Polyphenols from Olea europaea L. cv. Caiazzana leaf pruning waste for antioxidant and UV-blocking starch-based plastic films

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY Food Packaging and Shelf Life Pub Date : 2025-01-01 Epub Date: 2025-01-26 DOI:10.1016/j.fpsl.2025.101447

Hamid Mushtaq , Simona Piccolella , Giovanna Cimmino , Elvira Ferrara , Nabila Brahmi-Chendouh , Milena Petriccione , Severina Pacifico

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Abstract

Olive tree waste products, such as leaves, can be used to formulate antioxidant additive mixtures for bioactive and functional packaging. In this context, with the aim of better enhancing the flavonoid component, the extract obtained by ultrasonic accelerated maceration was fractionated to obtain the OlP fraction, characterized by UltraViolet-Visible (UV-Vis) and Attenuated Total Reflectance Fourier Transform InfraRed (ATR FT-IR) spectroscopic techniques and chromatographic analysis coupled to high-resolution tandem mass spectrometry. The extract, consisting of 60.4 % flavonoids, exhibited a marked antiradical capacity but did not exert cytotoxic effects. The incorporation, at two different percentage levels, in a starch-based film, already with the plasticizers glycerol and sorbitol, was previously characterized chemically by ATR FT-IR tools, morphologically by Scanning Electron Microscopy (SEM), for the thermal behaviour and physical-chemical properties of thickness, density, water vapor transmission rate, moisture absorption, and colour. The data obtained, including the assessment of the UV-blocking, photoprotective, and antiradical activities, emphasize that the composition of the film was maintained, with OlP preserving its antioxidant efficacy while also acting more effectively as a moisture absorber and natural plasticizer.

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油橄榄中的多酚类物质。红花叶修剪废弃物制备抗氧化和防紫外线淀粉基塑料薄膜

橄榄树废弃物，如树叶，可用于配制抗氧化添加剂混合物，用于生物活性和功能性包装。在此背景下，为了更好地增强黄酮类成分，对超声加速浸渍得到的提取物进行分馏法得到OlP部分，采用紫外可见（UV-Vis）和衰减全反射傅里叶变换红外（ATR FT-IR）光谱技术和色谱分析耦合高分辨率串联质谱法进行表征。黄酮类化合物含量为60.4 %，具有明显的抗自由基能力，但不具有细胞毒作用。在淀粉基薄膜中掺入两种不同百分比的增塑剂甘油和山梨醇，之前通过ATR FT-IR工具进行化学表征，通过扫描电子显微镜（SEM）进行形态学表征，以确定热行为和厚度、密度、水蒸气透过率、吸湿性和颜色的物理化学性质。获得的数据，包括对紫外线阻挡、光防护和抗自由基活性的评估，强调了薄膜的组成保持不变，OlP保留了其抗氧化功效，同时也更有效地作为吸湿剂和天然增塑剂。

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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.