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The Shell Polyose Processes To The Chinese Chestnut Physiology And Stores The Effect Influence

Posted on:2009-12-23Degree:MasterType:Thesis
Country:ChinaCandidate:L LiFull Text:PDF
GTID:2143360272465747Subject:Food Science
Abstract/Summary:PDF Full Text Request
This article take the Henan true mountain products "firmly the red chestnut" as the experimental object, after the research uses hot sour water bath processing, to the Chinese chestnut carries on the shell polyose paint film, then uses the LDPE packing, puts in (0±1)℃in the environment refrigerates, by determined that the different hot acid solution the temperature, the water bath time, solution pH, the acidity chemical additive and the material fluid compare to the Chinese chestnut quality influence; Then to uses the shell polyose solution to conduct the research to the Chinese chestnut paint film effect, below the definite paint film medicinal preparation's density and the temperature, then the choice suits thickness, the experiment obtains the main result:1. After the Chinese chestnut picks, uses hot sour water bath processing, may good maintain its original flavor and the feeling in the mouth, reduces the Chinese chestnut turning brown degree, stores the effect in the sense organ aspect to be good. The hot sour water bath's technological conditions are: The temperature 45℃, constant temperature time 40min, solution pH3.5, the acidity conditioner citric acid, the material fluid compare 1:12. In shell polyose fluid film processing, uses 1.5% shell polyose processing to store the effect to surpass density 1.0% and 2.0% processing. Uses 1.5% densities shell polyose processing to be possible obviously to suppress the Chinese chestnut stores the period the breath intensity, cuts the starch hydrolisis speed, the extension stores the time. The experiment proved that shell polyose paint film fluid temperature take 50℃as suitable, both may become the membrane effectively, and will not store the quality to the Chinese chestnut to have the adverse effect, has suppressed the starch enzyme activity well, will reduce the starch hydrolisis speed, will maintain Chinese chestnut own anti-senile ability3. Chinese chestnut after hot sour water bath processing, shell polyose paint film uses the LDPE packing, suppressed the Chinese chestnut breath intensity to elevate well, maintains the Chinese chestnut water content. And in suppresses the respiratory rate aspect to be best by the 0.05mm thickness, but at maintains the water content, reduces the soluble sugar content aspect, between different thickness LDPE does not have the significance difference. The test result indicated that uses the 0.05mmLDPE packing during guarantee Chinese chestnut normal physiology metabolism, suppressed SOD, CAT, the POD activeness to drop, lengthened the Chinese chestnut shelf life 4. The shell polyose membrane's gas adjustment environment and the LDPE packing membrane's gas adjustment environment superimposes, is suppressing the fruit breath intensity, the reduction nutrients consumption, the reduced moisture content transpiration to lose, to maintain the sense organ quality aspect has the good effect.5. Shell polyose processing easily has the operation, to maintain freshness the effect well, to store the cost low status characteristic. This experiment not and germinates to Chinese chestnut's corrupting conducts the research, regarding this will wait for conducting the research from now on...
Keywords/Search Tags:Chestnut, Storage, Chitosan, Physiological effects
PDF Full Text Request
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