Developing novel one-step processes for obtaining food-grade O/W emulsions from pressurized fluid extracts: processes description, state of the art and perspectives

Autor(es)

Santos, Diego Tresinari ; de Almeida Meireles, Maria Angela

• Tipo de documento: Artigo Científico
• Fonte: FOOD SCIENCE AND TECHNOLOGY; v. 35, n. 4, p. 9-pg., 2015-10-01.

Resumo

In this work, a novel on-line process for production of food-grade emulsions containing oily extracts, i.e. oil-in-water (O/W) emulsions, in only one step is presented. This process has been called ESFE, Emulsions from Supercritical Fluid Extraction. With this process, emulsions containing supercritical fluid extracts can be obtained directly from plant materials. The aim in the conception of this process is to propose a new rapid way to obtain emulsions from supercritical fluid extracts. Nowadays the conventional emulsion formulation method is a two-step procedure, i.e. first supercritical fluid extraction for obtaining an extract; secondly emulsion formulation using another device. Other variation of the process was tested and successfully validated originating a new acronymed process: EPFE (Emulsions from Pressurized Fluid Extractions). Both processes exploit the supercritical CO2-essential oils miscibility, in addition, EPFE process exploits the emulsification properties of saponin-rich pressurized aqueous plant extracts. The feasibility of this latter process was demonstrated using Pfaffia glomerata roots as source of saponin-rich extract, water as extracting solvent and clove essential oil, directly extracted using supercritical CO2, as a model dispersed phase. In addition, examples of pressurized fluid-based coupled processes applied for adding value to food bioactive compounds developed in the past five years are reviewed. (AU)

• Processo FAPESP: 10/16485-5 - Avaliação técnica e econômica da integração de processos sustentáveis visando um melhor aproveitamento do ginseng brasileiro (Pfaffia glomerata)
• Beneficiário: Diego Tresinari dos Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 09/17234-9 - Obtenção de antocianinas, carotenóides, flavonóides, óleos voláteis e tocotrienóis por tecnologia supercrítica: parâmetros de processo e caracterização química
• Beneficiário: Maria Angela de Almeida Meireles Petenate
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/19304-7 - Biorrefinaria do ginseng brasileiro: simulação e otimização multiobjetivo
• Beneficiário: Diego Tresinari dos Santos
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 12/10685-8 - Combinação/acoplamento de processos para a produção e encapsulamento de extratos vegetais de alto valor agregado: avaliação técnica e econômica
• Beneficiário: Maria Angela de Almeida Meireles Petenate
• Modalidade de apoio: Auxílio à Pesquisa - Regular