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. 2018 Sep 6;23(9):2283. doi: 10.3390/molecules23092283

Table 2.

Effect of water presence on the conversion of valeric acid to ethyl valerate and on the specific activity of prepared biocatalysts.

Distilled Water (DW) % m/v Conversion to Ethyl Valerate (mol %) Specific Activity (U/gbiocatalyst)
5 87 269 ± 10
10 85 301 ± 9
20 84 364 ± 11

Reaction conditions: 1:2 molar ratio valeric acid to EtOH, 12% m/v of biosilicified enzyme, 1000 rpm, 40 °C, 2 h CH in batch reactor.