CN103519297B - High-efficiency energy-saving processing method of sweet potato juice - Google Patents

High-efficiency energy-saving processing method of sweet potato juice Download PDF

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Publication number
CN103519297B
CN103519297B CN201310481950.6A CN201310481950A CN103519297B CN 103519297 B CN103519297 B CN 103519297B CN 201310481950 A CN201310481950 A CN 201310481950A CN 103519297 B CN103519297 B CN 103519297B
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sweet potato
juice
enzymolysis
sweet
potato juice
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CN103519297A (en
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王思新
冷传祝
孙雅君
李喜宏
李瑶瑶
姜南
宋新飞
张青山
刘莉
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Guotouzhonglu Fruit Juice Co., Ltd.
Rushan Zhongcheng fruit juice beverage Co., Ltd.
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GUOTOUZHONGLU FRUIT JUICE CO Ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
    • A23L2/02—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation containing fruit or vegetable juices
    • A23L2/04—Extraction of juices
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
    • A23L2/70—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter
    • A23L2/84—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter using microorganisms or biological material, e.g. enzymes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nutrition Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Zoology (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Preparation Of Fruits And Vegetables (AREA)

Abstract

The invention relates to a high-efficiency energy-saving processing method of a sweet potato juice, which comprises the following steps: peeling the raw material sweet potatoes, crushing, heating, and gelatinizing to obtain a sweet potato pulp, carrying out high-temperature enzymolysis on the sweet potato pulp, pressing the sweet potato pulp to obtain a sweet potato juice and peel trimmings, and carrying out after-treatment on the sweet potato juice to obtain the sweet potato juice finished product. The method is characterized in that the sweet potatoes are crushed and extruded, the extruded sweet potatoes are heated and gelatinized, and the extruded sweet potato juice is used as spray water in the pressing process; and wood fibers is mixed and added in the sweet potato pulp pressing process. According to the method, the sweet potatoes are directly extruded after being crushed, and the extruded sweet potato juice is used as spray water for gelatinization, so that no water is additionally added, thereby saving the time and energy consumption; and meanwhile, the wood fibers, which have smooth surface and have not burrs, are added in the sweet potato pressing process and can fully display the filtration action in the pressing process, so that the juice in the sweet potato trimmings can be sufficiently extruded, thereby enhancing the juice yield of the sweet potato trimmings.

Description

The processing method of energy-efficient sweet potato juice
Technical field
The invention belongs to juice extracting method field, especially a kind of processing method of energy-efficient sweet potato juice.
Background technology
Conventional hot-press squeezes formula sweet potato juice production technology: adopt new fresh sweet potatoes to be raw material, through process formation slurries such as peeling, fragmentation, high temperature gelatinizations, then obtains potato through processes such as squeezing, saccharification and starches, more after filtration etc. process obtains finished product potato juice.Ipomoea batatas squeeze time can isolate skin slag, general skin slag content up to 40% ~ 55%, wherein, because containing the impurity such as a certain amount of starch, pectin, pigment, usually be only used as fertilizer in prior art, part is used as feed through process, does not make full use of active ingredient wherein.
Current Ipomoea batatas squeezing juice is all the sweet potato juice produced after single pressing through Ipomoea batatas, the pol scope of sweet potato juice is comparatively fixing, if raising pol, generally only has the object being reached by existing sweet potato juice and improve pol, but this fundamentally can not solve the problem that sweet potato juice improves pol, needs to reform existing production method.
Through retrieval, the method that existing patent relates to all not have for how improving sweet potato juice pol to improve, the existing production of sweet potato juice relating generally to high microsteping, high protein content, and different from the object of this patent, means are different, the effect difference obtained.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of processing method of energy-efficient sweet potato juice, this method makes directly to extrude in Ipomoea batatas fragmentation, and the shower water that the sweet potato juice gone out of extruding as gelatinization is is used, additionally do not adding water, saving time and energy consumption; Ipomoea batatas squeezing adds wood-fibred more simultaneously, and wood-fibred smooth surface, does not have burr, can give full play to filtration, fully extruded by the fruit juice in potato slag in squeezing, improves the crushing juice rate of potato slag.
The technical scheme that the present invention realizes object is as follows:
A kind of processing method of energy-efficient sweet potato juice, comprise and obtain potato slurry by after raw material sweet potato peeling, fragmentation, Heat Gelatinization, potato slurry carries out high temperature enzymolysis, the squeezing of potato slurry is carried out after enzymolysis, obtain sweet potato juice and skin slag after squeezing, sweet potato juice obtains sweet potato juice finished product through post processing, extrudes after Ipomoea batatas fragmentation, Heat Gelatinization again after extruding, the sweet potato juice gone out of extruding is used as shower water during squeezing; When the squeezing of potato slurry, mixing adds wood-fibred, during high temperature enzymolysis under ultrasound condition.
And described wood-fibred addition is the 0.5-1.5wt% of Ipomoea batatas weight.
And, described gelatinization point 85-95 DEG C, gelatinization 20-25 minute.
And, in potato slurry, add а alpha-amylase during described enzymolysis and add Vc again, keep 95 DEG C, enzymolysis 0.5-0.9 hour;
And add extra shower water spray in described expressing process once, extra amount of water is the 10-30wt% of sweet potato waste.
And, obtain sweet potato juice after described squeezing through post processing.
And, described post processing comprise coarse filtration, enzymolysis, sterilization, leave standstill, filter after, obtain sweet potato juice finished product.
And described enzymolysis adds pectase, amylase, enzymolysis 1-2 hour under the condition of 40 DEG C.
And, at described sterilization 90-100 DEG C, 20-30s.
Advantage of the present invention and beneficial effect as follows:
1, Ipomoea batatas is squeezed out juice Ipomoea batatas fragmentation is direct afterwards by the processing method of sweet potato juice provided by the invention, again this part juice is used as the shower water in the follow-up expressing process of sweet potato waste, sweet potato waste after extruding due to its degree of crushing higher, just make not for a long time through high temperature gelatinization, save gelatinization time, and then save the energy.
2, Ipomoea batatas squeezes out again through high temperature enzymolysis after juice gelatinization by the processing method of sweet potato juice provided by the invention, and because the particle diameter of sweet potato waste is little, enzymolysis liquid contacts with sweet potato juice fully, and enzymolysis is more thorough, shortens enzymolysis time, improves enzymolysis efficiency.
3, Ipomoea batatas is extruded juice as shower water by the processing method of sweet potato juice provided by the invention first, additionally need not add water again, and the sweet potato juice so produced is pure sweet potato juice, does not need further, to save ability, the mouthfeel of reduction sweet potato juice.
4, this method adds wood-fibred when squeezing sweet potato waste, due to wood-fibred smooth surface, there is no the burr of similar paper fiber surface, because burr can be mingled with pulp, affect filter effect, wood-fibred is longer simultaneously, can not be mingled with pulp, can give full play to the filtration of fiber, fruit juice in potato slag is fully extruded, improve the crushing juice rate of potato slag, can also reuse after wood-fibred cleaning simultaneously, cut the waste
5, in this method, the а alpha-amylase operative temperature of sweet potato juice is 90-97 DEG C, and action time is 1-1.2 hour, can give full play to effect of а alpha-amylase, is conducive to the pol increasing sweet potato juice, improves the output of sweet potato juice.
6, the present invention adopts ultrasonic enzymolysis first, ultrasonic recommendation power is 400-1200W, ultrasonicly can make that enzyme fully contacts with sweet potato paste, cell membranes in tissue or starch chain structure can be subject to certain breakage, be conducive to enzymolysis, improve enzymolysis efficiency, time 20-40% can be shortened.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
The Ipomoea batatas that the present invention uses is Beijing 553 kind.
Main innovation of the present invention is: 1. by attrition crushing after Ipomoea batatas fragmentation, and the sweet potato juice gone out of extruding, as shower water use during squeezing, is not additionally adding water, saving time and energy consumption; 2. add wood-fibred when the squeezing of potato slurry, wood-fibred smooth surface, does not have burr, can give full play to filtration, fully extruded by the fruit juice in potato slag in squeezing, improves the crushing juice rate of potato slag; 3. gelatinization after Ipomoea batatas extruding, the particle diameter of sweet potato waste is little, saves gelatinization time, saves enzymolysis time; 4, ultrasonic enzymolysis: ultrasonic recommendation power is 400-1200W, ultrasonicly can make that enzyme fully contacts with sweet potato paste, cell membranes in tissue or starch chain structure can be subject to certain breakage, be conducive to enzymolysis, improve enzymolysis efficiency, can shorten time 20-40%.
The pre-treatment of described wood-fibred is prior art, pine and poplar, the treated acquisition wood-fibred of log, the peculiar smell removing wood-fibred again can use, due to its fiber play be filter effect, the fruit juice product that finally can not enter, so to wood-fibred without particular/special requirement, the known wood-fibred in industry.
Embodiment 1
A processing method for energy-efficient sweet potato juice, step is as follows:
(1) selection: select Ipomoea batatas to carry out selecting, removal of impurities, cleaning;
(2) extrude after Ipomoea batatas fragmentation, squeeze out juice and obtain sweet potato waste, fruit juice is collected;
(3) sweet potato waste is carried out high temperature gelatinization, temperature 85-95 DEG C, gelatinization 20 minutes;
(4) ultrasonic enzymolysis: add а alpha-amylase (sweet potato waste: amylase=1:0.0025) in sweet potato waste, enzyme is diluted to the enzymes soln of 5-20% before interpolation, then adds Vc (sweet potato paste: Vc=1:0.0007); Keep 95 DEG C, enzymolysis 0.5 hour, obtain potato slurry;
Ultrasonic recommendation power is 400-1200W, ultrasonicly can make that enzyme fully contacts with sweet potato paste, cell membranes in tissue or starch chain structure can be subject to certain breakage, be conducive to enzymolysis, improve enzymolysis efficiency, can shorten time 20-40%.
(5) squeeze: in the potato slurry after enzymolysis, mixing adds wood-fibred, and wood-fibred addition is the 0.5-1.5wt% of Ipomoea batatas weight, squeezes after adding, and uses step fruit juice (2) as shower water, obtain sweet potato juice after squeezing in expressing process; Squeezing adopts belt filter press, uses step fruit juice (2) as shower water, to improve squeezing effect in expressing process.
(6) sweet potato juice is through post processing, obtains sweet potato juice product, the step saved.
(7) sweet potato juice is carried out coarse filtration successively according to existing technique, enzymolysis (adds pectase, amylase, enzymolysis 1-2 hour under the condition of 40 DEG C), sterilization is (at 90-100 DEG C, 20-30s), leave standstill, filter after, obtain sweet potato juice finished product, through cooling after carry out canned and store.
The post processing of sweet potato juice needs to carry out enzymolysis, sweet potato juice: enzyme=1: 0.001-0.003; Described enzyme be amylase, pectase, protease (with or without), select can making full use of with magnitude relation and transforming the nutriment in Ipomoea batatas of suitable amylase, pectase and protease, the high glycoprotein sweet potato juice obtained is also better on taste and color and luster, as preferably, the weight ratio of amylase, pectase and protease is 2: 2: 1.Enzymolysis can at room temperature carry out, and in order to the activity improving enzyme can suitably heat, but be generally no more than 60 DEG C (such as 30 ~ 60 DEG C), enzymolysis time is 2 ~ 3 hours; Generally can be heated to 90 ~ 110 DEG C during sterilization, keep 15 ~ 40s.
Owing to not having secondary water in whole production process, so the pol of sweet potato juice and the content of other nutritional labelings are the content of Ipomoea batatas Normal juice, and mouthfeel is unique, and composition enriches.
Crushing juice rate calculates, and calculate according to 100kg raw material sweet potato, after this squeezing, obtain sweet potato juice 85-90kg, squeeze according to existing technique, it goes out juice is 60-70kg, improves crushing juice rate moon 15-25%.
With 10 ° of BX for benchmark, table 1 and table 2 are respectively sweet potato juice microbiological indicator and the physical and chemical index of our setting, and this index reaches U.S.'s relevant regulations standard.
Table 1 sweet potato juice microbiological indicator
Table 2 sweet potato juice physical and chemical index
Embodiment 2
A processing method for energy-efficient sweet potato juice, step is as follows:
(1) selection: select Ipomoea batatas to carry out selecting, removal of impurities, cleaning;
(2) extrude after Ipomoea batatas fragmentation, squeeze out juice and obtain sweet potato waste, fruit juice is collected;
(3) sweet potato waste is carried out high temperature gelatinization, temperature 85-95 DEG C, gelatinization 20 minutes;
(4) enzymolysis: add а alpha-amylase (sweet potato waste: amylase=1:0.0027) in sweet potato waste, enzyme is diluted to the enzymes soln of 5-20% before interpolation, then adds Vc (sweet potato paste: Vc=1:0.00065); Keep 95 DEG C, enzymolysis 0.9 hour, obtain potato slurry;
(5) squeeze: in the potato slurry after enzymolysis, mixing adds wood-fibred, and wood-fibred addition is the 0.5-1.5wt% of Ipomoea batatas weight, squeezes after adding, and uses step fruit juice (2) as shower water, obtain sweet potato juice after squeezing in expressing process;
Squeezing adopts belt filter press, use step fruit juice (2) as shower water in expressing process, to improve squeezing effect, add extra shower water spray once simultaneously, owing to being the evaporation of squeezing limit, limit, the carrying out of the water meeting disintegrating slag squeezing additionally added, constantly evaporate, extra amount of water is the 10-30wt% of sweet potato waste.
(6) sweet potato juice is through post processing, obtains sweet potato juice product, the step saved.
The component content of table 3 sweet potato juice detects table
Kind Content
Moisture 35.30%
Ash content 1.55%
Protein 1.14%
Total reducing sugar 85.8%
Vitamin A 0.03mg/kg
Vitamin C 0.03mg/kg
Calcium 24.2mg/100g
Iron 1.7mg/100g
Sodium 32.2mg/100g
Zinc 328mg/100g
Beta carotene 850mg/100g

Claims (1)

1. a processing method for energy-efficient sweet potato juice, step is as follows:
(1) selection: select Ipomoea batatas to carry out selecting, removal of impurities, cleaning;
(2) extrude after Ipomoea batatas fragmentation, squeeze out juice and obtain sweet potato waste, fruit juice is collected;
(3) sweet potato waste is carried out high temperature gelatinization, temperature 85-95 DEG C, gelatinization 20 minutes;
(4) ultrasonic enzymolysis: add α alpha-amylase in sweet potato waste, sweet potato waste: amylase=1:0.0025, enzyme is diluted to the enzymes soln of 5-20% before interpolation, then adds Vc, sweet potato waste amylase mixture: Vc=1:0.0007; Keep 95 DEG C, enzymolysis 0.5 hour, obtain potato slurry; Ultrasonic power is 400-1200W;
(5) squeeze: in the potato slurry after enzymolysis, mixing adds wood-fibred, and wood-fibred addition is the 0.5-1.5wt% of Ipomoea batatas weight, squeezes after adding, and uses step fruit juice (2) as shower water, obtain sweet potato juice after squeezing in expressing process; Squeezing adopts belt filter press;
By sweet potato juice according to existing technique carry out successively coarse filtration, enzymolysis, sterilization, leave standstill, filter after, obtain sweet potato juice finished product, through cooling after carry out canned and store.
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CN103584233A (en) * 2013-11-15 2014-02-19 天津农科食品生物科技有限公司 High-sugar-degree sweet potato juice and method for processing high-sugar-degree sweet potato juice
CN106551309A (en) * 2015-09-16 2017-04-05 叶小利 Rhizoma Dioscoreae esculentae processing and utilization method
CN105394500A (en) * 2015-10-27 2016-03-16 国投中鲁果汁股份有限公司 Processing method of concentrated jicama clear juice
CN105394483A (en) * 2015-10-27 2016-03-16 国投中鲁果汁股份有限公司 Processing method of concentrated jicama clear juice with good mouthfeel and stable color
CN105995317A (en) * 2016-05-19 2016-10-12 乳山中诚果汁饮料有限公司 Concentrated and cloudy jujube juice and preparation method
CN105995319A (en) * 2016-05-19 2016-10-12 乳山中诚果汁饮料有限公司 High-efficiency and energy-saving burdock juice processing method

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CN100477927C (en) * 2006-03-13 2009-04-15 国投中鲁果汁股份有限公司 Concentrated sweet potato juice and production thereof
CN101816447A (en) * 2010-01-26 2010-09-01 陕西科技大学 Method for preparing sweet potato concentrated juice
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CN102138687B (en) * 2010-12-07 2012-12-26 天津科技大学 Method for producing grape skin health-care beverage
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