RU2038552C1 - Method of drying mycelium waste of antibiotic industry - Google Patents

Abstract

FIELD: microbiological industry. SUBSTANCE: method consists in three-stage of shifting the mycelium waste through three temperature zones: 30-40 C, 70-80 C and 40-50 C which are created by supplying air to chamber heated to 70-90 C followed by its evacuation. EFFECT: enhanced efficiency. 1 dwg, 1 tbl

Description

 The invention relates to the pharmaceutical industry, and in particular to means for treating mycelial wastes of the antibiotic industry.

 Currently, significant amounts of mycelial waste are sent for deposition, sewage or incinerated, which causes damage to the environment.

 Mycelial waste contains up to 60% of proteins, as well as lipids, carbohydrates, vitamins. Given that mycelial wastes contain certain amounts of valuable useful substances, it is advisable to use them for feeding animals in animal farms.

 However, the use of raw mycelial waste is difficult, because in this case it is necessary to solve the issues of storage of mycelial waste, ensuring their sanitary safety, transportation, storage, wet mycelium quickly decays under normal conditions.

 Therefore, the problem of drying mycelial waste is relevant.

A known method of drying the mycelium of the production of benzylpenicillin. Drying is carried out in a rotating drum by bringing the temperature ^to 400 ^° C until termination of the fermentation with subsequent disposal of waste.

 The known method of drying mycelium does not allow the use of a valuable nutritious product on the farm, since at this temperature the organic part of the mycelial waste is burned out. In addition, the mycelia of many industries, such as levorin, contain residues of organic solvents, which also prevents the use of this method.

Known spray drying the concentrate diluted with water or in the production of mycelium fradizina veterinary preparation with an inlet temperature of 140-150 ^{° C} and outlet 70-80 ^{° C} to obtain a preparation with a moisture content of 6-7%
The disadvantage of this method is the high energy intensity of the process.

Known drying of mycelial waste in a confined space at a temperature of 170-200 ^about C (heat treatment) for a certain time [1]
The disadvantages of this method are the low productivity and relatively high drying temperature, which leads to a partial decomposition of valuable nutritious products.

 The aim of the invention is the development of a new method of drying mycelial waste from the antibiotic industry with the further use of waste to feed fur animals.

The object is achieved in a continuous manner filamentous drying waste, consisting in that mycelial pasty mass is fed into a closed drying chamber consecutively into three conveyor moving in an opposite direction relative to each other, while the chamber supplied with air heated to 70-90 ^{° C,} followed by its suction from the drying chamber through three to five channels, and the air is sucked so that the temperature in the chamber along the vertical zones of air suction varies sequentially in the intervals of 40-50, 7 0-85, 40-50 ^about C.

 Due to the colloidal structure of mycelial waste, they have a high structure-forming ability and low water loss during dehydration. A feature of the proposed method is the relatively low drying temperature, which changes many times during the drying process, which prevents the formation of a protective film and allows for deep drying.

 Thus dried mycelial waste with a moisture content of 4-6% retains all the original valuable nutritional components (see table) and can be used as feed for fur animals.

 The drawing shows a device for implementing the method, consisting of a drive 1, a distributor of mycelial mass 2, a closed chamber 4 containing conveyors 3 with a mesh polypropylene tape 4, a source of air heating 5, an air distributor 6 and an air suction 7.

PRI me R particular implementation of the method. The mycelial mass (waste of tetracycline biosynthesis) with a moisture content of 75-85% from drive 1 is fed to dispenser 2, from which conveyor is uniformly (800 kg / h) pressed onto the first conveyor belt moving at a speed of 8 cm / s (with a drying chamber length of 24 m) belt drying chamber A. The chamber a is supplied heated to 90 ^{° C} with simultaneous air suction through its four channels, wherein suction is performed at different speeds to form three temperature zones 50, 80 and 45 ^C. In the first 3-5 minutes mycelial thermal mass is exposed to 50 ° ^C, of the mycelium is transferred to a zone with a temperature of 80 ^{° C} and held for 2-3 minutes, then for 3-5 minutes the mycelium was subjected to thermal exposure to 50 ° ^C. On the second conveyor, which moves in the opposite direction at a speed of 6 cm / s , heated mycelial mass is subjected to temperature in the reverse order. Pouring from the second conveyor to the third, moving at a speed of 3 cm / s in the opposite direction with respect to the second conveyor, the dried mycelial mass is subjected to the initial temperature regime. The dry product has a moisture content of 4% yield 250 kg / h.

 The table shows that the mycelial waste industry of various antibiotics macrolide, steroid, carbocyclic obtained using microbial fungi, actinomycetes, can be dried by the proposed method. Waste can be directed to deposition or to animal farms as feed.

 Drying parameters of mycelial wastes from the production of various antibiotics and the content of valuable nutrient components in dry mycelium obtained by this method

Claims (1)

A METHOD FOR DRYING A MICELIAL WASTE OF THE ANTIBIOTIC INDUSTRY, including their dehydration by heat treatment in a drying chamber, characterized in that the heat treatment is carried out in three vertical consecutive temperature zones 40 40 ^o C, 70 80 ^o C and 40 50 ^o C, which are created by feeding heated up to 70 90 ^o With air and its suction through 3 5 channels, while the treated waste is moved through these zones on three conveyors moving in opposite directions from each other.

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