Enzymes, micro-organisms and uses thereof, and a method of degrading hydrocarbon chains
US-2024228990-A9 · Jul 11, 2024 · US
Method for degrading biodegradable resin
US2017218163A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017218163-A1 |
| Application number | US-201715491676-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 19, 2017 |
| Priority date | Sep 27, 2013 |
| Publication date | Aug 3, 2017 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An object of the present invention is to provide a method for efficiently degrading a biodegradable resin. In particular, the present invention relates to a method for degrading a biodegradable resin, the method comprising degrading the biodegradable resin in a buffer solution containing a biodegradable resin-degrading enzyme having an optimum pH of 7.5 or higher, wherein no anion derived from a buffer component is present on one side of an equilibrium equation of buffering of the buffer solution, and a pH of the buffer solution is adjusted within a pH range which gives conditions for shifting the equilibrium towards the side on which no anion is present. Further, the present invention relates to a method for degrading a biodegradable resin, the method comprising degrading the biodegradable resin in an enzymatic reaction liquid containing a biodegradable resin-degrading enzyme having an optimum concentration, wherein the degradation is conducted in a reaction liquid having an enzyme concentration which gives a biodegradable resin degradation ratio of 60% or higher, where a biodegradable resin degradation ratio at said optimum concentration is referred to as 100%.
First claim
Opening claim text (preview).
1 - 2 . (canceled) 3 . A method for degrading a biodegradable resin, the method comprising degrading the biodegradable resin in an enzymatic reaction liquid containing a biodegradable resin-degrading enzyme having an optimum concentration, wherein the degradation is conducted in a reaction liquid having an enzyme concentration which gives a biodegradable resin degradation ratio of 60% or higher, where a biodegradable resin degradation ratio at said optimum concentration is referred to as 100%. 4 . The method according to claim 3 , wherein the biodegradable resin-degrading enzyme is an alkaline protease. 5 . The method according to claim 3 , wherein the biodegradable resin comprises a polylactic acid-based resin. 6 . The method according to claim 3 , wherein the biodegradable resin is in a form of a pellet, a film, a powder, a single-layer fiber, a core-sheath fiber, or a capsule.
Assignees
Inventors
Classifications
Biodegradable polymers · CPC title
- C08J11/105Primary
by treatment with enzymes · CPC title
Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2367/06 takes precedence) · CPC title
Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80) · CPC title
Plastics recycling; Rubber recycling · CPC title
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- What does patent US2017218163A1 cover?
- An object of the present invention is to provide a method for efficiently degrading a biodegradable resin. In particular, the present invention relates to a method for degrading a biodegradable resin, the method comprising degrading the biodegradable resin in a buffer solution containing a biodegradable resin-degrading enzyme having an optimum pH of 7.5 or higher, wherein no anion derived from …
- Who is the assignee on this patent?
- Toyo Seikan Group Holdings Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08J11/105. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Aug 03 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).