Acid type sophorolipid-containing composition which is suppressed in browning

A hydrolysate of a composition containing lactonic sophorolipid and acidic sophorolipid, the acidic sophorolipid being present in a proportion of 78 mass % or more, based on the total amount of the lactonic sophorolipid and the acidic sophorolipid taken as 100 mass %,

• wherein a filtrate of the hydrolysate has the following features (1), (2), (4), (5), and (6):
• (1) a hue value of 5 or less,
• (2) an ethanol-insoluble content of less than 3 mass %,
• (4) a pH of 6 to 9,
• (5) a saponification value of 1 to 25 mgKOH/g, and
• (6) an ignition residue content of 1.3 to 16 mass %,
• wherein the filtrate of the hydrolysate is a filtrate obtained by adjusting the hydrolysate of the composition containing lactonic sophorolipid and acidic sophorolipid to room temperature 25±5° C. and then filtering the adjusted hydrolysate through a filter with a pore size of 0.45 μm, and
• wherein the hue value is a value obtained by dissolving the filtrate in distilled water to achieve an ethanol-soluble content of 3 mass %, filtering the diluted aqueous solution through a filter with a pore size of 0.45 μm, measuring the absorbance of the obtained filtrate at a wavelength of 440 nm using an infrared/UV-visible spectrophotometer, and multiplying the absorbance by 10;
• with the proviso that the hydrolysate excludes an acidic sophorolipid-composition obtained by hydrolyzing the composition containing lactonic sophorolipid and acidic sophorolipid and then purifying the resulting hydrolysate by column chromatography.