Effect of Saccharomyces cerevisiae Fulvic Acid Yield and Fourier Transform Infrared Spectroscopy Characteristics

Abstract

Fulvic acid, a humic substance with unique properties, has sparked interest due to its potential applications in the treatment of allergicdiseases, Alzheimer's disease, and as a microplastic adsorbent. However, conventional extraction methods produce insufficient quantitiesfor commercial use, which has prompted research to enhance fulvic acid production. In this study, we investigated the impact ofSaccharomyces cerevisiae fermentation on the yield and spectral characteristics of fulvic acid extracted from white peat. Fulvic acidwas extracted from both S. cerevisiae-treated and untreated white peats using acid precipitation. The yield of fulvic acid from the S. cerevisiae treated group reached its highest at 3.5 % after 72 hr of fermentation, which was significantly higher than the untreatedgroup (1.1 %). Fourier Transform Infrared (FTIR) analysis revealed similarities in functional groups and characteristic absorption bandsbetween the treated and untreated fulvic acid samples. These findings suggest that S. cerevisiae fermentation can increase the yield offulvic acid extracted from white peat, providing a promising approach for enhancing the commercial viability of fulvic acid production.