generally regarding the Palm dates processing line, we will follow the process, washing---> pre-cooking--> pulping and destoning--> juice storage--> juice mesh filter--> juice membrane filter( or maybe there will be another filter stage needed)--> evaporting or concentrating -->pasteurizing--filling.
Date syrup can be considered one of the most innovative and attractive by-products in date processing. Especially in the Middle East and in the North African countries, date syrup is used as a substitute for honey or other similar sweeteners, as well as in confectionary and drinks. Bertuzzi date processing machinery is designed for producing syrup either from fresh or dried dates. In the soaking tanks, equipped with stirrer and outfeed screw, the dates are re-hydrated.
Depending on the required capacity, the de-soaked dates are sent either to our stoning machine SuperCreamer or JumboCreamer, guaranteeing a clean separation of stones from pulp and syrup.
Before the product is filtered, we pasteurize it in our plate heat exchanger ThermoFlash. The unit is manufactured in several sizes and can be mounted on skid. The date syrup is clarified by vacuum rotating filters with Kieselguhr pre-coat. As alternative to the vacuum filter ultrafiltration can be used.
Optionally, syrup can be concentrated. Our three effects plate evaporator Flashterm is suitable to concentrate date syrup from 18 to 72° Brix.
Date syrup can be sterilizied or pasteurized depending by the specific request of the application by a sterilizer/pasteurizer plate sterilizer/pasteurizer.
Once sterilized the product can be filled in aseptic bag in drums or in box
Palm dates;dry dates;fresh dates;jujube; hawkthorn etc.
Aseptic bag/glass bottle/PET bottle/Bucket
complete set of processing line on the basis of turnkey project
Jujube juice extracting system
The jujube extracting process is the core processing in the jujube juice and syrup prcessing line,it mainly includes two steps:hot water extrction and adding enzyme preparation for enzymolysys.The jujube juice yield rate is 55%-60% with these two methods applied.
Hot water extraction: This process is carried out in the SUS304 extraction tank,the jujube pulp and 70°C hot water ratio are 1:3 in the extraction tank,the PH is adjusted to 6.0±0.2,then start the stir to blending for 2 hours.After heating the slurry was filtered through a vibrate screen filter to remove large impurities and insoluble matters.
Enzmatic hydrolysis:Pectinase and cellulose enzyme preparations were added at the rate of 1% for each on a date pulp weight basis in the enzymatic hydrolysis tank.The mixture of date pulp,water and enzyme preparations are mixed carefully and incubated at 50±2°C for 2 hours with a continuous blending.The date juice extraction system results in a main product(date juice)and a by-product(presscake).Crude juice contains soluble and insoluble solids as well as foreign matter.
Date juice clarification system
Several technologies have been employed for clarification of date juice,such as juice pretreatment by boiling,precipitating or hydrolyzing colloids by enzyme,removing insoluble foreign matters by means of filtration or centrifugation,decolorrization using activated carboon or ion exchange,removing the minerals using chemicals or ion exchange,and removing high molecular weight compounds by foaming.The mature technology is that the jujube juice is first filtered through a plate and frame filter,and then use the ultrafiltation system to filter it twice,so that we get a clarified jujube palm juice.
Jujube syrup concentration system
Après raffinage et filtration, du jus de jujube avec une teneur en solides solubles de 20 à 25 % sera obtenu, qui doit être concentré. La teneur en solides solubles la plus courante du sirop de jujube est de 75 %. L'évaporateur à film tombant est appliqué pour concentrer le jus de datte. au sirop de jujube.
Machine de remplissage de sirop de jujube
Le sirop de jujube après concentration, puis refroidi à 30 ° C et rempli dans les bouteilles ou les boîtes métalliques. Comme le sirop ne pasteurise pas, pour prolonger la durée de conservation, la machine de remplissage sous vide est suggérée.