title: Physicochemical Properties of Defatted Rambutan (Nephelium lappaceum) Seed Flour after Alkaline Treatment.
abstract: Rambutan seeds were subjected to SC-CO₂ extraction at 35 MPa, 45 °C to obtain defatted rambutan seed flour. Its physicochemical properties before and after treatment with alkali solution using 0.075 N NaOH were investigated. Alkali-treated flour had a significant increment in bulk density, swelling power, water adsorption capacity, emulsion capacity and stability but a reduction in turbidity, solubility and oil absorption capacity. Pasting measurements showed peak viscosity, breakdown, setback and final viscosity increased significantly for the alkali-treated flour, while pasting temperature decreased. The alkaline treatment decreased the least gelation concentration, but increased the apparent viscosity.
authors.affiliation: Food Technology Department, Thailand Institute of Scientific and Technological Research, 35 Moo 3, Technopolis, Khlong Luang, Pathum Thani 12120, Thailand. jirawat@tistr.or.th.
authors.forename: Jirawat
authors.initials: J
authors.lastname: Eiamwat
authors.affiliation: Food Technology Department, Thailand Institute of Scientific and Technological Research, 35 Moo 3, Technopolis, Khlong Luang, Pathum Thani 12120, Thailand. sorada@tistr.or.th.
authors.forename: Sorada
authors.initials: S
authors.lastname: Wanlapa
authors.affiliation: Food Technology Department, Thailand Institute of Scientific and Technological Research, 35 Moo 3, Technopolis, Khlong Luang, Pathum Thani 12120, Thailand. sukit@tistr.or.th.
authors.forename: Sukit
authors.initials: S
authors.lastname: Kampruengdet
mesh_terms: D000327:Adsorption; D000468:Alkalies / Q000737:chemistry; D004043:Dietary Fiber; D004655:Emulsions; D005433:Flour; D010936:Plant Extracts / Q000737:chemistry*; D029631:Sapindaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D012995:Solubility; D014783:Viscosity; D014867:Water / Q000737:chemistry
chemical_list: D000468:Alkalies; D004043:Dietary Fiber; D004655:Emulsions; D010936:Plant Extracts; D014867:Water
keywords: Rambutan (Nephelium lappaceum); alkali treatment; flour; physicochemical properties