Abstract
In present study, effect of conventional heating (CH) and microwave heating (MH) on Maillard reaction (MR) progression and structural, functional and antioxidant properties of glycated protein was investigated. The glycation process was carried out at 90°C, in bovine serum albumin–maltodextrin system. The extent of glycation was assessed by ortho-phthaldialdehyde and absorbance at 420nm. Afterwards, K-means clustering was applied to classify all treatments into three levels of glycation (low, medium, high). Subsequently, SDS-PAGE, structural (surface hydrophobicity and circular dichroism), functional and antioxidant (DPPH radical scavenging) properties were measured within chosen treatments. Results showed that MH was more effective on the reduction of free amino groups and increase in absorbance at 420nm more than CH (p<0.05). On the other hand, higher values in solubility, emulsion activity and foam capacity were obtained during MH heating which could be attributed to different structural changes of proteins under MH and CH.
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