期刊
MOLECULES
卷 25, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/molecules25071739
关键词
vine-canes; ultrasound-assisted extraction; pilot scale; polyphenols; antioxidant activity; HPLC-PDA analysis
资金
- FCT/MCTES through national funds [UIDB/50006/2020]
- FEDER Funds through the Operational Competitiveness Factors Program-COMPETE
- National Funds through FCT [PTDC/BII-BIO/30884/2017-POCI-01-0145-FEDER-030884]
Wine production generates large amounts of vine-canes, a devalued by-product that could be used for the recovery of bioactive compounds. In this work, two vine-canes varieties, namely Touriga Nacional (TN) and Tinta Roriz (TR), were submitted to different ultrasound-assisted extraction (UAE) conditions. The highest phenolic and flavonoid content was observed for TR extract obtained at lab-scale without an ice bath and pilot-scale after 60 min of extraction (32.6 +/- 2.1 and 26.0 +/- 1.5 mg gallic acid equivalent/g dry weight (dw) and 9.5 +/- 0.6 and 8.3 +/- 0.8 mg epicatechin equivalents/g dw, respectively). Further, all extracts demonstrated a high antioxidant activity to scavenge DPPH free radicals with the best value reached by TR at the lab-scale without an ice bath after 30 min and pilot-scale extraction after 60 min (34.2 +/- 2.4 and 33.4 +/- 2.1 mg trolox equivalents/g dw, respectively). Extracts phenolic composition were also evaluated by HPLC, demonstrating that resveratrol, myricetin and catechin were the main compounds. According to our knowledge, this is the first time that a pilot scale of UAE of phenolic compounds from vine-canes was performed. This paper represents an important step to the use of UAE as an industrial process to recover bioactive compounds.
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