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Optimization of Aspergillus oryzae S2 α-amylase, ascorbic acid, and glucose oxidase combination for improved French and composite Ukrainian wheat dough properties and bread quality using a mixture design approach

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Abstract

A simplex-centroid experimental design was used for the optimization of both reducing and oxidizing improvers, namely Aspergillus oryzae S2 α-amylase (Amy), ascorbic acid (Asc), and glucose oxidase (GOD). This optimization was performed to enhance the dough and breadmaking qualities of soft French wheat flour and a composite counterpart that contained 30% Ukrainian wheat flour. Statistically significant correlations were calculated between the W index and textural parameters (e.g., dough chewiness and bread cohesiveness). The findings revealed that while the best mixture for French flour comprised 21.8% of Amy, 41.2% of Asc, and 37% of GOD, for the composite counterpart, it comprised 2.3% of Amy, 66% of Asc, and 31.7% of GOD. These optimized mixtures rearranged soft French wheat flour and its composite counterpart to a good quality and an improved flour texture, respectively. Additionally, they increased the loaf specific volumes of the breads made from soft French wheat flour and its counterpart by 25.8 and 45.43%, respectively, significantly decreased the breads’ susceptibility to microbial contamination, and reclassified the breads as “good” in terms of sensory attributes.

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Authors and Affiliations

  1. Laboratory of Microbial Biotechnology and Engineering Enzyme (LMBEE), Centre of Biotechnology of Sfax, Sidi Mansour Road Km 6, P.O.Box 1177, Sfax, 3038, Tunisia

    Mouna Sahnoun, Mouna Kriaa, Samir Bejar & Radhouane Kammoun

  2. Higher Institute of Biotechnology of Sfax, Soukra Road Km 4.5; BP.26, 3038, Sfax, Tunisia

    Souhail Besbes

  3. Society of Alimentary Production, Gremda Road Km 9.5, Sfax, Tunisia

    Mohamed Jardak

Authors
  1. Mouna Sahnoun
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  2. Mouna Kriaa
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  3. Souhail Besbes
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  4. Mohamed Jardak
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  5. Samir Bejar
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  6. Radhouane Kammoun
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Sahnoun, M., Kriaa, M., Besbes, S. et al. Optimization of Aspergillus oryzae S2 α-amylase, ascorbic acid, and glucose oxidase combination for improved French and composite Ukrainian wheat dough properties and bread quality using a mixture design approach. Food Sci Biotechnol 25, 1291–1298 (2016). https://doi.org/10.1007/s10068-016-0203-7

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  • DOI: https://doi.org/10.1007/s10068-016-0203-7

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