超声辅助提取蘑菇副产物中的麦角固醇和抗氧化成分，并获得富含β-葡聚糖的残渣。
Ultrasound-assisted extraction of ergosterol and antioxidant components from mushroom by-products and the attainment of a β-glucan rich residue.
机构信息
Department of Chemistry, University of the Balearic Islands, Ctra. Valldemossa, km. 7.5, 07122 Palma de Mallorca, Spain.
Institute of Research and Formation Agricultural and Fishing (IRFAP), of the Government of the Balearic Islands, C/ Eusebi Estada, 145, 07009 Palma, Spain.
出版信息
Food Chem. 2020 Dec 1;332:127390. doi: 10.1016/j.foodchem.2020.127390. Epub 2020 Jun 24.
Revalorization of mushroom by-product (stalks of A. bisporus) by extracting its components is proposed. The extraction kinetics at 25 °C of ergosterol, phenolic compounds and antioxidant activity by mechanical agitation (at 130 rpm) and ultrasound assistance (at 182 and 321 W/L) in 70 and 96% v/v ethanol/water solutions during 30 min were evaluated and satisfactorily modelled, using the Weibull model (mean relative error ≤ 7.8%). The effect of the ethanol concentration was high in the ergosterol extraction yield (2 times higher yields in 96% than in 70%) but slight in those of phenolic compounds and antioxidant activity. Ultrasound assistance promoted considerable yield increases (up to 2 times higher in ergosterol, 46% in phenolic compounds and 25% in antioxidant activity) depending on the ethanol concentration and ultrasound power density. The residues after extraction were characterized and constituted a potential source of high value polysaccharides as β-glucans (average 12.2 ± 1.7g/100 g dm).
建议通过提取蘑菇副产物（双孢蘑菇菌柄）的成分来实现其增值。在 25°C 下，使用机械搅拌（130rpm）和超声辅助（182 和 321W/L），在 70%和 96%v/v 乙醇/水溶液中分别提取 30min 时，评估了麦角甾醇、酚类化合物和抗氧化活性的提取动力学，并使用 Weibull 模型（平均相对误差≤7.8%）对其进行了合理建模。乙醇浓度对麦角甾醇提取产率的影响较大（96%乙醇的产率比 70%乙醇高 2 倍），但对酚类化合物和抗氧化活性的影响较小。超声辅助作用可根据乙醇浓度和超声功率密度显著提高提取产率（麦角甾醇提高 2 倍，酚类化合物提高 46%，抗氧化活性提高 25%）。提取后的残渣进行了表征，构成了高附加值多糖（如β-葡聚糖）的潜在来源，平均含量为 12.2±1.7g/100g dm。
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