Colorants
Pages 89-95
DOI: https://doi.org/10.1094/1891127004.011
ISBN: 1-891127-00-4
Abstract
Topics Covered
- Inorganic Colorants
- Titanium Dioxide
- Carbon Black
- Ultramarine Blue
- Iron Oxides
- Talc
- Zinc Oxide
- Calcium Carbonate
- Silver
- Silicon Dioxide
- Others
- Organic Colorants
- Fruit and Vegetable Extracts
- Riboflavin
- Corn Endosperm Oil
- Algae Products
- Cottonseed Products
- Shellac
- Octopus Ink and Squid Ink
Introduction to Chapter
Several of the colorants described in this section, such as titanium dioxide and carbon black, are obviously colorants, but others may be used primarily for other purposes. For instance, zinc oxide and calcium carbonate may be added to foods as nutritional supplements and calcium carbonate as a pH adjuster; thus, their contribution to color is minimal. Still others, such as talc, are indirect additives used in processing or packaging. They do contribute incidentally to appearance, but it is not their primary function. There is a long list of compounds in this category (listed in 21 CFR 178.3297), as described in Chapter 4.
