7 results about "Indigo dye" patented technology

This invention belongs to the fields of biotechnology, food additives, and dye manufacturing technology. Specifically, it provides a recombinant bacterium for optimizing the production of indigo pigment via the shikimic acid pathway. The recombinant bacterium is characterized by being BL21(TrpR) recombinant strain. ‑ FMO + Amp + TyrR ‑ ) and recombinant bacteria BL21 (TrpR ‑ FMO + Amp + TyrR ‑ aroEaroLaroB + Using *E. coli* BL21(DE3) as the chassis cell, donor DNA was inserted into the TrpR gene via homologous recombination through a combination of a pair of gRNAs and λRED, resulting in the recombinant strain BL21(TrpR). ‑ FMO + Amp + ); BL21(TrpR ‑ FMO + Amp + Through the combined action of a pair of gRNAs and λRED, donor DNA was inserted into the TyrR gene via homologous recombination, resulting in the recombinant strain BL21(TrpR). ‑ FMO + Amp + TyrR ‑ ) and BL21(TrpR ‑ FMO + Amp + TyrR ‑ aroEaroLaroB + The modified recombinant strain produces natural indigo dye, providing strains for the industrial production of indigo biosynthesis.

A biosynthetic method and composition for producing indigo dyes comprising indigotin and isatin. A tryptophanase (TRP) and a flavin monooxygenase (FMO) can be produced through a transgenic organism having carrier encoded tryptophanase and flavin monooxygenase. The produced tryptophanase and flavin monooxygenase convert L-tryptophan into indigo dyes in the presence of one or more bioactive additives selected from cysteine, 2-hydroxyindole, or 2-indoxyl, and the weight ratio of indigotin to isatin in the dyes is between 1:0.1 to 1:4. The dyes have a hue of X: 0.1920 to 0.2481, Y: 0.2537 to 0.2019, Z: 0.5543 to 0.5501 in the CIE XYZ color space definition. Selectable and repeatable dyeing hues are provided.

The utility model relates to the technical field of indigo dye extraction, and specifically relates to an automatic feeding and quantifying device for indigo dye extraction, which comprises a support frame, a conveying frame is arranged on the support frame, a rotating shaft is arranged in the conveying frame, a driving source is arranged on the rotating shaft, a conveying belt is sleeved on the rotating shaft, the conveying belt is arranged in the conveying frame, one end of the conveying frame is arranged in an inclined manner, a storage cylinder is arranged on one side of the support frame, a discharge port is formed in one side of the storage cylinder, and the extract of indigo dye is placed in the storage cylinder; protective frames are arranged on the two sides of the conveying frame, and the protective frames are arranged in an inclined manner. Compared with the prior art, the safety and cleanliness of the conveying process are improved, the overall structure is simple, maintenance is facilitated, and the automatic improvement in the indigo dye extraction process is applicable.

1. Name of the product in this design: Embroidered Bag (Indigo Dyed). 2. Purpose of this design: For storing items. 3. The key design elements of this product are the combination of shape, pattern, and color. 4. The image or photograph that best illustrates the design's key features: the front view. 5. The design for which protection is sought includes color.

A method for obtaining indigo-dyed yarn with controlled ring dyeing is provided. A system and apparatus for indigo dyeing yarn are also provided, which produce dyed yarn with uniform color intensity.

The application provides an electrochemical vat dyeing device and method. The electrochemical vat dyeing device is provided with a cathode chamber and an anode chamber, a cathode plate is arranged in the cathode chamber, and an anode plate is arranged in the anode chamber; a PES film coated with nano-particles is used as a diaphragm between the cathode chamber and the anode chamber; wherein the nano-particles include Ti4O7 nano-particles, CeO 2‑x at least one of ZrO2 nano-particles and CeO2 nano-particles, 2>x>0, and 2>y>0. 2‑y The electrochemical vat dyeing device provided by the application uses a PES film coated with ZrO2 nano-particles as a diaphragm, replaces a traditional Nafion film, and can be well applied to an electrochemical vat indigo process and is a good electrochemical vat indigo dyeing device. The electrochemical vat dyeing device provided by the application is used in an electrochemical vat indigo process, and realizes high current efficiency for electrochemical vat indigo under the premise of high-efficiency isolation of leucoindigo at low cost.

Methods for dyeing keratinous fibers, in particular human hair, using an indigo-producing plant powder and a post-treatment agent are described.