8 results about "Brown pigment" patented technology

The invention discloses a directional preparation method of a high-stability dark brown pigment and an application of the high-stability dark brown pigment in an acid beverage, and relates to the technical field of food additives. The preparation method comprises the following steps: S1, crushing raw dark green tea raw materials, mixing the crushed raw dark green tea raw materials with water, adjusting the pH value to 9-12, carrying out heating extraction, and collecting a supernatant; s2, repeatedly concentrating the supernate to obtain a concentrated solution; s3, adding an ethanol solution into the concentrated solution, standing, and collecting a precipitate; and S4, volatilizing the ethanol in the precipitate, re-dissolving, taking the supernatant, and drying to obtain the product. By optimizing the extraction and purification process, the dark brown pigment with high extraction rate and high color value is successfully prepared, the dark brown pigment shows excellent stability in a wide pH range and under the conditions of high temperature and high pressure, and the pigment obtained by the invention can be used as a natural brown coloring agent with excellent performance, is widely applied to the field of acid beverages, and has wide application prospects. Meanwhile, an effective way is provided for high-value utilization of dark tea resources.

The invention relates to a method for producing heat-resistant pseudobrookite powder, reducing the amount of waste in the process of producing pseudobrookite from ilmenite, and to pseudobrookite powder obtained by this method.

The invention discloses an environment-friendly cotton flannelette dyeing method adopting a momordica grosvenori extracting solution as a pure natural dyeing agent, and relates to a textile material technology, the preparation method comprises the following steps: a, dye extraction: crushing mature momordica grosvenori, adding the crushed momordica grosvenori into ultrapure water according to a ratio of the momordica grosvenori to the ultrapure water of 1: (20-30), and carrying out dye extraction; and then putting the mixture into a water bath kettle for heating at the heating temperature of 90-100 DEG C for 0.5-1 hour. B, filtering: filtering out impurities from the dye stock solution obtained in the step a through a filtering technology to obtain a dye extracting solution after the impurities are filtered out; c, fabric dyeing: properly cutting cotton flannelette, putting the cotton flannelette into the dye extracting solution in the step b, and heating the cotton flannelette in a water bath kettle at the dyeing temperature of 90-100 DEG C and the bath ratio of 1: (60-70) for 0.5-1 hour. Then taking out the cotton flannelette, adding 5g / L of NaOH and 5g / L of NaCl into the extracting solution, uniformly stirring, putting the cotton flannelette into the extracting solution, and continuously dyeing for 0.5-1 hour. During the whole heating period, continuous stirring is performed, and the dyed cotton flannelette is taken out and naturally aired. The siraitia grosvenorii yellowish-brown pigment is extracted at high temperature, the dyed cotton fabric is bright in color, meanwhile, the whole experimental process is easy and convenient to operate, and the technological process is green, environmentally friendly, non-toxic and pollution-free.

The invention relates to a method for producing heat-resistant pseudobrookite powder, reducing the amount of waste in the process of producing pseudobrookite from ilmenite, and to pseudobrookite powder obtained by this method.

The utility model discloses a production system for preparing a functional beverage by utilizing bamboo shoot shells, which relates to the technical field of beverage production and comprises a crushing component, an extracting and filtering component, a fermenting and filtering component and a blending and filtering component, the crushing assembly comprises a crushing part and a feeding part; the extracting and filtering assembly comprises an extracting part, a first filtering part, a first stirring part and a first pushing part; the fermentation filtering assembly comprises a fermentation part, a second filtering part, a second stirring part and a second pushing part; the blending and filtering assembly comprises a first concentrator, a second concentrator, a blending part, a third filtering part, a third stirring part, an aging tank and a sterilizer; crushing the powder bamboo shoot shells, extracting, filtering an extracting solution, and concentrating to obtain the brown pigment; the extracted bamboo shoot residues are fermented through a fermentation piece, fermentation liquor is filtered, fulvic acid is obtained through a concentration instrument, and therefore brown pigment is separated from the bamboo shoot shells for making the beverage, fulvic acid serves as an auxiliary material, and the utilization mode of the bamboo shoot shells is widened.

This invention relates to a brown pigment-producing *Achromobacterium pulmonaryum* strain PHS-001 and its applications. The *Achromobacterium pulmonaryum* strain PHS-001 is deposited at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 37838. The *Achromobacterium pulmonaryum* strain PHS-001 obtained by this invention can produce brown pigment, and the fermentation cost is low, the brown pigment extraction process is simple, and it can be used not only for dyeing protein fibers such as silk and wool, but also for dyeing synthetic fiber materials such as nylon. Furthermore, it can achieve good coloring results on fabrics containing cationic groups.

This invention relates to the field of plant tissue culture technology, specifically a method for culturing *Limonium bicolor* tissue, comprising five steps: explant preparation and sterilization, callus induction culture, adventitious shoot proliferation culture, rooting culture, and hardening-off transplanting. Modified polyvinylpyrrolidone (PVP) and modified chitosan form a composite material through borate ester bonds, which accumulates around the explant. MES maintains pH stability, allowing PPVP to continuously diffuse into the wound. Modified chitosan blocks oxygen from direct contact with the wound surface, protecting endogenous phenols; its catechol groups chelate the PPO cofactor Cu. 2+ Activated carbon adsorbs free phenolic substrates in the culture medium, reducing quinone formation at its source. Modified polyvinylpyrrolidone inhibits PPO catalytic activity; grafted ascorbic acid can reduce already formed o-quinones back to catechol, directly removing brown pigment precursors.

The utility model discloses a kind of production system of brown pigment extraction and preparation insoluble dietary fiber, it is related to bamboo shoot shell processing technical field, including bamboo shoot shell processing system, bamboo shoot residue processing system;Bamboo shoot shell processing system includes washing and draining assembly, drying assembly, crushing assembly, extraction assembly, first conveying piece, cleaning spray head, draining spray head;Second conveying piece and heating part are equipped in drying assembly inside;Extraction assembly is externally connected with first neutralizing part, concentration instrument;Bamboo shoot residue processing system includes with second neutralizing part, first stirring part, filter pressing part;Different angle washing is carried out to bamboo shoot shell by high-pressure water flow and using high-pressure airflow to blow water droplet on bamboo shoot shell away, and the bamboo shoot shell is washed and drained quickly, drying assembly carries out drying to bamboo shoot shell, after crushing, bamboo shoot shell is extracted, concentrated to obtain brown pigment, after extraction, bamboo shoot shell filter residue is treated by neutralization stirring, after filter pressing, the filter residue is washed and dried again, crushing is used for preparing insoluble dietary fiber, improve the utilization of bamboo shoot shell.