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Structural Characterization, Technofunctional and Rheological Properties of Sesame Proteins Treated by High-Intensity Ultrasound    
Yazarlar
Prof. Dr. Osman GÜL
Kastamonu Üniversitesi, Türkiye
Furkan Türker Sarıcaoğlu
Bursa Teknik Üniversitesi, Türkiye
İlyas Atalar
Eskişehir Osmangazi Üniversitesi, Türkiye
Latife Betül Gül
Giresun Üniversitesi, Türkiye
Fatih Törnük
Yıldız Teknik Üniversitesi, Türkiye
Şenay Şimşek
Özet
Plant-derived proteins, such as those from sesame seeds, have the potential to be used as versatile food ingredients. End-use functionality can be further improved by high-intensity ultrasound treatments. The effects of high-intensity ultrasound on the properties of sesame protein isolates from cold-pressed sesame cake were evaluated. The SDS-PAGE demonstrated no significant changes in the molecular weight of proteins. Ultrasound treatments resulted in decreased particle size with a more uniform distribution, resulting in the exposure of hydrophobicity and free −SH groups and increased zeta potential. Although FTIR spectra of proteins were similar after ultrasonication, a partial increase in the intensity of the amide A band was observed. The ultrasound significantly (p < 0.05) affected the secondary structure of proteins. While optical micrographics revealed a dispersed structure with smaller particles after treatments, microstructural observations indicated more rough and irregular surfaces. Water solubility was improved to 80.73% in the sample subjected to 6 min of ultrasonication. Sesame protein solutions treated for 4 and 6 min exhibited viscoelastic structure (storage modulus (G′) > loss modulus (G′′)). In addition, the gelation temperature of proteins decreased to about 60–65 °C with increasing treatment time. Overall, ultrasound is a useful technique for the modification of sesame protein isolates.
Anahtar Kelimeler
high-intensity ultrasound | rheological properties | sesame protein | structural properties | technofunctional properties
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Foods
Dergi ISSN 2304-8158
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili Türkçe
Basım Tarihi 04-2023
Cilt No 12
Doi Numarası 10.3390/foods12091791
Makale Linki http://dx.doi.org/10.3390/foods12091791