Eco‐friendly composite materials have received more attention in recent years, and research has shown that biostructures have great potential as a solution to meet the needs of sustainability in product design and potential food packaging. In this study, the mechanical, thermal, morphological, water absorption properties and water vapor permeability of bio‐composites based on polyethylene and sour cherry shell powder (SCS) (0% –7.5%) have been investigated. It was observed that 2.5% of sour cherry shell increased elastic modulus and tensile strength and improved mechanical properties. Composites without adding sour cherry shell show 1.28% water absorption. Decreased water absorption was observed for treated composites containing 2.5% of sour cherry shell, and its amount was 1.26%. The presence of sour cherry shell increased the bio‐composite resistance to moisture absorption, but the addition had little effect on the thermal process properties of polyethylene. Vapor permeability in sour cherry shell / polyethylene bio‐composites, which was a significant difference between samples with sour cherry shells (2.5%–7.5%) and samples without sour cherry shells. Results indicated that polyethylene/sour cherry shell composites could be used to replace polyethylene in application such as stretch film, shrink film, and bags of fruit.

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Novel nanocomposites reinforced fibrous casing of sugarcane bagasse containing with nanocarbon and nanoclay (0.5 and 1% wt) were developed to evaluate the adsorption effects of 4 carcinogenic polyaromatic hydrocarbons [benzo­[a]­anthracene, chrysene, benzo­[b]­fluoranthene, and benzo­[a]­pyrene­(PAH 4)] during the smoking process of dried sausage. The mechanical, water vapor permeability (WVP), migration, film opacity, thermal properties, morphology, and the adsorption efficiency of produced films were assessed. It was observed that additions of nanocarbon and nanoclay to the film formulation led to significant improvement in tensile strength, elongation at break, maximum load stress, and elastic modulus values compared to control film. WVP in the nanocomposite was reduced by 40% along with the addition of nanoparticles. Film opacity, melting temperature, crystallization temperature, crystallinity degree, and glass transition temperature were remarkably increased. The migration levels of neat nanomaterials in ethanol and isooctane ranged from 45 to 107 mg kg–1. These improvements were more highlighted when nanoclay nanoparticles (1% wt) were used compared to nanocarbon. The nanoclay nanocomposite indicated uniform and well-distributed nanoparticles. Based on the GC–MS analysis, reinforced sugarcane bagasse fibrous casing with nanoclay particles efficiently adsorbed the PAH 4 compared to control and nanocarbon reinforced nanocomposite film.

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