Abstract:
The present invention provides a low-toxicity sophorolipid-containing composition. The low-toxicity sophorolipid-containing composition contains at least a coloring component, an acidic sophorolipid, a fatty acid, and a hydroxy fatty acid that are derived from an SL-producing yeast culture. The composition contains the following components in the following proportions, in terms of dry weight, based on the total amount of the acidic sophorolipid, a lactonic sophorolipid, the fatty acid, and the hydroxy fatty acid in the composition taken as 100 mass %: (1) acidic sophorolipid: 94 to 99.99 mass %, (2) lactonic sophorolipid: 0 to 2 mass %, (3) total amount of fatty acid and hydroxy fatty acid: 0.01 to 4 mass %
Abstract:
The present invention provides a low-toxicity sophorolipid-containing composition. The low-toxicity sophorolipid-containing composition contains at least a coloring component, an acidic sophorolipid, a fatty acid, and a hydroxy fatty acid that are derived from an SL-producing yeast culture. The composition contains the following components in the following proportions, in terms of dry weight, based on the total amount of the acidic sophorolipid, a lactonic sophorolipid, the fatty acid, and the hydroxy fatty acid in the composition taken as 100 mass %: (1) acidic sophorolipid: 94 to 99.99 mass %, (2) lactonic sophorolipid: 0 to 2 mass %, (3) total amount of fatty acid and hydroxy fatty acid: 0.01 to 4 mass %.
Abstract:
The present invention provides a high-purity acid-form sophorolipid (SL)-containing composition characterized by substantially not containing acetic acid. The high-purity acid-form SL-containing composition can be produced, for example, by the following method: (i) adjusting the pH of a partially purified acid-form SL-containing composition to an acidic range; and (ii-a) subjecting an acidified partially purified acid-form SL-containing composition obtained in step (i) to chromatography to acquire a fraction containing an acid-form SL, or (ii-b) leaving the acidified partially purified acid-form SL-containing composition obtained in step (i) to stand under a low-temperature condition to acquire a resulting gelled object.
Abstract:
The present invention provides a high-purity acid-form sophorolipid (SL)-containing composition characterized by substantially not containing acetic acid. The high-purity acid-form SL-containing composition can be produced, for example, by the following method: (i) adjusting the pH of a partially purified acid-form SL-containing composition to an acidic range; and (ii-a) subjecting an acidified partially purified acid-form SL-containing composition obtained in step (i) to chromatography to acquire a fraction containing an acid-form SL, or (ii-b) leaving the acidified partially purified acid-form SL-containing composition obtained in step (i) to stand under a low-temperature condition to acquire a resulting gelled object.