Effect of aqueous ethanol washing on functional properties of sunflower materials for meat analogue application. (July 2022)

• Record Type: Journal Article
• Authors: Jia, Wanqing; Sutanto, Ignatia Regina; Ndiaye, Mbalo; Keppler, Julia K.; van der Goot, Atze Jan
• Is Part Of: Food structure. Volume 33(2022)
• Publication Date: 2022-07
• Subjects: AI anisotropic index -- CCR closed cavity rheometer -- CGA chlorogenic acid -- DM dry matter content -- DSC Differential Scanning Calorimetry -- DSK de-oiled sunflower kernel -- DSKC1 de-oiled sunflower kernel concentrate of 1 washing step -- DSKC4 de-oiled sunflower kernel concentrate of 4 washing steps -- DSKC10 de-oiled sunflower kernel concentrate of 10 washing steps -- NSI nitrogen solubility index -- PCs phenolic compounds -- PSK pressed sunflower kernel -- PSKC1 pressed sunflower kernel concentrate of 1 washing step -- PSKC4 pressed sunflower kernel concentrate of 4 washing steps -- PSKC10 pressed sunflower kernel concentrate of 10 washing steps -- RPC rapeseed protein concentrate -- SDS-PAGE Sodium dodecyl sulfate polyacrylamide gel electrophoresis -- SEM Scanning electron micrographs -- SPC soy protein concentrate -- WHC water holding capacity -- WG wheat gluten -- YM Young's modulus; De-oiled sunflower kernel -- Pressed sunflower kernel -- Aqueous ethanol washing -- Functional properties -- Structuring properties; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; Food -- analysis -- Periodicals; Food -- Analysis; Periodicals; 664.07
• DOI: 10.1016/j.foostr.2022.100274
• Languages: English
• ISSNs: 2213-3291

Abstract

Abstract: Sunflower kernel is rich in protein and is considered an alternative plant protein source for meat analogue application. The effect of process conditions used to make ingredients from sunflower kernel needs to be investigated on the functional and structuring properties. Pre-pressing and de-oiling with 96% ethanol were applied to obtain de-oiled sunflower kernel (DSK). Pressed sunflower kernel (PSK) was obtained by more intensive pressing only. Their concentrates were obtained by aqueous ethanol washing to study the effect of oil and phenol removal. DSK and its concentrate formed a fibrous product at 40 wt% by shearing and heating at 140 ℃ in a shear cell. The washed DSK led to stronger products upon shearing and heating. However, PSK, before and after washing only formed a crumble gel under the same conditions. The differences for the water holding capacity, nitrogen solubility index, and rheological properties were remarkably small between DSK and PSK, and the washed concentrates. The remaining oil in the sunflower material is crucial for the structuring potential, while the phenol content does not seem to have a relevant influence. The primary de-oiling process turned out to be a determining factor for further oil removal with aqueous ethanol washing. Graphical Abstract: ga1 Highlights: The de-oiling process of sunflower material affects composition and functional properties of sunflower fractions. The de-oiled sunflower material forms fibrous structure in shear cell at 140 °C. Sunflower materials can have good functionality for meat analogs, while still containing phenols. The oil content in sunflower material determines its suitability for application in meat analog.