Information AboutFructose |
| CATEGORIES ABOUT FRUCTOSE | |
| monosaccharides | |
| nutrition | |
| sweeteners | |
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Fructose (or '''levulose''') is a simple Sugar ( Monosaccharide ) found in many foods and is one of the three most important Blood Sugar s along with Glucose and Galactose . Honey , tree fruits, Berries , Melons , and some root vegetables, such as Beets , Sweet Potatoes , Parsnips , and Onions , contain fructose, usually in combination with Sucrose and glucose. Fructose is also derived from the digestion of Sucrose , a Disaccharide consisting of glucose and fructose that is broken down by Glycoside Hydrolase Enzymes during digestion. Fructose is the sweetest naturally occurring sugar, estimated to be twice as sweet as sucrose. Fructose is often recommended for, and consumed by, people with Diabetes Mellitus or Hypoglycemia , because it has a very low Glycemic Index (GI) relative to Cane Sugar ( Sucrose ). However, this benefit is tempered by concern that fructose may have an adverse effect on plasma lipid and Uric Acid levels, and the resulting higher blood levels of fructose can be damaging to Proteins (see below). The low GI is due to the unique and lengthy metabolic pathway of fructose, which involves Phosphorylation and a multi-step enzymatic process in the Liver . See Health Effects and Glycation for further information. STRUCTURE D-Fructose, also known as levulose, is a Levorotatory Monosaccharide and an isomer of Glucose ( C 6 H 12 O 6). The chemical composition of fructose is ( C 6 H 12 O 6). Pure fructose has a sweet taste similar to cane sugar, but with a "fruity" aroma. Although fructose is a hexose (6 carbon sugar), it generally exists as a 5-member hemiketal ring (a Furanose ). This structure is responsible for the long metabolic pathway and high reactivity compared to glucose. Isomerism D-Fructose has the same configuration at its penultimate carbon as D- Glyceraldehyde . Fructose is sweeter than glucose because of its Stereomeric structure.
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{{Cite Journallast |
Hughesfirst=Thomascoauthors=Joycelyn Atchison, Jane B Haze/rig, and Buns R Boshellurl=http://wwwajcnorg/cgi/reprint/49/4/658title=CGlycemic responses in insulin-dependent diabetic patients: |
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One Study Concluded That Fructose "produced Significantly Higher Fasting Plasma
| "http://wwwinformationdelightinfo/information/entry/Triglyceride" class="copylinks">Triacylglycerol values than did the glucose diet in men" and "if plasma triacylglycerols are a risk factor for Cardiovascular Disease , then diets high in fructose may be undesirable"{{Cite journallast=Bantlefirst=John Pcoauthors=Susan K Raatz, William Thomas and Angeliki Georgopoulosurl=http://wwwajcnorg/cgi/content/full/72/5/1128title=Effects of dietary fructose on plasma lipids in healthy subjects |
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Fructose Is A
| "http://wwwinformationdelightinfo/information/entry/reducing_sugar" class="copylinks">Reducing Sugar , as are all monosaccharides The spontaneous addition of single sugar molecules to proteins, known as Glycation , is a significant cause of damage in diabetics Fructose appears to be as dangerous as glucose in this regard and so does not seem to be a better answer for diabetes for this reason alone{{Cite journallast=McPhersonfirst=JDcoauthors=Shilton BH, Walton DJurl=title=Role of fructose in glycation and cross-linking of proteins PMID 3132203 |
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Unlike Glucose, Fructose Is Almost Entirely Metabolized In The Liver When Fructose Reaches The Liver, Says Dr William J Whelan, A Biochemist At The University Of Miami School Of Medicine, "the Liver Goes Bananas And Stops Everything Else To Metabolize The Fructose" Eating Fructose As Compared To Glucose Results In Lower Circulating Insulin Levels,
| "http://wwwinformationdelightinfo/information/entry/leptin" class="copylinks">Leptin , and Ghrelin levels postprandially {{Cite journallast=Tefffirst=KLcoauthors=Elliott SS, Tschöp M, Kieffer TJ, Rader D, Heiman M, Townsend RR, Keim NL, D'Alessio D, Havel PJurl=http://wwwncbinlmnihgov/sites/entrezDb=pubmed&Cmd=ShowDetailView&TermToSearch=15181085&ordinalpos=16&itool=EntrezSystem2PEntrezPubmedPubmed_ResultsPanelPubmed_RVDocSum Fulltexttitle=Dietary fructose reduces circulating insulin and leptin, attenuates postprandial suppression of ghrelin, and increases triglycerides in women PMID 15181085 |
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