Investigation of the effect of atmospheric plasma application on chia seed on the technological properties of mucilage obtained by different methods

In this study, after the application of atmospheric jet plasma to chia seeds for 3 different times (30 seconds, 1 minute and 2 minutes), gums were obtained from the seeds by 2 different methods called hot and cold extraction. After the plasma application, ash, moisture, crude protein, oil, fatty acid composition and total dietary fiber analyzes of the seed were performed and physicochemical differences were observed. Rheological analyzes were carried out with Small Amplitude Oscillatory Shear (SAOS) and Large Amplitude Oscillatory Shear (LAOS) analyzes on the mucilage gels obtained. In SAOS analyzes of mucilage gels produced by both hot and cold extraction, it was determined that the viscosity increased compared to the control samples and showed shear thinning flow behavior with increasing shear rate. In LAOS analyzes, on the other hand, it was determined that the linear viscoelastic region was longer in cold extraction mucilages, and the G' value for all samples was higher than the G'' value at low strain values (1.2%). As a result of LAOS analysis, it was concluded that the mucilage samples contain structural differences. In the SAOS analysis, the emulsifying ability, emulsion stability, water and oil holding capacities were determined in the sample that gave the best results in terms of viscosity. FTIR and SEM imaging analyzes were performed to investigate the effect of plasma on the mucilage samples.