JPH0241166A - Bacteria removing filter - Google Patents

Abstract

PURPOSE:To efficiently remove bacteria from air or water by immobilizing bacteriolytic enzyme on an enzyme immobilizing carrier having a specific shape composed of ceramic, glass or an org. polymer by a carrier bonding method to arrange the same in a flow passage of air or water. CONSTITUTION:This filter is constituted of an enzyme immobilizing carrier 1 composed of porous membrane ceramic having bacteriolytic enzyme immobilized thereon and a support 2 for holding said enzyme immobilizing carrier 1. As the bacteriolytic enzyme, there are deoxyribonuclease, ribonuclease and protease. As the enzyme immobilizing carrier, ceramic, glass or an org. polymer is used in a porous membrane form, a filament yarn form, a spun yarn form, a reticulated form obtained by knitting filament yarns or spun yarns or a granular form. The bacteriolytic enzyme is immobilized on the enzyme immobilizing carrier by a carrier bonding method, a crosslinking method, an inclusion method or a composite method being a combination of above-said methods. This bacteria removing filter is arranged to the blow-out port of a humidifier, an air purifier or an air conditioner to easily remove bacteria in air or steam.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sterilization filter that is installed in a flow path for air, water, etc. and sterilizes the air, water, etc.

[Conventional technology]

Conventionally, sterilization of air, water, etc. has been carried out using dust filters and water filtration filters. These are used to block and remove bacterial cells using a porous membrane.

However, the eradication rate of these methods is low (about 30%), and
Increasing the thickness of the membrane in order to increase the sterilization rate resulted in a large pressure loss, making it impractical for practical use.Furthermore, there were many problems, such as the fact that the blocked bacteria could propagate on the filter. .

[Problem to be solved by the invention]

As mentioned above, conventional methods have a low sterilization rate, and
There was a problem in that the blocked bacteria could propagate on the filter.

The present invention was made to solve the above problems,
To provide a sterilization filter that has a high sterilization rate, is inexpensive, and has a simple structure.

[Failure to solve the problem]

The sterilization filter of the present invention is suitable for immobilizing lytic enzymes in the form of porous membranes, fibers, threads, meshes, or particles of ceramic, glass, or organic polymers using a carrier bonding method or the like. The structure is such that it can be immobilized on a carrier and placed in a flow path for air, water, etc. to sterilize air, water, etc.

[Effect]

Deoxyri? When lytic enzymes such as nucleases, ribonucleases, and proteases come into contact with bacterial cells present in fluids such as air and water, they lyse the cell walls of the bacterial cells and kill the bacterial cells.

〔Example〕

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG.
It is an explanatory view showing the structure of the example shown in the figure as seen from the side.

In the figure, 1 is a porous membrane-like ceramic enzyme-immobilized carrier on which a lytic enzyme is immobilized, and 2 is a support for holding the enzyme-immobilized carrier 1.

Deoxylyte for lytic enzyme? These include nucleases, ribonucleases, and proteases.

Suitable carriers for enzyme immobilization include ceramics, glass, or organic polymers in the form of porous membranes, fibers, spun threads, networks of fibrous or spun materials, or particles. be.

Methods for immobilizing a lytic enzyme on an enzyme-immobilized carrier include a carrier binding method, a crosslinking method, an entrapping method, and a composite method combining the above methods.

Enzyme-immobilized carriers in the form of porous membranes, fibers, spun fibers, or networks may be used alone, but FIG. 1 shows a structure in which a plurality of enzyme-immobilized carriers are incorporated into the support 2. Placing this at the outlet of a humidifier, air purifier, air conditioner, etc. makes it easy to sterilize air and water vapor.

FIG. 3 is an explanatory diagram showing another embodiment of the present invention.

In the figure, 1a is a mesh-like enzyme immobilization carrier on which a lytic enzyme is immobilized, and 3 is a liquid holding tank for buffer solution, water, etc.

This is suitable for sterilization using dry gas, etc., and buffer solution, water, etc. are filled from the liquid storage tank 3 around the enzyme-immobilized carrier 1a to facilitate the enzyme reaction.

When the carrier for enzyme immobilization is in the form of particles, sterilization of a liquid can be easily performed by immobilizing the lytic enzyme with chemical bonds, filling it in a column, and placing the column in a fluid flow path. Additionally, by using activated carbon in a water purifier, it can effectively sterilize tap water.

By using these sterilization filters, the spread of influenza viruses, E. coli, etc. can be prevented.

〔Effect of the invention〕

As explained above, the sterilization filter of the present invention has a simple structure, so it can be easily installed at the outlet of a humidifier, air purifier, air conditioner, etc.
It can sterilize air, water, etc. much more efficiently than before.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG.
FIG. 3 is an explanatory diagram showing the structure of the embodiment shown in the figure when viewed from the side, and FIG. 3 is an explanatory diagram showing another embodiment of the present invention. 1.1a...Enzyme immobilization carrier on which a lytic enzyme is immobilized, 2...Support, 3...Liquid holding tank, the same reference numerals in the drawings indicate the same parts. Patent applicant New Japan Radio Co., Ltd.

Claims (4)

[Claims] (1) Deoxyribonuclease, ribonuclease,
A lytic enzyme such as protease is immobilized on an enzyme immobilization carrier by a carrier binding method, a crosslinking method, an entrapping method, or a composite method combining the above methods, and is placed in a flow path for air, water, etc. A sterilizing filter that sterilizes bacteria. (2) The carrier for enzyme immobilization is ceramic, glass, porous membrane of organic polymer, fiber, or spun, or a mesh made of the above-mentioned fibers or spun. 2. The sterilization filter according to claim 1, wherein the filter has a shape of: (3) The sterilizing filter according to claim 1, wherein the enzyme immobilization carrier is in the form of ceramic, glass, or organic polymer particles. (4) A claim characterized in that a liquid holding tank containing a buffer solution, water, etc. is arranged around the enzyme immobilization carrier, and the buffer solution, water, etc. oozes out around the enzyme immobilization carrier from the liquid holding tank. The sterilization filter according to item 1.