期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 108, 期 -, 页码 61-68出版社
ELSEVIER
DOI: 10.1016/j.supflu.2015.10.025
关键词
Raspberry pomace; Supercritical fluid extraction; Pressurized liquid extraction; Process optimization; Antioxidant capacity
资金
- Research Council of Lithuania [SVE-01/2014]
Berry juice production residues are used inefficiently and in many cases are wasted, due to a lack of valorization of their processing methods. This study provides an example of biorefining of raspberry pomace by using high pressure extraction. Lipophilic fractions were isolated by pressurized liquid extraction (PLE) with hexane or supercritical carbon dioxide extraction (SFE-CO2), while the residues were re-extracted with polar solvents, methanol or ethanol. Optimal parameters were established by Central Composite Design and Response Surface Methodology. The yields of lipophilic and hydrophilic fractions were up to 15 and 25%, respectively. Antioxidant properties of extracts were evaluated by total phenolic content (TPC), trolox equivalent antioxidant capacity (TEAC) and oxygen radical absorbance capacity (ORAC). Polar fractions were remarkably stronger antioxidants, e.g. TPC of hexane and methanol extracts were 5.37-10.15 and 26.31-38.95 mg/g gallic acid equivalents, respectively. Raspberry pomace extracts may be promising ingredients for functional foods, nutraceuticals, cosmetics and other applications. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据