The Processing Technology Research Of Dates Products

This paper studies the dates products deep-processing technology, won the jujube juice concentratecooking temperature and the ratio of water, hydrolysis time, extraction temperature, enzyme dosage, pHand other parameters, obtained by orthogonal experiment enzymatic extraction of the most good conditions,eventually combined with the current proven ultrafiltration technology and macroporous resin adsorptionbleaching technology, access to qualified stable concentrated jujube juice products By cooking dates,enzymatic hydrolysis, filtration juice, the resulting residue and jujube produces jujube film recyclingproducts, access to the type of adhesive sheet dates, as well as the ratio of baking time and other parameters,and in the formulation Add apricot sauce, to give products rich fruit and sparkling resilient and date slicesobtained by orthogonal experiment the optimum conditions; through research dates with several otheredible gum complex preparation obtained by mixing glue with good gelation, tough elastic, refreshing, etc.,so that the quality of grain jujube pulp has greatly improved, while the addition of the starch in the mixedgel, make flesh taste and better quality grain. The use of more complex adhesive polysaccharides principleof synergies, mixed micelles obtained by orthogonal optimum ratio can not add an alkaline reagent forms agel under conditions, to meet all the conditions of production of pulp particle.The main results are as follows:(1) This paper dates as raw material, jujube juice concentrate production process were studied. Thebest pre-determined dates cooking conditions were: pre-cooked temperature of100℃, blanching time16min, water ratio1:7; determine the dates for the enzymatic method of extracting juice extraction,enzymatic extraction The optimum conditions were: enzyme dosage:25mg/kg, pH value of3.0, reactiontime2.5h, hydrolysis temperature of50℃. Under the conditions in the extraction rate of64.94%can beachieved.(2) Date sheet for the more popular the market is now a new class of processed foods, dates, sweet andsour taste, convenience food, nutritional value is also high. Date of the test to Ruoqiang ash as raw material,add appropriate amount of fructose syrup, citric acid, starch and agar mixture brewed additives such dateafter the film is made by drying. The results show that the date for the film production process optimization:14%addition level fructose syrup, citric acid:0.4%, potato starch:4%, agar:1%, date film residue:0.5%,apricot sauce:4%, ethyl maltol:0.01%.(3) This paper focuses on processing technology of jujube pulp particles was studied by single-factorexperiment, experiment, with the sensory evaluation method to determine the optimum process parameters.Experimental results show that the cooking water ratio1:7dates, time,16min; mixed glue used the amountof carrageenan and xanthan gum,1.8%carrageenan and xanthan gum in which the ratio of8:2; sugarcontent of15%; adding acid0.25%; cooked gel time4min; baking time5h, producing the best productquality, flavor the most significant.