According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Systematic review and meta-analysis of single-molecule force spectroscopy studies
A meta-analysis pooling all published single-molecule force spectroscopy data measuring the stretching energy (in kJ/mol) of hyaluronic acid, Curdlan, and chitin in aqueous environments under identical temperature, pH, and strain rate conditions. Controlled in vitro mechanical stretching experiment with direct comparison
A controlled laboratory experiment directly measuring and comparing the stretching energy of hyaluronic acid, Curdlan, and chitin under identical physical conditions using the same instrument and protocol. Prospective in vitro polymer mechanical characterization cohort
A prospective study that systematically characterizes the mechanical resistance of each polymer under standardized tension conditions to validate the reported energy values. Retrospective comparison of published stretching energy values
A retrospective analysis comparing previously published stretching energy values for the three polymers to determine if the reported differences (8.45 vs. 3.45 vs. 2.23 kJ/mol) are consistently observed. Single-lab replication study with blinded measurements
A replication study conducted by a blinded team to verify the exact energy values reported for each polymer under identical conditions.