Author : Baraem M. Ismail
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (786 download)
Book Synopsis The Role of Gluten Proteins in the Baking of Arabic Bread by : Baraem M. Ismail
Download or read book The Role of Gluten Proteins in the Baking of Arabic Bread written by Baraem M. Ismail and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three wheat (Triticum aestivum L.) flours of good (A), medium (B) and poor (C> baking quality were used in studying the effect of protein quality in the baking of Arabic bread. Flours A and C were fractionated into: starch, lipid, solubles and gluten proteins. Glutens A and C were further fractionated into gliadias and glulenins by successive extraction with dilute HCI. Sodium Dodecylsulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) and protein analysis indicated that gluten A has a higher gliadin/glutcnin ratio than gluten C. Upon reconstituiion of flours A and C with their gliadins and glutenins being interchanged, it was observed, using sensory evaluation, that exchange of gliadins did not exert an effect, whereas, exchange of glutenins was detrimental to the baking quality of both flours A and C. Addition of gliadias and glutenins from Hours A and C, at the rate of 1 % and 2%, to flour B had different effects on the quality. Increasing the gliadins proportion yielded loaves with better quality than when increasing the glutenin proportion. It is concluded that the type of glutenin and the gliadin/glutenin ratio are the main determinants of the baking quality of flours intended for Arabic breadmaking.