International Journal of Nutrition and Food Sciences

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Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese

Received: 14 August 2015    Accepted: 22 August 2015    Published: 03 September 2015
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Abstract

In this study, a total of 46 exopolysaccarides (EPS) producers were isolated from different Egyptian fermented milk products. Among these isolates, strain H2 was characterized and identified as Lactobacillus pentosus with similarity 98% based on 16S rRNA gene sequencing and phenotypic characterization. The maximum EPS secretion and cell biomass of strain H2 were 2.22 and 2.64 (g/L) at 30oC after 72 and 96 h, respectively. Among eight sugars tested for EPS production, it was noticed that all industrial by-products tested were significantly increased the secretion of EPS from strain H2. The highest EPS amount was recorded for molasses and date debs permeate followed by lactose and glucose which were 4.54, 3.08, 2.86, 2.68 and 2.56 (g/l) respectively. Electrospray Ionization Mass Spectrometry (ESI MS) indicated that EPS of strain H2 was heteropolymer and consists of D-glucose, D-glucuronic acid and L-rhamnose. Different concentration of the purified EPS isolated from Lactobacillus pentosus strain H2 were applied to low fat UF-soft cheese and yoghurt. The results of these experiments indicated the purified EPS of strain H2 significantly improved the organoleptic properties including texture, flavors and mouth feel of both low fat cheese and yoghurt. Furthermore, all parameters of rheological properties of both products including firmness, cohesiveness, gumminess, chewiness, springiness were significantly improved as the purified EPS concentrations increased. The best sensory evaluation score was recorded for low fat cheese and yoghurt fortified with EPS 0.4 and 0.8% which were 94.90 and 95.60, respectively. Finally, the problems like bitterness, low viscosity, high syneresis formation and defects of consistency which are frequently encountered of fermented milk products can be solved by using purified EPS.

DOI 10.11648/j.ijnfs.20150405.17
Published in International Journal of Nutrition and Food Sciences (Volume 4, Issue 5, September 2015)
Page(s) 555-564
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Lactic Acid Bacteria, Exopolysaccharids, Low Fat Cheese and Yoghurt, Organoleptic, Rheological Properties

References
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Author Information
  • Deptartment of Agricultural Microbiology, Faculty of Agriculture, Fayoum University, Fayoum, Egypt; Department of Biology, Faculty of Applied Science, Umm Al-Qura University, Makkah, KSA

  • Department of Dairy Science and Technology, Faculty of Agriculture, Fayoum University, Egypt

  • Department of Dairy Science and Technology, Faculty of Agriculture, Fayoum University, Egypt

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    Khaled Elbanna, Wedad Metry, Hosam Elgarhy. (2015). Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese. International Journal of Nutrition and Food Sciences, 4(5), 555-564. https://doi.org/10.11648/j.ijnfs.20150405.17

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    ACS Style

    Khaled Elbanna; Wedad Metry; Hosam Elgarhy. Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese. Int. J. Nutr. Food Sci. 2015, 4(5), 555-564. doi: 10.11648/j.ijnfs.20150405.17

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    AMA Style

    Khaled Elbanna, Wedad Metry, Hosam Elgarhy. Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese. Int J Nutr Food Sci. 2015;4(5):555-564. doi: 10.11648/j.ijnfs.20150405.17

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  • @article{10.11648/j.ijnfs.20150405.17,
      author = {Khaled Elbanna and Wedad Metry and Hosam Elgarhy},
      title = {Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese},
      journal = {International Journal of Nutrition and Food Sciences},
      volume = {4},
      number = {5},
      pages = {555-564},
      doi = {10.11648/j.ijnfs.20150405.17},
      url = {https://doi.org/10.11648/j.ijnfs.20150405.17},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ijnfs.20150405.17},
      abstract = {In this study, a total of 46 exopolysaccarides (EPS) producers were isolated from different Egyptian fermented milk products. Among these isolates, strain H2 was characterized and identified as Lactobacillus pentosus with similarity 98% based on 16S rRNA gene sequencing and phenotypic characterization. The maximum EPS secretion and cell biomass of strain H2 were 2.22 and 2.64 (g/L) at 30oC after 72 and 96 h, respectively. Among eight sugars tested for EPS production, it was noticed that all industrial by-products tested were significantly increased the secretion of EPS from strain H2. The highest EPS amount was recorded for molasses and date debs permeate followed by lactose and glucose which were 4.54, 3.08, 2.86, 2.68 and 2.56 (g/l) respectively. Electrospray Ionization Mass Spectrometry (ESI MS) indicated that EPS of strain H2 was heteropolymer and consists of D-glucose, D-glucuronic acid and L-rhamnose. Different concentration of the purified EPS isolated from Lactobacillus pentosus strain H2 were applied to low fat UF-soft cheese and yoghurt. The results of these experiments indicated the purified EPS of strain H2 significantly improved the organoleptic properties including texture, flavors and mouth feel of both low fat cheese and yoghurt. Furthermore, all parameters of rheological properties of both products including firmness, cohesiveness, gumminess, chewiness, springiness were significantly improved as the purified EPS concentrations increased. The best sensory evaluation score was recorded for low fat cheese and yoghurt fortified with EPS 0.4 and 0.8% which were 94.90 and 95.60, respectively. Finally, the problems like bitterness, low viscosity, high syneresis formation and defects of consistency which are frequently encountered of fermented milk products can be solved by using purified EPS.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Exopolysaccharide from Lactobacillus pentosus Strain H2 and Its Impact on Rheological Properties and the Sensory Evaluation of Low Fat Yoghurt and UF-Soft Cheese
    AU  - Khaled Elbanna
    AU  - Wedad Metry
    AU  - Hosam Elgarhy
    Y1  - 2015/09/03
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    N1  - https://doi.org/10.11648/j.ijnfs.20150405.17
    DO  - 10.11648/j.ijnfs.20150405.17
    T2  - International Journal of Nutrition and Food Sciences
    JF  - International Journal of Nutrition and Food Sciences
    JO  - International Journal of Nutrition and Food Sciences
    SP  - 555
    EP  - 564
    PB  - Science Publishing Group
    SN  - 2327-2716
    UR  - https://doi.org/10.11648/j.ijnfs.20150405.17
    AB  - In this study, a total of 46 exopolysaccarides (EPS) producers were isolated from different Egyptian fermented milk products. Among these isolates, strain H2 was characterized and identified as Lactobacillus pentosus with similarity 98% based on 16S rRNA gene sequencing and phenotypic characterization. The maximum EPS secretion and cell biomass of strain H2 were 2.22 and 2.64 (g/L) at 30oC after 72 and 96 h, respectively. Among eight sugars tested for EPS production, it was noticed that all industrial by-products tested were significantly increased the secretion of EPS from strain H2. The highest EPS amount was recorded for molasses and date debs permeate followed by lactose and glucose which were 4.54, 3.08, 2.86, 2.68 and 2.56 (g/l) respectively. Electrospray Ionization Mass Spectrometry (ESI MS) indicated that EPS of strain H2 was heteropolymer and consists of D-glucose, D-glucuronic acid and L-rhamnose. Different concentration of the purified EPS isolated from Lactobacillus pentosus strain H2 were applied to low fat UF-soft cheese and yoghurt. The results of these experiments indicated the purified EPS of strain H2 significantly improved the organoleptic properties including texture, flavors and mouth feel of both low fat cheese and yoghurt. Furthermore, all parameters of rheological properties of both products including firmness, cohesiveness, gumminess, chewiness, springiness were significantly improved as the purified EPS concentrations increased. The best sensory evaluation score was recorded for low fat cheese and yoghurt fortified with EPS 0.4 and 0.8% which were 94.90 and 95.60, respectively. Finally, the problems like bitterness, low viscosity, high syneresis formation and defects of consistency which are frequently encountered of fermented milk products can be solved by using purified EPS.
    VL  - 4
    IS  - 5
    ER  - 

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