Natural blue anthocyanin-containing colorants

Patent metadata

Field	Value
Publication number	US-2016015067-A1
Application number	US-201414773111-A
Country	US
Kind code	A1
Filing date	Mar 14, 2014
Priority date	Mar 15, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

The present invention is directed to natural blue anthocyanin-containing colorants comprising fractions of anthocyanin molecules separated from anthocyanin-containing vegetable and fruit juices and extracts. Anthocyanin fractions are separated at a select pH based on differences in polarity of the anthocyanin molecules in the anthocyanin-containing vegetable and fruit juices and extracts. The invention is directed to the anthocyanin fractions providing color characteristics similar to those provided by the synthetic blue colorant, FD&C Blue No. 1. The present invention is also directed to natural green colorants comprising the natural blue anthocyanin-containing colorant and a natural yellow colorant. The present invention is further directed to edible products comprising the natural blue anthocyanin-containing colorants.

First claim

1 . A natural blue anthocyanin-containing colorant sourced from vegetable, fruit or combinations thereof, comprising a selectively separated mixture of anthocyanins, wherein the colorant when in an aqueous solution at pH 8.0 has a maximum absorbance of 615 nm to 635 nm.

2 . The natural blue anthocyanin-containing colorant according to claim 1 , wherein the colorant when in an aqueous solution at pH 8.0 at a concentration in a range of 1 ppm to 1000 ppm has an h° value of 209 to 290.

3 . The natural blue anthocyanin-containing colorant according to claim 1 , wherein at least one concentration of the colorant when in an aqueous solution at pH 8.0 provides color characteristics having a ΔE value of 12 or less compared to the color characteristics defined by the segmented line defined by the L*a*b* values of 5 ppm and 10 ppm FD&C Blue No. 1 in aqueous solution.

4 . The natural blue anthocyanin-containing colorant according to claim 3 , wherein the h° value of the at least one concentration of colorant in aqueous solution is in a range from 209 to 250.

5 . The natural blue anthocyanin-containing colorant of claim 1 , wherein the source of the anthocyanins is selected from the group consisting of red cabbage, purple sweet potato, blue potato, black carrot, purple carrot and combinations thereof.

6 . The natural blue anthocyanin-containing colorant of claim 1 , wherein the source of the anthocyanins is red cabbage.

7 . A natural blue anthocyanin-containing colorant sourced from vegetable, fruit or combinations thereof, comprising a selectively separated mixture of anthocyanins, wherein at least one concentration of the colorant when in an aqueous solution at pH 8.0 provides color characteristics matching a FD&C Blue No. 1 segmented line based on a series of aqueous solutions having differing concentrations of FD&C Blue No. 1 defined in an L*a*b* color space, wherein matching means the at least one concentration of the colorant in an aqueous solution at pH of 8.0 has a ΔE value measured against the FD&C Blue No. 1 segmented line that is at least one unit less than a ΔE value for a Spirulina Blue segmented line defined in the same L*a*b* color space based on a series of aqueous solutions having differing concentrations of Spirulina Blue measured against the FD&C Blue No. 1 segmented line.

8 . A natural green colorant consisting essentially of a natural yellow colorant and the natural blue anthocyanin-containing colorant of claim 1 .

9 . An edible product comprising the natural blue anthocyanin-containing colorant of claim 1 .

10 . The edible product of claim 9 , further comprising a natural yellow colorant.

11 . The edible product of claim 9 , wherein the product is a confectionery product.

12 . The confectionery product of claim 11 , further comprising a natural yellow colorant.

13 . The confectionery product of claim 11 , wherein the colorant is included in a coating applied to a surface of the confectionery product.

14 . The confectionery product of claim 13 , wherein the confectionery product is a confectionery center with a soft panned or hard panned sugar-based coating.

15 . The confectionery product of claim 13 , wherein the confectionery product is a confectionery center with a soft panned or hard panned sugarless coating.

Assignees

• Mars Inc
• Univ Ohio State

Inventors

• Robbins Rebecca J
• Johnson J Christopher
• Collins Thomas M
• Ahmadiani Neda
• Giusti M Monica

Classifications

• C09B61/00 Primary

  Dyes of natural origin prepared from natural sources {, e.g. vegetable sources} · CPC title

• A23G3/343

  Products for covering, coating, finishing, decorating · CPC title

• A23L5/42

  Addition of dyes or pigments, e.g. in combination with optical brighteners · CPC title

• C07H17/065

  Benzo[b]pyrans · CPC title

• A23G3/54 Primary

  Composite products, e.g. layered, coated, filled · CPC title