JPH0573384B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an oil temperature dehydration method using a ceramic coating extractor.

(B) Conventional Technology Conventionally, a courier made of metal such as iron or stainless steel has been used for oil-temperature dehydration treatment, which is performed by immersing raw materials in heated oil and evaporating the moisture in the raw materials.

(c) Problems to be solved by the invention However, in the case of iron cutters, metal ions generated due to moisture, salt, etc. in the raw materials migrate to the raw materials being processed, impairing the flavor of the product. When a stainless steel puller was used to prevent this, there were drawbacks such as the hardening of the heated oil being accelerated by the action of a catalyst such as chromium in the material.

(d) Means for Solving the Problems In this invention, the liquid-contact surface of a metal shoemaker is coated with ceramic coating to prevent contact between metal and oil. For the initial 30 minutes after immersing the raw materials, while maintaining the temperature of the heated oil at 60°C or higher and lower than 120°C, 10~20mm
Oil-temperature dehydration using a ceramic coating extractor, which is characterized by performing a two-step depressurization of 740 to 750 mmHg in the next step to evaporate the water in the raw material, and then de-oiling the dehydrated raw material under reduced pressure conditions. It is intended to provide law.

(e) Effect In this invention, by using a shoemaker whose wetted parts are coated with ceramic, there is no contact between the heated oil and the metal, and therefore, the transfer of metal ions,
And, there is no deterioration of heated oil, and dehydration processing can be performed at relatively low temperatures of 60°C or higher and lower than 120°C.
It is possible to perform dehydration treatment efficiently and at low cost. In addition, it further prevents the deterioration of the heated oil and the destruction of nutrients in the raw materials, and by continuing the deoiling treatment under reduced pressure conditions, unlike deoiling under normal pressure, it is possible to return the oil to normal pressure to a large extent. Since oil is removed before heated oil is forced into the raw material structure by atmospheric pressure, the efficiency of oil removal is high and the amount of residual oil in the product is small.

(f) Effects According to the present invention, raw materials of animals, seafood, vegetables, and fruits are dehydrated using a ceramic coating extractor under two-step reduced pressure conditions using heated oil as a heat medium, and then dehydrated under reduced pressure conditions. By de-oiling, the flavor and nutrients of the raw materials are preserved,
A product with low residual oil content can be obtained.

(G) Examples To explain the examples of the present invention in detail, 4.5
Pour single oil or mixed oil such as animal oil, vegetable oil, mineral oil, animal and vegetable oil into a ^m3 cup, and add 60 m of the same oil.
Heat oil to a constant temperature of ~120℃.

In particular, a ceramic coating is applied to the liquid-contacting surface of the inner surface of the puller by a method such as plasma spraying, and this coating blocks contact between the heating oil and the metal that is the structure of the puller. Since the constructed ceramic is chemically inert, it prevents ion migration and accelerated deterioration of heated oil. Ceramic coating also has high wear resistance, which physically extends the life of the shoe.

A steam jacket is provided around the outer circumference of the jacket, and the steam flowing through the jacket transfers heat to the heating oil inside.The coating has good heat conductivity and is thin. , does not impede the heat transfer.

Next, approximately 250 kg of raw materials such as animals, seafood, vegetables, and fruits are placed in the heated oil and immersed, and the lid of the cooker is closed.

Next, the heating oil is kept at a constant temperature of 60 to 120°C while stirring in the cooker, and the pressure inside the cooker is reduced.

Such a vacuum treatment is carried out under mild vacuum conditions, i.e., a vacuum of 10 to 20 mmHg, where the protein is likely to thermally coagulate for the first 30 minutes or so after the raw material is immersed in the heated oil, and then under strong vacuum conditions, i.e., The treatment is carried out for about 60 minutes under a substantially vacuum condition of reduced pressure of 740 to 750 mmHg, and the water is dehydrated to a water content of around 3 to 6%.

In other words, at the beginning of decompression, the oil temperature and
Under mild decompression conditions of mmHg, the water-soluble proteins and gelatin of animals and seafood are first coagulated and stabilized, preventing the outflow and decomposition of these taste components, and removing the fat that accompanies the outflow of these taste components. The structure is designed to prevent the leakage of vitamins. In addition, under such conditions, the water-soluble proteins of vegetables and fruits are also coagulated and stabilized, preventing them from flowing out and decomposing, and also preventing the carbohydrates, inorganic salts, and vitamins that accompany these leaks from flowing out. .

In addition, depending on the oil temperature and the reduced pressure conditions of 740 to 750 mmHg from the middle of processing, the water contained in the raw material is evaporated, and the water is replaced with the heated oil in the raw material structure, and the heated oil is converted into the raw material. It penetrates deeply into the tissue and heats the raw material from inside and outside the tissue using a heating medium, making it possible to dehydrate it in a short time.
Therefore, it can prevent the leakage and deterioration of water-soluble proteins, gelatin, fats, and vitamins in animals and seafood, and it can also denature and eliminate basic nitrogen, a malodorous component in tissues, by applying oil temperature. It is.

It can also prevent the deterioration and leakage of water-soluble proteins, inorganic salts, and vitamins in vegetables and fruits.

The dehydrated raw material is then subsequently deoiled under reduced pressure conditions, but in this deoiling process, when the raw material is permeated into heated oil, the raw material is stored in a wire mesh basket in advance, and the dehydrated raw material is After the treatment, the heated oil is removed by a method such as removing it from the couture.

The raw materials that have been dehydrated and deoiled as described above are
The product is used as food or feed.

In addition, if you want to further reduce the oil content of the product,
The oil can be dissolved and extracted using an organic solvent such as n-hexane.

Claims (1)

[Claims] 1 At 60°C in a ceramic coater with ceramic coating applied to the wetted surface of the metal coater to prevent contact between metal and oil.
Animals, seafood, vegetables, and fruits as raw materials are immersed in heated oil that has been heated to a temperature above 120°C, and while maintaining the temperature of the heated oil at a temperature above 60°C and below 120°C, the initial 30 minutes after immersion of the raw materials are Ceramic coated ingots are characterized in that the moisture in the raw material is evaporated by performing two-step depressurization of 10 to 20 mmHg for 1 minute and 740 to 750 mmHg in the next step, and then the de-oil treatment is performed from the dehydrated raw material under reduced pressure conditions. Kerr's oil temperature dehydration method.