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ProFood International Fumaric acid is unsaturated dicarboxylic acid that melts at 287.CAS Number: 110-17-8 Chemical Formula: C4H4O4 Molecular Weight 116.07 Fumaric acid is an organic (carbon-containing) food acid. It is one of the most common acids found in nature where it acts as a key ingredient in organic acid biosynthesis (the Krebs cycle). It is found in small amounts in a variety of plants and is essential to the respiration of animal and vegetable tissue. This chemical is used as a substitute for tartaric acid in beverages and baking powder.It is used as a mordant in dyeing and in the manufacture of synthetic resins and polyhydric alcohols.

Sweet Potato Red (SPR) is a mixture product of anthocyanins which is extracted from purple sweet potato. Anthocyanins are referring a sort of biologically active substance in plants, not only having antioxidation function, but also giving stable bright purple red color naturally. Anthocyanins changes color shade from red to purple when the environment pH changes from acidic to neutral, and finally goes to blue in alkaline. Purple sweet red has a good stability to light and heat. It comes in two forms: liquid and powder, with color value 30 (liquid), color value 40-80 (powder).