Optimization of fermentation conditions for the production of the mezcal from Agave salmiana using response surface methodology

Antonio De León-Rodríguez, Pilar Escalante-Minakata, Ana P. Barba de la Rosa, Hans P. Blaschek

Research output: Contribution to journalArticlepeer-review

Abstract

Response surface methodology was applied to optimize the fermentative phase for the mezcal production from Agave salmiana. A 3k factorial design was used to obtain models describing the relationship between the ethanol production, process productivity, and product yield with respect to the fermentation temperature and the initial sugar concentration. The results showed that the fermentative conditions affected the composition of higher alcohols (referred as a quality indicator) in the mezcal as well as the amount of ethanol. The highest ethanol production was attained by employing the following predicted optimum operational conditions: temperature of 28 °C and an initial sugar concentration of 105 g/l. However, the maximum productivity process was attained with 34.6 °C and 90 g/l, whereas the maximum product yield and the best quality mezcal at 28 °C and 77 g/l. Results show that the simultaneous optimization for high ethanol production and fast production rate are not compatible, since high ethanol production requires a high substrate concentration, which in turn inhibit the growth rate.

Original languageEnglish (US)
Pages (from-to)76-82
Number of pages7
JournalChemical Engineering and Processing: Process Intensification
Volume47
Issue number1
DOIs
StatePublished - Jan 1 2008

Keywords

  • Alcoholic fermentation
  • Redox
  • Response surface methodology
  • Spirits
  • Substrate inhibition

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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