title: Exploitation of hazelnut, maize germ and sesame seed aqueous extraction residues in the stabilisation of sesame seed paste (tahini).
abstract: BACKGROUND
  Sesame seed paste is a highly nutritious food product which, upon long-term storage, tends to exhibit undesirable phenomena of oiling-off and particle sedimentation. The ability of rich-in-fibre aqueous extraction powders originating from oleaginous raw materials to enhance the physical stability of sesame paste is investigated in this study.
  
  
  RESULTS
  The extraction residues remaining after treating hazelnut, sesame seed or maize germ with aqueous media in order to extract and exploit their oil bodies, were collected, dehydrated and milled into fine powders. The powders were then incorporated at various levels into a commercially available sesame paste product to assess their potential as paste stabilisers against oil separation. The solids from maize germ exhibited the highest stabilising ability followed by the solids from hazelnut. In contrast, the solids originating from the sesame seed were less effective in stabilising the sesame paste. Shear stress-rate of shear measurements of sesame paste incorporating the extraction residue solids were conducted in an attempt to explain the different stabilising behaviour of the three powders.
  
  
  CONCLUSIONS
  The intensity of interactions between the incorporated solids within the sesame paste structure may determine the rheological properties of the blend and hence its stability against oiling-off upon long-term storage. © 2016 Society of Chemical Industry.
authors.affiliation: Laboratory of Food Chemistry and Technology, Department of Chemistry, Aristotle University, Thessaloniki, 54124, Greece.
authors.forename: Anthi
authors.initials: A
authors.lastname: Evlogimenou
authors.affiliation: Laboratory of Food Chemistry and Technology, Department of Chemistry, Aristotle University, Thessaloniki, 54124, Greece.
authors.forename: Adamantini
authors.initials: A
authors.lastname: Paraskevopoulou
authors.affiliation: Laboratory of Food Chemistry and Technology, Department of Chemistry, Aristotle University, Thessaloniki, 54124, Greece.
authors.forename: Vassilios
authors.initials: V
authors.lastname: Kiosseoglou
mesh_terms: D031211:Corylus / Q000737:chemistry*; D003890:Desiccation; D004043:Dietary Fiber; D005511:Food Handling / Q000379:methods; D005519:Food Preservation / Q000379:methods*; D005524:Food Technology; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D010938:Plant Oils / Q000737:chemistry; D012212:Rheology; D012639:Seeds / Q000737:chemistry*; D012677:Sensation; D031685:Sesamum / Q000737:chemistry*; D014867:Water; D003313:Zea mays / Q000737:chemistry*
chemical_list: D004043:Dietary Fiber; D010936:Plant Extracts; D010938:Plant Oils; D014867:Water
keywords: extraction residue; oiling-off; rheology; sesame paste; stability