CN104431882A - Mucedin-free baked Nang prepared from sweet potato coarse dietary fibers and preparation method thereof - Google Patents

Mucedin-free baked Nang prepared from sweet potato coarse dietary fibers and preparation method thereof Download PDF

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Publication number
CN104431882A
CN104431882A CN201410679494.0A CN201410679494A CN104431882A CN 104431882 A CN104431882 A CN 104431882A CN 201410679494 A CN201410679494 A CN 201410679494A CN 104431882 A CN104431882 A CN 104431882A
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sweet potato
dietary fiber
thick
powder
starch
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木泰华
孙红男
刘兴丽
张苗
陈井旺
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Institute of Food Science and Technology of CAAS
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Institute of Food Science and Technology of CAAS
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    • AHUMAN NECESSITIES
    • A21BAKING; EDIBLE DOUGHS
    • A21DTREATMENT, e.g. PRESERVATION, OF FLOUR OR DOUGH, e.g. BY ADDITION OF MATERIALS; BAKING; BAKERY PRODUCTS; PRESERVATION THEREOF
    • A21D13/00Finished or partly finished bakery products
    • A21D13/40Products characterised by the type, form or use
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Abstract

The invention provides a nucedin-free baked Nang prepared from sweet potato coarse dietary fibers and a preparation method thereof. Raw materials for manufacturing the nucedin-free baked Nang comprise sweet potato coarse dietary fiber raw flour, sweet potato coarse dietary fiber ultra-fine powder, sweet potato coarse dietary fiber nanometer powder, sweet potato modified starch, extrusion sweet potato coarse dietary fiber powder, sweet potato coarse dietary fiber microwave treatment powder, sweet potato starch, food gum, plant source polyphenol, protein, sugar, salt, yeast, edible oil, water and the like. The weight ratio of the raw materials is 10-40: 10-40: 10-20: 4-12: 5-12: 5-13: 0.5-6: 0.1-3: 0.1-0.7: 1-3: 0-1: 0.1-3: 1-2: 14-34: 20-69. The sweet potato coarse dietary fiber nucedin-free baked Nang manufactured by utilizing the method is unique in sweet potato flavor, crispy in taste and golden-yellow in color, is rich in components of proteins, dietary fibers, vitamins, mineral element and the like, and has good nutrition and health effects.

Description

Roasting crusty pancake of the gluten-free type albumen utilizing the thick dietary fiber of sweet potato to make and preparation method thereof
Technical field
The present invention relates to food processing field, specifically, relate to roasting crusty pancake of a kind of gluten-free type albumen utilizing the thick dietary fiber of sweet potato to make and preparation method thereof.
Background technology
The topmost wheaten food of Kao Nangshi Turfan Uygur nationality, the history of existing more than 2000 year.The common practices of roasting crusty pancake is similar to Han nationality grilling cake.A little salt solution and ferment face is added in flour, and even, rub, slightly send out, get final product baking.Due to moisture few, storage is not bad for a long time, and be easy to carry, crisp-fried is good to eat in addition, and roasting crusty pancake is also by other nationality is liked.The roasting crusty pancake of tradition is generally that raw material makes with wheat flour, and gliadin and glutenin are necessary for the fermentation of roasting crusty pancake, can form the distinctive network structure of gluten thus obtain the dough that has good strength, elasticity and hold gas ability.
Chylous diarrhea is a kind of LADA enteroptosia disease, is 0.3-2% in the illness rate of European countries.It can cause the malabsorption of some nutritional labelings as mineral matter, folic acid, liposoluble vitamin.Chylous diarrhea is lifelong, permanent, and for celiac patients, unique effective method is the diet taking in gluten-free type albumen for a long time.Although gluten-free type albumen, to beneficial in chylous diarrhea symptom, exists many negative sequelae, comprise lower dietary fiber, trace element, vitamin and mineral matter and take in.
China is sweet potato plantation and big producing country, within 2012, China's sweet potato cultivated area is 3,480,000 hectares, output reaches 7,336 ten thousand tons, account for more than 70% of world's sweet potato total output, be the fifth-largest cereal crops be positioned at after wheat, paddy rice, corn, potato, play an important role in guarantee national food security and promotion socio-economic development.Sweet potato has very high nutritive value, is described as " life prolonging food " and " space food ".According to statistics, China sweet potato is mainly used in producing starch, sweet potato starch processing enterprise of China is more than 10000, wherein more than 90% is all medium-sized and small enterprises, large is main mainly with handicraft workshop, standardization and through engineering approaches degree is low, technique and equipment fall behind, the accessory substances such as a large amount of slurries, slag can be produced in starch process.According to statistics, often produce 1 ton of starch and can produce about 0.5 ton of (in butt) sweet potato dregs, these sweet potato dregs can obtain the thick dietary fiber of sweet potato after the techniques such as cleaning, drying and abrasive dust, and it is rich in the compositions such as starch, dietary fiber, pectin, vitamin, mineral element.
Report at present about utilizing sweet potato thick dietary fiber making gluten-free type albumen to bake crusty pancake method still belongs to blank.Develop the thick dietary fiber of sweet potato and make the new technology that gluten-free type albumen bakes crusty pancake, for the sustainable development promoting China's potato class processing industry, ensure China's grain security and improve dietary nutrition of urban residents significant.
Summary of the invention
The present invention is directed to the defect that crusty pancake existence baked by existing wheat, roasting crusty pancake of a kind of gluten-free type albumen utilizing the thick dietary fiber of sweet potato to make and preparation method thereof is provided.
In order to realize the object of the invention, a kind of thick dietary fiber of sweet potato that utilizes of the present invention makes the method that gluten-free type albumen bakes crusty pancake, comprises the steps:
1) following raw material is taken in proportion, described raw material comprises the thick dietary fiber fecula of sweet potato, the thick dietary fiber Ultramicro-powder of sweet potato, the thick dietary fiber nano powder of sweet potato, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, foodstuff glue, plant source polyphenol, albumen, sugar, salt, yeast, edible oil and water, the weight ratio of above-mentioned each raw material is followed successively by 10-40:10-40:10-20:4-12:5-12:5-13:0.5-6:0.1-3:0.1-0.7:1-3: 0-1:0.1-3:1-2:14-34:20-69,
2) dissolving foodstuff glue with being equivalent to foodstuff glue weight 5-10 water (such as, water temperature 50-100 DEG C) doubly, obtaining foodstuff glue solution; All the other water-soluble solution yeast, obtain yeast soln, are placed in 28-38 DEG C of activation 5-20min;
3) thick for sweet potato dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, albumen, sugar, salt and plant source polyphenol are poured in dough mixing machine, add edible oil and step 2) foodstuff glue solution, stir 5-15min with 80-120rpm, form dough/pasta;
4) by step 2) yeast soln that activates adds step 3) dough/pasta in, stir 5-20min with 80-120rpm, until form the dough of uniformity;
5) by step 4) dough at 30-38 DEG C, humidity 70%-85% condition bottom fermentation 40-90min;
6) by step 5) in proofed dough stripping and slicing, rub with the hands circle, by flat shaping; Face base after shaping sprays appropriate egg liquid glucose on the surface, and spreads a little sesame, to improve the appearance colour of the rear crusty pancake of baking, and can strengthen taste flavor and the nutritive value of crusty pancake;
7) by step 6) shaping face base puts into baking oven, and 200-250 DEG C of baking 10-20min, is cooled to room temperature after coming out of the stove, and obtains gluten-free type albumen roasting crusty pancake finished product.
In preceding method, yeast sources is in Saccharomyces.
In preceding method, in raw material, the granularity of sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch and albumen is higher than 90 orders, preferably >=150 orders.
In preceding method, the preparation method of the thick dietary fiber fecula of described sweet potato is: pulverized by sweet potato, the 0.1M sodium acetate buffer of pH 5 is added by solid-liquid ratio 1:20, and add the Thermostable α-Amylase of sweet potato weight 0.15%, at 95 DEG C of enzymolysis 1h, the centrifugal 20min of 5000rpm, removes supernatant, obtains wet Rhizoma Dioscoreae esculentae dietary fiber; To wet Rhizoma Dioscoreae esculentae dietary fiber in 50-60 DEG C of dry 24h, and Universalpulverizer crosses 100 mesh sieves after pulverizing, and to obtain final product.
In preceding method, the preparation method of described sweet potato thick dietary fiber Ultramicro-powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is added micronizer, and room temperature pulverizes 1min, crosses 100 mesh sieves, to obtain final product.
In preceding method, the preparation method of the thick dietary fiber nano powder of described sweet potato is: make particle diameter be less than 100nm by mechanical attrition method Rhizoma Dioscoreae esculentae dietary fiber fecula.
In preceding method, the preparation method of the thick food fibre powder of described extrusion sweet potato is: wet Rhizoma Dioscoreae esculentae dietary fiber is added extruder, extrusion temperature 100 DEG C, screw speed 800rpm, and then Universalpulverizer is pulverized, and crosses 100 mesh sieves, to obtain final product.
In preceding method, the preparation method of described sweet potato thick dietary fiber microwave treatment powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is placed in micro-wave oven, and microwave treatment power is 300W, processing time 60min, then in 50-60 DEG C of dry 24h, crosses 100 mesh sieves, to obtain final product after pulverizing.
In preceding method, described sweet potato starch is the starch of sweet potato starch through physical and chemical modified, includes but not limited to that pre-gelatinized starch, aging starch, starch phosphate, crosslinked starch, enzymically modified starch, super-pressure work in coordination with enzyme process modified starch etc.
In preceding method, described foodstuff glue is one or more in sweet potato pectin, Potato pectins, beet pectin, apple pectin, citrus pectin, pomelo-pectin, pineapple pectin, blueberry pectin, citrus pectin, xanthans, carragheen, konjac glucomannan, guar gum, Arabic gum, hydroxypropyl methylcellulose, methylcellulose, microcrystalline cellulose etc.
In preceding method, described albumen is one or more in sweet potato, potato protein, rice protein, Chickpea Protein, peanut protein, soybean protein, lactoferrin, whey isolate protein, casein and whey protein concentrate etc.
In preceding method, described plant source polyphenol is selected from one or more in Tea Polyphenols, apple polyphenol, grape seed polyphenols, sweet potato stem leaf polyphenol etc.
In preceding method, described sugar is one or more in trehalose, glucose, fructose, galactolipin, maltose, arabinose, dextrin, cyclodextrin, beta glucan, araboxylan and sugar alcohol etc.
The present invention also provides the gluten-free type albumen utilizing said method to make roasting crusty pancake.
The present invention has the following advantages:
(1) the present invention can significantly improve the roasting crusty pancake specific volume utilizing the thick dietary fiber of sweet potato to prepare, and effectively can improve texture characteristic and organoleptic quality that sweet potato thick dietary fiber gluten-free type albumen bakes crusty pancake.The heating in advance of raw meal can improve moisture and distribution, improves water imbibition and the glass transition temperature of dough, improves matter structure and the storing property of roasting crusty pancake; In gel process, sweet potato thick dietary fiber particle diameter is less can compete moisture with other compositions in dough with sweet potato starch and converted starch, thus is conducive to forming the skeleton structure that the thick dietary fiber of sweet potato bakes crusty pancake; The interpolation of separate sources albumen, not only can increase the water holding capacity that the thick dietary fiber of sweet potato bakes crusty pancake, specific volume and nutritive value that the thick dietary fiber of sweet potato bakes crusty pancake can also be improved, and play the effect that certain thick dietary fiber of improvement sweet potato bakes crusty pancake epidermis and inner color and luster; And foodstuff glue fully aquation can form sticky macromolecular substances under certain condition, bake in the dough of crusty pancake at the thick dietary fiber of sweet potato and can play thickening, increasing sticks, improve and hold the effects such as gas ability.
(2) content that the sweet potato thick dietary fiber gluten-free type albumen that this method makes bakes protein in crusty pancake, mineral matter, dietary fiber, vitamin and polyphenoils is obviously better than the roasting crusty pancake of existing wheat.
(3) this method is simple to operate, is easy to suitability for industrialized production.
Detailed description of the invention
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.If do not specialize, the conventional means that technological means used in embodiment is well known to those skilled in the art, is raw materials usedly commercial goods.
Granularity >=150 order of the sweet potato used in following examples thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch and albumen.Yeast sources is in Saccharomyces.
Wherein, the preparation method of the thick dietary fiber fecula of sweet potato is: pulverized by sweet potato, the 0.1M sodium acetate buffer of pH 5 is added by solid-liquid ratio 1:20, and add the Thermostable α-Amylase of sweet potato weight 0.15%, at 95 DEG C of enzymolysis 1h, the centrifugal 20min of 5000rpm, removes supernatant, obtains wet Rhizoma Dioscoreae esculentae dietary fiber; To wet Rhizoma Dioscoreae esculentae dietary fiber in 50-60 DEG C of dry 24h, and Universalpulverizer crosses 100 mesh sieves after pulverizing, and to obtain final product.
The preparation method of sweet potato thick dietary fiber Ultramicro-powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is added micronizer, and room temperature pulverizes 1min, crosses 100 mesh sieves, to obtain final product.
The preparation method of the thick dietary fiber nano powder of sweet potato is: make particle diameter be less than 100nm by mechanical attrition method Rhizoma Dioscoreae esculentae dietary fiber fecula.
The preparation method of the thick food fibre powder of extrusion sweet potato is: wet Rhizoma Dioscoreae esculentae dietary fiber is added extruder, extrusion temperature 100 DEG C, screw speed 800rpm, and then Universalpulverizer is pulverized, and crosses 100 mesh sieves, to obtain final product.
The preparation method of sweet potato thick dietary fiber microwave treatment powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is placed in micro-wave oven, and microwave treatment power is 300W, processing time 60min, then in 50-60 DEG C of dry 24h, crosses 100 mesh sieves, to obtain final product after pulverizing.
Embodiment 1 bakes each pulp furnish of crusty pancake for making sweet potato thick dietary fiber gluten-free type albumen
In the present embodiment, the each raw material baking crusty pancake for making potato slag gluten-free type albumen is: sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, citrus pectin, sweet potato stem leaf polyphenol, rice protein, trehalose, salt, yeast and water, the weight ratio of above-mentioned each raw material is followed successively by 25:21:12:8:10:10:5:1.5:0.5:2:1:0.5:1:50.
Embodiment 2 bakes each pulp furnish of crusty pancake for making sweet potato thick dietary fiber gluten-free type albumen
In the present embodiment, the each raw material baking crusty pancake for making potato slag gluten-free type albumen is: sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, sweet potato pectin, Tea Polyphenols, Chickpea Protein, trehalose, salt, yeast and water, the weight ratio of above-mentioned each raw material is followed successively by 25:30:10:8:6:11:2:1.5:0.6:2:0.6:2:1.5:60.
Embodiment 3 utilizes the thick dietary fiber of sweet potato to make the method that gluten-free type albumen bakes crusty pancake
According to the pulp furnish of embodiment 1, make the roasting crusty pancake of gluten-free type albumen, comprise the steps:
1) following raw material is taken in proportion: sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, citrus pectin, sweet potato stem leaf polyphenol, rice protein, trehalose, salt, yeast and water;
2) water being equivalent to citrus pectin weight 5 times is heated to 60 DEG C, to dissolve citrus pectin, obtains citrus pectin solution; All the other water are heated to 32 DEG C, to dissolve yeast, obtain yeast soln, are placed in constant incubator and activate stand-by, and soak time is 10min, and activation temperature is 32 DEG C;
3) sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, rice protein, trehalose, salt and sweet potato stem leaf polyphenol are poured in dough mixing machine, add peanut oil and step 2) citrus pectin solution, stir 10min at 100 rpm, form dough/pasta;
4) by step 2) yeast soln that activates adds step 3) dough/pasta in, stir 15min at 100 rpm, until form the dough of uniformity;
5) by step 4) dough at 37 DEG C, humidity 80% condition bottom fermentation 40min;
6) by step 5) the dough stripping and slicing that proofed, rub circle with the hands, by flat shaping;
7) by step 6) shaping face base puts into baking oven, and 220 DEG C of baking 15min, are cooled to room temperature after coming out of the stove, and obtain gluten-free type albumen roasting crusty pancake finished product.
Embodiment 4 utilizes the thick dietary fiber of sweet potato to make the method that gluten-free type albumen bakes crusty pancake
According to the pulp furnish of embodiment 2, make the roasting crusty pancake of gluten-free type albumen, comprise the steps:
1) following raw material is taken in proportion: sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, sweet potato pectin, Tea Polyphenols, Chickpea Protein, trehalose, salt, yeast and water;
2) water being equivalent to sweet potato pectin weight 6 times is heated to 65 DEG C, with dissolving step 1) in the sweet potato pectin that takes, obtain sweet potato pectin solution; All the other water are heated to 35 DEG C, to dissolve yeast, obtain yeast soln, are placed in constant incubator and activate stand-by, and soak time is 15min, and activation temperature is 30 DEG C;
3) thick for sweet potato dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, Chickpea Protein, trehalose, salt and Tea Polyphenols are poured in dough mixing machine, add sheep oil and step 2) sweet potato pectin solution, stir 10min at 100 rpm, form dough/pasta;
4) by step 2) yeast soln that activates adds step 3) dough/pasta in, stir 15min at 100 rpm, until form the dough of uniformity;
5) by step 4) dough be 37 DEG C in temperature, humidity 80% condition bottom fermentation 40min;
6) by step 5) the dough stripping and slicing that proofed, rub circle with the hands, by flat shaping;
7) by step 6) shaping face base puts into baking oven, and 220 DEG C of baking 15min, are cooled to room temperature after coming out of the stove, and obtain gluten-free type albumen roasting crusty pancake finished product.
Embodiment 5 sweet potato thick dietary fiber gluten-free type albumen bakes the constituent analysis of crusty pancake
Bake the moisture of crusty pancake, protein, fat, dietary fiber, starch, ash content, vitamin and mineral element etc. to the sweet potato thick dietary fiber gluten-free type albumen made in embodiment 4 to analyze.
1, determination of moisture: determination of moisture adopts GB5009.3-2010.Get clean aluminum measuring cup, be placed in 101-105 DEG C of drying box, bottle cap tiltedly props up in bottle limit, heating 1.0h, and taking-up is built, and puts cooling 0.5h in drier, weighs, and repeats to be dried to that front and back twice are of poor quality is no more than 2mg, is constant weight.Take sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake 3-5g (being accurate to 0.0001g), put in measuring cup, sample thickness is no more than 5mm, add a cover, after precision weighing, put in 101-105 DEG C of drying box, bottle cap tiltedly props up in bottle limit, after dry 2-4h, build taking-up, weigh after putting into drier cooling 0.5h.And then put into 100-105 DEG C of dry about the 1h of drying box, take out, weigh again after putting into drier cooling 0.5h.And repeat above to be operated to that front and back twice are of poor quality is no more than 2mg, be constant weight.
Result calculates:
Moisture (%)=100 × (m 1– m 2)/(m 1– m 3)
In formula:
M 1---the quality of measuring cup and sample, g;
M 2---the quality after measuring cup and samples dried, g;
M 3---the quality of measuring cup, g.
During moisture >=1g/100g, result of calculation retains three position effective digitals; During moisture < 1g/100g, result retains two position effective digitals.
Note: during twice constant weight value in the end calculates, gets last weighing value.
2, protein content determination: take 0.5g sweet potato thick dietary fiber gluten-free type albumen and bake crusty pancake and put into nitrated pipe, add the concentrated sulfuric acid (concentration 98%) 10mL, digestion temperature 420 DEG C, time 1.5h, bakes the protein content (Foss company of Sweden KIELTEC ANALYSISER kjeldahl apparatus) in crusty pancake with kjeldahl apparatus sweet potato thick dietary fiber gluten-free type albumen.
3, fat test: take 1.0g sweet potato thick dietary fiber gluten-free type albumen and bake in the paper sleeve of craming food into one's mouth and being placed on cleaning, add a small amount of absorbent cotton, in lixiviate beaker, add 80mL benzinum, extract fat in sample with the automatic fatty detector of Foster Kato company Soxtec Avanti 2050.After lixiviate terminates, take out extraction cup, and extraction cup is placed in 100 DEG C of drying box 30min, cool in drier and weigh again, calculate fat content.
Fat content (%)=W 2× 100%/W 1
W 1example weight before-lixiviate, g;
W 2fat weight after-lixiviate drying, g.
4, dietary fiber content measures: carry out with reference to AOAC 991.43 method.
Concrete grammar is: take sweet potato thick dietary fiber gluten-free type albumen and bake crusty pancake 1.000 ± 0.005g (being accurate to 0.1mg) in 100mL beaker, add 40mL MES-TRIS (2-(N-morpholino) sulfonic group ethane-three hydroxyl (methylol) aminomethane) buffer solution, pH8.2, is stirred to and is uniformly dispersed; Add 50 μ L heat-resistant alpha-amylase liquid, magnetic stirring apparatus stirring at low speed, and hatch 30min in boiling water bath after, be cooled to 60 DEG C, residue on 10mL distilled water flushing beaker inwall; Add the HCl of 5mL 0.561M, and constantly stir, then use NaOH or HCl of 1M at 60 DEG C adjust ph to 4.0-4.7; Add 100 μ L amyloglucosidase solution, fully mix, oscillation incubation 30min at 60 DEG C; Add 100 μ L protein enzyme solutions, fully mix, oscillation incubation 30min at 60 DEG C; In beaker, add 95% ethanol (95% ethanol and mixeding liquid volume to be measured are than 4:1) that 225mL is preheated to 60 DEG C, under room temperature, precipitate 1h; Enzymolysis liquid after alcohol settling is transferred in crucible, with residue in 78% ethanol purge beaker, proceed to suction filtration in crucible in the lump, use 78% ethanol, 95% ethanol and acetone cleaning crucible 2 times more respectively, then crucible being placed in 105 DEG C of baking ovens placements spends the night to constant weight, record crucible and residue weight (W2).Measure the content of protein, ash content in residue, its weight is designated as P, A respectively.
Result calculates:
Dietary fiber content (%)=100 × (W 2-W 1-P-A)/W
W-example weight, g;
W 1-crucible and diatomaceous weight, g;
W 2the weight of-crucible, diatomite and residue, g;
The content of protein in P-residue, g/100g;
The content of ash content in A-residue, g/100g.
Note: the absolute difference of twice that obtains under repeated condition independent measurement result must not exceed 5% of arithmetic mean of instantaneous value.
5, starch test: measure according to the method for AOAC996.11.Get the roasting crusty pancake (10mg) of sweet potato thick dietary fiber gluten-free type albumen and join (16 × 120mm) in teat glass, rap test tube, to guarantee that all samples are all fallen bottom test tube; Add in 0.2mL 80% ethanol to sample and increase its dissolubility, mix with turbine mixer; Add the Thermostable α-Amylase (100U/mL) of 3mL immediately, in boiling water bath, hatch 6min (the 2nd, 4,6min shakes test tube energetically); Add 0.1mL starch glucolase (3300U/mL), with turbine mixer mixing, water-bath 30min at 50 DEG C; Transferred to by the test tube of total Test in 100mL volumetric flask, clean with wash bottle cleaning down, use distilled water constant volume, mixing, decile solution is centrifugal 10min under 3000r; Dilute solution after transfer decile (0.1mL) is in teat glass; Add glucose oxidase (Glucose oxidase plus peroxidase, the GOPOD) reagent of 3mL to (comprise D-Glucose control group and blank group) in each test tube, water-bath 20min at 50 DEG C; D-Glucose control group comprises 0.1mL D-Glucose solution and 3.0mL GOPOD reagent, and blank group comprises 0.1mL hydration 3.0mL GOPOD reagent; The absorbance of working sample, D-Glucose control group and blank group under 510nm.Calculate by following formula:
Content of starch (%)=(A 1-A 2) × (F/W) × FV × 0.9
A 1the absorbance of-sample;
A 2the absorbance of-blank group;
The absorbance of F-100/ control group;
W-example weight, g;
The volume of FV-final constant volume, mL.
6, ash determination: ash determination is with reference to the method for GB 5009.4-2010.Concrete steps are: the porcelain crucible getting suitable size is placed in Muffle furnace, and calcination 0.5h at 550 ± 25 DEG C, is cooled to about 200 DEG C, take out, put into drier and cool 30min, precise.Repeat calcination to front and back twice weighing difference to be no more than 0.5mg be constant weight.Then, get 3g-10g (being accurate to 0.0001g) sweet potato thick dietary fiber gluten-free type albumen and bake crusty pancake and be placed in porcelain crucible, first on electric hot plate, with little fire heating, sample is fully carbonized to smokelessly, be then placed in Muffle furnace, at 550 DEG C ± 25 DEG C calcination 4h.Be cooled to about 200 DEG C, take out, put into drier and cool 30min, time before weighing as found that ignition residue has a carbon granule, little water should be instilled in sample moistening, making blocking loosening, evaporating water again calcination to namely representing that without carbon granule ashing completely, can weigh.Repeat calcination to front and back twice weighing difference to be no more than 0.5mg be constant weight.Be calculated as follows:
X 1=100×(m 1-m 2)/(m 3-m 2)
X 1content of ashes in-sample, g/100g;
M 1the quality of-crucible and ash content, g;
M 2the quality of-crucible, g;
M 3the quality of-crucible and sample, g.
Note: the absolute difference of twice that obtains under repeated condition independent measurement result must not exceed 5% of arithmetic mean of instantaneous value.
7, the mensuration of vitamin content:
Content of vitamin E measures with reference to GB/T 5009.82-2003;
Vitamin B1 content measures with reference to GB/T 5009.84-2003;
Vitamin B2 content measures with reference to GB/T 7629-87.
Vitamin C content assay method is as follows:
Weigh sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake 4g in the balance, add 2% oxalic acid solution a little, grind in mortar, move into 50mL volumetric flask, be settled to graduation mark with 2% oxalic acid, shake up rear stand for standby use.Accurately measure 1mL standard chemical resistance acid solution and add 9mL 2% oxalic acid solution in 100mL conical flask, then use 2,6-D to be titrated to solution in pink, calculate the concentration of 2,6-D, represent with the mg number that every mL 2,6-D solution is equivalent to ascorbic acid.Accurate pipette samples extract (supernatant or filtrate) two parts, every part of 10.0mL, is placed in conical flask respectively, is titrated to solution in pink, records 2,6-D liquor capacities used with 2,6-D.Accurate absorption 2% oxalic acid 10mL.Be titrated to solution in pink with 2,6-D, record volume used.Computing formula is as follows:
V ccontent (mg/100g sample)=(V a-V b) × S/W × 100
V afor the volume of titration sample extracting solution used 2,6-D;
V bfor the volume of titration blank used 2,6-D;
S is the mg number that 1mL 2,6-D is equivalent to ascorbic acid;
W is the weight of testing sample.
8, the mensuration of mineral element:
Carry out with reference to GB19644-2010 method.Concrete grammar is as follows: claim 2-3g sweet potato thick dietary fiber gluten-free type albumen to bake and cram food into one's mouth in crucible, be placed on electric furnace and carry out concentrated and carbonization by suitable temperature, until sweet potato thick dietary fiber gluten-free type albumen bakes crusty pancake become black completely, no longer produce thick smoke, namely now carbonization is complete.Be put in muffle furnace by crucible and carry out ashing, 650 DEG C of calcination 3-4h, until the powder of the solid-state grizzle of black, then ashing is complete.Take out crucible and be cooled to room temperature, add 5mL (1:3) hydrochloric acid, boil on electric furnace after abundant dissolving, filter with quantitative filter paper, move in 25mL volumetric flask, constant volume, liquid now in volumetric flask is transparency liquid, for measuring the content of iron, then use 25 times of diluent determining calcium, with 500 times of diluent determining potassium, sodium and magnesium.The standard series of selected potassium, sodium, magnesium, calcium, iron, magnesium, by changing the instrument conditions such as acetylene flow, lamp current, combustion head height, surveying its absorbance, determining the best instrument condition of each element determination.The standard series of selected potassium, sodium, magnesium, calcium, iron, magnesium, under above-mentioned best instrument and experimental condition, the range of linearity of mensuration potassium, sodium, magnesium, calcium, iron, magnesium and detectability.
Sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake Middle nutrition composition analysis result is in table 1.
Table 1 sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake Analysis of Nutritive Composition (g/100g)
As can be seen from Table 1, protein, fat, dietary fiber, V in the roasting crusty pancake of sweet potato thick dietary fiber gluten-free type albumen c, content of starch enrich, protein can provide needed by human body to want energy, and increases the supply of essential amino acid; Dietary fiber can angiocardiopathy preventing, cancer, diabetes, obesity and Other diseases; V cthe increase of content can improve the non-oxidizability that sweet potato thick dietary fiber gluten-free type albumen bakes crusty pancake, contributes to anti-ageing, Improving memory power etc.; Starch can provide the heat of needed by human body.In addition, sweet potato thick dietary fiber gluten-free type albumen is baked in crusty pancake also containing a small amount of V e, VB 1and VB 2.
Sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake Mineral Element Contents analysis result is in table 2.
Table 2 sweet potato thick dietary fiber gluten-free type albumen roasting crusty pancake Mineral Concentrations analysis (mg/100g)
As can be seen from Table 2, sweet potato thick dietary fiber gluten-free type albumen is baked containing the abundant mineral element such as potassium, sodium, phosphorus in crusty pancake, also containing a certain amount of calcium, magnesium and iron etc.
Visible, it is a kind of novel staple food products having better nutritivity and be worth that the thick dietary fiber of the sweet potato made by this method gluten-free type albumen bakes crusty pancake; In addition, because this product is not containing mucedin, therefore, the dietary structure to gluten protein allergies crowd (as celiac patients) can be enriched preferably, strengthen the trophic function of gluten-free type protein product.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.

Claims (10)

1. utilize the thick dietary fiber of sweet potato to make the method that gluten-free type albumen bakes crusty pancake, it is characterized in that, comprise the steps:
1) following raw material is taken in proportion, described raw material comprises the thick dietary fiber fecula of sweet potato, the thick dietary fiber Ultramicro-powder of sweet potato, the thick dietary fiber nano powder of sweet potato, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, foodstuff glue, plant source polyphenol, albumen, sugar, salt, yeast, edible oil and water, the weight ratio of above-mentioned each raw material is followed successively by 10-40:10-40:10-20:4-12:5-12:5-13:0.5-6:0.1-3:0.1-0.7:1-3: 0-1:0.1-3:1-2:14-34:20-69,
2) with being equivalent to foodstuff glue weight 5-10 water-soluble solution foodstuff glue doubly, foodstuff glue solution is obtained; All the other water-soluble solution yeast, obtain yeast soln, are placed in 28-38 DEG C of activation 5-20min;
3) thick for sweet potato dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch, albumen, sugar, salt and plant source polyphenol are poured in dough mixing machine, add edible oil and step 2) foodstuff glue solution, stir 5-15min with 80-120rpm, form dough/pasta;
4) by step 2) yeast soln that activates adds step 3) dough/pasta in, stir 5-20min with 80-120rpm, until form the dough of uniformity;
5) by step 4) dough at 30-38 DEG C, humidity 70%-85% condition bottom fermentation 40-90min;
6) by step 5) in proofed dough stripping and slicing, rub with the hands circle, by flat shaping; Face base after shaping sprays appropriate egg liquid glucose on the surface, and spreads a little sesame;
7) by step 6) shaping face base puts into baking oven, and 200-250 DEG C of baking 10-20min, is cooled to room temperature after coming out of the stove, and obtains gluten-free type albumen roasting crusty pancake finished product.
2. method according to claim 1, is characterized in that, described yeast sources is in Saccharomyces.
3. method according to claim 1, it is characterized in that, in raw material, the granularity of sweet potato thick dietary fiber fecula, sweet potato thick dietary fiber Ultramicro-powder, sweet potato thick dietary fiber nano powder, sweet potato starch, the thick food fibre powder of extrusion sweet potato, sweet potato thick dietary fiber microwave treatment powder, sweet potato starch and albumen is higher than 90 orders;
The preparation method of the thick dietary fiber fecula of described sweet potato is: pulverized by sweet potato, the 0.1M sodium acetate buffer of pH 5 is added by solid-liquid ratio 1:20, and add the Thermostable α-Amylase of sweet potato weight 0.15%, at 95 DEG C of enzymolysis 1h, the centrifugal 20min of 5000rpm, remove supernatant, obtain wet Rhizoma Dioscoreae esculentae dietary fiber; Rhizoma Dioscoreae esculentae dietary fiber will be wet in 50-60 DEG C of dry 24h, and cross 100 mesh sieves after pulverizing, to obtain final product;
The preparation method of described sweet potato thick dietary fiber Ultramicro-powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is added micronizer, and room temperature pulverizes 1min, crosses 100 mesh sieves, to obtain final product;
The preparation method of the thick dietary fiber nano powder of described sweet potato is: make particle diameter be less than 100nm by mechanical attrition method Rhizoma Dioscoreae esculentae dietary fiber fecula;
The preparation method of the thick food fibre powder of described extrusion sweet potato is: wet Rhizoma Dioscoreae esculentae dietary fiber is added extruder, extrusion temperature 100 DEG C, and screw speed 800rpm, then pulverizes, and crosses 100 mesh sieves, to obtain final product;
The preparation method of described sweet potato thick dietary fiber microwave treatment powder is: wet Rhizoma Dioscoreae esculentae dietary fiber is placed in micro-wave oven, and microwave treatment power is 300W, processing time 60min, then in 50-60 DEG C of dry 24h, crosses 100 mesh sieves, to obtain final product after pulverizing.
4. method according to claim 1, it is characterized in that, described sweet potato starch is the starch of sweet potato starch through physical and chemical modified, includes but not limited to that pre-gelatinized starch, aging starch, starch phosphate, crosslinked starch, enzymically modified starch, super-pressure work in coordination with enzyme process modified starch.
5. method according to claim 1, it is characterized in that, described foodstuff glue is one or more in sweet potato pectin, Potato pectins, beet pectin, apple pectin, citrus pectin, pomelo-pectin, pineapple pectin, blueberry pectin, citrus pectin, xanthans, carragheen, konjac glucomannan, guar gum, Arabic gum, hydroxypropyl methylcellulose, methylcellulose, microcrystalline cellulose.
6. method according to claim 1, it is characterized in that, described albumen is one or more in sweet potato, potato protein, rice protein, Chickpea Protein, peanut protein, soybean protein, lactoferrin, whey isolate protein, casein and whey protein concentrate.
7. method according to claim 1, is characterized in that, described plant source polyphenol is selected from one or more in Tea Polyphenols, apple polyphenol, grape seed polyphenols, sweet potato stem leaf polyphenol.
8. method according to claim 1, is characterized in that, described sugar is one or more in trehalose, glucose, fructose, galactolipin, maltose, arabinose, dextrin, cyclodextrin, beta glucan, araboxylan and sugar alcohol.
9. method according to claim 1, is characterized in that, step 2) in be 50-100 DEG C for dissolving the temperature of the water of foodstuff glue.
10. the roasting crusty pancake of the gluten-free type albumen that method makes according to any one of claim 1-9.
CN201410679494.0A 2014-11-24 2014-11-24 Mucedin-free baked Nang prepared from sweet potato coarse dietary fibers and preparation method thereof Pending CN104431882A (en)

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