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  • Title: Sapucaia nut (Lecythis pisonis Cambess.) flour as a new industrial ingredient: Physicochemical, thermal, and functional properties.
    Author: Teixeira GL, Ávila S, Hornung PS, Barbi RCT, Ribani RH.
    Journal: Food Res Int; 2018 Jul; 109():572-582. PubMed ID: 29803485.
    Abstract:
    The aim of this work was to investigate the physicochemical, thermal, and functional properties of partially defatted sapucaia nut (Lecythis pisonis Cambess.) flours (PDSF) degreased by subcritical propane (20-60 °C; 20-100 bar) and supercritical CO2 + ethanol (1:1 w/w) as co-solvent (60 °C; 200 bar) in comparison to the PDSF obtained through Soxhlet extraction with petroleum ether. Under the conditions studied herein, compressed propane has a minor effect on the granules' morphology (average particle size between 22 and 32 μm) or in the physicochemical characteristics of the PDSF. It caused a minimum impact on the nutritional profile of the samples; unlike, the thermogravimetric analysis revealed that there is an influence on the thermal stability of the PDSF. Functional characteristics, such as emulsifying (8-20 m2/g), foam (6-12%), and high water (0.35-1.38 g/g flour) and oil (0.72-1.57 g/g flour) absorption capacity, were observed in PDSF. Defatted flours were found to be effective in the production of emulsions with structures that showed micrometric-sized droplets (up to 85% droplet size <15.0 μm) with alleged stability. PDSF is a source of proteins (31-49%) and carbohydrates (17-31%), thus it can be used as an ingredient to produce foodstuff in bakery and confectionery aiming to increase their nutritional value and functional properties.
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