PROBLEM TO BE SOLVED: To provide an oil-and-fat composition which is less bitter, and dissolves vitamin B1 at high concentration.SOLUTION: The oil-and-fat composition contains a vitamin B1 derivative or a salt thereof in an amount of 44-8,000 ppm in terms of thiamine and has a hydroxyl group value of 9-100 mg-KOH/g, wherein the content C (ppm) of the vitamin B1 derivative or a salt thereof in terms of thiamine and the hydroxyl group value X (mg-KOH/g) satisfy the relation of numerical formula (1): [Ln(C/143)]/X=0.044, wherein Ln represents natural logarithm.COPYRIGHT: (C)2012,JPO&INPIT【課題】苦味が少なく、ビタミンB1を高濃度溶解する油脂組成物の提供。【解決手段】ビタミンB1誘導体又はその塩をチアミン換算で44~8,000ppm含有し、水酸基価が9~100mg-KOH/gである油脂組成物であって、ビタミンB1誘導体又はその塩のチアミン換算における含有量C(ppm)と水酸基価X(mg-KOH/g)が次式(1)の関係を満たす油脂組成物。(数1)[Ln(C/143)]/X≦0.044 (Ln:自然対数) (1)【選択図】なし
