DE2532176A1 - Microwave sterilisation of deep frozen non metallic objects - killing micro-organisms by heating and loss of water - Google Patents

Abstract

Sterilisation is carried out by placing glass tubes which are closed at one end below water level in a glass vessel containing salt water. Perforated paper is suspended between the water surface and the top of the vessel, and on it is placed the material to be sterilised, which may be made of rubber or plastic, which has been cleaned with alcohol soln., and which is deep-frozen. The vessel is exposed to microwave energy with a wavelength of 2.5 cm. and a frequency of 2450 MHz. The alternating action of the microwave causes the reciprocating water molecules in the resonator cavity to orient themselves in an electrostatic field. The salt water decomposes into Na+ and Cl- ions surrounded by hydrate shells. Rising of gases together with positively and negatively charged water particles causes the formation above water level of colloidal particles which become slightly heated without prior vapour formation, forming condensation on the objects to be sterilized.

Description

Sterilization process using microwave energy is used a microwave energy of a wavelength of 2.5 cm and a frequency of 2450 MHz.

This is based on the principle that the interaction These microwaves move back and forth in the resonance cavity Orient water molecules to an electrostatic field.

Thanks to a high electrical constant and a high degree of absorption accelerated molecular movement occurs in the water. This increases the relative humidity without significant heating of the ambient air.

Drag particles with an electrical charge (IONS) or partial charges H2O molecules and surround themselves with a water (hydrate) coat.

Proteins (microorganisms) hydrate to colloidal solubility i.e. they are free to move in water and change from their "actual country" in the event of water loss in a gel, with this change in consistency the ability of the free mobility is extinguished.

Effect In the introduced water container, when the Magnetrons accelerate the water molecules.

The saline solution added, for example, dissociates into Na + and Cl.

These positive and negative ions are surrounded by a hydrate mantle surround.

The water in the one-sided closed glass tube - located in a glass jar - can only move in one direction.

This water movement is caused by the accelerated molecular movement and gas mixtures escaping from the water.

By the rising of the gas mixture - mixed with positive and negative charged water particles - colloidal particles are formed above the water level, which follow the collision processes of Brownian motion and are slightly heated in the process, without prior steam formation.

This charged air is located above the water level of the glass vessel at the same time on both sides of the separation through e.g. perforated paper, or other material that does not absorb energy.

Temperature differences between the room air in the glass container and the pre-cooled material to be sterilized leads to the formation of condensation on it Objects.

This creates energy absorption of the condensate, which leads to a very brief heating of the water and especially of the materials to be sterilized existing organic substances leads.

Due to this heating and the loss of water the microorganisms become these proteinaceous substances are killed.

Procedure In a microwave oven a glass vessel is filled with Water point.

Table salt or a similar substance is added to this water beforehand. admitted.

In the glass vessel there are glass tubes, closed on one side.

The water level should be chosen so that all tubes are covered are.

There is a perforated between the water level and the top of the glass vessel Paper or the like stretched.

The material to be sterilized is matched with one for the particular material compatible alcohol solution or similar.

The material to be treated is frozen.

The material to be sterilized is made on the perforated paper Plastic or rubber laid.

The irradiation time is determined by the amount, volume, shape of the item to be sterilized Material determined.

Claims (1)

Patent claims Generic term: Process for killing microorganisms on non-metallic ones Objects by means of microwave energy, identifying part: marked thereby, that in a vessel that is filled with water, which is enriched with table salt or a similar substance several tubes, closed on one side, are brought above the water level perforated paper or similar stretched and then dosed with alcohol solution or Similar pre-cleaned material to be sterilized is placed in a deep-frozen state will.