Dyeing agent, dyeing solution and method for dyeing cherry

Details Dyeing agent, dyeing solution and method for dyeing cherry Dyeing agent, dyeing solution and method for dyeing cherry

A - Human Necessities

23

L

A23L 1/275 (2006.01)

Patent

CA 2045435

A dyeing agent for dyeing cherries comprises (a-1) a lac dye; (b) alum; (c) L-ascorbic acid and/or a salt thereof; and (d) at least one member selected from the group consisting of phosphoric acid, tartaric acid, citric acid and malic acid and/or a salt thereof in an amount of 0.8 ~ 6.0 parts by weight of component (b), 1.0 ~ 10.0 parts by weight of component (c) and 3 ~ 23.3 parts by weight of component (d) relative to 1 part by weight of component (a-1), or (a-2) a cochineal dye and a lac dye; (b), (c) and (d) in an amount of 0.8 ~ 3.6 parts by weight of component (b), 1.0 ~ 6.0 parts by weight of component (c) and 3~ 14 parts by weight-of component (d) relative to 1 part by weight of component (a-2). A method for dyeing cherries comprises the steps of charging cherries to be dyed in a container together with a dyeing solution containing the dyeing agent, degassing the contents of the container, then sealing the container and heating the sealed container. Thereby, it is possible to uniformly dye cherries approximately natural red color. Thus, cherries can be dyed in high efficiency through simple processes, i.e., without using a multistage immersion treatment. Moreover, there can be obtained cherries whose texture is not softened, which are hard and tight and which exhibit favorable taste peculiar to cherries.

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