Spent coffee grounds are wastes generated annually worldwide in significantly large amounts in the soluble coffee industry and in household and commercial beverage preparation. Although spent coffee grounds are rich in several classes of compounds, predominantly polysaccharides, profitable applications have not yet been effectively implemented for such wastes. Thus, it was the aim of this study to verify the feasibility of producing biopolymeric films from the polysaccharide-rich fraction of spent coffee grounds, obtained by alkaline hydrogen peroxide treatment of the coffee waste. Produced films were characterized for their physicochemical, barrier and mechanical properties and these properties were comparable to those of similar polysaccharides films from the literature.

中文翻译：

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废咖啡渣中富含多糖的部分可作为薄膜制造的有前途的生物材料。

用过的咖啡渣是全世界每年在可溶性咖啡行业以及家用和商用饮料制备中大量产生的废物。尽管用过的咖啡渣富含多种化合物（主要是多糖），但尚未有效地用于此类废物的盈利应用。因此，本研究的目的是验证用碱性过氧化氢处理咖啡废料获得的废咖啡渣中富含多糖的部分生产生物聚合物薄膜的可行性。所生产的薄膜的物理化学，阻隔性和机械性能得到了表征，这些性能可与文献中类似的多糖薄膜相媲美。