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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


LIMA, Maria S. A. de et al. Thermoanalysis of soybean oil extracted by two methods. Quím. Nova [online]. 2008, vol.31, n.3, pp.527-529. ISSN 0100-4042.

The thermal stability of vegetable oils is an important factor that affects their quality. In this study, we investigated the thermal stability of oil and lecithin extracted from soybeans by two distinct processes: mechanical extraction (pressing) and physical extraction (solvent). Thermal analysis was used to obtain information about different methodologies of extraction. The physically extracted products proved more stable than those extracted mechanically. Raman and UV-Vis techniques were applied to underpin the discussion of process differences.

Keywords : thermal analysis; vegetable oils; soybean oil.

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