LAB-Yeast Consortia Significantly Reduce Off-Flavors and Antinutrients in Fermented Chickpea Flour

Chickpea flour is a highly nutritious plant-based ingredient rich in protein and fiber, making it a valuable component for diverse food applications. However, its widespread use is often hindered by the presence of antinutritional factors that can impede nutrient absorption, and undesirable off-flavor compounds that negatively impact palatability. These limitations necessitate processing methods that can improve both the nutritional profile and sensory attributes of chickpea flour, thereby expanding its utility in food product development and meeting the growing demand for plant-derived foods.

Researchers investigated the impact of fermentation using Lactic Acid Bacteria (LAB) and yeasts, applied both individually and as consortia, on chickpea flour. The study aimed to assess changes in the flour's microbiological profile, nutritional quality, safety, and volatilome. While specific strains, inoculation rates, fermentation conditions (e.g., temperature, duration), and primary endpoints beyond general quality improvements were not detailed in the provided abstract, the methodology focused on comparing fermented samples against unfermented controls to quantify improvements in sensory and chemical composition.

Fermentation with LAB-yeast consortia effectively enhanced the nutritional quality and safety of chickpea flour while significantly improving its volatilome. Samples fermented with these consortia exhibited lower total volatile levels, which correlated with higher olfactory acceptability. This improvement was primarily driven by a marked reduction in undesirable aldehydes, showing a decrease of up to 70-95% compared to control samples. Concurrently, there was a balanced accumulation of beneficial volatile compounds, including alcohols, esters, ketones, and organic acids, contributing to a more favorable aroma profile. Specific analysis also noted the presence of plantarum LP23 at concentrations of 0.11-0.16 mmol/100 g in certain samples, indicating successful microbial activity. The overall effectiveness of LAB-yeast consortia in modifying the flour's composition was evident. > The most significant finding was the reduction of off-flavor aldehydes by 70-95%, directly enhancing the sensory appeal of chickpea flour.