A kind of drying system of fermented cordyceps sinensis mycelia and drying means thereof
Technical field
The present invention relates to food and medicine processing technique field.Be specifically related to a kind of drying system of fermented cordyceps sinensis mycelia and utilize this system to be dried the method for fermented cordyceps sinensis mycelia.
Background technology
At fermentation method, produce in the technique of aweto mycelium at present, the drying mode of cordyceps mycelia be bipyramid vacuum rotary drying, oven drying or first utilize Drying tunnel that it is predrying, and then with fluidized drying by its bone dry.In practice, we find that this drying mode exists following defect: the mycelium after oven dry is faint in color, and drying time is long, and the mycelium after oven dry easily lumps, and is charred taste; Or the shortcomings such as the low and drying efficiency of heat utilization rate is low.
A kind of natural fresh cordyceps sporophore vacuum freeze-drying method is disclosed in patent " a kind of biological freeze drying method of Cordyceps sinensis " (application number 200710011666.7).The product nutritional labeling that the method is produced is not lost, and color and luster is as aquatic foods, long shelf-life, but energy consumption is very high, add that drying efficiency is not high, the natural cordyceps very high for added value may be suitable for,, added value relatively low fermentation Cordyceps sinensis large for output, not too applicable.
A kind of drying means of fermented cordyceps sinensis mycelia is disclosed in patent " a kind of drying means of fermented cordyceps sinensis mycelia " (application number 200910101753.0).It is predrying that it adopts tunnel type micro wave baking oven to carry out, and then carries out fluidized drying, has raising drying efficiency, the advantages such as quality that reduce energy consumption and improve finished product.But it is larger that microwave drying has investment, the problem such as energy consumption is relatively high.
Summary of the invention
The object of the invention is to design for prior art above shortcomings a kind of drying system of fermented cordyceps sinensis mycelia.
A further object of the invention is to provide the method for utilizing the dry fermented cordyceps sinensis mycelia of this system.Adopt this method can make cordyceps mycelia obviously shorten drying time, enhance productivity, the mycelium color after oven dry and bright mycelium solid colour, glossy, dried mycelium does not lump, and active ingredient is substantially constant.This technological operation is simple, and equipment investment is little, and energy consumption is little, has good economic and social benefit.
The object of the invention is to realize in the following manner:
A drying system for fermented cordyceps sinensis mycelia, this system comprises vacuum-type drum filter, double screw banded extruder and vibrated fluidized bed, the discharging opening of double screw banded extruder connects the charging aperture of vibrated fluidized bed by belt conveyor.The discharging opening of vibrated fluidized bed 3 connects the charging aperture of cyclone separator.The air inlet of cyclone separator connects air-introduced machine, between cyclone separator and air-introduced machine, can also be connected silencer.The charging aperture of double screw banded extruder connects the discharging opening of forcing charger.Force the charging aperture of charger to connect conveying worm.
Utilize the method for the dry fermented cordyceps sinensis mycelia of said system to comprise the following steps:
Raw material, after vacuum-type drum filter centrifugal dehydration, is got mycelium and is adopted double screw banded extruder double screw banded extruder extruder grain, drier by vibrated fluidized bed syllogic; Fluidized bed drying Material control temperature is 55-65 ℃.Double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm in the method, rotating speed 30-120rpm, temperature range 30-45 ℃, preferred rotating speed 120rpm, 40 ℃ of temperature ranges.
Utilize the method for the dry fermented cordyceps sinensis mycelia of said system specifically to comprise the following steps:
A. after the Cordyceps fermented liquid of fermentation ends being dewatered by vacuum-type drum filter, making the mycelium water content obtaining is 65%;
B. the mycelium after dehydration being conveyed into double screw banded extruder granulates; This double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm, rotating speed 30-120rpm, temperature range 30-45 ℃, obtains mycelium micropill diameter 1-2 millimeter; Wherein, motor power (output) 18.5kw, output is 300-600kg/h;
C. the mycelium after granulating is transported in vibrated fluidized bed and is dried wherein, one section of EAT of vibrated fluidized bed is 110-120 ℃, blower fan frequency is 45-50 hertz, through 5-8 minute, enter two-stage drying, two sections of EATs are 70-80 ℃, through 10-15 minute, ferment cordyceps sinensis mycelium moisture is 5-8%, enters three sections and is dried; Three sections of EATs are 10-25 ℃, through 10-15 minute, and discharging.
Specifically, wherein said vacuum-type drum filter main frame doctor blade system Frequency Converter Control, autofeed discharging.The material of main frame and material contact portion is 316L.Main frame transmission system is that secondary gear slows down, and is controlled by AC converter stepless speed regulation.Filter area 30m, roller diameter 2600mm, rotary drum width 3750mm, rotary drum rotating speed 0.1~0.7r/min, stirs number of times 18/min, and transmission power 4kW stirs 4kW, appearance and size 5410 * 4080 * 3500 (L * W * H) mm, weight 9395kg
Wherein said twin-screw granulator, the twin-screw of kneading type in the same way screw diameter 120mm, rotating speed 0-120rpm, motor power (output) 18.5kw; temperature range 0-60 ℃, output is 300-600kg/h, has cooling jacket to reduce temperature; Horizontal speed-reducer, 45Kw, extruder head is made by corrosion resistant plate.Double screw banded extruder double screw banded extruder is granulated to fermented cordyceps sinensis mycelia, and the ferment cordyceps sinensis micropill of the ferment cordyceps sinensis mycelium diameter 1-2 millimeter after granulation, is transferred to vibrated fluidized bed, is dried.
Wherein said Vibratingfluidbeddrier vibrating motor drives material advance and seethe with excitement, and air blast and air-introduced machine integration of operation keep goods fluid dry, cyclone dust collecting system, continuous feed, continuous discharge, vibrating motor 2.2KW, air-introduced machine 11KW, air blast 5.5KW.
Adopt double screw banded extruder double screw banded extruder to granulate, make micropill, be conducive to follow-up dry; With adopt the modes such as baking oven or bipyramid be dry and compare, adopt three sections of drying modes of vibrated fluidized bed, high material temperature is no more than 60 ℃, temperature is lower, hot blast and material directly carry out the exchange of moisture and heat simultaneously, obviously shorten drying time, and drying efficiency is higher, can keep to greatest extent the nutritional labeling of material.Main component mannitol content improves 3-5%.
The Cordyceps fermented liquid that the present invention uses can prepare by the following method: bacterial strain is transferred to 26~28 ℃ of cellar cultures of slant medium 7 days, obtains the Cordyceps strain of activation; The Cordyceps strain having activated is inoculated in to seed culture medium, wherein seed culture medium consists of glucose 6%, dusty yeast 4%, peptone 5%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, 26~28 ℃ of shaken cultivation obtain Cordyceps sinensis primary seed solution for 3 days; Primary seed solution is accessed to secondary seed medium, wherein secondary seed medium consists of glucose 4%, dusty yeast 4%, peptone 4%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, cultivate 3 days for 26~28 ℃, inoculum concentration 1%, 1: 0.4~0.8vvm ventilates; Secondary seed medium is accessed to fermentation medium, and wherein fermentation medium consists of glucose 3%, dusty yeast 4%, peptone 4%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, cultivates 4 days inoculum concentration 3% for 26~28 ℃, 1: the 0.3~0.5vvm that ventilates, fermentation ends is Cordyceps fermented liquid zymotic fluid.
Beneficial effect of the present invention compared with the prior art: method of the present invention has the advantages that drying time is short, baking temperature is low, energy consumption is less, just because of these features, utilize twin-screw granulation and vibrated fluidized bed syllogic drying means can reach the object of enhancing productivity, reducing energy consumption, improve the quality of products.
Accompanying drawing explanation
Fig. 1 is the drying system of fermented cordyceps sinensis mycelia.
In figure, 1 is vacuum-type drum filter; 2 is double screw banded extruder; 3 is vibrated fluidized bed; 4 is belt conveyor; 5 is cyclone separator; 6 for forcing charger; 7 is conveying worm; 8 is air-introduced machine; 9 is silencer.
The specific embodiment
Below in conjunction with embodiment, the present invention is further illustrated, and following this enforcement is only for the present invention is described, and to not restriction of the present invention.
The drying system of fermented cordyceps sinensis mycelia as described in Fig. 1 of the present invention, this system comprises vacuum-type drum filter 1, double screw banded extruder 2 and vibrated fluidized bed 3, the discharging opening of double screw banded extruder 2 connects the charging aperture of vibrated fluidized bed 3 by belt conveyor 4.The discharging opening of vibrated fluidized bed 3 connects the charging aperture of cyclone separator 5.The air inlet of cyclone separator 5 connects air-introduced machine 8, between cyclone separator 5 and air-introduced machine 8, can also be connected silencer 9.The charging aperture of double screw banded extruder 2 connects the discharging opening of forcing charger 6.Force the charging aperture of charger 6 to connect conveying worm 7.
Use the method for the dry Cordyceps fermented liquid of said system as follows:
Embodiment 1:
By 7 tons of the Cordyceps fermented liquids of fermentation ends, after dewatering by vacuum drum, centrifugal clear liquid is as his use, and mycelium water content is 65%, utilizes double screw banded extruder double screw banded extruder to carry out mycelium granulation.This double screw banded extruder double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm, rotating speed 120rpm, motor power (output) 18.5kw, 40 ℃ of temperature ranges, output is 600kg/h, micropill diameter 1-2 millimeter is transferred in vibrated fluidized bed dry.Wherein one section of EAT of vibrated fluidized bed is 120 ℃, and blower fan frequency is 50 hertz, through 5 minutes, enters two-stage drying, and two sections of EATs are 80 ℃, and through 10 minutes, ferment cordyceps sinensis mycelium moisture was 5%, enters three sections and is dried; Three sections of EATs are 25 ℃, through 10 minutes, and discharging.Product meets company standard WS
1c
1-0001-95 (Z), the mycelium color after oven dry and bright mycelium solid colour, glossy, and dried mycelium do not lump, and do not turn black; The content of sweet mellow wine is 10.1%, and adenosine is 0.24%
Embodiment 2:
By 40 tons of the Cordyceps fermented liquids of fermentation ends, after dewatering by vacuum drum, centrifugal clear liquid is as his use, and mycelium water content is 60%, utilizes double screw banded extruder double screw banded extruder to carry out mycelium granulation.This double screw banded extruder double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm, rotating speed 30rpm, motor power (output) 18.5kw, 30 ℃ of temperature, output is 350kg/h, micropill diameter 1-2 millimeter is transferred in vibrated fluidized bed dry.Wherein one section of EAT of vibrated fluidized bed is 120 ℃, and blower fan frequency is 50 hertz, through 5 minutes, enters two-stage drying, and two sections of EATs are 80 ℃, and through 10 minutes, ferment cordyceps sinensis mycelium moisture was 5%, enters three sections and is dried; Three sections of EATs are 25 ℃, through 10 minutes, and discharging.Product meets company standard WS
1c
1-0001-95 (Z), makes mycelium color and bright mycelium solid colour after drying, glossy, and dried mycelium do not lump, and does not turn black; The content of sweet mellow wine is 10.5%, and adenosine is 0.26%
Embodiment 3:
By 40 tons of the Cordyceps fermented liquids of fermentation ends, after dewatering by vacuum drum, centrifugal clear liquid is as his use, and mycelium water content is 65%, utilizes double screw banded extruder double screw banded extruder to carry out mycelium granulation.This double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm, rotating speed 60rpm, motor power (output) 18.5kw, 35 ℃ of temperature ranges, output is 450kg/h, micropill diameter 1-2 millimeter is transferred in vibrated fluidized bed dry.Wherein one section of EAT of vibrated fluidized bed is 120 ℃, and blower fan frequency is 50 hertz, through 5 minutes, enters two-stage drying, and two sections of EATs are 80 ℃, and through 10 minutes, ferment cordyceps sinensis mycelium moisture was 5%, enters three sections and is dried; Three sections of EATs are 25 ℃, through 10 minutes, and discharging.Product meets company standard WS
1c
1-0001-95 (Z), the mycelium color after oven dry and bright mycelium solid colour, glossy, and dried mycelium do not lump, and do not turn black; The content of sweet mellow wine is 10.0%, and adenosine is 0.22%.
Embodiment 4:
By 40 tons of the Cordyceps fermented liquids of fermentation ends, after dewatering by vacuum drum, centrifugal clear liquid is as his use, and mycelium water content is 65%, utilizes double screw banded extruder to carry out mycelium granulation.This double screw banded extruder kneading type in the same way twin-screw screw diameter 120mm, rotating speed 90rpm, motor power (output) 18.5kw, 45 ℃ of temperature ranges, output is 500kg/h, micropill diameter 1-2 millimeter is transferred in vibrated fluidized bed dry.Wherein one section of EAT of vibrated fluidized bed is 120 ℃, and blower fan frequency is 50 hertz, through 8 minutes, enters two-stage drying, and two sections of EATs are 70 ℃, and through 15 minutes, ferment cordyceps sinensis mycelium moisture was 5%, enters three sections and is dried; Three sections of EATs are 20 ℃, through 15 minutes, and discharging.Product meets company standard WS
1c
1-0001-95 (Z), the mycelium color after oven dry and bright mycelium solid colour, glossy, and dried mycelium do not lump, and do not turn black; The content of sweet mellow wine is 10.9%, and adenosine is 0.28%.
Cordyceps fermented liquid zymotic fluid method in above-described embodiment: Cordyceps strain is transferred to 26~28 ℃ of cellar cultures of slant medium 7 days, obtains the Cordyceps strain of activation; The Cordyceps strain having activated is inoculated in to seed culture medium, wherein seed culture medium consists of glucose 6%, dusty yeast 4%, peptone 5%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, 26~28 ℃ of shaken cultivation obtain Cordyceps sinensis primary seed solution for 3 days; Primary seed solution is accessed to secondary seed medium, wherein secondary seed medium consists of glucose 4%, dusty yeast 4%, peptone 4%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, cultivate 3 days for 26~28 ℃, inoculum concentration 1%, 1: 0.4~0.8vvm ventilates; Secondary seed medium is accessed to fermentation medium, and wherein fermentation medium consists of glucose 3%, dusty yeast 4%, peptone 4%, potassium dihydrogen phosphate 0.2%, magnesium sulfate 0.02%, defoamer 0.1%, water preparation, pH value nature, cultivates 4 days inoculum concentration 3% for 26~28 ℃, 1: the 0.3~0.5vvm that ventilates, fermentation ends is Cordyceps fermented liquid zymotic fluid.
In above-described embodiment, mannitol content detection method is as follows:
Instrument: U.S. An Jielun company 1100 high performance liquid chromatographs, apparatus,Soxhlet's, centrifuge.
Material: sweet mellow wine (top grade is pure), tetraethyl iodate amine (analyzing pure), purified water.
Analysis condition: analytical column is anti-phase C
18post; Mobile phase is deionized water-50nmol/L tetraethyl iodate amine aqueous solution; Flow velocity is 0.6mL/min; Column temperature is room temperature; Sample size is 20 microlitres.
Sample preparation: get cordyceps sinensis mycelium powder end 0.4182g, put into apparatus,Soxhlet's, add people 80ml water, heating water bath 2h, takes out 10ml and add in centrifuge tube, and the centrifugal 5min of speed with 1000r/min, gets supernatant.After processing with chromatogram pretreatment pillar, being diluted with water to mass concentration is 1.94mg/ml, draws 20 microlitre sample introductions, carries out chromatography.