Al-Rawahi, FouziaAl-Amri, MansouraAl-Sidrani, MuhammadAl-Ghafri, Amal2019-03-262019-03-26Khaled Al Shoaili, Fouzia Al-Rawahi, Mansoura Al-Amri, Muhammad Al-Sidrani, Amal Al-Ghafri. (1/4/2014). Multivariate Study and Analysis of the Production of Citric Acid from Dates by Surface Method. Journal of Agricultural Chemistry and Environment, 3, pp. 20-25.https://hdl.handle.net/20.500.11766/9735The 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.PDFCC-BY-4.0citricJournal ArticleOpen access