CHEM150-761March11

CHEM150-761March11 - Food Additives 23/03/2008 22:37:00...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Food Additives 23/03/2008 22:37:00 Headline: Toxic wax on fruits and veggies Fruits produce their own wax to protect them from dehydration, insects etc. Ex. beeswax, carnauba wax, candelilla wax, shellac After they are picked and wash, the wax is removed But its important to have wax, otherwise the fruit would dry up quickly Either natural or artificial wax may be added Morpholine is added to emulsify the wax (so its easier to apply) In the body morpholine gets converted into nitroso-morpholine which is potentially carcinogenic That is what the headline was referring to But only the dose makes the poison Our intake of these potentially toxic nitrates comes mainly from natural sources, the amount we get from morpholine is trivial Eventually the paper corrected their mistake (but corrected on page 9, not the cover where the original article had been) Apples contain natural carcinogens: Formaldehyde Furfural What is meant by carcinogen? For a substance to be a human carcinogen it has to be a carcinogen in test animals + have to demonstrate that people near these chemicals have a high incidence of cancer Often the word carcinogen refers to tests done on animals only Just because a food is an animal carcinogen, doesnt mean its a human carcinogen A lot of our food also contains anti-carcinogens: ex. flavonoids in apples The good old days were terrible ex. Romans would add lead to their wine to sweeten it Vegetables used to be colored with copper salts Calcium sulfate was added to flour to extend it In one case, calcium sulfate was replaced with arsenic oxide Food contains toxic substances Ex. Cyanide is present in cassava roots, bitter almonds and fruit seeds Ex. Safrole natural ingredient in sassafras leaves o It was used as a flavoring agent in root beer o Later it was found to be carcinogenic to animals o Removed from root beer, but is still naturally present in sassafras leaves used to make tea Sassafras leaves can be used as a starting material for amphetamines federal government has now banned them Wileswood Popcorn food label: Genuine popcorn Pure vegetable oil Natural salt Real artificial color Our bodies are made of chemicals, we need the chemicals in food to sustain us!...
View Full Document

Page1 / 23

CHEM150-761March11 - Food Additives 23/03/2008 22:37:00...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online