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首页> 外文期刊>BioTechnology: An Indian Journal >Recovery of phenolic antioxidants from the peel fraction of bilberry (Vaccinium myrtillus L.) processing waste
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Recovery of phenolic antioxidants from the peel fraction of bilberry (Vaccinium myrtillus L.) processing waste

机译：从越桔加工中的果皮部分中回收酚类抗氧化剂

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The extraction of phenolic compounds from the peel fraction of bilberry processing waste was investigated. The phenolic content of bilberry peels was 25.3 ± 2.4 mg GAE per gram dry weight and the flavonoid content was 2.85 ± 0.42 mg QE per gram dry weight. Extraction experiments were carried out in batch mode, using ethanol????water mixtures as solvent. A central composite design was used to study the effects of liquid-to-solid ratio (R = 20????40 mL g????1), aqueous ethanol concentration (C= 30????70 vol%), extraction time (E = 90????210 min) and temperature (T = 30????50 °C) on the recovery of phenolic compounds. Under the best conditions (R = 40 mL g????1, C = 70%, E = 210min and T = 50 °C) over 95% of the phenolics present in the waste were recovered. R, C and T were the most influential factors and all had a positive effect on the extraction efficiency. Based on the statistical analysis of the data, a simplified model was developed which provided an accurate estimation of the extraction yields both inside and outside the design space. Overall, the results of this study strongly support the potential of bilberry processing waste as a source of natural antioxidants and give useful directions on how to improve recovery by proper selection of extraction conditions.
机译：研究了从越橘加工废料果皮中提取酚类化合物的方法。越桔果皮的酚含量为每克干重25.3±2.4 mg GAE，黄酮含量为每克干重2.85±0.42 mg QE。以乙醇-水混合物为溶剂，以分批方式进行萃取实验。采用中心复合设计研究液固比（R = 20×40 mL g×1），乙醇水溶液浓度（C = 30×70 vol％）的影响。 ，回收时间（E = 90〜210分钟）和温度（T ＝ 30〜50℃）对酚类化合物的回收率。在最佳条件下（R = 40 mL g-1，C = 70％，E = 210min，T = 50℃），回收了废物中存在的95％的酚类。 R，C和T是影响最大的因素，均对提取效率产生积极影响。基于对数据的统计分析，开发了一个简化的模型，该模型可对设计空间内部和外部的提取率进行准确估算。总体而言，这一研究结果强烈支持的越桔加工废弃物作为天然抗氧化剂的来源的潜力，并就如何改善的提取条件选择适当的恢复有益的指导。

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