Sustainable leather making — An amphoteric organic chrome-free tanning agents based on recycling waste leather

β-Cyclodextrin-Based Chrome-Free Tanning Agent Results in the Sustainable and Cleaner Production of Eco-Leather

“…The Ci7800 colorimeter, manufactured by X-Rite in the United States, was employed to record the changes in the color parameters L , a , and b values of the tanned leather after 0, 6, 24, 48, and 72 h of irradiation, respectively. For each sample, the determination was repeated 5 times at each time, and the average value was recorded . The total chromatic difference (Δ E ) can be calculated using the following formula: normalΔ E = false( normalΔ a false) 2 + false( normalΔ b false) 2 + false( normalΔ L false) 2 where Δ E is the total chromatic difference; Δ L is the change of brightness; Δ a is the change value between red and green; and Δ b is the change value between yellow and blue.…”

A review of the green chemistry approaches to leather tanning in imparting sustainable leather manufacturing

“…176 Recently chrome-tanned leather waste was also studied as a possible tanning agent. 181 In this method, collagen polypeptide was extracted from chrome-tanned leather waste by enzymatic treatment with industrial trypsin and then it was modified with ethylene glycol diglycidyl ether. The modified collagen peptide (CP–EDGE) was studied for the tanning of pickling-free and salt-free tanning of leather.…”

A supramolecular approach for converting renewable biomass into functional materials

“…22,23 Because of the great importance of biomass, humans have never stopped pursuing and exploring new processing modes of biomass. 24–26…”