Physicochemical and Functional Properties of Yeast-Fermented Cabbage

Area of Science:

• Food Science and Technology
• Microbiology
• Nutraceuticals

Background:

• Microbial fermentation is a key strategy for enhancing the functional properties of plant-based foods.
• Cabbage is a nutrient-rich vegetable with potential for functional improvement through fermentation.

Purpose of the Study:

• To investigate the impact of yeast fermentation on the physicochemical and functional attributes of cabbage.
• To explore the potential of developing novel, functional food products from yeast-fermented cabbage.

Main Methods:

• Eight food-grade yeasts were screened for fermentation efficiency in a 10% cabbage powder solution.
• Physicochemical properties, sulforaphane content, antioxidant capacity, and anti-inflammatory activity were analyzed.
• Cytotoxicity and effects on nitric oxide and reactive oxygen species production were assessed in murine RAW 264.7 cells.

Main Results:

• Saccharomyces cerevisiae and Saccharomyces boulardii demonstrated the highest fermentation efficiency, eliminating soluble sugars within 12 hours.
• Yeast-fermented cabbage exhibited a five-fold increase in sulforaphane content compared to unfermented cabbage.
• Fermented cabbage showed significant radical-scavenging capacity and suppressed inflammatory markers (nitric oxide and reactive oxygen species) in cell assays.

Conclusions:

• Yeast fermentation effectively modifies cabbage, enhancing its nutritional and functional value.
• Saccharomyces boulardii fermentation shows particular promise for developing anti-inflammatory cabbage products.
• This study supports yeast fermentation as a viable method for creating improved, functional cabbage-based foods.