Glycation of soy protein isolate with two ketoses: d-Allulose and fructose

Date

2021-01-01

Author

Taş, Ozan
Ertuğrul, Ülkü
Öztop, Halil Mecit

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© 2021 Institute of Food Science and TechnologyModification of food proteins to have improved functional properties is of great importance. In this study, modification of soy protein isolate (SPI) was achieved through glycation. SPI was glycated in a spray dryer (SD) and an incubator followed by freeze drying (FD). d-Allulose, an important rare sugar, was used in SPI glycation as the carbohydrate source, and results were compared with fructose. In addition to the sugar type, two different SPI powder: sugar ratios (1:1 and 5:1) were investigated. For the glycated samples, emulsification activity, free amino groups, protein solubility, Fourier-transform infrared spectroscopy analysis, antioxidant activity experiments and time-domain NMR relaxometry measurements for hydration were conducted. According to the results, the solubility of SPI that is limited in native form has shown a significant improvement after glycation through both FD and SD methods. Besides, glycation through the FD method was found to be more favourable due to its milder conditions than the SD method. Considering the physicochemical properties, the best combination for the highest glycation degree was found to be the samples prepared at the 1:1 ratio with d-Allulose in the FD method. Overall, it was concluded that glycation of SPI enhanced its functional properties such as antioxidant and emulsification activities.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85109342301&origin=inward
https://hdl.handle.net/11511/91370

Journal

International Journal of Food Science and Technology

DOI

https://doi.org/10.1111/ijfs.15218

Collections

Department of Food Engineering, Article

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Citation Formats

O. Taş, Ü. Ertuğrul, and H. M. Öztop, “Glycation of soy protein isolate with two ketoses: d-Allulose and fructose,” International Journal of Food Science and Technology, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85109342301&origin=inward.