从智利酒果（Aristotelia chilensis [Mol.] Stuntz）叶片中多响应优化热压液体回收可提取多酚
Multi-response optimal hot pressurized liquid recovery of extractable polyphenols from leaves of maqui (Aristotelia chilensis [Mol.] Stuntz).
作者信息
Rivera-Tovar Pamela Raquel, Torres María Dolores, Camilo Conrado, Mariotti-Celis María Salomé, Domínguez Herminia, Pérez-Correa José Ricardo
机构信息
Chemical and Bioprocess Engineering Department, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, Santiago 7820436, Chile.
CINBIO, Department of Chemical Engineering, Faculty of Sciences, University of Vigo, Edificio Politécnico, As Lagoas s/n, 32004 Ourense, Spain.
出版信息
Food Chem. 2021 Mar 29;357:129729. doi: 10.1016/j.foodchem.2021.129729.
Multi-response optimization of hot pressurized liquid extraction (HPLE) was applied for the first time to obtain maqui (Aristotelia chilensis [Mol.] Stuntz) leaf extracts. The total polyphenol content (TPC), the antioxidant capacity (AC) as well as the total polyphenol purity of the maqui leaf extracts were accurately predicted (RSD < 8%) at the evaluated extraction scales. The optimum HPLE conditions that prioritized TPC and AC equally (OPT1) recovered ~3 times more TPC (205.14 mg GAE/g leaves) than maqui leaf extracts obtained by maceration, while the extract that prioritized purity over TPC and AC presented the highest purity (36.29%) and an EC ~3 times lower than currently reported values. It was found by multi-response optimization that maqui leaves and HPLE are among the best natural sources and extraction techniques, respectively, to recover protocatechuic acid, quercetin, and catechin.
热压液体萃取（HPLE）的多响应优化首次应用于获得智利酒果（Aristotelia chilensis [Mol.] Stuntz）叶提取物。在评估的萃取规模下，准确预测了智利酒果叶提取物的总多酚含量（TPC）、抗氧化能力（AC）以及总多酚纯度（相对标准偏差<8%）。同等优先考虑TPC和AC的最佳HPLE条件（OPT1）回收的TPC（205.14 mg没食子酸当量/g叶）比浸渍法获得的智利酒果叶提取物多约3倍，而优先考虑纯度而非TPC和AC的提取物具有最高纯度（36.29%），其儿茶素当量比目前报道的值低约3倍。通过多响应优化发现，智利酒果叶和HPLE分别是回收原儿茶酸、槲皮素和儿茶素的最佳天然来源和萃取技术之一。
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