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
, 20-25. doi: 10.4236/jacen.2014.32B004
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