Abstract: There is provided a novel method for suppressing coloration of an oil and fat composition when a food ingredient is fried using the oil and fat composition. This method includes a step for adding a preparation oil to an edible oil and fat, and is such that: the preparation oil is a substance that has been subjected, in a step for refining a crude raw oil obtained from olives serving as an oilseed raw material, to (1) an optionally implemented neutralization step, (2) an optionally implemented bleaching step, and (3) an optionally implemented deodorization step in the stated order, without a degumming step having been implemented, where at least one of the (2) bleaching step and the (3) deodorization step is implemented; and an absorbance difference of the preparation oil is 0.05 or more, the absorbance difference being obtained by subtracting the absorbance at a wavelength of 750 nm from the absorbance at a wavelength of 660 nm, with isooctane used as a control.

Abstract: [Problem] To provide: a method for suppressing the coloration of oils and fats during frying; and a coloring inhibitor. [Solution] A method for suppressing the coloration of an oil/fat composition for frying, the method comprising a step for adding a prepared oil to an edible oil or fat, wherein the prepared oil is obtained through (1) a degumming step, (2) a neutralization step which may or may not be performed, (3) a bleaching step which may or may not be performed, and (4) a deodorizing step, in this order, in the process of refining a crude oil obtained from an oil feedstock, and the absorbance difference determined by subtracting the absorbance at a wavelength of 750 nm from the absorbance at a wavelength of 660 nm of the prepared oil obtained from step (3) is at least 0.030 when isooctane is used as the control. A coloring inhibitor characterized by containing said prepared oil.

Abstract: [Problem] To provide: a method for improving the stability of an oil or fat composition for frying use by preventing the coloration of the oil or fat composition and also preventing the increase in an anisidine value and the decrease in the content of a tocopherol compound in the oil or fat composition when a food material is fried with the oil or fat composition; and a stabilizer for an oil or fat composition for frying use. [Solution] A method for stabilizing an oil or fat composition for frying use according to the present invention is characterized in that a chlorophyll compound is added at a concentration of 0.05 to 2 ppm by mass inclusive to an edible oil or fat. It is preferred that the chlorophyll compound is added in the form of a chlorophyll compound-rich solution having a chlorophyll compound concentration of 1 to 1,000 ppm by mass inclusive. A stabilizer for an oil or fat composition for frying use according to the present invention contains a chlorophyll compound as an active ingredient.

Abstract: [Problem] To provide: a method for suppressing the coloration of oils and fats during frying; and a coloring inhibitor. [Solution] A method for suppressing the coloration of an oil/fat composition for frying, the method comprising a step for adding a prepared oil to an edible oil or fat, wherein the prepared oil is obtained through (1) a degumming step, (2) a neutralization step which may or may not be performed, (3) a bleaching step which may or may not be performed, and (4) a deodorizing step, in this order, in the process of refining a crude oil obtained from an oil feedstock, and the absorbance difference determined by subtracting the absorbance at a wavelength of 750 nm from the absorbance at a wavelength of 660 nm of the prepared oil obtained from step (3) is at least 0.030 when isooctane is used as the control. A coloring inhibitor characterized by containing said prepared oil.

Abstract: [Problem] To provide: a method for suppressing an increase in the anisidine value and a decrease in the amount of tocopherols in a fats and oils composition during frying; an inhibitor for suppressing an increase in the anisidine value; and an inhibitor for suppressing a decrease in the amount of tocopherols.