Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of prior art, a kind of juice of my pomegranate is provided.
Another object of the present invention is to provide the preparation method of above-mentioned juice of my pomegranate.
A kind of juice of my pomegranate, this juice of my pomegranate mixes following component by mass ratio, 100% pomegranate Normal juice: vitamin C: citric acid=1000: 0.1~0.3: 1~3.
Described 100% pomegranate Normal juice obtains the whole fruit making beating of pomegranate, centrifugal back.
A kind of preparation method of juice of my pomegranate, the concrete operations step is as follows:
(1) pomegranate of, insect pest mildew and rot not have and damage is a raw material, drains after will raw material cleaning and with broken fruit crusher machine, again with broken fruit making beating, deslagging, gets juice, then by centrifugal with the separation of juice slag, the fruit juice that obtains after centrifugal is 100% pomegranate Normal juice;
(2) adding vitamin C and citric acid are allocated in 100% pomegranate Normal juice, wherein, and 100% pomegranate Normal juice: vitamin C: citric acid=1000: 0.1~0.3: 1~3; Use the homogenizer homogeneous then, the vacuum degassing machine degassing, seal with vacuum sealer canned back;
(3) packaged juice of my pomegranate is used food ultra high pressure treatment machine sterilising and enzyme inactivating, condition is: normal temperature is down with 200~600MPa ultra high pressure treatment, 60~300s.
Described raw material cleans and is meant that water fully soaks pomegranate, with fruit washing machine fruit is cleaned up after waiting to absorb moisture.
The preferred high-quality pomegranates produced in Xinjiang Uygur autonomous of raw material of the present invention.
The centrifugation rate that described juice slag separates is preferably 8000r/min, and the fruit juice homogenization pressure is preferably 22Mpa, and vacuum outgas pressure is preferably 0.01MPa, and the pumpdown time is preferably 20~30s during vacuum seal, and the vacuum heat-sealing time is preferably 2~4s.
The optimum condition of the described sterilising and enzyme inactivating of step (3) is 4~35 ℃ of following 400MPa ultra high pressure treatment 180s.
The juice of my pomegranate that obtains as stated above is red clear liquid, has the original fragrance of pomegranate fruit, soluble solid content 〉=12, total acid (pressing citrometer) 〉=0.20%, pH value: 3.6~3.8.
Beneficial effect of the present invention: through the juice of my pomegranate sweet and sour taste of preparation method's acquisition of the present invention, delicate mouthfeel, natural faint scent with pomegranate, free from extraneous odour, various active ingredients contained in the pomegranate seed have not only effectively been kept, also keep the beneficiating ingredient in the granatum, had and promote the production of body fluid to quench thirst, desinsection, astringent or styptic treatment for spontaneous sweating, the puckery intestines of convergence, end effects such as dysentery, antidiarrheal hemostasis, also had health care; By suitable allotment (promptly adding vitamin C and citric acid), some peculiar smell that made product eliminates prevents that effectively juice of my pomegranate from brown stain taking place in storage, extend the shelf life, and this juice of my pomegranate can be suitable for the consumer group of all ages and classes, different sexes.
Preparation method of the present invention has also adopted the ultra high pressure treatment technology to carry out sterilising and enzyme inactivating, this technology has kept the distinctive local flavor of product to be processed, quality and fragrance, avoid giving birth to the cooked flavor that heat kill bacterium technology produces, make the food organoleptic attribute near fresh state, the juice of my pomegranate that adopts ultra high pressure treatment to cross, shelf-life at normal temperatures can reach about 12 months, reached or surpass the fruit juice product of conventional method processing fully.Owing to there is not the destruction of heat, super-pressure processing has well kept the various nutriments in the food.For example after the ultra high pressure treatment, concentrations of nutrient such as vitamin C can not change substantially.Simultaneously,, need not to add food preservative, security of products is significantly improved than the conventional method converted products, enlarged consumer groups because ultra high pressure treatment technology bactericidal effect is good.In addition, the super-pressure process technology need not to consume heat energy, has saved production cost greatly.
The specific embodiment
Embodiment 1
The process chart of present embodiment is referring to Fig. 1.Specific as follows:
(1) choosing fruit: choose do not have go rotten, the pomegranate raw material fruit of insect pest, damage;
(2) clean: water soaks pomegranate 1 hour, with automatic fruit washing machine above-mentioned fruit is cleaned up after making it absorb moisture, and fruit cleans three times at least;
(3) fragmentation: the pomegranate that will clean and drain the water is broken with the whole fruit of broken fruit machine;
(4) pull an oar: after broken fruit was pulled an oar with beater, deslagging was got juice;
(5) centrifugal: as pulp to be carried out the juice slag by centrifuge separate (interior pad 120 order nylon cloths), the centrifugation rate that scum juice separates is 8000r/min, no suspension bulky grain in the fruit juice after the separation, wherein, centrifuge is a continous way, can continuous feed separate, the fruit juice that obtains after centrifugal is 100% pomegranate Normal juice;
(6) allotment: add 200 milligrams of vitamin Cs and citric acid 2 gram allotments by per 1 kilogram of 100% pomegranate Normal juice, fully mix;
(7) homogeneous: under the 22Mpa condition, use the homogenizer homogeneous, it is thick uniformly that fruit juice is presented;
(8) degassing: with the vacuum degassing machine degassing, can remove the gas in the fruit juice, and can eliminate some peculiar smell, wherein, vacuum outgas pressure is 0.01MPa;
(9) canned: as behind polyethylene soft cup jar, to seal with vacuum sealer;
(10) ultra high pressure treatment: handle with food ultra high pressure treatment machine (model HHP-300L sends out high pressure technique Co., Ltd available from packet header section), can reach the sterilising and enzyme inactivating effect.Treatment conditions are: normal temperature is down with 400MPa ultra high pressure treatment 180s;
(11) check: check that product has or not breakage, the every batch of product random inspection microbiological indicator, physical and chemical index, the index of quality;
(12) vanning obtains finished product.
The juice of my pomegranate that said method obtains can preservation under room temperature about 12 months, and refrigeration back local flavor is better, can directly eat after opening bag.The concrete physics and chemistry and the microbiological indicator of check see Table 1 and 2 respectively.
Wherein, the Vit C contents of 100% pomegranate Normal juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 1 compares, and can find, the content of various vitamins is constant substantially in the juice of my pomegranate of ultra high pressure treatment front and back.
From the result of table 1 and 2 as can be seen, fresh juice of my pomegranate is through ultra high pressure treatment, indexs such as soluble solid, total acidity, vitamin are all near new fruit drink level, the conservation rate of all kinds of nutrients significantly is higher than similar heat kill bacterium product, product has kept original bright distinctive local flavor of juice of my pomegranate that presses, product health after the processing reaches GB 19297-2003, i.e. the requirement of " really, vegetables juice beverages health standard " simultaneously.
The physical and chemical index of the juice of my pomegranate that table 1 embodiment 1 makes
Project |
Measurement unit |
Index |
Soluble solid (20
℃, compound microcapsule)
|
% |
≥12 |
Total acidity (with citrometer) |
% |
≥0.20 |
Vitamin C |
mg/kg |
≥300 |
Cobastab
1 |
mg/kg |
0.5 |
Cobastab
2 |
mg/kg |
0.3 |
Arsenic |
mg/kg |
≤0.2 |
Plumbous |
mg/kg |
≤0.5 |
Food preservative |
/ |
Do not have |
The microbiological indicator of the juice of my pomegranate that table 2 embodiment 1 makes
Project |
Measurement unit |
Index |
Total plate count |
Individual/ml |
≤100 |
Coliform number |
Individual/100ml |
≤3 |
Pathogenic bacteria |
/ |
Must not detect |
Embodiment 2
Change the allotment ratio of step (6) among the embodiment 1 into 100 milligrams of per 1 kilogram of 100% pomegranate Normal juice adding vitamin Cs and citric acid 1 gram, the treatment conditions of step (10) change under the normal temperature with 600MPa ultra high pressure treatment 90s; Other operating procedures are identical with embodiment 1.The assay of the juice of my pomegranate that obtains sees Table 3 and 4.
The physical and chemical index of the juice of my pomegranate that table 3 embodiment 2 makes
Project |
Measurement unit |
Index |
Soluble solid (20
℃, compound microcapsule)
|
% |
≥12 |
Total acidity (with citrometer) |
% |
≥0.18 |
Vitamin C |
mg/kg |
≥200 |
Cobastab
1 |
mg/kg |
0.5 |
Cobastab
2 |
mg/kg |
0.3 |
Arsenic |
mg/kg |
≤0.2 |
Plumbous |
mg/kg |
≤0.5 |
Food preservative |
/ |
Do not have |
The microbiological indicator of the juice of my pomegranate that table 4 embodiment 2 makes
Project |
Measurement unit |
Index |
Total plate count |
Individual/ml |
≤100 |
Coliform number |
Individual/100ml |
≤3 |
Pathogenic bacteria |
/ |
Must not detect |
Wherein, the Vit C contents of 100% pomegranate Normal juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 3 compares, and can find, the content of various vitamins is constant substantially in the juice of my pomegranate of ultra high pressure treatment front and back.
Present embodiment is compared with embodiment 1, and ultra high pressure treatment pressure is slightly high, so equipment loss more greatly; Though the dwell time is slightly short, as a whole, single batch processing time still exceeds embodiment 130s, so efficient is lower slightly.
Embodiment 3
Change the allotment ratio of step (6) among the embodiment 1 into 300 milligrams of per 1 kilogram of 100% pomegranate Normal juice adding vitamin Cs and citric acid 3 grams, the treatment conditions of step (10) change under the normal temperature with 200MPa ultra high pressure treatment 240s; Other operating procedures are identical with embodiment 1.The assay of the juice of my pomegranate that obtains sees Table 5 and 6.
The physical and chemical index of the juice of my pomegranate that table 5 embodiment 3 makes
Project |
Measurement unit |
Index |
Soluble solid (20
℃, compound microcapsule)
|
% |
≥12 |
Total acidity (with citrometer) |
% |
≥0.22 |
Vitamin C |
mg/kg |
≥400 |
Cobastab
1 |
mg/kg |
0.5 |
Cobastab
2 |
mg/kg |
0.3 |
Arsenic |
mg/kg |
≤0.2 |
Plumbous |
mg/kg |
≤0.5 |
Food preservative |
/ |
Do not have |
The microbiological indicator of the juice of my pomegranate that table 6 embodiment 3 makes
Project |
Measurement unit |
Index |
Total plate count |
Individual/ml |
≤100 |
Coliform number |
Individual/100ml |
≤3 |
Pathogenic bacteria |
/ |
Must not detect |
Wherein, the Vit C contents of 100% pomegranate Normal juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 5 compares, and can find, the content of various vitamins is constant substantially in the juice of my pomegranate of ultra high pressure treatment front and back.
Present embodiment is compared with embodiment 1, dwell time is slightly long, operating pressure is lower slightly, its microorganism killing effect meets national standard, but the microorganism residual quantity of present embodiment is higher than embodiment 1, and enzyme such as PPO and POD killing effect is not as embodiment 1, and in general, the shelf-life of utilizing the juice of my pomegranate that the present embodiment method obtains is a little less than embodiment 1.