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Zhi-hao Li,Shang Chu,Ping Wang,Sihai Gao,Shu-gang Li,Xiongwei Yu 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.9
This study examined the effects of differentdoses of irradiation treatments on protein structure anddigestion characteristic of seed-watermelon seed kernelprotein. The results showed that, the molecular structure ofseed-watermelon kernel protein was unfolded after theirradiation treatment, the content of b-sheet structure in thesecondary structure was decreased, while the content ofrandom coil structure increased. The average particle sizeof the protein increased, and the hydrophobic group buriedin the b-sheet structure was exposed hence the surfacehydrophobicity increased. Besides, the surface morphologyof seed-watermelon protein changed from smooth and flatto coarse and concave, the specific surface area in contactwith the aqueous medium increased and its solubilityincreased, the distribution of peptides in the digestabecame wider, and the small molecular weight peptidesgradually increased.