Acid Sophorolipid Composition with Suppressed Browning

ChangeBridge: Patent Grants - Pharma (A61K)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted patent US12589154B2 to SARAYA CO., LTD. for an acidic sophorolipid-containing composition with suppressed browning. The patent covers compositions meeting specific hue value (≤5 Abs. 440) and ethanol-insoluble content (<3 mass%) thresholds, along with production methods. Seven claims protect the composition and its method of manufacture.

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What changed

USPTO issued Patent No. US12589154B2 to SARAYA CO., LTD. (inventors: Michiaki Araki, Yoshihiko Hirata) on March 31, 2026. The patent claims an acidic sophorolipid-containing composition with suppressed browning, characterized by a filtrate of the hydrolysate meeting specific criteria: hue value (Abs. 440) of 5 or less, and/or ethanol-insoluble content of less than 3 mass%. The composition derives from lactonic and acidic sophorolipid hydrolysis.

This is a granted patent conferring exclusionary intellectual property rights. Competitors developing similar sophorolipid-based compositions for cosmetics (A61K8/9728), food applications (A23L33/14), or cleaning products (C11D1/36) should design around these claims. No regulatory compliance actions are required; this is an IP notification. Patent term runs 20 years from the January 15, 2020 filing date.

Source document (simplified)

← USPTO Patent Grants

Acid type sophorolipid-containing composition which is suppressed in browning

Grant US12589154B2 Kind: B2 Mar 31, 2026

Assignee

SARAYA CO., LTD.

Inventors

Michiaki Araki, Yoshihiko Hirata

Abstract

The present invention provides an acidic sophorolipid-containing composition with suppressed browning and a method for producing the composition. The acidic sophorolipid-containing composition with suppressed browning according to the present invention is characterized in that a filtrate of a hydrolysate of a composition containing lactonic sophorolipid and acidic sophorolipid, i.e., a filtrate of the acidic sophorolipid-containing composition, has at least one of the following features (1) and (2):
(1) hue value (Abs. 440): 5 or less; and(2) ethanol-insoluble content: less than 3 mass %.

CPC Classifications

A61K 47/46 A61K 8/9728 A61K 2800/805 A61K 8/498 A61K 8/604 A61K 2800/10 A61K 2800/26 A23L 33/14 A23L 29/04 A23L 29/10 A23L 29/00 A61Q 19/00 A61Q 19/10 C11D 1/36 A23V 2002/00 C07H 1/00 C07H 15/04 C12P 19/44