Enhancing the generation of ethyl acetate in controlled bioreactors

June 29, 2022

Ethyl acetate is a widely used industrial-based solvent. It is presently produced by chemically conversing from fossil resources. Various yeast species are now all set to convert sugars to ethyl acetate under some aerobic conditions. But, performing the synthesis of the ethyl acetate using anaerobic results might present you with an enhanced level of production efficiency and make the process more viable under economic circumstances.

Production of hypoxic ethyl acetate at many levels in modified Bacteria

The current output of the ethyl acetate from the glucose will result in the NADH surplus. Here, the yeasts are just able to dispose of the surplus by respiration. It will render ethyl acetate production within the aerobic process.

1. During such instances, a significant part of the glucose gets oxidized in the TCA cycle, leading to lower yields.

2. However, larger-scale aerobic cultivations are limited mainly by the oxygen transfer rate because of the lower oxygen solubility. 

3. Another major observed issue in yeast cultivation is the Crabtree effect, which is the unwanted production of ethanol that lowers the yield of the desired product.

4. E.coli and some other bacteria will avoid this redox imbalance by using pyruvate formate lyase. So, the extra redox will be secreted as formate in place of forming NADH.

5. So, in ethyl ethanoate, only 1 mol glucose will be converted through the EMP pathway to the mol NADH and 2 mol pyruvate.

Safety, handling, and first aid for ethyl acetate

While handling ethyl acetate in the workplace, it is always vital to have safer protective equipment by your sides. As ethyl acetate is quite flammable, you must always be cautious and keep this chemical away from sparks, heat, open flames or any environment where ignition becomes possible. While trying to handle ethyl acetate at the workplace, you must always wear safety glasses and gloves and even carry a vapor respirator. 

Ethyl Acetate: Storage & Disposal in a Safe Manner

It is always mandatory to store ethyl acetate in an approved area, away from all ignition forms. This chemical remains sensitive to moisture and must be kept in a well-ventilated place and a sealed container.

1. Be sure to avoid incompatible materials like alkalis, acids and more.

2. Ethyl acetate needs to be disposed of as per the control regulations from the state and federal governments. 

3. Make sure to research well about the disposable method of this chemical before even thinking of working with it. 

Health and Safety Risks Associated with Ethyl Acetate

Even though widely used in multiple household products, ethyl acetate has the power to be quite hazardous if not handled with care, mainly towards accidental exposure. The ethyl acetate is pretty flammable and toxic if ingested or even inhaled. So, this chemical is proven quite dangerous to the internal organs if exposed repeatedly or for a prolonged period. Ethyl acetate can also be irritating if it comes in contact with skin or eyes. So, better watch out while using this chemical!

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