What is the chemical structure of olestra?
The structure of olestra is analogous to that of the triglycerides, but olestra differs from triglycerides in that it consists of a core of sucrose, rather than of glycerol, esterified with six to eight, rather than three, fatty acid chains. 1 The fatty acids used to make olestra can be derived from any vegetable oil.
Is olestra made with sucrose?
Olestra uses sucrose as the backbone in place of glycerol, and it can form esters with up to eight fatty acids. Olestra is a mixture of hexa-, hepta-, and octa-esters of sucrose with various long chain fatty acids.
Is olestra a real molecule?
Olestra is started from soybean or cottonseed oil and the olestra molecule itself is much larger than a regular fat molecule. The size of the molecule makes it impossible for the body to break it down — similar to the way the body reacts to eating other high fiber foods like apples, corn and bran.
Is olestra is a triacylglycerol?
Olestra is a mixture of compounds comprising sucrose esterified with 6-8 long-chain fatty acids. It is not hydrolyzed by pancreatic lipase and as a result is not absorbed from the small intestine. Olestra in general has physical properties similar to those of a triacylglycerol with the same fatty acid composition.
How is olestra synthesized?
Olestra, also known as sucrose polyester, is a heterogeneous synthetic fat substitute consisting primarily of hexa-, hepta-, and octaesters formed by the reaction of sucrose with fatty acids derived form edible oil sources, including soybean, corn, and cottonseed.
How is olestra metabolized?
Olestra is a non-caloric fat substitute consisting of fatty acids esterified to sucrose. Previous work has shown that olestra is not metabolized in the gut and is excreted unmodified in human feces.
What is sucrose polyester?
Sucrose polyester (SPE) is a lipid synthesized from sucrose and fatty acid methyl esters. SPE has physical and organoleptic properties that closely resemble triglycerides, but it is not hydrolysed in the intestine and therefore not absorbed.
What are Olean products?
Olestra, also referred to as Olean, is a fat- and calorie-free additive that is typically found in foods such as corn chips, French fries, and other manufactured snack foods. There are nine certified color additives approved by the Food and Drug Administration …
What does olestra mean?
: a noncaloric fat substitute consisting of a series of compounds that are sucrose esters of six to eight fatty acids resistant to absorption by the digestive system because of their large size.
What is olestra Olean quizlet?
olestra. olestra (also known by its brand name Olean) is a fat substitute that adds no fat, calories, or cholesterol to products. It has been used in the preparation of otherwise high-fat foods such as potato crisps, thereby lowering or eliminating their fat content.
How do you make olestra?
Chemists create olestra by combining two naturally occurring substances, sucrose and vegetable oil, to form a molecule that is not found anywhere in nature. Yet the resulting synthetic molecule tastes just like real fats do! Fat is what makes candy bars and french fries so filling (and fattening).
What kind of fat is olestra made out of?
It does not add any calories as a normal fat would. Olestra is part fatty acids from cottonseed or soybean oils and part sucrose rather than glycerol in triglycerides. The six to eight fatty acids are bonded to the hydroxyl or alcohol groups on the sucrose using an ester synthesis reaction.
What is the chemical formula for sucrose in PubChem?
PubChem CID 5988 Structure Find Similar Structures Chemical Safety Laboratory Chemical Safety Summary (LCSS Molecular Formula C12H22O11 Synonyms sucrose 57-50-1 saccharose Cane sugar Ta
What makes the olestra molecule look like an octopus?
Olestra is part fatty acids from cottonseed or soybean oils and part sucrose rather than glycerol in triglycerides. The six to eight fatty acids are bonded to the hydroxyl or alcohol groups on the sucrose using an ester synthesis reaction. This makes for a rather large molecule that looks like an octopus with many arms.
Which is the generalized structure of olestra polyester?
Generalized structure of Olestra. QOlestra is a sucrose polyester or SPE. QSPEs are synthesized by reacting fatty acids with hydroxyl groups of sucrose in the presence of catalysts.