Background technology
Bread has obtained popularizing significantly in today as a kind of main flow food in people's life, and very popular.The freezing flour-dough technology has plurality of advantages, and it is the inexorable trend that realizes the big production of bread industryization.But the freezing back of dough bread quality can descend to some extent, shows as that bread specific volume is little, proofing period length, texture of loaf structure variation etc.Above-mentioned situation main cause occurring is because there is following problem in freezing flour-dough in application: 1, freezing meeting descends yeast survival rate and gas deliverability; 2, freezing middle ice crystal can cause damage to the gluten network structure, and the rheological equationm of state of freezing flour-dough is changed, and dough is held strength and descended; 3, can freeze water in freezing and form ice crystal, can damage the yeast cells film, the cytoplasm component is leaked, discharge reducing substances, as glutathione, the reduction gluten.
At present, the additive that uses in freezing flour-dough has oxidant, emulsifying agent and colloid usually, and mostly the characteristics of these several additives be in order to improve the character of dough, improves dough and holds strength after freezing, considers less for the vigor of yeast in the dough system.Therefore, these bread additive are in the application of freezing flour-dough, and its result of use is unsatisfactory.Oxidant such as potassium bromate, azo dicarbonamide etc. commonly used; in use there is potential safety hazard; and their use all has certain limiting the quantity of; so it can not play the effect of protection yeast cells these additives in freezing flour-dough quick-frozen, cold storage and course of defrosting, thereby the prepared bread quality in the freezing back of dough is descended.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point; thereby provide a kind of preparation method simple; adopt the physical chemistry processing method; can make it in freezing flour-dough quick-frozen, cold storage and course of defrosting, play the protection yeast cells; prevent simultaneously protein structure and change of properties again, keep the gluten hydratability and hold a kind of special composite biological antistaling agent for freeze dough fermentation of strength effect.
Main solution of the present invention is achieved in that
It forms proportioning by weight percentage antistaling agent of the present invention:
Get TGase 2-5% among the present invention, zytase 2-3%, AMS 2-3%, lipase 2-3%, hemicellulase 2-3%, glucose oxidase 2-3%, lecithin 7-8%, sucrose ester 12-15%, diacetyltartaric acid monoglyceride 18-20%, stearoyl lactate 18-20%, carboxymethyl cellulose 0.2-0.8%, locust bean gum 0.2-0.8%, Arabic gum 0.1-0.6%, guar gum 0.1-0.6%, ascorbic acid 2-3%, trehalose 2-3%, starch 25-30%, each component percentages sum is 100%, said components is evenly mixed at normal temperatures be finished product in 15-20 minute.
Starch can be cornstarch or farina or green starch etc. among the present invention.
Compared with the prior art the present invention has the following advantages:
Preparation method of the present invention is simple, adopts the physical chemistry processing method, can make it play the protection yeast cells in freezing flour-dough quick-frozen, cold storage and course of defrosting, prevents protein structure and change of properties, keeps the gluten hydratability and holds the strength effect; The bread proofing period that adopts the present invention to make is short, texture structure is fine and smooth, look is translated white, good springiness, golden yellow, the surperficial immaculate of appearance color, mouthfeel are soft delicate, and dough does not make prepared bread quality and local flavor reduce through freezing and refrigeration.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Its component proportioning in the embodiment of the invention (percentage meter by weight):
Embodiment one:
Getting TGase in the embodiment of the invention is: 2, zytase is: 3, AMS is: 3, lipase is: 3, hemicellulase is: 3, glucose oxidase is: 3, lecithin is: 8, sucrose ester is: 15, diacetyltartaric acid monoglyceride is: 20, stearoyl lactate is: 20, carboxymethyl cellulose is: 0.8, locust bean gum is: 0.8, Arabic gum is: 0.6, guar gum is: 0.6, ascorbic acid is: 3, trehalose is: 3, the starch extracting corn starch is: 30.Adopt above-mentioned prescription to add at normal temperatures in the vertical mixer, evenly mixed 15 minutes; With mixture weighing, packing, promptly obtain finished product again.
Adopting the antistaling agent addition of the prescription production in the present embodiment is 2% of flour weight.
The concrete production method of freezing flour-dough bread is as follows: flour: 1000g, sugar: 200g, salt: 10g, milk powder: 40g, yeast: 12-20g, butter: 180g, egg: 120g, water: 510-550g, antistaling agent: 20-30g.
All granular materials that will comprise antistaling agent of the present invention earlier in mixer at a slow speed: 73rpm stirs evenly, add egg, water, continue to stir to dough and absorb water, stir fast: 216rpm is smooth to dough, add shortening, stir at a slow speed: 2 minutes, stirring was drawn back until dough and is the film shape, at this moment dough temperature: 18-25 ℃ fast.Dough is left standstill: 10-20min, piecemeal: the 120g/ piece, rub circle with the hands, leave standstill again: 10-20min, shaping pack with preservative film or tinfoil paper ,-30 ℃ of following quick-frozens: 1 hour, refrigerate down at-18 ℃ then.When needing freezing flour-dough is taken out, thaw under 10 ℃ earlier: 20min, thaw under 35 ℃: 30min at 25-29 ℃, proofs under the 75-85% relative humidity condition: 2-3 hour again.The condition of curing is for getting angry: 150-160 ℃, fiery down: 210-220 ℃, cure the time approximately: 18-20 minute, decide on concrete condition (as the dough size).Bread dough culture propagation power: the 150ml after refrigerating three months under-18 ℃ that adopts the present invention to produce, bread specific volume: 6.51ml/g, the crumb look is translated white, the texture structure exquisiteness, good springiness, pure taste is to cure the bread quality that obtains without freezing dough similar.Compare prepared bread quality with the freezing flour-dough that does not add antistaling agent of the present invention and be significantly improved, bread specific volume is seen accompanying drawing 2 with the situation of change of cold preservation time.
Embodiment two:
Getting TGase in the embodiment of the invention is: 5, zytase is: 2, AMS is: 2, lipase is: 2, hemicellulase is: 2, glucose oxidase is: 2, lecithin is: 7, sucrose ester is: 12, diacetyltartaric acid monoglyceride is: 18, stearoyl lactate is: 15, carboxymethyl cellulose is: 0.2, locust bean gum is: 0.2, Arabic gum is: 0.1, guar gum is: 0.1, ascorbic acid is: 2, trehalose is: 2, starch is got farina: 25.Adopt above-mentioned prescription to add at normal temperatures in the vertical mixer, evenly mixed 20 minutes; With mixture weighing, packing, promptly obtain finished product again.Adopting the antistaling agent addition of the prescription production in the present embodiment is 2% of flour weight.The bread dough of producing is culture propagation power: 135ml after refrigerating three months under-18 ℃, bread proofing period: 140min, bread specific volume: 6.3ml/g, bread texture structure exquisiteness, the crumb look is translated white, good springiness, pure taste is to cure the bread quality that obtains without freezing dough similar.Comparing prepared bread quality with the freezing flour-dough that does not add antistaling agent of the present invention improves.
Embodiment three:
The bright agent prescription of going bail in the embodiment of the invention: TGase 3.5, zytase 2.5, AMS 2.5, lipase 2.5, hemicellulase 2.5, glucose oxidase 2.5, lecithin 7.5, sucrose ester 13.5, diacetyltartaric acid monoglyceride 19, stearoyl lactate 19, carboxymethyl cellulose 0.5, locust bean gum 0.5, Arabic gum 0.35, guar gum 0.3, ascorbic acid 2.5, trehalose 2.5, starch is got green starch 27.5, above-mentioned prescription is added in the vertical mixer at normal temperatures, evenly mixed 25 minutes; With mixture weighing, packing, promptly obtain finished product again.
Adopting the antistaling agent addition of the prescription production in the present embodiment is 2% of flour weight.The bread dough of producing is culture propagation power: 150ml after refrigerating three months under-18 ℃, bread proofing period: 135min, bread specific volume: 6.5ml/g, the crumb look is translated white, texture structure exquisiteness, good springiness, pure taste is to cure the bread quality that obtains without freezing dough similar.Comparing prepared bread quality with the freezing flour-dough that does not add antistaling agent of the present invention is significantly increased.
Formula material is market and purchases in the embodiment of the invention, and the equipment of employing is conventional equipment.