Summary of the invention
The object 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 in mass ratio, 100% Carthaginian apple raw juice: vitamin C: citric acid=1000: 0.1~0.3: 1~3.
Described 100% Carthaginian apple raw juice is with the whole fruit making beating of pomegranate, centrifugal rear acquisition.
A kind of preparation method of juice of my pomegranate, concrete operation step is as follows:
(1) take without go rotten, the pomegranate of insect pest and damage is as raw material, drain and use broken fruit crusher machine after will raw material cleaning, then 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% Carthaginian apple raw juice;
(2) add vitamin C and citric acid to allocate in 100% Carthaginian apple raw juice, wherein, 100% Carthaginian apple raw juice: vitamin C: citric acid=1000: 0.1~0.3: 1~3; Then use the homogenizer homogeneous, vacuum degassing machine is degassed, canned seal with vacuum sealer afterwards;
(3) with packaged juice of my pomegranate with food ultra high pressure treatment machine sterilising and enzyme inactivating, condition is: under normal temperature with 200~600MPa ultra high pressure treatment, 60~300s.
Described raw material cleans and refer to that water fully soaks pomegranate, cleans up fruit with fruit washing machine after absorbing 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 during vacuum seal, the pumpdown time is preferably 20~30s, and the vacuum heat-seal time is preferably 2~4s.
The optimum condition of the described sterilising and enzyme inactivating of step (3) is 4~35 ℃ of lower 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 kept the beneficiating ingredient in the granatum, have promote the production of body fluid to quench thirst, desinsection, astringent or styptic treatment for spontaneous sweating, the puckery intestines of convergence, effects such as dysentery, antidiarrheal hemostasis only, also have health care; By suitable allotment (namely adding vitamin C and citric acid), some peculiar smell that made product eliminates prevents that effectively juice of my pomegranate from brown stain occuring 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 thermal sterilization technique 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.Due to the destruction that there is no heat, super-pressure processing has well kept the various nutriments in food.For example after ultra high pressure treatment, the content of the nutriments such as vitamin C can not change substantially.Simultaneously, because ultra high pressure treatment technique bactericidal effect is good, need not to add food preservative, the security of product is significantly improved than the conventional method converted products, enlarged consumer groups.In addition, the super-pressure process technology need not to consume heat energy, has greatly saved production cost.
The specific embodiment
Embodiment 1
The process chart of the present embodiment is referring to Fig. 1.Specific as follows:
(1) choosing fruit: choose the pomegranate raw material fruit without mildew and rot, 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) making beating: 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, in fruit juice after separation without the suspension bulky grain, wherein, centrifuge is continous way, can continuous feed separate, the fruit juice that obtains after centrifugal is 100% Carthaginian apple raw juice;
(6) allotment: add 200 milligrams of vitamin Cs and citric acid 2 gram allotments by every 1 kilogram of 100% Carthaginian apple raw juice, fully mix;
(7) homogeneous: under the 22Mpa condition, use the homogenizer homogeneous, fruit juice is presented thick uniformly;
(8) degassed: degassed with vacuum degassing machine, the gas in fruit juice can be removed, and some peculiar smell can be eliminated, wherein, vacuum outgas pressure is 0.01MPa;
(9) canned: as after polyethylene soft cup tank, to seal with vacuum sealer;
(10) ultra high pressure treatment: process 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: use 400MPa ultra high pressure treatment 180s under normal temperature;
(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 after refrigeration, local flavor is better, can directly eat after opening bag.Concrete physics and chemistry and the microbiological indicator of check see Table respectively 1 and 2.
Wherein, the Vitamin C content of 100% Carthaginian apple raw juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 1 is compared, can find, before and after ultra high pressure treatment in juice of my pomegranate the content of various vitamins substantially constant.
Can find out from the result of table 1 and 2, fresh juice of my pomegranate is through ultra high pressure treatment, the indexs such as soluble solid, total acidity, vitamin are all near new fruit drink level, the conservation rate of all kinds of nutrients is significantly higher than similar thermal sterilization product, product has kept original bright distinctive local flavor of juice of my pomegranate that presses, product health after 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 |
[0038]
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 |
/ |
Nothing |
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) in embodiment 1 into every 1 kilogram of 100% Carthaginian apple raw juice and add 100 milligrams of vitamin Cs and citric acid 1 gram, the treatment conditions of step (10) change under 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 |
[0045]
Arsenic |
mg/kg |
≤0.2 |
Plumbous |
mg/kg |
≤0.5 |
Food preservative |
/ |
Nothing |
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 Vitamin C content of 100% Carthaginian apple raw juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 3 is compared, can find, before and after ultra high pressure treatment in juice of my pomegranate the content of various vitamins substantially constant.
The present embodiment is compared with embodiment 1, and ultra high pressure treatment pressure is slightly high, so equipment loss more greatly; Although 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) in embodiment 1 into every 1 kilogram of 100% Carthaginian apple raw juice and add 300 milligrams of vitamin Cs and citric acid 3 grams, the treatment conditions of step (10) change under 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 |
[0054]
Cobastab
1 |
mg/kg |
0.5 |
Cobastab
2 |
mg/kg |
0.3 |
Arsenic |
mg/kg |
≤0.2 |
Plumbous |
mg/kg |
≤0.5 |
Food preservative |
/ |
Nothing |
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 Vitamin C content of 100% Carthaginian apple raw juice is 100-150mg/kg, Cobastab
1Be 0.5mg/kg and Cobastab
20.3 be mg/kg.Result with table 5 is compared, can find, before and after ultra high pressure treatment in juice of my pomegranate the content of various vitamins substantially constant.
The present embodiment is compared with embodiment 1, dwell time is slightly long, operating pressure is lower slightly, its Germicidal Efficacy meets national standard, but the microorganism residual quantity of the present embodiment is higher than embodiment 1, and the enzyme such as PPO and POD killing effect is not as embodiment 1, in general, utilizes the shelf-life of the juice of my pomegranate that the present embodiment method obtains a little less than embodiment 1.