACANALI; MARCIA ORTIZ M. MARQUES; CHAU MING LIN; M. ANGELA A. MEIRELES. Phytochemical characterization of essential oil from Ocimum selloi. Anais da Academia Brasileira de Ciências, v. 74, n. 1, p. 183-186, . (99/01962-1)
LEAL, PATRICIA F.; MAIA, NILSON B.; CARMELLO, QUIRINO A. C.; CATHARINO, RODRIGO R.; EBERLIN, MARCOS N.; MEIRELES, M. ANGELA A.. Sweet Basil (Ocimum basilicum) Extracts Obtained by Supercritical Fluid Extraction (SFE): Global Yields, Chemical Composition, Antioxidant Activity, and Estimation of the Cost of Manufacturing. Food and Bioprocess Technology, v. 1, n. 4, p. 326-338, . (02/12001-7, 04/09310-3, 99/01962-1)
QUISPE-CONDORI, SOCRATES; ROSA, V, PAULO T.; MEIRELES, M. ANGELA A.. Mathematical modelling of turmeric compounds extraction using high pressurized solvents mixture. JOURNAL OF SUPERCRITICAL FLUIDS, v. 140, p. 348-355, . (99/01962-1)

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Filed patent(s) as a result of this research project

PROCESSO DE EXTRAÇÃO E PURIFICAÇÃO DE ARTEMISININA A PARTIR DE MASSA SÓLIDA DE ARTEMISIA ANNUA UTILIZANDO DIÓXIDO DE CARBONO PI0903275-4 - Universidade Estadual de Campinas (UNICAMP) . Paulo de Tarso Vieira e Rosa ; Maria Angela de Almeida Meireles - April 2009, 02