4 results about "Cochineal red" patented technology

The invention relates to the technical field of compound coloring agents, in particular to a compound coloring agent heat-resistant cochineal lake microcapsule as well as a preparation method and application thereof. The heat-resistant cochineal lake microcapsule provided by the invention is realized by the following four steps: construction of an inner layer lipid phase, pre-coating of cochineal lake-lipid, assembly of an outer layer water phase and heat-ion double-crosslinking curing. The heat-resistant cochineal lake microcapsule is prepared from the following components in percentage by mass: 1 to 10 percent of cochineal lake, 5 to 30 percent of lipid, 50 to 90 percent of water phase and 1 to 20 percent of cross-linking agent. According to the method, the problem of color bleeding (color bleeding caused by a food matrix environment and high-temperature sterilization) when cochineal lake particles are applied to food can be avoided. The heat-resistant cochineal lake microcapsule is obviously superior to the prior art in the aspects of bleeding blocking efficiency (bleeding rate at 121 DEG C is less than 2), processing applicability (blending and shearing resistance) and the like, and has high industrial value.

The application discloses a freshness indicating film based on cochineal carmine and a preparation method thereof, and raw materials include cochineal carmine, a pH value regulator and a polymer base film. The application composites the cochineal carmine and a biological base material with good loading performance to obtain a food freshness indicating film, utilizes the characteristics that the cochineal carmine has strong light and heat stability and can have more stable structure under a complex light and heat environment, further improves the stability of the freshness indicating film, and further improves the accuracy of color freshness monitoring and indicating effect of the freshness indicating film, and solves the problem of poor light and heat stability of the freshness indicating film of a natural dye food indicator using anthocyanin, curcumin and shikonin.

The present application relates to the technical field of pearl pigment, and particularly relates to an inorganic pearl pigment with imitation cochineal red phase and a preparation method thereof. The inorganic pearl pigment with imitation cochineal red phase comprises a lamellar base material, the lamellar base material is sequentially coated with coating layers with different refractive indexes, and the coating layers comprise a first layer of high-refractive-index metal oxide, a low-refractive-index crosslinking layer, a promoting layer and a second layer of high-refractive-index metal oxide arranged in sequence. The purpose is to make the pearl pigment composition free of any organic colorant, and the prepared pearl pigment with imitation cochineal red phase has high brightness and color saturation, the stacking color phase is comparable to cochineal red lake, and the pearl pigment with imitation cochineal red phase also has good dispersibility, solvent resistance and weather resistance.

The utility model relates to the technical field of cochineal red pigment extraction, specifically a kind of extraction device of cochineal red pigment, including temperature-controllable jar body, the jar body top is provided with inlet pipe, the jar body bottom one side is provided with feed pipe, the jar body one side is provided with drain pipe, the jar body bottom is connected with unloading assembly, the jar body is provided with the lift pressure filter assembly that can be adjusted up and down, the jar body is provided with stirring mechanism, the jar body top is equipped with the circulation assembly for pumping the extraction liquid in the jar body top, the outlet end of the circulation assembly is connected with annular liquid guide component extending to the lift pressure filter assembly upper side, the utility model can realize the purpose of shortening extraction period, improving extraction rate, increase initial solid-liquid separation function simultaneously, reduce subsequent separation workload.