Valorization of sage extracts (Salvia officinalis L.) obtained by high voltage electrical discharges: Process control and antioxidant properties

Nutrizio, Marinela; Gajdoš Kljusurić, Jasenka; Badanjak Sabolović, Marija; Bursać Kovačević, Danijela; Šupljika, Filip; Putnik, Predrag; Semenčić Čakić, Mojca; Dubrović, Igor; Vrsaljko, Domagoj; Maltar-Strmečki, Nadica; Režek Jambrak, Anet (2020) Valorization of sage extracts (Salvia officinalis L.) obtained by high voltage electrical discharges: Process control and antioxidant properties. Innovative Food Science & Emerging Technologies, 60 . ISSN 1466-8564

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Abstract

Study explored high voltage electrical discharge (HVED) for recovery of bioactive compounds from Dalmatian sage. HVED parameters were: treatment time (3, 9 min), ethanol content (0, 25, 50%, v/v), voltage for argon (15, 20 kV) and nitrogen (20, 25 kV). Findings were compared to conventional extraction (CE) with assessment of total phenolic content (TPC), antioxidant activity (EPR), NIR spectroscopy, colorimetric parameters, Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). Raw sage was analyzed for pesticide residues and heavy metals. The optimal HVED extraction expressed as TPC 57.21 mg GAE/g was obtained with nitrogen/9 min/25 kV/33% of ethanol. Sage is safe for extraction in terms of pesticide residues and heavy metals. HVED electroporation facilitated the extraction of bioactive compounds and produced extracts with high antioxidant potential, thus confirmed HVED as “green” extraction for sustainable functional food production.

Item Type:	Article
Uncontrolled Keywords:	High voltage electrical discharge ; Dalmatian sage ; Green chemistry ; Antioxidant activity ; Sustainability
Subjects:	NATURAL SCIENCES > Physics NATURAL SCIENCES > Chemistry BIOTECHNICAL SCIENCES > Food Technology
Divisions:	Division of Physical Chemistry
Projects:	Project title Project leader Project code Project type Ekstrakcije bioaktivnih spojeva iz mediteranskog bilja sa “zelenim otapalima” primjenom visokonaponskog pražnjenja Režek Jambrak, Anet IP-2016-06-1913 HRZZ
Depositing User:	Nadica Maltar Strmečki
Date Deposited:	08 Jun 2021 08:34
URI:	http://fulir.irb.hr/id/eprint/6441
DOI:	10.1016/j.ifset.2019.102284

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