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  4. Citric acid is industrially best produced by:

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Q. Citric acid is industrially best produced by:

Delhi UMET/DPMTDelhi UMET/DPMT 2006

Solution:

Citric acid is produced by the fermentation of suger by Aspergillus niger, Mucor sp. and yeast. Lactic acid (first organic acid to be fermented) is obtained by the activity of a number of bacteria like Streptococcus lactis, Lactobacillus delbreukii, L. bulgaricus over a variety of nutrient medium like hydrolysed corn, or potato starch, molasses etc. Gluconic acid is manufactured through the Penicillium purpurogenum.