JACEN  Vol.3 No.2 B , April 2014
Multivariate Study and Analysis of the Production of Citric Acid from Dates by Surface Method
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.


Cite this paper
Al-Shoaily, K. , Al-Amri, M. , Al-Rawahi, F. , Al-Sidrani, M. and Al-Ghafri, A. (2014) Multivariate Study and Analysis of the Production of Citric Acid from Dates by Surface Method. Journal of Agricultural Chemistry and Environment, 3, 20-25. doi: 10.4236/jacen.2014.32B004.
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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