Effect of heat treatment on the structure, functional properties and composition of Moringa oleifera seed proteins

被引:30
作者
Bassogog, Christian Bernard Bakwo [1 ,2 ]
Nyobe, Carine Emilienne [1 ,2 ]
Ngui, Simon Pierre [2 ]
Minka, Samuel Rene [2 ]
Mune, Martin Alain Mune [3 ]
机构
[1] Food & Nutr Res Ctr, POB 6163, Yaounde, Cameroon
[2] Univ Yaounde I, Dept Biochem, POB 812, Yaounde, Cameroon
[3] Univ Maroua, Fac Sci, POB 814, Maroua, Cameroon
关键词
Moringa oleifera; Protein isolate; Protein composition; Secondary structure; Functional properties; SURFACE HYDROPHOBICITY; ISOLATE; FRACTIONS; PH;
D O I
10.1016/j.foodchem.2022.132546
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Knowledge on how food processing conditions and protein composition can modulate individual or food matrix protein functionality is crucial for designing new protein ingredients. In this regard, we investigated how heat treatment and protein composition influence physicochemical and functional properties of Moringa oleifera seed protein isolate. Results showed that changes in processing temperature induced modifications in the conformation affecting the hydrophobic core of proteins. Protein isolate was more soluble at room temperature whereas prolamin fraction presented high solubility at 70 & nbsp;C. Glutelin showed higher emulsifying properties at all temperatures. Protein composition also significantly affected physicochemical and functional properties of protein isolate. Increasing soluble glutelin enhanced solubility while increasing albumin, globulin and glutelin decreased hydrophobicity of the isolate. Likewise, increasing soluble globulin improved emulsifying capacity, and emulsion stability of the isolate was negatively affected by increase in albumin and glutelin. These findings could enhance application of Moringa oleifera protein in food formulations.
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页数:9
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