CN1568718A

CN1568718A - Fresh keeping technology for golden-silk jujube

Info

Publication number: CN1568718A
Application number: CN 200410037853
Authority: CN
Inventors: 李秀营
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-12
Filing date: 2004-05-12
Publication date: 2005-01-26

Abstract

The invention provides a method for storing fresh jujube, which comprises the steps of sterilizing and disinfecting with white spirit, sealing in coextruded film by means of vacuum-packing machine, thus inhibiting the moisture consumption by jujube fruit respiration action, and delaying the jujube fruit senility procedure.

Description

The golden jujube preservation technique

The technical field the storage of fresh jujube

Bright jujube is left intact under the background technology room temperature, promptly loses commodity value in 3-5 days.Golden jujube is 0 ℃ of temperature, relative humidity about 90%, and the inner wrapping storage is after 45 days, and good fruit rate is 60.6%-70.8%.Academy of agricultural sciences, Shanxi agricultural products storage and preservation research institute preserved 2-3 such as pear and date-printing blocks, wooden jujube months with " freezer (air-conditioned cold store)+bright jujube preservative specially+bright jujube fresh-keeping bag specially ", storage winter jujube etc. 3-4 month, and good really rate is 90%.Bent county, the Shanxi Province biological development corporation, Ltd. in benefit source can make various fruit in-6 ℃ of-35 ℃ of scopes with its fruits and vegetables normal temperature preservation technique, and is fresh-keeping more than 5 months.The academy of agricultural sciences, Shandong is with fresh-keeping of dong jujube activity " AB " solution of its initiative, and good fruit rate was 95% in fresh-keeping 4 months, and the longest freshness date is 6 months.Traditional wine is hidden preservation technique, golden jujube can be preserved 4-7 month, blemish in an otherwise perfect thing be the vitamin C loss totally.

Summary of the invention utilizes the composite plastic film bag to make freshness protection package, with half red golden jujube with the liquor sterilization after, be sealed in wherein with vacuum packing machine.At room temperature preserved 6 months 08 days, jujube fruit can still keep half red state, and moisture, nutritional labeling, active component and local flavor, brittleness, hardness are constant substantially, and good fruit rate reaches 100%.Golden jujube is in the vacuum bag of anoxic, anaerobic, and aerobic respiration is suppressed, through about ten days, and CO ₂Run up to a certain degree, anaerobic respiration also is suppressed, and has reduced nutrient consumption.Vacuum bag has prevented the evaporation activity of moisture, has solved bright jujube water loss problem.The sterilization effect of vacuum fresh-keeping bag and ethanol has suppressed the breeding of growing of pathogen, has controlled the generation of jujube fruit physiological disease, has reduced the fruit rot rate.The jujube fruit is vacuum, back CO formerly ₂Storage environment in, the activity of after-ripening enzyme is suppressed, and has avoided the generation of ethene, has delayed jujube fruit aging course, has kept hardness and the freshness of jujube fruit for a long time.The jujube fruit does not produce harmful material at duration of storage, does not have any pollution.On March 18th, 2004, Chinese National Supply and Marketing Cooperative General Agency Jinan fruits and vegetables and quality of item supervision and inspection center show the assay of having preserved 6 months 08 days the new No. 4 bright jujubes of spun gold: contain 79.2 milligrams of Catergens in every hectogram pulp.The Shandong TV Station reporter has carried out spot coverage to the verification test process that the expert carries out, and has carried out special report in Shandong satellite TV " rural monsoon " column on April 14th, 2004.The new No. 4 bright jujubes of identical with it another bag spun gold are now preserved in Shandong Fruit-tree Inst., and the vice president Guo Yuxin researcher of jujube association of Chinese forest association is continuing it is carried out fresh-keeping research.

The specific embodiment 1. raw materials are selected: get half red golden jujube, require harvesting, free from flaw, free from insect pests, nothing to rot.2. clean: with the clear water flushing, remove surface contaminants and impurity, it is standby to drain away the water.3. use the liquor sterilization: rinse per 50 kilograms of jujubes 1.5-2 kilogram liquor in the liquor of the bright jujube that will wash more than 50 degree.4. store: put into the composite plastic film bag immediately with the jujube that liquor was rinsed, carry out vacuum seal, In Shade preservation.Product at room temperature shelf life can reach more than half a year, and the jujube fruit is partly red all the time, and sweet-smelling is strong, crisp sweet pleasant.

Claims

Make freshness protection package with the composite plastic film bag, with half red golden jujube liquor sterilization, storage is after 6 months 08 days under the room temperature of vacuum-packed back, and good fruit rate reaches 100%, and the jujube fruit still is half red state, contains 279.2 milligrams of vitamin Cs in every hectogram pulp.With the vacuum bag bright jujube of Long-term Storage successfully, having broken through bright jujube can not be at anaerobic and high CO ₂The theory of Long-term Storage under the condition has been created golden jujube more than fresh-keeping half a year at room temperature, the world record that Vit C contents is the highest.

The scope of request patent protection is: make freshness protection package with the composite plastic film bag, after golden jujube liquor sterilization, vacuum packaging, carry out fresh-keeping processing and storage, marketing activity.