文章基本信息

标题：Bioactive Compounds from Norway Spruce Bark: Comparison Among Sustainable Extraction Techniques for Potential Food Applications
本地全文：下载
作者：Sara Spinelli ; Cristina Costa ; Amalia Conte 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2019
卷号：8
期号：11
页码：524-532
DOI：10.3390/foods8110524
出版社：MDPI Publishing
摘要：Picea abies (L.) Karst, (Norway spruce) bark, generally considered as wood industry waste, could potentially be used as a valuable source of antioxidants for food applications. In this study, supercritical fluid extraction (SFE), pressurized liquid extraction (PLE), and ultrasound-assisted extraction (UAE) were carried out in order to recover bioactive compounds from bark of Norway spruce. Obtained results show that PLE with ethanol as solvent was the most effective method for extracting total flavonoid compounds (21.14 ± 1.42 mg quercetin g−1 sample) and consequently exerted the highest antioxidant activity measured by 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (257.11 ± 13.31 mg Trolox g−1 sample). On the other hand, UAE extract contained the maximum phenolic concentration (54.97 ± 2.00 mg gallic acid g−1 sample) and the most interesting antioxidant activity measured by the ferric-reducing antioxidant power (580.25 ± 25.18 µmol FeSO4 g−1 sample). Additionally, PLE and UAE have demonstrated great efficiency in the extraction of trans-resveratrol, quantified by HPLC (0.19 and 0.29 mg trans-RSV g−1 sample, respectively).
关键词：supercritical fluid extraction; pressurized liquid extraction; ultrasound-assisted extraction; trans -resveratrol; Norway spruce bark supercritical fluid extraction ; pressurized liquid extraction ; ultrasound-assisted extraction ; trans -resveratrol ; Norway spruce bark