07-Proteins

07-Proteins - New York City passes trans fat ban NYC to...

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

View Full Document Right Arrow Icon
1 New York City passes trans fat ban NYC to restaurants: No trans fat NEW YORK - The Board of Health voted Tuesday to make New York the nation’s first city to ban artery-clogging artificial trans fats at restaurants — from the corner pizzeria to high-end bakeries. Restaurants had to eliminate artificial trans fats from all of their foods by July 2008. Soy Bean Oil and Hydrogenation Soy bean oil contains a lot of poly- unsaturated fatty acids (which makes it an oil) To make a fat out of soy bean oil, the number of double bonds must be reduced. That is: these unsaturated fatty acids should be saturated with hydrogen! Hydrogenation C C H H + H 2 C C H H H H Unsaturated Saturated Hydrogen Gas But we do need to know a little more about Double Bonds Double Bonds • A double bond can exist in two ways, commonly referred to as CIS & TRANS double bonds
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 trans Fatty Acids are By-products of Hydrogenation C C H H Unsaturated & cis-fatty acid C C H H Unsaturated & trans-fatty acid By-product of Hydrogenation Even more about. .. Double Bonds Double Bonds Cis double bonds are formed in nature Trans double bonds are formed by synthetic chemistry processes called: Hydrogenation Trans fatty acids formed from “Hydrogenation” are Artificial “Synthetic” or “Un-Natural” Proteins, Amino Acids & Us Water accounts for 60-70% of our body weight, followed by amino acids (proteins) with 20%. Thus, a person weighing 50 kg consists of about 10 kg of proteins, which make up important tissues of the body such as muscles, gastrointestinal tract, internal organs, hemoglobin in the blood, and the collagen of our hair and skin. The constituents of these proteins are amino acids.
Background image of page 2
3 Outline of lecture topics. .. Essential amino acids Limiting amino acids Improving protein quality Basic protein structure Protein function(s) & enzymes Protein quality What are the Protein Building Blocks -Amino Acids — So, amino acid’s are composed of: An acid part An amino part And another part “ R There are 20 common “R” parts that are different and make the differences among the amino acids Occasionally, you find extra “oddball” amino acids C— COOH I H I R H 2 N Many theories have been presented to explain the origin of life: In many cases, however, amino acids are said to be the source of life. Some meteorites which collided with the earth after a long journey from the remotest corner of the universe contain amino acids. Trace amounts of glycine, alanine, and glutamate, and were detected in a meteorite that struck Murchison (Australia) in 1969. The amino acids in meteorites are considered a trace of life elsewhere in the universe. A trilobite fossil dating back to 500 million years ago was found to contain amino acids such as alanine.
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/26/2011 for the course FST 010 taught by Professor Garcia during the Spring '08 term at UC Davis.

Page1 / 19

07-Proteins - New York City passes trans fat ban NYC to...

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