High molecular weight gallotannins as a stain-inhibiting agent f

Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Specific dye or pigment per se or compositions containing same

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426250, 426262, 426268, A23L 127, A23L 1275

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active

055715516

ABSTRACT:
Selected high molecular weight gallotannins are incorporated into FD&C dye-containing foodstuffs to prevent staining of polymeric substrates such as wool or nylon rugs and clothing. Gallotannins from sumac leaves and Chinese nut galls are effective at levels of 50 ppm or below. This invention is useful in foodstuffs which are not subject to oxidation.

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The Condensed Chemical Dictionary, 10th Ed., G. Hawley, Van Nostrand Reinhold Co., New York, 1981, p. 328.
Haslam, E. "Polyphenol-Protein Interactions" Biochemistry Journal, vol. 139 (1974), pp. 285-288.
Nishizawa, et al. "Tannins and Related Compounds. Part 5." Journal of Chemical Society Perkin Trans. I (1982), pp. 2963-2968.
21 Code of Federal Regulations Section 184.1097, "Tannic Acid" (May, 1985).
R. W. Keown and C. P. Malone, "Tannins as Stain Resists for Food Dyes" (Status Report).

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