Described are methods including cell wall-associated melanin extraction and extracting melanin from microbes producing extracellular vesicles comprising melanin. Further described are composition comprising melanin, melanin coated articles and methods of coating an article. Uses of melanin in methods of heat generation and microwave radiation protection are also described.

An object of the present invention is to provide a gardenia blue pigment that exhibits a vivid blue tone that is bright and has reduced redness, and a method for producing the gardenia blue pigment. A gardenia blue pigment that exhibits a vivid blue tone that is bright and has reduced redness is obtained by carrying out the following first and second steps: the first step of reacting at least one peptide selected from the group consisting of soy peptide, sesame peptide, and rice peptide with genipin in a solvent without the supply of a gas containing oxygen; and the second step of treating the reaction solution obtained in the first step with the supply of a gas containing oxygen.

The present invention relates to a stabilized phycocyanin composition comprising a complexing agent and an encapsulating agent as stabilizer. The present invention further relates to a method for preparing the composition and the use of the composition for coloring particularly food products.

The present invention relates to a stabilized phycocyanin composition comprising a complexing agent and an encapsulating agent as stabilizer. The present invention further relates to a method for preparing the composition and the use of the composition for coloring particularly food products.

Methods of isolating phenols from phenol-containing media. The methods include combining a phospholipid-containing composition with the phenol-containing medium to generate a combined medium, incubating the combined medium to precipitate phenols in the combined medium and thereby form a phenol precipitate phase and a phenol-depleted phase, and separating the phenol precipitate phase and the phenol-depleted phase. The methods can further include extracting phenols from the separated phenol precipitate phase. The extracting can include mixing the separated phenol precipitate phase with an extraction solvent to solubilize in the extraction solvent at least a portion of the phenols originally present in the phenol precipitate phase.

Some embodiments of the invention relate to an article of manufacturing for printing on a foamed beverage comprising: an ink-jet cartridge; and a sugar-poor and unfermented-wort-based ink formulation disposed within the ink jet cartridge. The unfermented wort is the primary colorant of the ink formulation. In embodiments of the invention, (i) a ratio between the EBC number of the ink formulation and the 25° C. viscosity thereof is at least 400 (centipoise).sup.−1; (ii) the ink formulation is characterized by at least a EBC number of at least 1800 colorant units; (iii) the ink formulation comprises at least 10% wt/wt carbohydrates; (iv) the ink formulation is sugar-poor such that a ratio between a wt/wt% concentration of soluble sugars and a wt/wt concentration of carbohydrates in the ink formulation is at most 0.2 (e.g. ≤0.1 or ≤0.05); and (v) at least 60% of particles of the ink formulation are sub-400 nanometer particles.

Some embodiments of the invention relate to an article of manufacturing for printing on a foamed beverage comprising: an ink-jet cartridge; and a sugar-poor and unfermented-wort-based ink formulation disposed within the ink jet cartridge. The unfermented wort is the primary colorant of the ink formulation. In embodiments of the invention, (i) a ratio between the EBC number of the ink formulation and the 25° C. viscosity thereof is at least 400 (centipoise).sup.−1; (ii) the ink formulation is characterized by at least a EBC number of at least 1800 colorant units; (iii) the ink formulation comprises at least 10% wt/wt carbohydrates; (iv) the ink formulation is sugar-poor such that a ratio between a wt/wt% concentration of soluble sugars and a wt/wt concentration of carbohydrates in the ink formulation is at most 0.2 (e.g. ≤0.1 or ≤0.05); and (v) at least 60% of particles of the ink formulation are sub-400 nanometer particles.

A method of preparing paprika red pigment with low polycyclic aromatic hydrocarbons includes (1) drying, crushing and granulating mature peppers to obtain pepper particles; (2) extracting the pepper particles with a vegetable oil in a rotocel extractor to obtain a paprika red pigment solution; (3) extracting the paprika red pigment solution with an ethanol solution in a liquid-liquid extractor to remove spicy substances; (4) running the paprika red pigment solution through a low-pressure chromatography column to remove polycyclic aromatic hydrocarbons; and (5) concentrating the paprika red pigment solution to obtain the paprika red pigment with low polycyclic aromatic hydrocarbons.

A method of preparing paprika red pigment with low polycyclic aromatic hydrocarbons includes (1) drying, crushing and granulating mature peppers to obtain pepper particles; (2) extracting the pepper particles with a vegetable oil in a rotocel extractor to obtain a paprika red pigment solution; (3) extracting the paprika red pigment solution with an ethanol solution in a liquid-liquid extractor to remove spicy substances; (4) running the paprika red pigment solution through a low-pressure chromatography column to remove polycyclic aromatic hydrocarbons; and (5) concentrating the paprika red pigment solution to obtain the paprika red pigment with low polycyclic aromatic hydrocarbons.

The present disclosure relates to a process for preparing a Lawsonia inermis extract which is rich in Lawsone. It also relates to the extract which may be obtained by said process and to a composition comprising thereof. The disclosure also relates to a method for dying fibers, in particular keratin fibers.