DETERMINATION OF ENCAPSULATED SEA BUCKTHORN OIL OXIDATION USING FTIR-ATR SPECTROSCOPY

MONICA TRIF, MARION ANSORGE SCHUMACHER, CARMEN SOCACIU, H.A. DIEHL

Abstract


This work examines the oxidation process of Sea buckthorn oil encapsulated in ionotropically cross-linked alginate beads under oxidative conditions. The oxidation of oil was monitored by Fourier Transform Infrared Spectroscopy equipped with the universal ATR (FTIR-ATR) as an internal accessory. We considered as markers of oxidation processes in sea buckthorn oil. the following ratios between absorbances of some important bands: A2853/A3005-3007. A2853/A1744. A2853/A1159-1160. A1744/A3005-3007. A1377/A3005-3007. A1159-1160/A3005-3007. The values of all ratios indicated a first stage oxidation of encapsulated oil and a second or third stage oxidation of free oil. The encapsulated Sea bucktorn oil showed a good stability under oxidation conditions. Differential scanning calorimetric analysis was used to characterize the thermal behavior of free oil. the oil alginate beads and empty beads.

Keywords


Sea buckthorn oil; alginate beads; Fourier Transform Infrared Spectroscopy; oxidative stability; Differential Scanning Calorimetric

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DOI: http://dx.doi.org/10.15835/buasvmcn-asb:64:1-2:2188




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