Physicochemical properties and crystallisation behaviour of bakery shortening produced from stearin fraction of palm-based diacyglycerol blended with various vegetable oils

Razam Ab Latip, Yee Ying Lee, Teck Kim Tang, Eng Tong Phuah, Chin Ping Tan, Oi Ming Lai

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23 Citations (Scopus)

Abstract

The stearin fraction of palm-based diacylglycerol (PDAGS) was produced from dry fractionation of palmbased 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 b 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.

Original languageEnglish
Pages (from-to)3938-3946
Number of pages9
JournalFood Chemistry
Volume141
Issue number4
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Diacylglycerol fractions
  • Palm
  • Shortening
  • Stearin

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