Method for preparing bananas powder with good recovery properties of water and non-agglomeration
Technical Field The present invention relates to the preparation of banana flour, in particular to a non-caking water method for preparing banana flour. Background Art Banana flesh soft texture, fragrant, is a kind of fruit very high nutritive value. According to analysis, in 100 grams in banana pulp containing 78 grams of water, 0.25 mg of carotene, 0.02 mg of vitamin B, 6 mg of vitamin C, 1.2 grams of protein, 0.6 gram place fat, 20 grams of carbohydrate, 10 mg of calcium, 35 mg of phosphorus, 0.8 mg of iron and 472 mg of potassium, also contains a trace of vitamin B2, vitamin B5, sodium, zinc and the like material needed by human body. Self -2001 years, banana marketing price is lower, once the acquisition per kg 0.2 yuans of the following. My banana in increased year by year, 2004 total yield breakthrough in banana in 600 million tons, accounting for the southern China the total production of the fruit and 47%, the average yield per mu of banana 4000-5000 katis, banana plant to promote local agricultural economic development, the realization of agricultural synergistic, peasants play an important role. Currently, deep processing backwardness of banana, 80% or more is in the market of fresh fruit, banana is a jump metatypic fruit, is easily spoiled, the circulation and storage there will be a large loss in the process. Banana deep processing product is monotonic, moreover, the present processing method for the banana is difficult to maintain the majority of the original color and flavor, affect the market development. Banana deep processing backward the main reason is the traditional processing method is difficult to ensure the quality of the product, color protection, and to maintain the natural flavor of the enzyme the key technology is still substantial progress has been achieved, the lack of deskin and series of processing technology and equipment. Therefore, new technology banana of the study, the development of new industrial production of the products is very important, in industrial production, research banana nutritional properties should be fully utilized, functional characteristic, comprehensive utilization of the banana, my banana products in order to enhance the competitiveness of the International market, accelerate the pace of development of the banana industry, will produce enormous economic and social benefits, the banana industry has broad prospects for the development of sustained and healthy development and can be. Banana flour in recent years is the emergence of new products International, its nutritious, convenient to eat, so called "plant milk powder". Abroad freezing and usually by the vacuum low-temperature drying method for drying the meat of banana, re-grinding pulverized. By adoption of the processing process not only the apparatus is expensive, and the output is low, energy consumption is large. As the banana flour using spray-drying process, and the processing cost is low, the product quality is good. Patent number 02100338.6 of the Chinese invention Patent discloses a "technological process of producing banana powder", spray drying method for the production of pure banana powder, enzyme heat banana pulp, color protection, high-speed shearing emulsifying, secondary homogeneous, high pressure spray drying, drying by high-pressure spraying, fixed fluidized bed, vibrating fluidized bed are sequentially completed. However, there is no discloses banana in processing method, the banana contains about 1-3% of pectin substance, if there are no obtain good processing, the effect of the spray will be affected, and to increase the difficulty of spraying, spray or even impossible, even if the spray, the banana flour is also very easy to caking, poor rehydration, the technology in the spray process, no dehumidifying air cooling banana flour is disclosed, there is no clear way of packing, packing and packing the environmental conditions of the air humidity. Content of the invention The purpose of the invention is to solve the above-mentioned the shortcomings of the prior art, provides a complex aqueous good no caking of the method for preparing banana flour. The purpose of this invention is realized through the following technical scheme. A complex aqueous is caking banana powder preparation method, comprising the following steps and process conditions: 1st step the banana deskin, flesh immediately put into 1.00%-1.25 wt % sodium bisulfite solution to immerse 5-10 min, then in the 90-100 the [...] in [...] 10 min, water feed ratio for the 1 [...] the 1-3 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step banana banana pulp quality can 0.20-0.50% and VC of 0.20-0.50% of citric acid, adjusted to pH 3.0-4.5, to rise to the 50-60 the [...][...] , the quality of the banana pulp for 0.1-0.3% controllable zymohydrolysis pectase 20-30 minutes, after the 90-95 the [...][...] thermal insulation 20 minutes; 3rd step after the zymohydrolysis banana, banana meat quality 5.0-11.5% of corn starch, 1.0-3.0% of the β-cyclodextrin, 2.0-6.0% of powdered sugar, and 1.0-2.0 times the banana heavy water, to carry out secondary homogeneous, level for the homogenization pressure 18 MPa -25 MPa, secondary homogenization pressure is 1.8 MPa -2.5 MPa; 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 the [...][...] , outlet air temperature the 80-85 the [...][...] , the feed pressure is 8 MPa -15 MPa, using 50-60% of dehumidifying and air cooling to about 40 the [...] ; 5th step immediately after cooling is to the banana flour aluminum-plastic packing, sterile drying air humidity is not higher than 20%, the packing shop environment humidity keep in 45-60%. The color of the processing solution is sodium bisulfite solution, concentration is preferably 1.20 wt %. The added amount of citric acid and VC respectively the quality of the banana pulp is preferably 0.3-0.4% and 0.3-0.4%. The controllable zymohydrolysis preferably pectase zymohydrolysis 30 minutes, preferably the dosage of the quality of the banana pulp 0.2-0.3%. The spray drying is the pressure of the air intake temperature is preferably the 160-175 the [...][...] , the air outlet temperature is preferably the 85 [...] , the feed pressure is preferably 10 MPa -15 MPa, preferably 50-60% of dehumidifying and air cooling to about 40 the [...]. The banana powder immediately after cooling of the plastic package is used for the cooling flow racking machine banana powder carried out immediately after the aluminum-plastic packing. Compared with the prior art, the present invention, has the following advantages and beneficial effects: (1) color of this invention deal with chemical and physical two kinds of method, the color effect is very good, the banana flour in the preparation process, not browned, white color, a banana inherent aroma. the aluminum models the bag good air tightness of the banana powders can be prevented, not transparent can prevent the banana flour the aluminum models the bag brownstain of the visible light, the inherent color of the banana flour. (2) controllable of the present invention in treatment of the pectin zymohydrolysis banana, less with enzyme quantity , short hydrolysis time, ensures the effective of spray drying. (3) in the spray drying process of this invention, using 50-60% spray after the dehumidification air to the banana flour cooling to about 40 the [...] , the humidity is 45-60% in the environment, airflow packaging machine for plastic packing, the aseptic for flow racking machine the humidity of the dry air should not be higher than 20%, the banana powder absorption of moisture small. (4) banana powder prepared according to the present invention do not are advised to caking, rehydration is very good. In the process of the spray of the present invention increase the cold drying dehumidification of the banana powder rapid cooling to avoid caking, banana powder after cooling airflow racking machine immediately proceed to the aluminum-plastic packing. Mode of execution For a better understanding of the invention, with the the embodiment of the present invention is used as described further in detail, but the present invention is not limited to the scope of protection the scope of the said embodiment. Embodiment 1 1st step the banana deskin, flesh immediately put into 1.00% sodium bisulfite solution soaked in 10 min, then in the 90-100 the [...] in [...] 10 min, water feed ratio for the 1 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.2% VC of, 0.3% citric acid solution to adjust the pH to 4.0, to rise to the 55 [...] , the quality of the banana pulp for 0.1% controllable zymohydrolysis pectase 30 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added 5.0% of corn starch, 3.0% β-cyclodextrin, 5.7% of powdered sugar, and 1.75 times of water, to carry out secondary homogeneous, level for the homogenization pressure 18 MPa, secondary homogenization pressure is 2.0 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, using 50% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 20%, packing shop keep in the environmental humidity of 45%. Embodiment 2 1st step the banana deskin, flesh immediately put into 1.25% sodium bisulfite solution soaked in 5 min, then at 90 the insulating [...] 10 min, water feed ratio for the 2 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.4% VC, 0.2% citric acid adjusted to pH 4.0, to rise to the 45 [...] , the quality of the banana pulp for 0.3% controllable zymohydrolysis pectase 20 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added 10% corn starch and 1.0% of the β-cyclodextrin, 5.7% of powdered sugar, and 1.75 times of water, to carry out secondary homogeneous, level for the homogenization pressure 20 MPa, secondary homogenization pressure is 2.0 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, using 50% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 18%, packing shop keep in the environmental humidity of 50%. Embodiment 3 1st step the banana deskin, flesh immediately put into 1.00% sodium bisulfite solution soaked in 10 min, then in 90 the insulating [...] 10 min, water feed ratio for the 2 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.50% VC, 0 . 20% citric acid adjusted to pH 4.5, the temperature is increased to 50 the [...] , for the quality of the banana pulp 0.2% controllable zymohydrolysis pectase 25 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added 6.0% corn starch and of 2.5% of the β-cyclodextrin, 3.0% of powdered sugar, and 1.5 times of water, to carry out secondary homogeneous, level for the homogenization pressure 20 MPa, secondary homogenization pressure to 20 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, using 50-60% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 20%, packing shop keep in the environmental humidity of 50%. Embodiment 4 1st step the banana deskin, flesh immediately put into 1.25% sodium bisulfite solution soaked in 10 min, then at 95 the insulating [...] 10 min, water feed ratio for the 2 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.30% VC, 0 . 30% citric acid adjusted to pH 4.0, to rise to the 45 [...] , the quality of the banana pulp for 0.15% controllable zymohydrolysis pectase 30 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added 7.0% corn starch and 2.8% of the β-cyclodextrin, 3.0% of powdered sugar, and 1.5 times of water, to carry out secondary homogeneous, level for the homogenization pressure 18-25MPa, two-stage homogenization pressure is 1.8-2.5 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, using 60% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 20%, packing shop keep in the environmental humidity of 60%. Embodiment 5 1st step the banana deskin, flesh immediately put into 1.25% sodium bisulfite solution soaked in 10 min, then in 90 the insulating [...] 10 min, water feed ratio for the 2 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.25% VC, 0 . 20% citric acid adjusted to pH 4.5, to rise to the 45 [...] , the banana pulp quality 0.25% controllable zymohydrolysis pectase 28 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added to 8.0% of corn starch and 1.5% β-cyclodextrin, 3.0% of powdered sugar, and 1.5 times of water, to carry out secondary homogeneous, level for the homogenization pressure 18 MPa, secondary homogenization pressure is 2.0 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, with 55% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 20%, packing shop keep in the environmental humidity of 50%. Embodiment 6 1st step the banana deskin, flesh immediately put into 1.25% sodium bisulfite solution soaked in 10 min, then in 90 the insulating [...] 10 min, water feed ratio for the 2 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step to the banana can the quality of the meat of banana 0.40% VC, 0 . 25% citric acid adjusted to pH 3.8, to rise to the 45 [...] , the quality of the banana pulp for 0.3% controllable zymohydrolysis pectase 20 minutes, and the 95 [...] thermal insulation 10 minutes; 3rd step after the zymohydrolysis banana, banana meat weighing of added 9.0% corn starch and of 1.5% β-cyclodextrin, 5.0% of powdered sugar, and 1.0 times of water, to carry out secondary homogeneous, level for the homogenization pressure 18 MPa, secondary homogenization pressure is 2.0 MPa. 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 [...] , outlet air temperature the 80-85 [...] , the feed pressure is 8 MPa -15 MPa, using 50% of dehumidifying and air cooling to about 40 the [...]. 5th step after used for the cooling flow racking machine banana powder immediately proceed to the aluminum-plastic packing, the flow racking machine the aseptic of dry air for humidity is 20%, packing shop keep in the environmental humidity of 50%. Banana pulp containing pectin, cellulose, cyclodextrin and a small amount of starch and other substances, pectin in fruit juice agglutionation material of cellulose, hemicellulose, protein, starch, dextrin, etc. to form a colloid suspension, the viscosity becomes larger, is not easy to spray, pectase use by the invention can be decomposed into the pectin galactose halfaldehyde and pectic acid , thus is favorable to the carrying out of spraying, the production efficiency is improved. In the process of the spray and increasing drying the dehydrated cold of the banana flour after the rapid cooling, after the cooling air flow for banana flour machine immediately proceed to the aluminum-plastic packing. Using 50-60% spray after the dehumidification air to the banana flour cooling to about 40 the [...] , the humidity is 45-60% in the environment, airflow packaging machine for plastic packing, the aseptic for flow racking machine the humidity of the dry air should not be higher than 20%, the banana powder absorption of moisture small. Banana powder prepared according to the present invention do not are advised to caking, rehydration is very good. The patent refers to the field of 'foods, foodstuffs, or non-alcoholic beverages; preserving food or foodstuff in general'. The invention discloses a preparation method of banana powder with good rehydration characteristic and being not easy to agglomerate. The method makes banana flesh into the banana powder through procedures of color protection, thermal sterilization, controllable enzymatic hydrolysis technology, preparation, high speed shearing emulsification, secondary homogenization, high pressure spraying and drying, package with air-flow racking machine, and so on. Color protection with sodium bisulfite solution is carried out to the banana promptly after being peeled off skin, sterilization is made with hot water, then preparation is made by adding into VC, citric acid and water based on proportion, jordaning is carried out with a colloid mill after pulping, enzymatic hydrolysis is carried out with pectase, amylum, Beta-cyclodextrine, powdered sugar and water are carried out for a secondary preparation and a secondary homogenization, finally the banana powder is sprayed, dried and packed with aluminum-plastic promptly after being cooled. During the preparation process of the banana powder, no other filling agent is added except color protection agent and dispersant. The banana powder is characterized by good color, fluidity and rehydration characteristic, being easy to be stored and transported, etc. 1. A complex aqueous is caking banana powder preparation method, which is characterized by comprising the following steps and process conditions: 1st step the banana deskin, flesh immediately put into 1.00%-1.25 wt % sodium bisulfite solution to immerse 5-10 min, then in the 90-100 the [...] in [...] 10 min, water feed ratio for the 1 [...] the 1-3 [...] 1, rapid cooling to room temperature, with high pressure shearing type emulsifying machine stirring fine; 2nd step banana banana pulp quality can 0.20-0.50% and VC of 0.20-0.50% of citric acid, adjusted to pH 3.0-4.5, to rise to the 50-60 the [...][...] , the quality of the banana pulp for 0.1-0.3% controllable zymohydrolysis pectase 20-30 minutes, after the 90-95 the [...][...] thermal insulation 20 minutes; 3rd step after the zymohydrolysis banana, banana meat quality 5.0-11.5% of corn starch, 1.0-3.0% of the β-cyclodextrin, 2.0-6.0% of powdered sugar, and 1.0-2.0 times the banana heavy water, to carry out secondary homogeneous, level for the homogenization pressure 18 MPa -25 MPa, secondary homogenization pressure is 1.8 MPa -2.5 MPa; 4th step of the banana juice of homogenized pressure spray drying, the temperature of inlet air to the 150-180 the [...][...] , outlet air temperature the 80-85 the [...][...] , the feed pressure is 8 MPa -15 MPa, using 50-60% of dehumidifying and air cooling to about 40 the [...] ; 5th step immediately after cooling is to the banana flour aluminum-plastic packing, sterile drying air humidity is not higher than 20%, the packing shop environment humidity keep in 45-60%. 2. Complex aqueous is agglomeration method for preparing banana flour according to Claim 1, characterized in that the color of the processing solution is sodium bisulfite solution, concentration is 1.20 wt %. 3. Complex aqueous is agglomeration method for preparing banana flour according to Claim 1, characterized in that the added amount of citric acid and VC to the quality of the banana pulp 0.3-0.4% and 0.3-0.4%. 4. Complex aqueous is agglomeration method for preparing banana flour according to Claim 1, characterized in that the controllable zymohydrolysis zymohydrolysis pectase for 30 minutes, the amount of the quality of the banana pulp 0.2-0.3%. 5. Complex aqueous is agglomeration method for preparing banana flour according to Claim 1, characterized in that the spray-drying is the pressure of the inlet air temperature is 160 the the [...] -175 [...] , outlet air temperature the 85 [...] , the feed pressure is 10 MPa -15 MPa, using 50-60% of dehumidifying and air cooling to about 40 the [...]. 6. Complex aqueous is agglomeration method for preparing banana flour according to Claim 1, characterized in that the banana powder immediately after cooling of the plastic package is used for the cooling flow racking machine banana powder carried out immediately after the aluminum-plastic packing.