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- Title
Influence of enzyme-aided extraction and ultrasonication on phenolics content and antioxidant activity of Paeonia officinalis L. petals.
- Authors
OANCEA, SIMONA; PERJU, MIRABELA; OLOSUTEAN, HOREA
- Abstract
Peony is a less utilized herbaceous plant of ornamental and medicinal relevance. Petals are rich in bioactive phenolics, so the development of efficient extraction is required for maximum recovery and bioactivity. In this study, optimal conditions of ultrasound-assisted extraction of peony phenolics were first investigated by comparing to conventional extraction and testing the data fit by mathematical models (linear, two factor interactions, quadratic) followed by investigation of cellulase pre-treatment combined with ultrasonication. High amounts of flavonoids, phenolics and tannins were extracted for 30 min under ultrasound conditions of 150 W, 40 kHz, 50% amplitude, in 70% ethanol with 50/1 solvent/solid ratio. A further cellulase pre-treatment at 40 oC for different incubation times combined with ultrasonication facilitated the extraction of anthocyanins (720.48 mg / 100 g DW), phenolics (3985.50 mg / 100 g DW), flavonoids (2369.28 mg / 100 g DW) and tannins (8917.81 mg / 100 g DW). Good antioxidant activities by FRAP (350.03 mg ascorbic acid / 100 g DW) and DPPH (inhibition values >80%) were registered showing great potential for developing high-value bioingredients. The FTIR analysis revealed the presence of characteristic functional groups. The hereby combined extraction methods could be extended to other peony species.
- Subjects
SONICATION; ORNAMENTAL plants; PLANT phenols; ANTHOCYANINS; MEDICINAL plants; HERBACEOUS plants; VITAMIN C
- Publication
Journal of the Serbian Chemical Society, 2020, Issue 0, p1
- ISSN
0352-5139
- Publication type
Article
- DOI
10.2298/JSC190807120O