Extract of plant powder, and water purifier

Patent metadata

Field	Value
Publication number	US-11952297-B2
Application number	US-202318177182-A
Country	US
Kind code	B2
Filing date	Mar 2, 2023
Priority date	Sep 16, 2016
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

Provided are an extract, which is a fractionated component 1 of a water extract of a plant powder, wherein the fractionated component 1 is a fractionated component having a fractionation molecular weight of 12,000 or greater, wherein an ethanol-undissolved component of the fractionated component 1 exhibits a peak attributable to carboxylic acid in a Fourier transform infrared spectroscopy (FT-IR) measurement and exhibits a peak attributable to cellulose in a gas chromatography mass spectrometry (GC-MS) measurement, and wherein an ethanol-dissolved component of the fractionated component 1 exhibits a peak attributable to carboxylic acid in the FT-IR measurement and exhibits a peak attributable to a plant protein in the GC-MS measurement, and a water-purifying agent containing the extract.

First claim

The invention claimed is:

1. A production method for an extract, comprising:
grinding a dry plant, and subjecting the resulting ground plant to extraction using ethyl acetate, to obtain an extraction residue, whereby the plant is Corchorus olitorius or mulukhiya,
further subjecting the extraction residue to extraction using distilled water, to obtain a supernatant, and
subjecting the supernatant to dialysis, to separate a component having a fractionation molecular weight of 12,000 or greater which is a fractionated component 1, and a component having a fractionation molecular weight of less than 12,000,
subjecting the component having a fractionation molecular weight of less than 12,000 to dialysis, to obtain a component having a fractionation molecular weight of less than 6,000 and,
further subjecting the component having a fractionation molecular weight of less than 6,000 to dialysis, to separate a component having a fractionation molecular weight of less than 3,400 which is a fractionated component 2.

2. A water-purifying agent comprising an extract and a polymeric flocculant,
wherein the extract is an extract of Corchorus olitorius or mulukhiya,
wherein the extract is at least one of the fractionated component 1 and the fractionated component 2, which are produced by the production method for an extract according to claim 1 .

3. The water-purifying agent according to claim 2 ,
wherein when the extract is the fractionated component 2, the fractionated component 2 is a water-soluble chitosan.

4. The water-purifying agent according to claim 2 , wherein the polymeric flocculant is polyacrylamide.

5. A wastewater treatment method, comprising:
feeding the water-purifying agent according to claim 2 to wastewater, to remove an inorganic unnecessary substance in the wastewater.

6. The wastewater treatment method according to claim 5 ,
wherein the inorganic unnecessary substance comprises at least one selected from the group consisting of nickel, fluorine, iron, copper, zinc, chromium, arsenic, cadmium, tin, and lead.

Assignees

• Dexerials Corp

Inventors

• Fujita Takanori
• Shimada Ryu
• Ito Masahiko
• Hasegawa Masato

Classifications

• C02F1/5263 Primary

  using natural chemical compounds · CPC title

• B01D21/01

  using flocculating agents (for purifying water C02F1/52; for liquid radioactive waste G21F9/10) · CPC title

• B01J20/22

  comprising organic material · CPC title

• B01J20/24

  Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives · CPC title

• B01J20/3071

  Washing or leaching · CPC title