Decellularized Banana Leaves: Eco-Friendly Scaffolds for Cell-Based Seafood

Cellular agriculture, as an emerging food production system, holds potential to address sustainability, food security, and agricultural resilience. Within the cell-based meat supply chain, one of the key steps is scaffolding. In this study, we assessed decellularized banana leaves, various coating materials, and different cell seeding strategies to determine their effects on cell viability, cell growth, cell alignment, and the response of the materials to thermal processing. The efficiency of decellularization was verified through DNA quantification, which decreased from 445 ng/mg in fresh banana leaves to non-detectable levels in the decellularized samples. This was further confirmed by FTIR and PCA modeling. Cell viability exceeded 98% on uncoated, soy-coated, and gelatin-coated samples of the decellularized banana leaves. Alignment of cells on gelatin-coated samples was the highest among the samples, with a dominant orientation of 65.8{degrees}, compared to soy-coated and uncoated samples with dominant orientations of 9.2{degrees} and -6.3{degrees}, respectively. In terms of quality attributes, the kinetics of shrinkage indicated that coating with soy and the presence of cells increased the activation energy due to the higher energy required for protein denaturation. Moreover, the kinetics of area changes in plain scaffolds without cells followed a first-order pattern, while with seeded cells a second-order pattern was followed. In summary, decellularized banana leaves present a sustainable and suitable biomaterial to support cells towards future needs related to meat production.