CN108651916A

CN108651916A - A kind of half wet process konjak processing method

Info

Publication number: CN108651916A
Application number: CN201710238683.8A
Authority: CN
Inventors: 张志健; 卫永华; 郑红星
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2018-10-16

Abstract

A kind of half wet process konjak processing method.The invention belongs to agricultural byproducts processing technical fields, it is characterized in that after dry slice food made from Amorphophallus rivieri is crushed, use second of defibrination of a technical process produce clarification waste alcohol immersion is stirred to konjaku flour, then use each secondary defibrination of a technical process produce clarification waste alcohol the konjaku flour after immersion is ground, is detached, vacuum desolvation, drying, crushing and screening are carried out to the wet konjaku powder isolated and wet konjaku ashes again, obtain detoxification konjaku powder and detoxification konjaku ashes product.Konjaku powder and konjaku ashes are substantially remained without sulphur obtained by the method, and it is stripped of the toxic ingredient of the major part in konjaku, product safety health, the common konjaku powder of superfine or two level of its quality close to national Specification purify the requirement of konjaku powder, production equipment is simple, invest it is small, it is easy to operate, it is easy to implement；Production is not limited by konjaku production season.

Description

A kind of half wet process konjak processing method

Technical field

The invention belongs to agricultural byproducts processing technical fields, are related to a kind of half wet process konjak processing method.

Background technology

Konjaku processing mainly has two kinds of technologies of dry and wet.Dry method because technical maturity is high, difficulty is small, it is easy to operate, It builds and production cost is relatively low, it is widely used by enterprise.But from the point of view of the current condition of production, there is also as follows for dry production Disadvantage：(1) environmental is big：Konjaku skin slag, taro piece drying sulphuring process generate a large amount of sulphur-containing exhaust gas, the processing of fine powder product A large amount of dust etc. is generated in the process；(2) taro angle drying time, the period was long at 50 minutes or more, high energy consumption；(3) taro cutin amount is not Stablize：Slice thickness and drying box temperature distribution is non-uniform easily lead to taro piece dry and wet uneven, burnt piece rate, humidity strip rate and evil mind piece rate It is higher；(4) fine powder product quality is low：Purity is low, viscosity is small, sulphur residual quantity height etc.；(5) price is relatively low：Dry method fine powder 6 ~8 ten thousand yuan/ton (wet method fine powder 9~110,000 yuan/ton)；(6) products application range is smaller：It, can not be in medicine because fine powder purity is low Equal fields directly use；(7) produced byproduct " winged powder " cannot function as eating because containing the harmful substances such as higher alkaloid, sulphur Object or feed applications etc..Disadvantages described above affects the producing and selling of dry method konjaku powder and the development of industry.Wet method fine powder is because of tool There is the features such as quality is good, yield rate is high, and the scope of application is broad to be used department, especially food, pharmaceuticals industry by vast fine powder Favor.But current wet production technical maturity is relatively low, and technical difficulty is big, and corollary equipment is still not perfect, and builds and gives birth to It is higher (alcohol consumption, recovery technology difficulty are big and recycling energy consumption is larger) to produce cost, and fresh Amorphophallus rivieri not storage tolerance, causes wet The effective production period of method processing is short (most three months annual), some is made to hope the interested enterprise of Wet technique and halt.For The above situation, this seminar on the basis of early-stage study to fine powder dry and wet Analysis on Processing Technology by having carried out evil spirit Taro half wet process comprehensive processing technology is studied, and obtains good effect.Amorphophallus Resources utilization rate is improved using this technology, is reduced Waste discharge alleviates environmental pollution, improves product quality and safety, while can solve konjaku production and processing Seasonal contradiction.

Invention content

It is an object of the invention to overcome defect existing in the prior art, konjaku powder can effectively be reduced by providing one kind SO₂The content of the harmful substances such as naturally occurring alkaloid in residual and konjaku, and product quality and safe and healthy can be improved Property, non-environmental-pollution, the konjak processing method not influenced by konjaku production season.

Its specific technical solution is：What a kind of half wet process konjak processing method was realized in：Dry slice food made from Amorphophallus rivieri is crushed to About 40 mesh, use second of defibrination of a technical process produce clarification waste alcohol (a concentration of 45%~75%) stirs at 20~40 DEG C Mix 2~3h of immersion, solid-liquid ratio 1: 80~120；Material after immersion fine grinding wheel is ground into grinding 1, and in 250~500r/ Centrifuge 0.5~2min under min or stand 5~10min, isolate wet fine powder and ashes liquid, then by ashes liquid 3000~ 8~15min or press filtration are centrifuged under 5000r/min, isolate wet ashes and clarification waste alcohol；Then with similar method to separation The wet fine powder gone out is ground, detaches, except that：1. 1 is also only ground for the second time, and third and fourth and five grindings are each 2 are ground, and mill spacing is slightly smaller than first and second grinding；2. second and third, four times grinding respectively use a upper technical process Third and fourth, grind produced clarification waste alcohol for five times, the 5th grinding uses new alcohol；5th time is ground, is separating obtained wet Fine powder and each wet ashes of grinding gained carry out vacuum desolvation, (condition is for drying：0.07~0.09MPa of vacuum degree, temperature 50~ 90 DEG C), while recovered alcohol, also can first vacuum desolvation, then carry out drying or fluidized drying with 50~90 DEG C of hot winds or air-flow is done It is dry；Gained dry konjaku flour grinding wheel is milled again broken, is sieved to get finished product konjaku powder and konjaku ashes.

Compared with existing konjac flour processing technology, beneficial effects of the present invention are：

1, the SO of konjaku powder and konjaku ashes₂The toxic component content such as residual and alkaloid is greatly lowered, without stench Taste, product safety health, fine powder quality is close to national standard《Konjaku powder》(GB/T18104-2000) and agriculture ministerial standard 《Konjaku flour》(NY/T494-2010) requirement of common konjaku powder select quality as defined in and purifying konjaku powder seconds, such as evil spirit The full powder viscosity of taro is up to 17600mPas or more, Glucomannan content 66.30%.

2, production equipment is simple, and investment is small, easy to operate, easy to implement.

3, compared with wet processing techniques, production is not limited by konjaku production season.

Specific implementation mode

Technical scheme of the present invention is described in more detail with reference to specific embodiment.

Embodiment：

In powder 50g after the crushing of dry slice food made from Amorphophallus rivieri, about 60% alcohol of 500ml is added to seal, at 30 DEG C, 2.5h is impregnated in stirring, Then with fine grinding wheel mill grinding 1,1min is centrifuged in 300r/min；The wet fine powder isolated is added into about 62% alcohol of 500ml again Mill grinding 1 centrifuges 1min in 300r/min；The wet fine powder isolated is added into about 63% alcohol of 500ml mill grinding 2 again, 300r/min centrifuges 1min；The wet fine powder isolated is added into about 64% alcohol of 500ml mill grinding 2 again, is centrifuged in 300r/min 1min；The wet fine powder isolated is added into about 65% alcohol of 500ml mill grinding 2 again, 1min is centrifuged in 300r/min；Respectively will again The wet fine powder and ashes liquid isolated centrifuge 10min at 4000r/min, respectively wet fine powder, wet ashes and the useless wine of clarification Essence；By this wet fine powder and wet ashes, 60 mesh sieve, i.e. konjaku powder and evil spirit are crossed in dry about 45min, grinding in 60 DEG C of drying box Taro ashes product.Fine powder yield is 54.96%, viscosity 17650mPas, Glucomannan content 66.30%, SO₂It is not detected；Ash Powder yield is 26.12%, Glucomannan content 2.00%, SO₂Content 0.06g/kg, content of starch 49.58%, crude protein content 18.81%, fat content 0.18%.

The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention is without being limited thereto, it is any ripe Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical solution that can be become apparent to Altered or equivalence replacement are each fallen in protection scope of the present invention.

Claims

1. a kind of half wet process konjak processing method, it is characterised in that be to crush dry slice food made from Amorphophallus rivieri, after adding alcohol to impregnate, use repeatedly thin The grinding of grinding wheel mill, separation, then the wet fine powder of the konjaku isolated and wet ashes is dry, crush, screening, obtain detoxification konjaku powder and Detoxification konjaku ashes.

2. according to the method described in claim 1, it is characterized in that dry method slice food made from Amorphophallus rivieri is crushed to 40 mesh or so, it is by solid-liquid ratio 1: 80~120 produce clarification waste alcohol (a concentration of 45%~75%), at 20~40 DEG C plus second of grinding of a technical process 2~3h is impregnated in lower stirring.

3. according to the method described in claim 1, it is characterized in that by the material after immersion with fine grinding wheel grind grinding 1, and 0.5~2min is centrifuged under 250~500r/min or stands 5~10min, isolates wet fine powder and ashes liquid, then ashes liquid is existed 8~15min or press filtration are centrifuged under 3000~5000r/min, isolate wet ashes and clarification waste alcohol；Then with similar method The wet fine powder isolated is ground, is detached, except that：1. 1 is also only ground for the second time, and third and fourth and five times Each grinding 2, and mill spacing is slightly smaller than first and second grinding；2. second and third, four times grinding respectively use upper technique mistake Journey third and fourth, five the produced clarification waste alcohols of grinding (a concentration of 45%~75%), the 5th grinding uses a concentration of 45% ~75% new alcohol.

4. according to the method described in claim 1, it is characterized in that by the 5th grinding, separating obtained wet fine powder and each grinding The wet ashes of gained carries out vacuum desolvation, drying under the conditions of 0.07~0.09MPa of vacuum degree, 50~90 DEG C of temperature, recycles simultaneously Alcohol, or first vacuum desolvation, then carry out drying or fluidized drying or pneumatic conveying drying with 50~90 DEG C of hot winds；Dried object is distinguished again It is milled broken, is sieved to get finished product detoxification konjaku powder and detoxification konjaku ashes with grinding wheel.