• Published Papers
  • Open Access
  • Multivariate Study and Analysis of the Production of Citric Acid from Dates by Surface Method
  • DOI: 10.4236/jacen.2014.32B004   PP.20 - 25, Pub. Date: May 2 , 2014
  • Author(s)
  • Khalid Al-Shoaily, Mansoura Al-Amri, Fouzia Al-Rawahi, Muhammad Al-Sidrani, Amal Al-Ghafri
  • ABSTRACT
  • The production of citric acid from dates of the date palm Phoenix dactilifera was studied using a full factorial design with two design variables; Aspergillus niger strain, and starter juice treatment. Analyses of data have shown that mould type and the interaction between Aspergillus niger strain + juice treatment had significant effect (P ≥ 0.05) on the final total acidity. It was also found that all design variables and the interaction between them had significant effect (P ≥ 0.05) on the final pH and Total Soluble Solids. The highest total acidity expressed as citric acid was achieved with a commercial strain of Aspergillus niger, and filtered and centrifuged date juice.

  • KEYWORDS
  • Dates; Citric; Aspergillus niger
  • References
  • [1] Al-Farsi, M., Alasalvar, C., et al. (2007) Compositional and Functional Characteristics of Dates, Syrups, and Their By-Products. Food Chemistry, 104, 943-947. http://dx.doi.org/10.1016/j.foodchem.2006.12.051

    [2] Kristiansen, B., et al. (1999) Citric Acid Biotechnology. Taylor & Frances, London.

    [3] Lotfy, W.A., Ghanem, K.M., et al. (2007) Citric Acid Production by a Novel Aspergillus niger Isolate: II. Optimization of Process Parameters through Statistical Experimental Designs. Bioresource Technology, 98, 3470-3477.

    [4] Esbensen, K.H., Guyot, D., et al. (2004) Multivarialte Data Analysis in Practice. Camo Process AS, Oslo.

    [5] Al-Abid, M., Al-Amri, M., et al. (2010) Applying Sub-merged Technique to Produce Citric Acid from Dates. ISHS Acta Horticulture, 882.

    [6] Roukas, T. and Kotzekidou, P. (1997) Pretreatment of Date Syrup to Increase Citric Acid Production. Enzyme and Microbial Technology, 21, 273-276.


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