Production and Characterization of Active Bacterial Cellulose Films Obtained from the Fermentation of Wine Bagasse and Discarded Potatoes by Komagateibacter xylinus

Abstract

Potato waste, such as peels, broken or spoiled potatoes and grape bagasse residues from the winery industry, can be used for the biotechnological production of high-value products. In this study, green, sustainable and highly productive technology was developed for the production of antioxidant bacterial cellulose (BC). The aim of this work was to evaluate the feasibility of a low-cost culture medium based on wine bagasse and potato waste to synthesize BC. Results show that the production of BC by Komagateibacter xylinus in the GP culture medium was five-fold higher than that in the control culture medium, reaching 4.0 g/L BC in 6 days. The compounds of the GP culture medium improved BC production yield. The mechanical, permeability, swelling capacity, antioxidant capacity and optical properties of the BC films from the GP medium were determined. The values obtained for the tensile and puncture properties were 22.77 MPa for tensile strength, 1.65% for elongation at break, 910.46 MPa for Young’s modulus, 159.31 g for burst strength and 0.70 mm for distance to burst. The obtained films showed lower permeability values (3.40 × 10−12 g/m·s·Pa) than those of other polysaccharide-based films. The BC samples showed an outstanding antioxidant capacity (0.31–1.32 mg GAE/g dried film for total phenolic content, %DPPH• 57.24–78.00% and %ABTS•+ 89.49–86.94%) and excellent UV-barrier capacity with a transmittance range of 0.02–0.38%. Therefore, a new process for the production of BC films with antioxidant properties was successfully developed.

Bioconversion of Agroindustrial Asparagus Waste into Bacterial Cellulose by Komagataeibacter rhaeticus

“…Our findings align with the results from other residual sources like those of Nie et al [46], who obtained 2.1 g/L from Nelumbo nucifera Loto rhizome byproducts at 30 • C for 14 days under static conditions using Acetobacter pasteurianus MGC-N8819. Nevertheless, the findings contrast with those of Cazón et al [47], who achieved as much as 4.3 g/L of BC over 8 days at pH 3.7 and 30 • C, employing a bagasse-potato culture medium with Komagataeibacter xylinus.…”

A sustainable bioprocess to produce bacterial cellulose (BC) using waste streams from wine distilleries and the biodiesel industry: evaluation of BC for adsorption of phenolic compounds, dyes and metals

“…In another study, skins, pulp, seeds and stems contained in grape pomace combined with discharged potatoes (ratio of 50:50 w/w) were thermally treated using acid-assisted hydrolysis. The rich in sugar hydrolysate was suggested as efficient fermentation media to produce 4 g/L BC in 6 days [ 39 ].…”

Recent Advances in Miscanthus Macromolecule Conversion: A Brief Overview

“…Our literature search has failed to find other examples of BC production from miscanthus, but there are reports describing the processes for BC production from other plant resources [ 103 , 104 , 105 , 106 ]. Table 4 summarizes the results of the miscanthus conversion into BC, as well as examples of BC production from other plant and wood raw materials among which miscanthus holds a leading position.…”