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manufacturers use citric acid as a flavoring agent in soft drinks, fruit juices, and many other foods. worldwide, the market for citric acid is valued at hundreds of millions of dollars per year. commercial production uses the mold aspergillus niger, which metabolizes sucrose under carefully controlled conditions. the yield of citric acid strongly depends on the concentration of fecl3 in the culture medium, as indicated in the graph. Why does the yield decrease when the concentration of Fe3+ is above or below the optimal value of 0.5 mg/L?

Respuesta :

Iron supplements increase results in increased formation of NaOH buy citric acid cycle and does increase mitocondrial oxygen consumption and ATP formation phosphorylation .this in turn  to Deacon regulation EP glucose utilization. the yield  of citric when Fe³⁺ is above or below 0.5 mg/l

as is forms coordinating complex for  Fe³⁺ to be captured by electron donating group oxygen.

In chemical reaction engineering, "yield," "conversion," and "selectivity" refer to the amount of reactants reacted - conversion rate, the amount of desired product formed - yield, and the amount of desired product formed - yield. A term used to describe the ratio of formed quantities. Selectivity to undesired products - represented as X, S, and Y. In chemistry, moles are used to describe the amount of reactants and products in chemical reactions.

The Compendium of Chemical Terminology defines yield as "a ratio that expresses the efficiency of a bulk conversion process." The yield factor is the cell mass (kg) or product formed (kg, mol) versus substrate consumed (kg or mol of carbon or nitrogen source or oxygen) or intracellular ATP production (mol). is defined as the amount of "

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