35 results about "Cochineal red" patented technology

The invention relates to a method for purifying cochineal red pigment resin. The method comprises the following steps: (1) preparing a cochineal red pigment extracting solution; (2) pretreating the cochineal red pigment extracting solution so as to obtain a cochineal red pigment concentrated solution; (3) adsorbing the cochineal red pigment concentrated solution by macroporous resin so as to obtain the macroporous resin adsorbing cochineal red pigment; (4) eluting the macroporous resin adsorbing the cochineal red pigment, and collecting an eluant; and (5) concentrating and drying the eluant so as to obtain the cochineal red pigment. Compared with the prior art, the method has the advantages that the technology is simple and practicable, the macroporous resin can be repeatedly used and is environmentally-friendly and energy-saving, raw materials are easy to obtain and low in cost, the content of cochineal red acid in the cochineal red pigment resin obtained by the method is higher than 55wt%, and the industrial requirements of ordinary food and the like can be satisfied.

The invention discloses a treatment process of dyeing preserved strawberries with cochineal red pigment. The process comprises the following steps:1, boiling strawberries, that is, boiling strawberries in boiling liquid which is obtained by adding sodium pyrosulfite and sodium chloride in water, wherein, the content of sulfur in the boiling liquid is 200 to 500 ppm, the concentration of sodium chloride is between 5 to 10 g / L; 2, preparing pigment water, that is, adding cochineal red pigment and sodium chloride into water and carrying out stirring for even mixing, wherein, the concentration of cochineal red pigment is 0.3 g / L, and the concentration of sodium chloride is 5 to 10 g / L; 3, dyeing strawberries, that is, dyeing boiled strawberries in the pigment water for 24 hours, wherein, temperature for dyeing at first 12 hours is 65 to 90 DEG C, and temperature for dyeing at second 12 hours is 50 to 75 DEG C; 4, infiltrating sugar, that is, carrying out sugar infiltration on dyed strawberries; 5, finishing a product, that is, carrying out baking and soft tempering on strawberries after sugar infiltration. The process provided in the invention effectively overcomes the defects that cochineal red pigment is difficult to paint, makes painting uneven and has a color not brilliant enough, and enables uniformly colored and brilliant preserved strawberries by using cochineal red pigment to be obtained.

The invention discloses a drawing pigment specially used for opera murals and a preparation method thereof. The drawing pigment is prepared from the following raw materials in parts by weight: 20-25 parts of annatto, 15-18 parts of lac red, and 2-3 parts of talcum powder 3-4 parts of polysorbate, 6-7 parts of polyvinyl alcohol, 2-6 parts of hydroxymethyl cellulose, 7-8 parts of methyl pentanol, 2-4 parts of silica powder, polytetrafluoroethylene 3-5 parts of powder, 50-80 parts of deionized water; the steps of the preparation method of the drawing pigment are: stirring the prepared raw materials to obtain a mixed solution, grinding the mixed solution, and screening the ground mixed solution to obtain a special color for opera murals Drawing pigments; by adding polytetrafluoroethylene powder and silica powder to the raw materials for the preparation of pigments, the wear resistance and high temperature resistance of the mural are improved. By controlling the rotation of the grinding tank and the grinding disc in the opposite direction, the To improve the grinding effect, the grinding mechanism can freely adjust the height of the grinding disc to control the grinding degree.

The invention belongs to the technical field of natural pigments, and relates to a color-protecting agent and method for improving thermal stability of cochineal dye. The color-protecting agent is prepared from the following raw materials, in parts by mass: 0.1-0.4 part of tea polyphenols, 0.02-0.05 part of papaya flavone, and 0.5-1.5 parts of glucomannan; the color-protecting agent is prepared bydispersing the raw materials into a mixed solvent; and the above color-protecting agent is added into the cochineal dye, and uniform mixing is performed to form a mixture of the cochineal dye and thecolor-protecting agent. According to the color-protecting agent and method for improving the thermal stability of the cochineal dye provided by the invention, the thermal stability of the cochineal dye can be effectively improved, and discoloration of the cochineal dye due to heat during processing and storage of the cochineal dye can be avoided; and meanwhile the tea polyphenol and papaya flavone antioxidants are slowly released under the action of the glucomannan, so that the effect effective duration of the color-protecting agent can be effectively prolonged.

The invention relates to a method for purifying high-content cochineal pigment. The method comprises the following steps: (1) preparing a cochineal pigment extracting solution; (2) concentrating and filtering the cochineal pigment extracting solution to obtain a cochineal pigment concentrated solution; (3) adsorbing the cochineal pigment concentrated solution through polyamide resin to obtain resin adsorbed with cochineal pigment; (4) washing the polyamide resin adsorbed with the cochineal pigment with deionized water; (5) eluting the polyamide resin adsorbed with the cochineal pigment by adopting a solvent, and collecting eluent; and (6) concentrating the eluent, and carrying out spray drying to obtain the cochineal pigment. Compared with the prior art, the method has the advantages thatthe process is simple and feasible, the polyamide resin can be used for multiple times, the method is environment-friendly and energy-saving, the raw materials are easy to obtain and low in price, andthe obtained cochineal pigment is low in protein content and does not easily cause anaphylactic reaction.

The invention discloses a method and product for preparing cochineal aluminum-free lake-like pigments by using protein and the application thereof, comprising: adding carminic acid into a buffer solution with a pH of 3 to prepare a pigment solution, and adding metal ions, fully stirred to obtain carminic acid pigment solution; add protein to carminic acid solution, mix well, add polyphenols, stir well, take precipitate after centrifugation, freeze-dry, grind to obtain cochineal red aluminum-free Lake pigments. The method for preparing cochineal aluminum-free lake-like pigments by utilizing protein in the invention is simple and convenient to operate, and the aluminum-free product avoids doubts about its safety. The invention provides a cochineal aluminum-free protein color lake, which has a good coloring effect in alkaline dilute iron solution and alkaline calcium solution, and has a dyeing effect on dough, surimi and cream better.

The invention discloses a hyperchromic and color fixing process of a high-temperature ham and proposes the using toner and color fixative recipe. The color fixative is comosed of carnosine, TP, citric acid, phytic acid, rosemary, L-cysteine; the toner is composed of Monascus red, cochineal red, and annatto. The disclosed hyperchromic and color fixing process of ham includes: still salting for 36 hours in a cold storage with temperature of 0-4 DEG C, and then adding the toner and color fixative for emulsifying, clystering in a stuffer with the vacuum degree of 100Pa. The used sterilizing cooking temperature and time is constant temperature at 90 DEG C for 10 minutes, constant temperature at 110 DEG C temperature 7 minutes, constant temperature at 121 DEG C for 4 minutes, and then quickly cooling to 30 DEG C within 30 minutes. The technology has obvious effect, convenient use, good thermal stability, a wide range of applications and the like features.