title: Physicochemical properties and crystallisation behaviour of bakery shortening produced from stearin fraction of palm-based diacyglycerol blended with various vegetable oils.
abstract: The stearin fraction of palm-based diacylglycerol (PDAGS) was produced from dry fractionation of palm-based diacylglycerol (PDAG). Bakery shortening blends were produced by mixing PDAGS with either palm mid fraction, PMF (PDAGS/PMF), palm olein, POL(PDAGS/POL) or sunflower oil, SFO (PDAGS/SFO) at PDAGS molar fraction of XPDAGS=0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%. The physicochemical results obtained indicated that C16:0 and C18:1 were the dominant fatty acids for PDAGS/PMF and PDAGS/POL, while C18:1 and C18:2 were dominant in the PDAGS/SFO mixtures. SMP and SFC of the PDAGS were reduced with the addition of PMF, POL and SFO. Binary mixtures of PDAGS/PMF had better structural compatibility and full miscibility with each other. PDAGS/PMF and PDAGS/SFO crystallised in β'+β polymorphs in the presence of 0.4-0.5% PDAGS while PDAGS/POL resulted in β polymorphs crystal. The results gave indication that PDAGS: PMF at 50%:50% and 60%:40% (w/w) were the most suitable fat blend to be used as bakery shortening.
authors.affiliation: Sime Darby Research Sdn Bhd, R & D Research Centre-Downstream, Lot2664, Jalan Pulau Carey, 42960 Pulau Carey, Selangor, Malaysia.
authors.forename: Razam Ab
authors.initials: RA
authors.lastname: Latip
authors.forename: Yee-Ying
authors.initials: YY
authors.lastname: Lee
authors.forename: Teck-Kim
authors.initials: TK
authors.lastname: Tang
authors.forename: Eng-Tong
authors.initials: ET
authors.lastname: Phuah
authors.forename: Chin-Ping
authors.initials: CP
authors.lastname: Tan
authors.forename: Oi-Ming
authors.initials: OM
authors.lastname: Lai
mesh_terms: D003296:Cooking; D003460:Crystallization; D004075:Diglycerides / Q000737:chemistry*; D008383:Margarine / Q000032:analysis*; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry*
chemical_list: C011439:1,2-diacylglycerol; D004075:Diglycerides; D010938:Plant Oils; D000073878:Palm Oil; D008383:Margarine
keywords: Diacylglycerol fractions; Palm; Shortening; Stearin