06/06/2016
Chemicals, additives, chemicals, additives, more chemicals, MORE additives. When is this craziness going to be seriously regulated? Adverse reactions to certain foods are sometimes attributable to additives or preservatives IN the food and NOT to the food itself. These same additives and preservatives are also found in the cosmetics and pharmaceutical arena as well. Poking around some various nutraceutical supplements laying around, I decided to talk about a substance which seems to pop up everywhere. It is in food for consumption, pet foods or treats and cosmetics to name a few. What I want to focus on are the things called dyes. How many times does the substance FDC yellow 5, Red 40 vs FDC Red 40 Lake pop up? What are these things? Why are they used, are they safe and do we really need them?
For simplicity sake, they are colorants; they add the color to certain drinks, pill coatings or foods (if applicable). To begin to understand the differences, one must draw a distinction between a Lake and a dye. They are different with specific uses.
Dyes: They are usually water soluble. This means that they easily dissolve in water. Dyes can be used anywhere to color most any kind of product. Ingesting too much dye can oftentimes color stools or even urine! How many times have our pets had stools that might have been "blood looking" but in all reality, it might not have been blood at all! The fact is, it could be the DYE in the particular pet food causing the issue. The key phrase here is *could*.
Lakes: Lakes are dyes that are complexed with metallic salts. In other words, the dye is chemically attached to a metallic salt whether it be an aluminum derivative, calcium derivative or otherwise. Why would we want dyes to be combined with these salts? Simple. This is done to make the overall dye Insoluble. Why would we want this? Imagine a coating on a pill or a capsule. If the dye itself was soluble, as soon as the capsule, pill, tablet or whatever got wet, the dye would start to dissociate or run off. What a mess that would be! To avoid that, manufacturers use complexed dyes. Complexed dyes would make the color more "resistant" if you will.
Restating, unlike dyes that are water SOLUBLE, Lakes are insoluble. They achieve their tinting properties by dispersion. This property allows them to be used to tint oil based products effectively where such products have minimal moisture to dissolve soluble dyes.
So with all this banter aside, are they safe? Dyes in general (mostly ORGANIC and NATURAL), are safe.
Artificial dyes:
tartrazine (see below)
sunset yellow
Allura
Patent Blue V:
Short and long term issues such as hyperactivity, migraines, asthma ect.
Lakes could cause allergic reactions in people. In particular, Yellow #5 Lake, also known as Tartrazine, has generated some controversy. FDA regulations require that some sort of notice be posted that formulations have Yellow #5 in it.
With all this being said, what is the point? Why do we need these dyes to begin with? To make products pretty and stand out? Do we like having adverse reactions to chemically modified dyes?? Agreed, who wants to eat food or drink a beverage if it looks bland or boring or mundane? Aside from a purely chromatographic (!) perspective, I cannot see any appreciable use in foodstuffs. Critics here? I will stand corrected if someone challenges me.
IF coloration is needed, we can turn to NATURAL (!!) ingredients. Some examples include:
Beet juice powder
Tumeric powder
Paprika
Beta carotene
Saffron
Chlorophyll
By all means, this is NOT a complete list. The purpose of this blog was to point out that several synthetic dyes are included in the foodstuffs we eat. Next time be cognizant when you grab your favorite soda or snack or even a Huge 50lb bag of chow for FIDO. You will be amazed at what is in the ingredient list!
As always, be safe. Be smart: do it the NATURAL way!