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

056395000

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.

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STN Reference to European Patent 131176.
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The Journal of The Chemical Society, Apr. 1961, E. Haslam et al., pp. 1829-1842.
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 Regulation .sctn. 184.1097, "Tannic Acid" (May, 1985).

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