Straight-grade and high-yield flours milled from red, white and low-polyphenol oxidase (PPO) activity white wheats were wet-milled to give gluten, starch, tailings and water-soluble fractions. Wet gluten fractions were either oven-dried or freeze-dried and ground to obtain dry gluten. White wheats yielded slightly more flour with higher lightness (L*) than the red wheat. The wet-milling properties of all flours were comparable. The wet and oven-dried gluten fractions isolated from the low-PPO flours were the lightest, followed by the gluten fractions from the white and red wheat flours. The L* of the oven-dried gluten fractions from the low-PPO flours were ~ 1-3% higher than those from the white and red wheat flours. As the flour yield increased, the L* of the dry gluten fractions from all flours decreased likewise. However, the high-yield low-PPO white wheat flour gave the dry gluten with almost equal L* to the gluten isolated from the straight-grade red wheat flour, indicating the potential of the low-PPO white wheat flour in manufacturing brighter gluten.
AACC (2000). Approved Methods of the AmericanAssociation of Cereal Chemists. 10th edn.St Paul, MN: American Association of Cereal Chemists .
2.
Abrol Y.P. , Uprety D.C. , Ram A. and Tikoo S. (1971). Phenol color reaction as an indicator of chapatti quality in wheat . SABRAO Newsletter3: 17–21 .
3.
Anderson R.A. (1967). Manufacture of wheat starch. In: Whistler R.L. and Paschall E.F. (eds), Starch: Chemistry and Technology, Vol. 2. New York: Academic Press , pp. 53–63.
4.
Baik B.-K. , Czuchajowska Z. and Pomeranz Y. (1995). Discoloration of dough for oriental noodles . Cereal Chemistry72: 198–205 .
5.
Coseteng M.Y. and Lee C.Y. (1987). Changes in apple polyphenol oxidase and polyphenol concentrations in relation to degree of browning . Journal of Food Science52: 985–989 .
6.
Czuchajowska Z. and Pomeranz Y. (1993). Protein concentrate and prime starch from wheat flours . Cereal Chemistry70: 701–706 .
7.
Dexter J.E. , Preston K.R. , Matsuo R.R. and Tipples K.H. (1984). Development of high extraction flow for the GRL pilot mill to evaluate Canadian wheat potential for the Chinese market . Canadian Institute of Food Science and Technology Journal14: 253–259 .
8.
Faridi H. (1988). Flat breads. In: Pomeranz Y. (ed.), Wheat: Chemistry and Technology, Vol. 2, 3rd edn.St Paul, MN: American Association of Cereal Chemists , pp. 457–506.
9.
Fellers D.A. (1973). Fractionation of wheat into major components. In: Pomeranz Y. (ed.), Industrial Uses of Cereals. St. Paul, MN: American Association of Cereal Chemists . pp. 207–228.
10.
Grace G. (1988). Preparation of vital wheat gluten. In: Applewhite T.H. (ed.), Proceedings of the World Congress on Vegetable Protein Utilization in Human Foods and Animal Feedstuffs. Champaign, IL: American Oil Chemists Society , pp. 112–115.
11.
Hatcher D.W. and Kruger J.E. (1993). Distribution of polyphenol oxidase in flour millstreams of Canadian common wheat classes milled to three extraction rates . Cereal Chemistry70: 51–55 .
12.
Hoseney R.C. (1994). Principles of Cereal Science and Technology. 2nd edn.St Paul, MN: American Association of Cereal Chemists , pp. 70–71.
13.
IWGA . (1989). Wheat gluten – a natural protein for the future – today. Prairie Village, KS: International Wheat Gluten Association .
14.
Kempf W. and Rohrmann C. (1989). Process for the industrial production of wheat starch from whole wheat. In: Pomeranz Y. (ed.), Wheat Is Unique. St Paul, MN: American Association of Cereal Chemists , pp. 521–540.
15.
Kim W. , Seib P.A. and Chung O.K. (1991). Origin of color in vital wheat gluten . Cereal Foods World36: 954–959 .
16.
Kobrehel K. , Laignelet B. and Feillet P. (1972). Study of some biochemical factors of macaroni brownness . Cereal Science Today17: 105–107 .
17.
Kruger J.E. , Matsuo R.R. and Preston K. (1992). A comparison of methods for the prediction of Cantonese noodle color . Canadian Journal of Plant Science72: 1021–1029 .
18.
Lamkin W.M. , Miller B.S. , Nelson S.W. , Traylor D.D. and Lee M.S. (1981). Polyphenol oxidase activities of hard red winter, soft red winter, hard red spring, white common, club, and durum wheat cultivars . Cereal Chemistry58: 27–31 .
19.
Li Y.Z. and Posner E.S. (1989). Determination of wheat milling potential and its influence on flour quality deterioration rate . Cereal Chemistry66: 365–368 .
20.
Maijala M. (1976). Environment and product gain in new wet wheat process . Food Engineering48: 73–75 .
21.
Maningat C.C. and Bassi S.D. (1999). Wheat starch production. In: Tumbleson M. , Yang P. and Eckhoff S. (eds), Proceedings of International Starch Technology Conference. Urbana, IL: University of Illinois , pp. 26–40.
22.
Marsh D.R. and Galliard T. (1986). Measurement of polyphenol oxidase activity in wheat-milling fractions . Journal of Cereal Science4: 241–248 .
23.
Martin T.J. , Fritz A. and Shroyer J.P. (2001). Lakin hard white wheat (L-922). Manhattan, KS: Kansas State University Agricultural Experiment Station and Cooperative Extension Service .
24.
McFall K.L. , Madl R.L. and Gilpin J. (2003). Hard white wheat – capitalizing on milling advantages. Manhattan, KS: Kansas State University Agricultural Experiment Station and Cooperative Extension Service .
25.
Meuser F. , Kutschbach A. , Kieffer R. , Wieser H. and Schieberle P. (2002). Investigation of the effect of hot air drying of wheat gluten on its viscoelasticity and baking performance by a systems analytical model . Cereal Chemistry79: 617–623 .
26.
Okot-Kotber M. , Liavoga A. , Yong K.-J. and Bagorogoza K. (2001). Activity and inhibition of polyphenol oxidase in extracts of bran and other milling fractions from a variety of wheat cultivars . Cereal Chemistry78: 514–520 .
27.
Park W.J. , Shelton D.R. , Peterson C.J. , Martin T.J. , Kachman S.D. and Wehling R.L. (1997). Variation in polyphenol oxidase activity and quality characteristics among hard white wheat and hard red winter wheat samples . Cereal Chemistry74: 7–11 .
28.
Rani K.U. , Rao U.J.S.P. , Leelavathi K. and Rao P.H. (2001). Distribution of enzymes in wheat flour mill streams . Journal of Cereal Science34: 233–242 .
29.
Sayaslan A. (2004). Wet-milling of wheat flour: industrial processes and small-scale test methods . Lebensmittel-Wissenschaft und-Technologie37: 499–515 .
30.
Seib P.A. , Liang X. , Guan F. , Liang Y.T. and Yang H.C. (2000). Comparison of Asian noodles from some hard white and hard red wheat flours . Cereal Chemistry77: 816–882 .
31.
Vadlamani K.R. and Seib P.A. (1996). Reduced browning in raw oriental noodles by heat and moisture treatment of wheat . Cereal Chemistry73: 88–95 .
32.
Wadhawan C.K. (1988). Fundamental studies on vitality of gluten for breadmaking. Ph.D. Dissertation. Winnipeg, Canada: University of Manitoba.
33.
Whitaker J.R. and Lee C.Y. (1995). An overview – recent advances in chemistry of enzymatic browning. In: Lee C.Y. and Whitaker J.R. (eds), Enzymatic Browning and Its Prevention. Washington, DC: American Chemical Society , pp. 2–7.
34.
Witt W. (1997). Modern method of separating the components of wheat. In: Steele J.L. and Chung O.K. (eds), Proceedings of International Wheat Quality Conference. Manhattan, KS: Grain Industry Alliance , pp, 231–248.
