Fermentation Conditions Affect the Synthesis of Volatile Compounds, Dextran, and Organic Acids by Weissella confusa A16 in Faba Bean Protein Concentrate
Fabio Tuccillo, Yaqin Wang, Minnamari Edelmann, Anna‐Maija Lampi, Rossana Coda, Kati Katina
Foods
Abstract
Fermentation with <i>Weissella confusa</i> A16 could improve the flavor of various plant-based sources. However, less is known about the influence of fermentation conditions on the profile of volatile compounds, dextran synthesis and acidity. The present work investigates the synthesis of potential flavor-active volatile compounds, dextran, acetic acid, and lactic acid, as well as the changes in viscosity, pH, and total titratable acidity, during fermentation of faba bean protein concentrate with <i>W. confusa</i> A16. A Response Surface Methodology was applied to study the effect of time, temperature, dough yield, and inoculum ratio on the aforementioned responses. Twenty-nine fermentations were carried out using a Central Composite Face design. A total of 39 volatile organic compounds were identified: 2 organic acids, 7 alcohols, 8 aldehydes, 2 alkanes, 12 esters, 3 ketones, 2 aromatic compounds, and 3 terpenes. Long fermentation time and high temperature caused the formation of ethanol and ethyl acetate and the reduction of hexanal, among other compounds linked to the beany flavor. Levels of dextran, acetic acid, and lactic acid increased with increasing temperature, time, and dough yield. Optimal points set for increased dextran and reduced acidity were found at low temperatures and high dough yield. Such conditions would result in hexanal, ethyl acetate and ethanol having a relative peak area of 35.9%, 7.4%, and 4.9%, respectively.
Extracted Claims
3 claims extracted from this paper into the knowledge graph
levels of dextran, acetic acid, and lactic acid increase with increasing temperature, time, and dough yield
“Levels of dextran, acetic acid, and lactic acid increased with increasing temperature, time, and dough yield.”
long fermentation time and high temperature cause formation of ethanol and ethyl acetate and reduction of hexanal
“Long fermentation time and high temperature caused the formation of ethanol and ethyl acetate and the reduction of hexanal, among other compounds linked to the beany flavor.”
Response Surface Methodology studies effect of time, temperature, dough yield, and inoculum ratio on synthesis of volatile compounds, dextran, acetic acid, and lactic acid
“A Response Surface Methodology was applied to study the effect of time, temperature, dough yield, and inoculum ratio on the aforementioned responses.”