Fac-simile Scheda Linee di Ricerca - Federalimentare

Dati pubblicati (pubblicazioni scientifiche, brevetti) inerenti il tema di ricerca:1. Andrich G., Nesti U., Zinnai A., Venturi F., Fiorentini R. (2005). Supercritical fluid extractionof bioactive lipids from the microalga Nannochloropsis sp. Eur. J. Lipid Sci. Technol.,107, 381-386.Marine microalgae are recognised a san important renewable source of bioactive lipids with a high proportion ofpolyunsaturated fatty acids (PUFA), which have been shown to be effective in preventing or treating several diseases.For the extraction of oil from microalgae, supercritical CO 2 (ScCO 2 ) is regarded with interest, being saferthan hexane and offering negligible environmental impact, a short extraction time and a high-quality final product.Whilst some experimental papers are available on the supercritical fluid extraction (SFE) of oil from microalgae,only limited information exists on the kinetics of the process. In such a contest, a mathematical model ableto describe the kinetics of the SFE was applied to the recovery with ScCO 2 of lipids from Nannoclhoropsis sp., amarine marine microalga commonly used in aquaculture and characterised by a lipid fraction with a high PUFAcontent. The aim of this paper was to examine the effect of operating conditions on the kinetics of the SFE, onprocess yields and on the fatty acid composition of lipid extracts.2. Andrich G., Zinnai A., Nesti U., Venturi F., Fiorentini R. (2006). Kinetics of supercriticalCO 2 extraction of bioactive oil from microalga Spirulina (Arthrospira) platensis. Acta alimentaria,35, 195-203.Microalgae are recognised as an important renewable source of bioactive lipids with a high proportion of polyunsaturedfatty acids, which have been shown to be effective in preventing or treating several diseases. For theextraction of oil from microalgae, supercritical CO 2 (ScCO 2 ) is regarded with interest being safer than hexaneand offering a negligible environmental impact, a shorter extraction time and a high quality final product. In sucha contest a mathematical model, able to describe the kinetics of a ScCO 2 extraction process, was applied to therecovery of oil from the cyanobacterium Spirulina (Arthrospira) platensis, characterised by a particularly highcontent in γ-linolenic acid. The kinetic model, which allows the optimisation of working parameters and the determinationof process yields, is reported together with the experimental protocol followed and the results obtained.SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento di Scienze e Tecnologie Agroalimentari, Università degli Studi della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it382