CN101558888A - Preparation method of dietary fibers from peanuts - Google Patents

Abstract

The invention relates to a preparation method of dietary fibers from peanuts, which comprises the following steps: wet peanut residues are taken as raw materials and proper amount of process water and accessories are added to prepare peanut residue pulps through hardening and tempering process; under certain conditions of temperature, time and environment, the peanut residue pulps respectively pass through various procedures to undergo chemical reaction and processing; the peanut residue pulps pass through a filter pressing procedure and are prepared into filter cakes with thickness of 20-40mm; the filter cakes are subjected to flash drying process and the dried filter cakes have moisture content of 15-20%; the filter cakes are broken up and are coarsely ground by flour mills to uniform powder; the powder is sterilized by microwave sterilizers and then is conveyed to a super micron mill for micronization to prepare the dietary fibers from peanuts; the dietary fibers have protein content more than or equal to 35%, moisture content less than or equal to 12%, ash content less than or equal to 6%, total content of dietary fibers more than or equal to 60%, water-holding capacity more than or equal to 20%, swelling coefficient more than or equal to 13ml/g and fineness of 100-380 meshes. The dietary fibers from peanuts can fully extract the nutritions in the peanut residues and have good quality, wide application, high added-value of products, high production efficiency, low production cost and good economic benefits.

Description

One preparation method who cultivates peanut dietary fiber

Technical field

The present invention relates to foods processing technique, relate in particular to peanut byproduct deep process technology.

Background technology

Peanut has long plant utilization history as a kind of traditional oil crops in China, and the peanut yield of China occupy prostatitis, the world.Because the peanut purposes is many, taste is fragrant, nutritious, peanut and goods thereof become the popular food that welcome by the people for a long time.(Groundnut products) is increasing, and various (Groundnut products) all can produce byproduct---peanut dregs after processing.Because the factor that mouthfeel, local flavor, nutritive value etc. decline to a great extent, the people just can't eat any more, how as feed or fertilizer.In order to utilize the residue nutritive value of peanut dregs better, the producer that produces dietary fibre is abroad arranged, because complex process, cost is higher, and functional not obvious, and being used for intestines class and meat product has peculiar smell slightly, rough, influence is edible, so purposes is not extensive, fails the large tracts of land utilization and extention.

Summary of the invention

Purpose of the present invention just provides a kind of technology of utilizing peanut dregs to make dietary fiber, fully extracts the nutritional labeling in the peanut dregs, guarantee the manufactured goods quality, health, safety are enhanced productivity, reduce cost of manufacture, enlarge purposes, increase economic efficiency.

Task of the present invention is finished like this: the preparation method that dietary fiber is cultivated peanut in research one, make raw material with wet peanut dregs, be equipped with an amount of auxiliary material and fresh water (FW), technical process through modified operation, make the peanut dregs slurry, pass through press filtration again, expansion drying, corase grind, microwave disinfection, the technical process of each operation of ultramicro grinding, in certain temperature, under time and the environmental condition, carry out chemical reaction and processing processing respectively, make protein content 〉=35%, moisture≤12%, ash content≤6%, total dietary fiber content 〉=60%, retention ability 〉=20%, the peanut dietary fiber of swelling coefficient 〉=13ml/g is packed through packaging process then.Auxiliary material is food grade hydrochloric acid, NaOH, hydrogen peroxide.The technical process of modified operation is: the peanut dregs that will wet adds modified jar, ratio in material-water ratio 1: 2～3 adds 80～95 ℃ of fresh water (FW)s, fully mixes and stirs, and makes the peanut dregs slurry of moisture content 90～95%, add food grade hydrochloric acid again, regulate pH value 4.5～6, kept 80～85 ℃ of temperature 1～2 hour, add NaOH then, regulate pH value 8.0～9.0, add hydrogen peroxide again, consumption is 15～30L/t dry, reacts to change the press filtration operation over to after 1～2 hour.The technical process of press filtration operation is: elder generation squeezes into the peanut dregs slurry that modulates in the modified jar in the head tank and stores, add filter press again and carry out press filtration, filter press operating pressure 0.3～1.0MPa, 40～90 ℃ of operating temperatures, filter cake after pressure filtration moisture content 55～60%, filter cake thickness are 20～40mm.The technical process of expansion drying operation is: filter cake is sent into flash dryer and is carried out drying, and the air intake machine is sent into 150～200 ℃ of hot blast temperatures, 50～90 ℃ of temperature of outgoing airs, dried filter cake moisture content 15～30%.The technical process of corase grind operation is: dried filter cake is smashed, roughly ground by flour mill, form even broken end.The technical process of microwave disinfection operation is: sterilization is carried out by the microwave disinfection device in the broken end of the filter cake after the corase grind, and temperature is 110～130 ℃, and the time is 15～30 minutes, the moisture at the broken end of filter cake≤15% after the sterilization.The technical process of ultramicro grinding operation is: micronizer is sent at the broken end of the filter cake after the sterilization, carried out ultramicro grinding, forming fineness is 100～380 purpose dry powder, promptly makes peanut dietary fiber finished product.The peanut food fibre powder of making according to above-mentioned technology, method is high protein, high dietary-fiber, and nutritious, color and luster is faint yellow, and free from extraneous odour can be used for field of food such as meat products, Flour product, beverage.

Adopt technical solution of the present invention; through evidence, production efficiency height of the present invention, cost of manufacture is low; can fully extract the nutritional labeling in the peanut dregs; the peanut dietary fiber quality of making is good, of many uses, the added value of product height; production process health, safety; the preparation method can adapt to the needs that scale is produced in batches, has improved economic and social benefits, has reached predetermined purpose preferably.

The specific embodiment

Further the present invention is illustrated below in conjunction with the specific embodiment.

Embodiment 1: the peanut dregs of getting moisture content 75% adds modified jar, adds 90 ℃ fresh water (FW) simultaneously, mixes and stirs, make the peanut dregs slurry of moisture content 90%, add concentration again and be 30% food grade hydrochloric acid, regulate pH value 5.0, keep 80 ℃ temperature one hour, the NaOH that adds 30% concentration is regulated pH value 8.0, adds hydrogen peroxide, consumption is the 15L/t dry, keep uniform state one hour, and squeezed in the head tank and store, enter the press filtration operation.The peanut dregs slurry is added filter press, operating pressure 0.5MPa, 50 ℃ of operating temperatures, filter cake after pressure filtration thickness 30mm, moisture content 55%.Filter cake after pressure filtration is sent into flash dryer, and EAT is 160 ℃ in the interior steaming drying machine, and temperature of outgoing air is 65 ℃ behind the expansion drying, dry back filter cake moisture content 20%.Then dried filter cake is sent into flour mill and roughly grind, form even broken end, send into the microwave disinfection device and carry out sterilization.The broken end of sterilization behind the transpiring moisture contains moisture 7%.Then micronizer is sent at the broken end of sterilization and carried out ultramicro grinding, rotating speed 2000r/min, classifying turbine rotating speed 1500r/min, making fineness is 200 purpose dry powder, is peanut dietary fiber finished product.Pack after the cooling.

Embodiment 2: the peanut dregs of getting moisture content 85% adds modified jar, adds temperature simultaneously and be 95 ℃ fresh water (FW), the peanut dregs slurry of furnishing moisture content 95%, add concentration again and be 30% food grade hydrochloric acid, regulate pH value 5.5, kept 85 ℃ of temperature 1 hour, the NaOH that adds 30% concentration, regulate pH value 9.0, add hydrogen peroxide, consumption 25L/t dry, keep squeezing into after one hour in the head tank and store, add filter press then, operating pressure 0.8MPa, 55 ℃ of operating temperatures.Filter cake after pressure filtration thickness 35mm, moisture content are 60%.Filter cake is sent into flash dryer, 165 ℃ of EATs, temperature of outgoing air is 70 ℃ behind the expansion drying, dry back filter cake moisture content 25%.Filter cake is added flour mill to be roughly ground, be milled to even broken end, add the microwave disinfection device and carry out sterilization, broken last moisture 10% after the sterilization, import micronizer then and carry out ultramicro grinding, adjust micronizer rotating speed 3000r/min, classifying turbine rotating speed 2000r/min, make the dry powder of 300 order fineness, promptly make peanut dietary fiber finished product.Cool off laggard luggage bag packing.

Process route of the present invention is reasonable, and the technical process of each operation connects closely, production efficiency height, the manufactured goods of production different fineness according to the actual requirements.Manufactured goods are little yellow, and free from extraneous odour is of high nutritive value, and purposes is wide, and manufactured goods added value height has higher utilization and extention to be worth.The present invention helps to prolong the (Groundnut products) product chain, enlarges (Groundnut products) deep processing range of application, can satisfy the demand of batch process, accomplishes scale production, and cost of manufacture is low, and is good in economic efficiency.

Claims (8)

1, one preparation method who cultivates peanut dietary fiber, it is characterized in that making raw material with wet peanut dregs, be equipped with an amount of auxiliary material and fresh water (FW), technical process through modified operation, make the peanut dregs slurry, pass through press filtration again, expansion drying, corase grind, microwave disinfection, the technical process of each operation of ultramicro grinding, in certain temperature, under time and the environmental condition, carry out chemical reaction and processing processing respectively, make protein content 〉=35%, moisture≤12%, ash content≤6%, total dietary fiber content 〉=60%, retention ability 〉=20%, the peanut food fibre powder of swelling coefficient 〉=13ml/g is packed through packaging process then.

2,, it is characterized in that said auxiliary material is food grade hydrochloric acid, NaOH, hydrogen peroxide according to the preparation method of the described peanut dietary fiber of claim 1.

3, preparation method according to the described peanut dietary fiber of claim 1, the technical process that it is characterized in that said modified operation is: the peanut dregs that will wet adds modified jar, ratio in material-water ratio 1: 2～3 adds 80～95 ℃ of fresh water (FW)s, fully mix and stir, make the peanut dregs slurry of moisture content 90～95%, add food grade hydrochloric acid again, regulate pH value 4.5～6, kept 80～85 ℃ of temperature 1～2 hour, add NaOH then, regulate pH value 8.0～9.0, add hydrogen peroxide again, consumption is 15～30L/t dry, reacts to change the press filtration operation over to after 1～2 hour.

4, according to the preparation method of the described peanut dietary fiber of claim 1, the technical process that it is characterized in that said press filtration operation is: elder generation squeezes into the peanut dregs slurry that modulates in the modified jar in the head tank and stores, add filter press again and carry out press filtration, filter press operating pressure 0.3～1.0MPa, 40～90 ℃ of operating temperatures, filter cake after pressure filtration moisture content 55～60%, filter cake thickness are 20～40mm.

5, according to the preparation method of the described peanut dietary fiber of claim 1, the technical process that it is characterized in that said expansion drying operation is: filter cake is sent into flash dryer and is carried out drying, the air intake machine is sent into 150～200 ℃ of hot blast temperatures, 50～90 ℃ of temperature of outgoing airs, dried filter cake moisture content 15～30%.

6, according to the preparation method of the described peanut dietary fiber of claim 1, it is characterized in that the technical process of said corase grind operation is: dried filter cake is smashed, roughly ground, form even broken end by flour mill.

7, according to the preparation method of the described peanut dietary fiber of claim 1, the technical process that it is characterized in that said microwave disinfection operation is: sterilization is carried out by the microwave disinfection device in the broken end of the filter cake after the corase grind, temperature is 110～130 ℃, time is 15～30 minutes, the moisture at the broken end of filter cake≤15% after the sterilization.

8, according to the preparation method of the described peanut dietary fiber of claim 1, the technical process that it is characterized in that said ultramicro grinding operation is: micronizer is sent at the broken end of the filter cake after the sterilization, carrying out ultramicro grinding grinds, forming fineness is 100～380 purpose dry powder, promptly makes peanut dietary fiber finished product.