Oral
Abstract
Research summary supplied by the authors
In the context of climate imperatives and the transition from fossil-based inputs, the Trumpler Group has developed an advanced biotechnological platform for valorizing chrome-tanned leather waste. Through controlled enzymatic hydrolysis followed by nanofiltration, hydrolyzed collagen peptides of high purity and functional integrity are recovered, achieving up to 90% protein yield from chrome shavings. This biopolymer serves dual applications: as a bio-based retanning agent replacing petrochemical derivatives, and as a bioestimulant in agriculture. In the latter, collagen-derived peptides function as signaling molecules, modulating plant metabolic pathways and enhancing tolerance to abiotic stressors such as drought and salinity. Additionally, they contribute to soil health by promoting beneficial microbial activity and improving soil structure. Compared to conventional acid or alkaline hydrolysis, the enzymatic process operates under milder conditions, minimizes secondary pollutants, and offers substrate specificity, yielding peptides with preserved bioactivity. Nanofiltration further concentrates low-molecular-weight peptides, enhancing their efficacy and broadening application potential. The process is integrated within a low-carbon infrastructure utilizing photovoltaic solar arrays and biomass-based thermal energy, significantly reducing Scope 1 and 2 emissions. A closed-loop water management system enables internal recycling of process water, eliminating effluent discharge and aligning with zero-liquid-discharge (ZLD) principles. This model exemplifies circular economy and industrial symbiosis, converting hazardous solid waste into high value biochemicals. Life Cycle Assessment (LCA) confirms the environmental and economic viability of the process, demonstrating how precision biotechnology and green engineering can drive sustainable transformation in traditionally resource-intensive industries.