This study aimed to enhance the properties of films produced from corn starch and gelatin recovered from chrome (III) tanned leather waste (CTLW) through the addition of transglutaminase enzyme (TGase) and phenolic extracts from Spirulina platensis (PESP). Mechanical, chemical, physical, and biological properties were analyzed and compared with control films elaborated in the same conditions but with commercial gelatin (COM). The possibility of applying the film as soil cover was analyzed through its degradation when exposed to the surface of a garden soil for a period of 60 days. The TGase caused a reduction of 50% in solubility in water, and 2% in the water vapor permeability (PWV), and PESP caused a reduction of 17% in solubility and 15% in PWV. The combined effect of TGase and PESP was a 60% reduction in solubility, 75% reduction in PWV, inhibition of contamination by Aspergillus niger, and reduction of film degradation on soil covering, evidenced by stability analysis using Fourier transform infrared (FTIR) spectrometry. The combined effect of TGase with PESP led to an improvement in the characteristics of the film produced with CTLW gelatin, rendering its application possible due to a higher lifespan, contributing to environmental sustainability and diminishing leather waste disposal at landfills. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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转谷氨酰胺酶和钝顶螺旋藻酚类提取物在基于铬 III 鞣制皮革废料中回收的淀粉和明胶薄膜中的综合作用

本研究旨在通过添加转谷氨酰胺酶 (TGase) 和钝顶螺旋藻的酚类提取物，提高从铬 (III) 鞣制皮革废料 (CTLW) 中回收的玉米淀粉和明胶生产的薄膜的性能(PESP)。对机械、化学、物理和生物特性进行了分析，并与在相同条件下但使用商业明胶 (COM) 制作的对照薄膜进行了比较。通过将薄膜暴露于花园土壤表面 60 天时的降解情况来分析将薄膜用作土壤覆盖物的可能性。TGase 导致水中溶解度降低 50%，水蒸气渗透率 (PWV) 降低 2%，而 PESP 导致溶解度降低 17%，PWV 降低 15%。TGase 和 PESP 的联合作用是溶解度降低 60%，PWV 降低 75%，抑制黑曲霉污染，并减少了土壤覆盖物上的薄膜降解，这可以通过使用傅里叶变换红外 (FTIR) 光谱法的稳定性分析来证明。TGase 与 PESP 的联合作用改善了用 CTLW 明胶生产的薄膜的特性，由于使用寿命更长，使其应用​​成为可能，有助于环境可持续性并减少垃圾填埋场的皮革废物处理。© 2021 化学工业协会和 John Wiley & Sons, Ltd