Method for producing powdered oil and/or fat composition
Described is a method for producing powdered oil and/or fat composition containing an oil and/or fat component that includes one or more XXX-type triglycerides with specific fatty acid residue X, the method comprising (a) preparing solid oil and/or fat composition raw material containing XXX-type triglycerides; (b) heating the solid oil and/or fat composition raw material obtained in (a) at a temperature below melting point thereof to transform the oil and/or fat component in the solid oil and/or fat composition raw material into β-type oil and/or fat, thereby obtaining β-type oil and/or fat-containing composition raw material; and (c) pulverizing the β-type oil and/or fat-containing composition raw material obtained in (b) by collision among the raw materials without mechanical pulverization, thereby obtaining powdered oil and/or fat composition.
1 . A method for producing a powdered fat composition containing an fat component that includes one or more XXX-type triglycerides with a fatty acid residue X having x carbon atoms at positions 1 to 3 of glycerin, wherein the number of carbon atoms, x, is an integer selected from 16 to 20, and the fat component includes a β-type fat, and the powdered fat composition has a loose bulk density of 0.05 to 0.6 g/cm 3 , the method for producing a powdered fat composition comprising the following steps:
(a) preparing a solid fat composition raw material containing XXX-type triglycerides;
(b) heating the solid fat composition raw material obtained in the step (a) at a temperature below a melting point thereof to transform the fat component in the solid fat composition raw material into β-type fat, thereby obtaining a β-type fat-containing composition raw material; and
(c) pulverizing the β-type fat-containing composition raw material obtained in the step (b) by collision among raw materials without mechanical pulverization, thereby obtaining a powdered fat composition.
2 . The method for producing a powdered fat composition according to claim 1 , containing 50% by mass or more of the XXX-type triglycerides in the powdered fat composition when a total mass of the powdered fat composition is set to 100% by mass.
3 . The method for producing a powdered fat composition according to claim 1 , wherein the temperature below the melting point in the step (b) is lower by 1 to 30° C. than the melting point of the solid fat composition raw material.
4 . The method for producing a powdered fat composition according to claim 1 , wherein the step (b) is performed while the solid fat composition raw material is left standing.
5 . The method for producing a powdered fat composition according to claim 1 , wherein the step (b) is performed while the solid fat composition raw material is left non-standing.
6 . The method for producing a powdered fat composition according to claim 5 , wherein non-standing state is a state of stirring the solid fat composition raw material.
7 . The method for producing a powdered fat composition according to claim 1 , wherein pulverization by collision among raw materials in the step (c) is pulverization using an airflow pulverizer without mechanical pulverization.
8 . The method for producing a powdered fat composition according to claim 1 , wherein the solid fat composition raw material containing the XXX-type triglycerides is rapeseed hardened oil.
9 . The method for producing a powdered fat composition according to claim 1 , wherein the step (b) is a step of heating the solid fat composition raw material obtained in the step (a) at a temperature below a melting point thereof to transform the fat component in the solid fat composition raw material into β-type fat without melting the raw material, thereby obtaining a β-type fat-containing composition raw material.
10 . The method for producing a powdered fat composition according to claim 1 , wherein the integer is selected from 16 to 18.