Acta Scientiarum Polonorum Technologia Alimentaria

Background. Cereal products have significant health benefits, and current research on them has focused on formulation processes and functionality. However, studies on the bioavailability and potential functional activities using digestive modeling combined with chemometrics have not been reported.
Materials and methods. The bioaccessibility of the composite cereal meal replacement (CCMR) was evaluated by establishing the in vitro digestive model, using field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), in combination with chemometric methods such as dual indicator sequence analysis (DISA) and Pearson correlation analysis; potential functionality assess­ments included in vitro hypoglycemic potential, glycemic index (eGI) value, and predicted duration of satiety in humans.
Results. The total digestibility of CCMR was 51.34 ±0.52%, with significant characteristics of variation in FESEM, FTIR and DISA before and after digestion; the total polyphenol content, total flavonoid content and antioxidant activity of CCMR were increased (p < 0.05) after digestion; the inhibition rate of α-amylase was 7.95 ±0.21%, α-glucosidase was 9.95 ±0.34%, eGI was 45.10 ±0.52, and the duration of satiety was 3.50 ±0.25 h.
Conclusion. CCMR can be used as a low GI food for weight loss, diabetic patients and special medical popu­lation, the paper can enrich and extend the methodology for evaluation of cereal products by using digestive modeling, FESEM, FTIR and chemometrics methods.