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Cereal Research Communications
Authors: E. Martínez-Cruz, E. Espitia-Rangel, H. Villaseñor-Mir, J. Molina-Galán, I. Benítez-Riquelme, A. Santacruz-Varela and R. Peña-Bautista

The influence of allelic variants of HMW Gand LMWG on viscoelastic properties of dough was evaluated in parents and 98 recombinant lines derived from the crosses Rebeca F2000 × Verano S91 and Galvez M87 × Bacanora T88. Genotypes were grown at Roque, Guanajuato during the Spring-Summer of 2008. Studied traits were mixing time, mixing stability and over-mixing tolerance, general strength of the dough and tenacity/extensibility ratio. HMWG alleles 1, 2*, 17 + 18 and 5 + 10 favored the quality of the dough and variants 2 + 12 and 7 + 9 were associated with low levels of gluten strength. A 7 + 9 allele was associated with genotypes prone to form tenacious dough. Alleles Glu-A3c, Glu-A3e, Glu-B3g and Glu-B3h from the cross Rebeca F2000 × Verano S91 affected positively the quality of gluten, while allelic variants Glu-A3b, Glu-B3h and Glu-D3c in the cross Galvez M87 × Bacanora T88 were associated with higher quality standards and its counterparts Glu-A3c, Glu-B3j and Glu-D3b were associated to lower quality parameters. Results also shown interaction among loci, hence breeders need to be aware not only of the effect of individual alleles but also its interaction.

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Bloksma, A.H. (1990): Dough structure, dough rheology, and baking quality. Cereal Foods World , 35 , 237–244. Bloksma A.H. Dough structure, dough rheology, and baking quality

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. Koca , A.F. , Anil , M. 2007 . Effect of flaxseed and wheat flour blends on dough rheology and bread quality . J. Sci. Food Agri. 87 : 1172 – 1175 . Mazza , G

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For six wheat varieties with different quality it was shown that GSH-dependent protein-disulphide oxidoreductase (TPDO) increases the activity to the third week after anthesis, a period of maximum synthesis of storage proteins in wheat kernels. The study revealed a correlation between TPDO activity in maturing kernels and dough stiffness. The addition of exogenous TPDO to flour significantly increased dough extensibility (from 17 to 49% for cultivars with different quality), which implies the ability of the enzyme to disrupt SS bonds in high-molecular weight gluten polymers.

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Acta Alimentaria
Authors: D. Šoronja Simović, N. Filipović, Z. Šereš, J. Gyura, A. Jokić and B. Pajin

Research on the effects of additives produced from sugar beet is aimed at satisfying the daily intake of dietary fibre in the range of 25–35 g. Bakery products are usually consumed several times a day and this offers the possibility of incorporating dietary fibres from sugar beet. The addition of this additive to white flour can eliminate the negative effect of phytic acid, present in whole-grain cereal products, which inhibits the mineral intake. In the aim to decrease and eliminate adverse effects of sugar beet fibres on dough rheology and bread quality, optimal quantities of shortening and milk powder to the recipes were tested in order to counter addition of balance such effects. The influence of shortening and milk powder on characteristics of dough enriched with fibres (proving time and dough level) and parameters of bread quality (volume and crumb quality) was traced in two groups of samples: first without and second with 5% of added gluten. Applying regression analysis on measured parameters a mathematical model was defined. Based on presented data and regression analysis concerning samples with and without gluten, it can be stated that fibres enriched bread of the best quality can be made with gluten, shortening and milk powder at the level of 5%, 5% and 2%, respectively.

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37 245 249 Weipert, D. (1990): The benefits of basic rheometry in studying dough rheology. Cereal Chem. , 67 , 311

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, M. , Jimenez , S. , Ruiz , E. & Oliete , B. ( 2011 ): Effect of extruded wheat bran on dough rheology and bread quality . LWT –Food Sci. Technol. , 44 , 2231 – 2237

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828 Dobraszczyk, B.J. 2004. Wheat: Dough rheology. In: Wrigley, C., Corke, H., Walker, C. (eds), Encyclopedia of Grain Science, Vol. 3. Academic Press, Oxford, UK, pp. 400

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, L. 2007. Reomixer TM — Wheat Dough Rheology and Baking Quality by Multivariate Analysis. http://www.reologen.se Wilkstrőm, K., Bohlin, L. 1996. Multivariate analysis as a tool to predict bread volume from

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Caballero, P.A., Gómez, M. & Rosell, C.M. (2007): Improvement of dough rheology, bread quality and bread shelf-life by enzymes combination. J. Fd Engng , 81 , 42

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