COMPOSITION OF CARBOHYDRATES IN FRESH WHEY — Proceeding R-1

Apstrakt

Thermophysiological comfort, which is crucial for the overall satisfaction of the wearer, depends largely on effective heat and moisture regulation. Cotton-polyester blends offer a balanced solution due to the hydrophilic and hydrophobic properties of the respective fibers, improving moisture absorption and the ability to dry quickly. However, the conventional alkaline pretreatment with NaOH is ecologically questionable. In this study, an environmentally friendly alternative by enzymatic pretreatment of 50/50 cottonpolyester fabric with pectinase and esterase enzymes was investigated. The effects on water adsorption were evaluated using vertical wicking (AATCC TM 197-2022), and the subsequent adsorption of fluorescent whitening agents (FWAs), Uvitex® BHT and Uvitex® NFW, was analyzed at three concentrations (1%, 2%, and 10% owf). The results showed that both enzymes improved the adsorption properties, with esterase and its combination with pectinase significantly increasing the whiteness of the fabric due to the higher uptake of Uvitex BHT. The optimal whiteness was achieved with 2% Uvitex BHT, while higher concentrations were required for comparable results with Uvitex NFW. The study shows that enzymatic pretreatment is a sustainable method to improve both sorption and optical properties of cotton-polyester fabrics.

Keywords: tofu whey, HPLC, arabinose, sucrose, sustainable production

Acknowledgment

This work was supported, in part, by the University of Zagreb short-term financial support for the research “Unconventional processes of cotton scouring” TP/2 – 2025.

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