CN102048227B - Low-temperature aseptic storage method for high-capacity apple juice concentrate tank group - Google Patents

Abstract

The invention discloses a low-temperature aseptic storage method for a high-capacity apple juice concentrate tank group, which comprises the process steps of: processing and installing the high-capacity tank group; preparing a cleaning in place (CIP) pipeline for cleaning high-capacity tanks; cleaning the high-capacity tank group; sterilizing; filling juice; performing low-temperature aseptic storage on the high-capacity tank group and the like. The high-capacity juice storage tanks are integrated with an air aseptic filter, so that the asepsis can be directly realized without substances such as liquid nitrogen, the product storage effect is good, and the storage cost is reduced by over 50 percent.

Description

The storage procedures of the big capacity tank battery of a kind of concentrated apple clear juice cryogenic sterile

Technical field:

The present invention relates to the fruit juice processing technique field, is the big capacity tank battery of a kind of concentrated apple clear juice cryogenic sterile storage method specifically.

Background technology:

Development along with the apple processing industry; Concentrated apple juice has become the main processing variety of apple, sees from the packing trend of inspissated juice, for practicing thrift a large amount of accumulatings and packing cost; The individual packaging capacity has increasing trend; Adopt jumbo liquid bag packing to become international new trend, product adopts sterile manner injection aseptic big jar through sterilization through needing after the sterilization, can realize the aseptic storage of products such as concentrated apple juice, concentrated pear juice; Especially be direct can liquid bag service, thereby reduce packing, storage cost greatly.General employing sterile packing (275kg, 280kg), BIN pack (1.5T, 1.65T) at present, make accumulating and packing cost increase; Big capacity jar is when practicing thrift storage cost, if do not adopt aseptic storage then the microbiological contamination probability significantly improves; Also have in addition modes such as big jar of employing topping up nitrogen or CO2 are solved, really do not realize the reduction of cost.

Summary of the invention:

The objective of the invention is to overcome the deficiency of above-mentioned prior art, and the storage procedures of the big capacity tank battery of a kind of concentrated apple clear juice cryogenic sterile is provided, mainly solve the problem such as storage cost height, the raising of microbiological contamination probability of existing concentrated apple clear juice.

In order to achieve the above object, the present invention is achieved in that the storage procedures of the big capacity tank battery of a kind of concentrated apple clear juice cryogenic sterile, and it comprises the steps:

The processing of the big tank battery of a and installation: establish fruit juice at each tank deck of big tank battery and advance a jar mouth; Flow out fruit juice below; Fruit juice gets into each pipeline of big jar and walks pipe separately; Pipeline in fruit juice gets into jar extends to the big jar of end, has the pneumostome of DN100 big jar upper cone one side, and aseptic air filter directly is installed;

The CIP pipeline that the big jar of b cleans: the CIP pipeline is walked pipe separately, and independent operating independently carries out cleaning and sterilizing to each jar, the pipeline exit mounting filtering net in CIP master station, and 360 ° of CIP shower nozzle employings are rotary;

The cleaning of the big tank battery of c, sterilization: carry out CIP and clean, alkali liquid temperature is 50-60 ℃, concentration of lye 2-5%, and wash cycles 1 hour, advancing jar flow velocity during cleaning is 60m ³/ h; Wash 20 minutes to pH≤7 with condensed water or reverse osmosis water then; Carry out disinfection; Big jar after the cleaning is again with chlorine dioxide disinfection liquid circulation discharging after 15 minutes of the 100ppm of reverse osmosis water preparation; After racking up, thimerosal closes a batch jar outlet valve immediately, the also timely valve-off after emptying pipe discharging of the water in the CIP pipeline;

D fruit juice gets into: batch jar should get into fruit juice in 30 minutes behind disinfection by chlorine dioxide;

The big tank battery cryogenic sterile of e is stored: fruit juice drops to the fruit juice temperature about 6-8 ℃ before crust gets into big jar extremely, to guarantee the fruit juice colour, squeezes in the big jar of freezer again and stores; The temperature of freezer should be controlled at 0-4 ℃.

Aseptic control in the juice tank process of assembling and the influence of storage microbiological indicator, test as follows:

Spiracle on the big capacity jar adopts the air cleaner of 0.003 μ m to seal, and prevents that fruit juice from polluting, and storage temperature is 0-4 ℃.

After storing different time, the microorganism in the inspissated juice in the big capacity jar of installing and do not install aseptic air filter on the spiracle is detected, the result sees table 1.

Table 1

Can find out that from table 1 aseptic air filter of 0.003 μ m is installed on the spiracle, and fruit juice is after storing 2 months to 10 months in the big capacity jar, its total number of bacteria, mould saccharomycete number average are lower than 1cfu/mL.And fruit juice its total number of bacteria, the mould saccharomycete number average when storing 2 months on spiracle, installed in the big capacity jar of air cleaner are lower than 1cfu/mL; But in period of storage subsequently; Along with the prolongation of period of storage, total number of bacteria, mould saccharomycete number average in the fruit juice significantly increase.

Follow the tracks of No. 801 jar, the fruit juice of No. 801 jars is walked goods after storing 10 months, in the pouring process, each small batch is got three samples continuously carry out microorganism detection, and the result sees table 2.Can find out that from table fruit juice kills (98-102 ℃, 30s) through crust and gets into big jar that aseptic air filter is housed, it is aseptic effectively to control jar interior fruit juice.

Table 2

Batch number	Detection time	Total number of bacteria (cfu/mL)	Mould & saccharomycete (cfu/mL)
				801-1	080715	＜1	＜1
801-2	080715	＜1	＜1
				801-3	080715	＜1	＜1
801-4	080715	＜1	＜1
				801-5	080715	＜1	＜1

Practical application effect: table 3 is seen in the variation of storing juice quality index in the big capacity jar in back.

Table 3

Conclusion: adopt cleaning, sterilization, the aseptic storage technology of big capacity tank battery, product index can reach the storage effect of sterile, BIN packing.

Compared with present technology the storage procedures of the big capacity tank battery of a kind of concentrated apple clear juice of the present invention cryogenic sterile has outstanding substantive distinguishing features and marked improvement: 1, fruit juice is stored big capacity jar and the combination of sterile air filter, make materials such as not adding liquid nitrogen just can directly realize aseptic; 2, adopt cleaning, sterilization, the aseptic storage technology of big capacity tank battery, product index can reach the storage effect of sterile, BIN packing, and storage effect is good; 3, adopt the present invention, the storage cost of inspissated juice reduces more than 50%.

The specific embodiment:

Embodiment 1; The first step is carried out the processing and the installation of big tank battery: select corrosion resistant plate for use; Being undertaken big jar by QB/T2681-2004 (the stainless steel thin-wall container is used in food industry) makes, checks and check and accept; Big tankage size is designed to one group of 8 jar according to maximum usable floor area of freezer and production requirement, and the capacity of each jar is the 245T inspissated juice, and big jar is designed to 180m ³Juice tank, total volume 181m ³(not containing upper cover); For making the space availability ratio of freezer maximum, increase big jar capacity and storage capacity, make full use of the storehouse volume, big jar is adopted the upper end to get into fruit juice, and promptly fruit juice advances jar mouthful at tank deck, flows out fruit juice below; In order to realize that every big jar can be with stepping fruit juice, fruit juice gets into each pipeline of big jar and walks pipe separately; In order to prevent the fruit juice generation bubble that splashes, directly influence the colour of fruit juice, the pipeline in fruit juice gets into jar extends to the big jar of end, prevents microbiological contamination simultaneously; Have the pneumostome of DN100 big jar upper cone one side; Aseptic air filter (storage tank breathing circuit filter) directly is installed; This filter can effectively be dispeled microorganisms such as bacterium contained in the ullage gas, mould and saccharomycete for adopting 0.003 μ m PTFE filter membrane; This filter operation pressure is normal pressure, can adopt moise-heat sterilization;

Second step installed big jar and cleans required CIP pipeline: influence the ordinary production demand for effectively preventing fruit juice because of cross pollution or because of pipeline blocks up; Require CIP to clean and in fruit juice charging or discharging, to carry out cleaning and sterilizing other jars; Therefore the CIP pipeline is walked pipe separately, can independently carry out cleaning and sterilizing to each jar; Be that the CIP pipeline is walked pipe, independent operating separately; For preventing that the shower nozzle eye from stopping up, in the pipeline exit of CIP master station 200 purpose screen packs are installed, hold back the impurity that possibly occur in the cleaning fluid, guarantee that the shower nozzle eye is in unimpeded state all the time;

Adopt 360 ° of rotary CIP shower nozzles, prevent to produce and clean the dead angle, guarantee the cleaning and sterilizing effect;

The 3rd step was carried out cleaning, the sterilization of big tank battery: carry out CIP and clean, cleaning object comprises big capacity jar, fruit juice turnover pipeline, adopts the NaOH solution of 2-5% to clean; Temperature is 50-60 ℃; Concentration 2%, wash cycles 1 hour, advancing jar flow velocity during cleaning is 60m3/h; Wash 20 minutes to pH≤7 with condensed water or reverse osmosis water then;

Carry out disinfection; Big jar after the cleaning is again with chlorine dioxide disinfection liquid circulation discharging after 15 minutes of the 100ppm of reverse osmosis water preparation; After racking up, thimerosal closes a batch jar outlet valve immediately, the also timely valve-off after emptying pipe discharging of the water in the CIP pipeline;

The 4th step fruit juice gets into: batch jar should get into fruit juice in 30 minutes behind disinfection by chlorine dioxide;

The 5th step, big capacity tank battery cryogenic sterile was stored: fruit juice drops to the fruit juice temperature about 6-8 ℃ before crust kills (98-102 ℃, 30s) and gets into big jar, stores to guarantee that the fruit juice colour is squeezed in big jar of the freezer again; The temperature of freezer should be controlled at 0-4 ℃.

Claims (1)

1. the big capacity tank battery of concentrated apple clear juice cryogenic sterile storage procedures, it comprises the steps:

The processing of the big tank battery of a and installation: establish fruit juice at each tank deck of big tank battery and advance a jar mouth; Flow out fruit juice below; Fruit juice gets into each pipeline of big jar and walks pipe separately; Pipeline in fruit juice gets into jar extends to the big jar of end, has the pneumostome of DN100 big jar upper cone one side, and aseptic air filter directly is installed;

The CIP pipeline that the big jar of b cleans: the CIP pipeline is walked pipe separately, and independent operating independently carries out cleaning and sterilizing to each jar, the pipeline exit mounting filtering net in CIP master station, and 360 ° of CIP shower nozzle employings are rotary;

The cleaning of the big tank battery of c, sterilization: carry out CIP and clean, alkali liquid temperature is 50-60 ℃, concentration of lye 2-5%, and wash cycles 1 hour, advancing jar flow velocity during cleaning is 60m ³/ h; Wash 20 minutes to pH≤7 with condensed water or reverse osmosis water then; Carry out disinfection; Big jar after the cleaning is again with chlorine dioxide disinfection liquid circulation discharging after 15 minutes of the 100ppm of reverse osmosis water preparation; After racking up, thimerosal closes a batch jar outlet valve immediately, the also timely valve-off after emptying pipe discharging of the water in the CIP pipeline;

D fruit juice gets into: batch jar should get into fruit juice in 30 minutes behind disinfection by chlorine dioxide;

The big tank battery cryogenic sterile of e is stored: fruit juice drops to the fruit juice temperature about 6-8 ℃ before crust gets into big jar extremely, to guarantee the fruit juice colour, squeezes in the big jar of freezer again and stores; The temperature of freezer should be controlled at 0-4 ℃.