Title
Fermentative behavior of the Candida stellata yeast under different aeration conditions
Other title
Comportamiento fermentativo de la levadura Candida stellata en diferentes condiciones de aireación
Date Issued
01 January 2018
Access level
metadata only access
Resource Type
journal article
Author(s)
Publisher(s)
Elfos Scientiae
Abstract
The influence of aeration on the fermentative activity of Candida stellata RIVE 3-16-1 was studied. The strain was cultured either in Erlenmeyer flasks or a bioreactor containing sterilized and aroma-removed apple juice. Cultures in Erlenmeyer flasks were done under shaken or static condition, whereas in the bioreactor, a constant air flow regime was kept. Chemical compounds produced during fermentation were determined by GC and HPLC. The agitation of Erlenmeyer flasks increased the production of total higher alcohols as compared to static culture and enhanced dramatically the ethyl acetate production. Meanwhile, the production of acetic acid and glycerol were higher under static culture. Bioreactor fermentation at constant air flow was important to visualize the effect of oxygen on the production of compounds and its impact in the quality of alcoholic beverages. It is reported a specific growth rate of 0.13 h-1. Aeration promoted the cell growth affecting the ethanol yield. At the end of culture, malic acid naturally present in apple juice and the ethanol produced were consumed after sugar depletion. Moreover, the acetic acid produced at the end of the fermentation served as carbon source too. The best results in terms of acceptability of the fermented beverages were obtained when cultivated statically.
Start page
1211
End page
1217
Volume
35
Issue
1
Language
English
OCDE Knowledge area
Biotecnología agrícola
Ingeniería química
Subjects
Scopus EID
2-s2.0-85126671180
Source
Biotecnologia Aplicada
ISSN of the container
08644551
Sources of information:
Directorio de Producción Científica
Scopus