- black carrot extract is likely to replace food coloring cochineal. Under the new labeling requirements for the implementation of the United States, cochineal use will be limited. Cochineal is made of carminic acid, carminic acid and is primarily grown in South America cochineal insects body cactus grinding. These are well known, but this pigment may cause allergic reactions in some people. And this exemption as a pigment natural pigments, manufacturers have been labeled as "color added" on the label.
At present, many types of products are used to make this pigment, such as ice cream, yogurt, juice drinks, alcoholic beverages and confectionary products, it will make the product appear pink, red or purple. Color carrot extract can help manufacturers to price and supply problems Carmine process. Natural pigments, like carrots and black pepper extract that can range into the red cochineal provide relevant food and beverage in pink color is the natural alternative.
Membrane separation technology in the 1990s after the rapid rise of a new separation technique, is that unlike the conventional filters, membranes may be isolated in the molecular range, and this process is a physical process, without the occurrence of phase change and adding additives, it has been widely used in the separation and purification of concentrated food, medicine, biology, and environmental protection industries.
The advantages of the use of membrane separation technology, the success of membrane separation technology combined with traditional extraction, separation, concentration process, the traditional craft technological transformation and innovation, in order to "clean production, innovative filtration method" as the core, to provide enterprises to reduce overall production costs, improve product quality.
Pigments separation membrane concentration process:
The extract was pretreated by removing a portion of the solid impurities (common mode filter has a plate and frame filter / centrifugation), and then through the membrane filter to remove soluble macromolecular impurities, the dye material to achieve a clear solution, and then concentrated into the retentate dye film, so that ash and other small molecule impurities through, to achieve the dual purpose of dewatering and other impurities.
