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In the analysis of the molecular formula of organic molecules, the degree of unsaturation (DU) (also known as the index of hydrogen deficiency (IHD), double bond equivalents (DBE), or unsaturation index [1]) is a calculation that determines the total number of rings and π bonds. A formula is used in organic chemistry to help draw chemical ...
The "degree of unsaturation" is a formula used to summarize and diagram the amount of hydrogen that a compound can bind. Unsaturation can be determined by NMR, mass spectrometry, and IR spectroscopy, or by determining a compound's bromine number or iodine number. [2]
Crotonic acid has 4 carbons, is included in croton oil, and is a trans-2-mono-unsaturated fatty acid.C 3 H 5 CO 2 H, IUPAC organization name (E)-but-2-enoic acid, trans-but-2-enoic acid, numerical representation 4:1, n-1, molecular weight 86.09, melting point 72–74 °C, boiling point 180–181 °C, specific gravity 1.027.
The greater the degree of unsaturation in a fatty acid (i.e., the more double bonds in the fatty acid) the more susceptible it becomes to lipid peroxidation . Antioxidants can protect unsaturated fat from lipid peroxidation.
Iodine numbers are often used to determine the degree of unsaturation in fats, oils and waxes. In fatty acids, unsaturation occurs mainly as double bonds which are very reactive towards halogens, the iodine in this case. Thus, the higher the iodine value, the more unsaturations are present in the fat. [1]
For example, Δ9-desaturase creates a double bond between the ninth and tenth carbon atom from the carboxyl end. Omega - indicating the double bond is created at a fixed position from the methyl end of a fatty acid chain. For instance, ω3 desaturase creates a double bond between the third and fourth carbon atom from the methyl end.
For example, according to the USDA, a large frozen mocha coffee drink contains around 502 calories, 73 grams of sugar and 9.5 grams of saturated fat.
Degree of unsaturation; Saturated fat or saturated fatty acid; Unsaturated fat or unsaturated fatty acid; Non-susceptibility of an organometallic compound to oxidative addition; Saturation of protein binding sites; Saturation of enzymes with a substrate; Saturation of a solute in a solution, as related to the solute's maximum solubility at ...