Method for producing purified Salacia genus plant extract, and purified Salacia genus plant extract

Patent metadata

Field	Value
Publication number	US-11602702-B2
Application number	US-202016832098-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Sep 29, 2017
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

Provided are a method for producing a purified Salacia genus plant extract having improved flavor by increasing the α-glucosidase inhibitory activity of the extract without significantly reducing the recovery rate of the extract concomitantly with purification; and a purified Salacia genus plant extract. The method for producing a purified Salacia genus plant extract includes an extraction step of bringing a Salacia genus plant-containing raw material extract including at least one of a Salacia genus plant, a Salacia genus plant extract, and a Salacia genus plant ground product, into contact with 0.1 to 20 mass % of activated carbon in the presence of an extraction solvent.

First claim

What is claimed is:

1. A method for producing a purified Salacia genus plant extract, the method comprising an extraction step of bringing a Salacia genus plant-containing raw material extract comprising at least one of a Salacia genus plant, a Salacia genus plant extract, or a Salacia genus plant ground product, into contact with 0.1 to 20 mass % of activated carbon in the presence of an extraction solvent,
wherein the purified Salacia genus plant extract has a content of the sum of polyphenols and lipids of less than 10 mass % with respect to the total amount of the purified Salacia genus plant extract.

2. The method for producing a purified Salacia genus plant extract according to claim 1 , wherein the time for bringing the Salacia genus plant-containing raw material extract into contact with the activated carbon is 5 minutes to 5 hours.

3. The method for producing a purified Salacia genus plant extract according to claim 1 , wherein water at 10° C. to 100° C. is used as the extraction solvent.

4. The method for producing a purified Salacia genus plant extract according to claim 1 , wherein the activated carbon has a specific surface area of 500 to 2,500 m 2 /g and an average pore diameter of 0.5 to 10 nm.

5. The method for producing a purified Salacia genus plant extract according to claim 1 , wherein the content of epicatechin with respect to the total amount of the purified Salacia genus plant extract is less than 0.004 mass %.

Assignees

• Fujifilm Corp

Inventors

• Iida Atsushi
• Ueda Fumitaka
• Saito Hitomi

Classifications

• A23L27/11

  obtained by solvent extraction · CPC title

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• A23L33/105

  Plant extracts, their artificial duplicates or their derivatives · CPC title

• A61K36/37 Primary

  Celastraceae (Staff-tree or Bittersweet family), e.g. tripterygium or spindletree · CPC title

• A61P3/10

  for hyperglycaemia, e.g. antidiabetics · CPC title