info:eu-repo/semantics/article
Bacterial cellulose films production by Kombucha symbiotic community cultured on different herbal infusions
Fecha
2022-03Registro en:
Ramírez Tapias, Yuly Andrea; Di Monte, Maria Victoria; Peltzer, Mercedes Ana; Salvay, Andrés Gerardo; Bacterial cellulose films production by Kombucha symbiotic community cultured on different herbal infusions; Elsevier; Food Chemistry; 372; 3-2022; 1-11
0308-8146
CONICET Digital
CONICET
Autor
Ramírez Tapias, Yuly Andrea
Di Monte, Maria Victoria
Peltzer, Mercedes Ana
Salvay, Andrés Gerardo
Resumen
The symbiotic community of bacteria and yeast (SCOBY) of Kombucha beverage produces a floating film composed of bacterial cellulose, a distinctive biobased material. In this work, Kombucha fermentation was carried out in six different herbal infusions, where SCOBY was able to synthesise cellulosic films. Infusions of black and green tea, yerba mate, lavender, oregano and fennel added with sucrose (100 g/l) were used as culture media. In all cultures, film production resulted in a maximum after 21 days. Yield conversion, process productivity and antioxidant activity were quantified. Macroscopic and microscopic features of films were determined based on electronic microscopy, calorimetric and mechanical properties and hydration behaviour. Native films from yerba mate had a remarkable antioxidant activity of 93 ± 4% of radical inhibition due to plant polyphenols, which could prevent food oxidation. Results revealed that films retained natural bioactive substances preserving important physicochemical properties, essential for developing active materials.