Guanylic acid

International Numbering System (INS) for Food Additives: 626

Food additives Europe numbers: E626 

Guanylic acid itself isn't technically a food excipient, but it's closely related to one. Here's the breakdown:

• Food Excipients: These are inactive ingredients added to food for various functions like thickening, bulking, or preserving. They don't provide significant nutritional value.
• Guanylic Acid: This is a naturally occurring nucleotide (a building block of RNA) found in some foods like meat, fish, and mushrooms. It doesn't directly function as a texturizer or stabilizer in the way typical excipients do.

However, guanylic acid plays a role in enhancing flavor:

• Umami Enhancer: Guanylic acid contributes to the savory taste sensation known as umami. By itself, it doesn't have a strong taste, but it synergistically amplifies the umami impact of other ingredients, particularly inosinate (another nucleotide). This umami boost is why guanylic acid is often used alongside its partner, inosinate, in the form of a flavor enhancer called disodium guanylate inosinat (disodium guanylate 5'-inosinate, or DGMI).
• Disodium Guanylate Inosinate (DGMI): This is the actual food excipient derived from guanylic acid. It's commonly used in savory processed foods like soups, broths, snacks, and meat products to enhance their umami taste profile.

Here's a quick summary:

• Guanylic acid is a natural flavor contributor.
• Disodium guanylate inosinate (DGMI), derived from guanylic acid, is the true food excipient that enhances umami taste.