Title Biotransformation of Chlorella vulgaris through lactic acid fermentation for improved functional value in food applications
Authors Bilgin, H ; Kitryte-Syrpa, V ; Syrpas, M
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Is Part of 3rd COST CA22134 FoodWaStop meeting “Sustainable network for agrofood loss and waste prevention, management, quantification and valorisation”: 5-6 February 2025, Zadar, Croatia: abstract book.. Zadar : University of Zadar. 2025, P4.29., p. 74
Keywords [eng] fermentation, bioactive compounds ; microalgae ; chlorella vulgaris ; antioxidant capacity
Abstract [eng] The increasing demand for health-oriented diets has intensified interest in microalgae due to their high nutritional value and bioactive potential. Although fermentation can enhance the nutritional quality of microalgal biomass, the rigid cell wall of Chlorella vulgaris presents a significant challenge. Accordingly, this study evaluates the suitability of Chlorella vulgaris as a substrate for fermentation by lactic acid bacteria. To enhance fermentation efficiency, various pretreatment methods were tested, including acid hydrolysis, combined ultrasonication-acid, and enzymatic hydrolysis. Among them, enzymatic treatment was selected for its superior release of fermentable carbon compounds essential for microbial growth. Subsequently, the effect of L. plantarum and L. brevis on fermentation performance was tested, with L. plantarum showing better results, achieving the highest microbial growth (from 6 to 10.12 log CFU/mL), lactic acid production (17.35 gL-1), and the highest acidification rate, reflected by pH reduction to 3.6. Additionally, in vitro antioxidant capacity and antimicrobial activity were evaluated, and significant improvement was observed. The samples treated with viscozyme and combined treatment, and further fermented with L. plantarum, exhibited inhibitory effects against majority of strains. These findings demonstrate the potential of Chlorella vulgaris to generate value-added fermented products with enhanced functional properties to enhance formulations.
Published Zadar : University of Zadar
Type Conference paper
Language English
Publication date 2025