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ARS Home Midwest Area Madison, Wisconsin U.S. Dairy Forage Research Center Research Publications at this Location





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Title:   Author  item
                                            Ralph, Johnitem
                                            BUNZEL, MIRKO - U. HAMBURG, GERMANYitem
                                            MARITA, JANE - U. WISCONSIN, MADISONitem
                                            Hatfield, Ronalditem
                                            LU, FACHUANG - U. WISCONSIN, MADISONitem
                                            KIM, HOON - U. WISCONSIN, MADISONitem
                                            Grabber, Johnitem
                                            RALPH, SALLY - U. WISCONSIN, MADISONitem
                                            JIMENEZ-MONTEON, GERARDO - U. WISCONSIN, MADISONitem
                                            STEINHART, HANS - U. HAMBURG, GERMANY
  Submitted to: Polyphenols Actualites
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 10/1/2000
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:   Cereals provide dietary fiber, an important nutritional commodity in human and animal foods. So-called "ferulates" in plant fibers cross-link polysaccharides making "diferulates." Cross-linking provides structural  strength but limits the digestibility of the polysaccharides. As ferulates and diferulates are important components of our food, possessing antioxidant and other favorable properties, we analyzed a number of cereals (maize, wheat, rice, wild rice, barley, rye, oats and millet) for these compounds. The whole spectrum of diferulates that had previously been found in plant stems were found at surprisingly high levels (0.2 to 1.3%) in the insoluble fiber fractions; cross-linking is quite effective at a low level. Such high levels made it possible to  identify two new diferulate compounds that had not previously been reported. Wild rice also contained two unique new compounds from cross-linking of related compounds, "sinapates". Since cereals are an important source of dietary fiber, a knowledge of the contributions of ferulates and diferulates will help to elucidate their roles. Such studies are aimed at understanding the limitations to fiber digestibility, and providing a basis for improving plant utilization and agricultural sustainability.
                                Technical Abstract:   Diferulates have varied roles as significant components of many plant fibers. The 4-O-5-coupled dimer has been found in cereal grain insoluble fiber fractions where total diferulate levels range from 2.3 to 12.6 mg/g  (in maize). A new form of the 8-8-dimer has also been found. Disinapates are found in wild rice.


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