JPS6236154A - Deoiling of waste food containing oil or fat - Google Patents

Abstract

PURPOSE:To extract oil and fat from a food waste composed mainly of wheat flour containing oil and fat and to enable the reutilization of the wheat flour, by treating the waste with n-hexane and alcohol or treating with carbon dioxide under supercritical condition. CONSTITUTION:A food waste composed mainly of wheat flour containing oil and fat, e.g. cake waste generated during the production of biscuit, cookie, etc., is treated with n-hexane and alcohol or with carbon dioxide gas under supercritical condition. The oil and fat can be extracted from the waste and the wheat flour can be reused.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a method for removing oil from food waste containing oil and fat.

(b) Prior Art Conventionally, for example, powdered waste scraps produced in the manufacturing process of biscuits, kutskii, etc. contain a large amount of oil and fat, and if they are used as is for other purposes, the oxidation phenomenon of the oil and fat will occur. Currently, it is difficult to use it profitably, so it is either discarded or at most used as fertilizer.

(c) Problems to be Solved by the Invention Therefore, among such confectionery products, biscuits, kutskii, etc. that use wheat flour contain fat and oil valves, and therefore powdered waste such as confectionery scraps that contain a large amount of flour. The drawback was that the flour inside confectionery scraps could not be reused in a useful way.

(d) Means for solving the problem In this invention, the fats and oils contained in the food waste, mainly flour containing fats and oils, are extracted by using normal hexane, alcohol, supercritical treatment of carbon dioxide, etc.
It is an object of the present invention to provide a method for removing oil from food waste containing oil and fat by which flour in the food waste can be reused.

(e) Effects In the present invention, in the process of manufacturing food products mainly made from wheat flour containing oil and fat, confectionery scraps are generated from confectionery such as biquettes and kutskies, so these confectionery scraps are extracted by a predetermined method, such as the use of normal hexane. Use of alcohol and alcohol 1b Oils and fats are extracted by supercritical carbon dioxide treatment, etc. After oils and fats are extracted, the remainder is mainly flour, which is the raw material for sweets, etc., and this is because the oils and fats valve are extracted. Since it is made of wheat flour, there is no problem in reusing it, and it is possible to eliminate the loss of confectionery scraps, etc., which were conventionally disposed of, and has the effect of producing economically beneficial results.

(f) Embodiment To explain in detail the embodiment of the present invention, the raw material is food waste containing oil and fat, such as confectionery scraps generated during the manufacturing process of biscuits, kutskis, etc.

These products use a large amount of fat valves for flavoring and kneading, and confectionery scraps also contain a large amount of fat valves.

The following method can be considered as a method for extracting fat valves from these confectionery scraps.

First, there is a method that uses normal hexane, in which a normal hexane solution is sprayed from above while confectionery scraps are conveyed on a mesh conveyor, and a fat valve is dissolved at the bottom to extract oil and fat. Once this is completed, what remains is flour without any oil or fat valves, and this flour can be used again to make confectionery.

Other methods include solvent extraction of fats and oils using alcohol, and methods of removing fat valves by supercritical treatment using carbon dioxide.

As described above, the gist of the present invention lies in the ability to remove oil from semi-destroyed products such as confectionery by using a predetermined oil removal method and reuse them as fat-free flour.

Note that confectionery scraps and the like have a moisture content of 10% or less, and those with a higher moisture content are dehydrated by a prescribed method to maintain the content at 10% or less, and then subjected to the oil removal treatment of the present invention described above. conduct.

Claims (1)

[Claims] 1) Extracting the fats and oils contained in food waste, which mainly consists of flour containing fats and oils, by using normal hexane, alcohol, and supercritical carbon dioxide treatment, making it possible to reuse the flour in the food waste. A method for removing oil from food waste containing fats and oils.