w w nawar lipids
Download
Skip this Video
Download Presentation
W W Nawar: Lipids

Loading in 2 Seconds...

play fullscreen
1 / 9

W W Nawar: Lipids - PowerPoint PPT Presentation


  • 144 Views
  • Uploaded on

W W Nawar: Lipids.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' W W Nawar: Lipids' - nina-lawrence


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
w w nawar lipids
W W Nawar: Lipids
  • “Lipids consist of a board group of compounds that are generally soluble in organic solvents but only sparingly soluble in water….” “…Glycerol esters of fatty acids, which make up 99% of the lipids of plant and animal origin have traditionally been called fats and oils. This distinction, based solely on whether the material is solid or liquid at room temperature, is of little practical importance and the two terms are often used interchangeably.”

From: Fennema (1996)

fatty acids
Fatty Acids
  • Straight chain
  • Even numbers
  • Mainly c12-c20
  • Double bonds usually cis (note – hydrogenation)
  • Polyunsaturated, methylene interrupted, Rarely other functional groups
examples
Examples
  • Butanoic acid (butyric acid)
  • Octadecanoic acid (Stearic acid)
  • 9-Octadecenoic acid (Oleic acid)
glycerol esters
Glycerol esters
  • Glycerol (viscous, polar polyol)
  • Monoglyceride and Diglyceride (surface active)
  • Triglyceride (non polar oil)

Most food oils are a very diverse group of triglycerides

lipid classification
Lipid Classification
  • Milk fats. Relatively high proportion of short chain fatty acids
  • Vegetable butters. Unsaturated, narrow melting range
  • Oleic-Linoleic. Most vegetable oils,
  • Linolenic. Soybean oil
  • Animal fats. Long chain fatty acids
  • Marine oils. Long chain PUFAs (up to 6 unsaturations)
ad