A kind of jujube-acetic acid beverage and processing technology thereof
Technical field
The present invention relates to a kind of jujube-acetic acid beverage and processing technology thereof.
Background technology
Red date is to be loved by the people and rare integration of drinking and medicinal herbs food, and the red date output of China sharply increases in recent years, and wherein the red date output in Xinjiang increases substantially.Since red date have perishable rotten, storage property is poor, the depolarization small part is eaten raw and is made outside the candied date, the jujube fruit overwhelming majority is made into dried jujube, is that raw material is processed into various food with dried jujube then.And dried jujube is compared with bright jujube, and nutritional labeling has very big loss, and traditional jujube products designs and varieties are few, taste is single, far can not satisfy consumers in general's demand.Fruit vinegar is typical physiological alkalinity food, can effectively keep human acid-base balance, control agent intracellular metabolite, very strong anti-cancer, antitumaous effect are arranged, simultaneously can also prevent multiple diseases such as hypertension, high fat of blood, cerebral thrombus, artery sclerosis, have effects such as delaying senility, eliminate human body fatigue, appetite-stimulating indigestion-relieving, Antialcoholic liver-protecting, antisepsis and sterilization.
The present invention utilizes red date to be primary raw material, employs new technology on original technology basis, when improving the red date crushing juice rate greatly, makes the abundant jujube-acetic acid beverage of taste through allotment.Raw material can also be selected some inferior red dates in addition, has not only improved the utilization rate and the commodity value thereof of " inferior jujube ", has increased farmers' income, and can make full use of the fruit resource, cuts the waste, and turns waste into wealth, and benefits the nation and the people.
Summary of the invention
The object of the invention provides a kind of jujube-acetic acid beverage and processing technology thereof.
Processing process of the present invention is:
Pretreatment of raw material → pulp preparation → super-pressure enzymolysis → adjustment saccharic acid → inoculation → alcoholic fermentation → acetic fermentation → clarification → sterilization → allotment → bottling
Concrete processing step is:
1. pretreatment of raw material: red date is removed the grain that goes mouldy, damages by worms, and water cleans and drains after toast, smokes with jujube meat and shrinks, and fructus corni is little to split, and the burnt phenomenon of sticking with paste does not take place, and finished color is unlikely too dark in well.90 ℃ of baking temperatures, stoving time 50~60min;
2. pulp preparation: the running water that will add its 4~6 times of weight through the extra dry red wine jujube of overbaking soaks, after making its flesh cell tissue fully expand, soften, heat the stewing 15~20min that boils with the running water of 2~3 times of weight of extra dry red wine jujube again, to fructus corni break, pulp soft mashed till.Again with its making beating, degree of fragmentation to be destroying jujube nuclear for good, and making beating back gained jujube slurry weight is about heavy 5~7 times of dried jujube;
3. super-pressure assistance enzymolysis: adopt super-pressure auxiliary enzymes solution, the pull an oar red date pulp of gained of boiling is added extra-high tension unit and carries out preliminary treatment, the pressure design value is 400~500MPa, add pectase 0.04~0.06% behind preliminary treatment 25~35min, setting hydrolysis temperature simultaneously is 45~50 ℃, enzymolysis time 3~5h (during every 1h stir 1min).Adopt super-pressure auxiliary enzymes solution, can improve the red date crushing juice rate greatly;
4. adjust saccharic acid, inoculation: behind the enzymolysis with the red date pulp at the centrifugal 5min of 4000r/min, collect supernatant and promptly get jujube juice, surveying its content of reducing sugar is 95~98.6g/L; The soluble solid content of jujube juice is transferred to 14-16%, and through 121 ℃ of sterilization 15min, wine yeast and lactic acid bacteria are inserted in the cooling back, and inoculative proportion is 3: 2, and total inoculum concentration is 3%;
5. alcoholic fermentation: will inoculate good jujube juice and carry out alcoholic fermentation, fermentation temperature is set at 28-30 ℃, and fermentation time is set at 7-8d.After alcoholic fermentation finished, recording red wine liquid alcohol content was 6.8-7.4%, and content of reducing sugar is 11.2-19.5g/l.This moment, clear had typical jujube perfume (or spice), and mouthfeel is suitable;
6. acetic fermentation: the initial pH value of adjusting jujube juice alcohol fermentation liquid is 3.0-3.5, and initial alcoholic strength is 5.5-6.0%.Insert acetic acid bacteria, adopt liquid shaker fermentation method, shaking speed is 180r/min, and fermentation temperature is set at 32-36 ℃, and inoculum concentration is 10-12%, and liquid amount is the 40-45% of reaction vessel; Acetic fermentation records jujube vinegar total acid content 41.3-45.7g/L after finishing;
7. clarification: jujube vinegar places 95 ℃ of heating 2~3min down, is cooled to normal temperature then, the diatomite suction filtration with 3%, and after realizing clarifying, (95 ℃, 10min) mode is carried out sterilization to jujube vinegar to adopt high temperature, short time.This moment, the alcoholic strength of jujube vinegar was 6.5-7.5%;
8. allotment: red date vinegar 10-14%, jujube juice 12-16%, honey 0.6-0.8%, albumen sugar 1.2-1.6%, ethyl maltol 0.04-0.06%, all the other are pure water.Wherein jujube juice is the above-mentioned the 4. centrifugal gained supernatant in the step;
9. filter, sterile filling: adopt cross-flow filtration, carry out then bottling behind the sterile filling;
Raw materials for production of the present invention can be ropy, even any or several mixing in the leftover bits and pieces pericarp of fruit processing factory, fruit bits, core etc.
The present invention allocates in the link can select other allotment raw materials according to different taste and local flavor demand;
The preferred raw materials for production of the present invention are the Hami date, and moisture is 16~20% in its extra dry red wine date fruit; Total sugar content is higher, reaches 15~17%; Content of reducing sugar is also higher, reaches 11~12%.
The present invention uses of the new technology on original traditional handicraft basis, adopts super-pressure auxiliary enzymes solution, has not only improved the red date crushing juice rate, also shortens working hours; Adopt liquid shaker fermentation method, shorten fermentation time, help having reduced enterprise's production cost, increase economic efficiency.In addition, through optimizing the allotment scheme, solved the single problem of taste.It is good, sour-sweet moderate tasty and refreshing that the jujube-acetic acid beverage that the present invention produces has mouthfeel, beverage clear, fruit thick flavor, the characteristics that taste is soft.
The specific embodiment
The invention will be further described for the following examples, but do not limit the present invention in any way.
Embodiment 1
Claim to select extra dry red wine jujube 10kg, remove the grain that goes mouldy, damages by worms, water drains after cleaning.Red date after draining needs to smoke with jujube meat and shrink through baking, and fructus corni is little to split, and the burnt phenomenon of sticking with paste does not take place, and finished color is unlikely too deeply for well.90 ℃ of baking temperatures, stoving time 50min; The running water that will add 40kg through the extra dry red wine jujube of overbaking soaks, make its flesh cell tissue fully expand, softening after, the running water that adds 20kg again heats the stewing 15min that boils, to fructus corni break, pulp is soft rot till.Again with its making beating, degree of fragmentation to be destroying jujube nuclear for good, and making beating back gained jujube slurry weight is about heavy 5 times of dried jujube; Adopt super-pressure auxiliary enzymes solution, the pull an oar red date pulp of gained of boiling is added extra-high tension unit and carries out preliminary treatment, and the pressure design value is 400MPa, adds pectase 0.02kg behind the preliminary treatment 25min, setting hydrolysis temperature simultaneously is 45 ℃, enzymolysis time 3h (during every 1h stir 1min).Behind the enzymolysis with the red date pulp at the centrifugal 5min of 4000r/min, collect supernatant and promptly get jujube juice, the mensuration content of reducing sugar is 96.7g/L; The soluble solid content of jujube juice is transferred to 14%, and through 121 ℃ of sterilization 15min, Angel wine yeast and lactic acid bacteria are inserted in the cooling back, and inoculative proportion is 3: 2, and total inoculum concentration is 3%; The jujube juice that inoculation is good carries out alcoholic fermentation, and fermentation temperature is set at 28 ℃, and fermentation time is set at 7d.After alcoholic fermentation finished, recording red wine liquid alcohol content was 7.2%, and content of reducing sugar is 13.2g/l.The initial pH value of adjusting jujube juice alcohol fermentation liquid is 3.2, and initial alcoholic strength is 6.0%.Access separates the acetic acid bacteria that obtains from the vinegar unstrained spirits of vinegar factory, adopt liquid shaker fermentation method, and shaking speed is 180r/min, and fermentation temperature is set at 32 ℃, and inoculum concentration is 10%, and liquid amount is 40% of a reaction vessel; Acetic fermentation records jujube vinegar total acid content 41.5g/L after finishing; Jujube vinegar is placed 95 ℃ of heating 2min down, be cooled to normal temperature then, the diatomite suction filtration with 3% is realized clarification; The employing high temperature, short time (95 ℃, 10min) mode is carried out sterilization to jujube vinegar, and alcoholic strength is 7.0%; Get red date vinegar 100ml, jujube juice 120ml, honey 6ml, albumen sugar 12ml, ethyl maltol 0.4ml, all the other are pure water, allocate; Adopt cross-flow filtration, carry out then bottling behind the sterile filling.
The described raw materials for production of present embodiment can be ropy, even any or several mixing in the leftover bits and pieces pericarp of fruit processing factory, fruit bits, core etc.
Embodiment 2
Claim to select extra dry red wine jujube 20kg, remove the grain that goes mouldy, damages by worms, water drains after cleaning.Red date after draining needs to smoke with jujube meat and shrink through baking, and fructus corni is little to split, and the burnt phenomenon of sticking with paste does not take place, and finished color is unlikely too deeply for well.90 ℃ of baking temperatures, stoving time 60min; The running water that will add 80kg through the extra dry red wine jujube of overbaking soaks, make its flesh cell tissue fully expand, softening after, the running water that adds 40kg again heats the stewing 15min that boils, to fructus corni break, pulp is soft rot till.Again with its making beating, degree of fragmentation to be destroying jujube nuclear for good, and making beating back gained jujube slurry weight is about heavy 5.5 times of dried jujube; Adopt super-pressure auxiliary enzymes solution, the pull an oar red date pulp of gained of boiling is added extra-high tension unit and carries out preliminary treatment, the pressure design value is 500MPa, pretreatment time is to add pectase 0.06kg behind the 30min, setting hydrolysis temperature simultaneously is 45 ℃, enzymolysis time 4h (during every 1h stir 1min).Behind the enzymolysis with the red date pulp at the centrifugal 5min of 4000r/min, collect supernatant and promptly get jujube juice, the mensuration content of reducing sugar is 98.2g/L; The soluble solid content of jujube juice is transferred to 16%, and through 121 ℃ of sterilization 15min, Angel wine yeast and lactic acid bacteria are inserted in the cooling back, and inoculative proportion is 3: 2, and total inoculum concentration is 3%; The jujube juice that inoculation is good carries out alcoholic fermentation, and fermentation temperature is set at 28 ℃, and fermentation time is set at 8d.After alcoholic fermentation finished, recording red wine liquid alcohol content was 7.4%, and content of reducing sugar is 14.5g/l.The initial pH value of adjusting jujube juice alcohol fermentation liquid is 3.5, and initial alcoholic strength is 6.0%.Access separates the acetic acid bacteria that obtains from the vinegar unstrained spirits of vinegar factory, adopt liquid shaker fermentation method, and shaking speed is 180r/min, and fermentation temperature is set at 32 ℃, and inoculum concentration is 10%, and liquid amount is 45% of a reaction vessel; Acetic fermentation records jujube vinegar total acid content 43.5g/L after finishing; Jujube vinegar is placed 95 ℃ of heating 2min down, be cooled to normal temperature then, the diatomite suction filtration with 3% is realized clarification; The employing high temperature, short time (95 ℃, 10min) mode is carried out sterilization to jujube vinegar, and alcoholic strength is 7.4%; Get red date vinegar 120ml, jujube juice 140ml, honey 8ml, albumen sugar 14ml, ethyl maltol 0.6ml, all the other are pure water, allocate; Adopt cross-flow filtration, carry out then bottling behind the sterile filling.
The described raw materials for production of present embodiment can be ropy, even any or several mixing in the leftover bits and pieces pericarp of fruit processing factory, fruit bits, core etc.