[Effect of crystallization temperature of palm oil on its crystallization. IV. The influence of tripalmitoylglycerol (PPP) on the crystallization of 1,3-dipalmitoyl-2-oleoyl-glycerol (POP) and 1,2-dioleoyl-3-palmitoyl-glycerol (POO)].
Triacylglycerin in Palm Oil contains POP (1,3-dipalmitoyl-2-oleoyl-glycerol) at 30%, POO (1,2-dioleoyl-3-palmitoyl-glycerol) at 20% and PPP (tripalmitoylglycerol) at 5%. The crystallization temperature of PPP is high and the rates of crystal nuclear formation and growth are fast. It is thus considered that PPP may have some effect on the manner or mode of Palm Oil. Examination was thus made to clarify how PPP may affect the crystallization of POP and POO by differential scanning calorimetry (DSC) and X ray diffractometry (XRD) conducted on PPP/POP and PPP/POO mixtures. High and low temperature peaks were noted to appear on the DSC crystallization curve for either of these mixtures. The high temperature peak was considered possibly due to PPP, and the low temperature peak, to POP or POO. DSC isothermal analysis indicated the rate of crystal growth of either mixture to exceed that of pure of POP or POO. Crystal mixture structure was also seen to be complicated than either compound in pure form. The present findings thus clearly indicate that clarification should be made of the effects of high melting point triacylglycerin, such as PPP, on the crystallization of Palm Oil.
Mihara
Hiroaki
H
Miyoshi Oil & Fat Co., Ltd., Katsushika-ku, Tokyo, Japan. MIHARAH@so.miyoshi-yushi.co.jp
Ishiguro
Takashi
T
Fukano
Hidenori
H
Taniuchi
Shigeyuki
S
Ogino
Keizo
K
D003460:Crystallization; D005990:Glycerol / Q000031:analogs & derivatives* / Q000737:chemistry; D000073878:Palm Oil; D044367:Phase Transition; D010938:Plant Oils / Q000737:chemistry*; D013696:Temperature; D014280:Triglycerides / Q000737:chemistry*; D014961:X-Ray Diffraction
C500680:1,3-dipalmitoyl-2-oleoylglycerol; D010938:Plant Oils; D014280:Triglycerides; D000073878:Palm Oil; C005859:tripalmitin; D005990:Glycerol; C106818:1,2-dioleoyl-3-palmitoylglycerol