| Title | Microwave-Assisted Extraction of Bioactive Compounds from Lentil Wastes: Antioxidant Activity Evaluation and Metabolomic Characterization |
|---|---|
| ID_Doc | 22222 |
| Authors | Cavalluzzi, MM; Lamonaca, A; Rotondo, NP; Miniero, DV; Muraglia, M; Gabriele, P; Corbo, F; De Palma, A; Budriesi, R; De Angelis, E; Monaci, L; Lentini, G |
| Title | Microwave-Assisted Extraction of Bioactive Compounds from Lentil Wastes: Antioxidant Activity Evaluation and Metabolomic Characterization |
| Year | 2022 |
| Published | Molecules, 27.0, 21 |
| Abstract | The recovery of industrial by-products is part of the zero-waste circular economy. Lentil seed coats are generally considered to be a waste by-product. However, this low-value by-product is rich in bioactive compounds and may be considered an eco-friendly source of health-promoting phytochemicals. For the first time, a sustainable microwave-assisted extraction technique was applied, and a solvent screening was carried out to enhance the bioactive compound content and the antioxidant activity of green and red lentil hull extracts. With respect to green lentil hull extracts that were obtained with different solvents, the aqueous extract of the red lentil seed coats showed the highest total phenolic and total flavonoid content (TPC = 28.3 +/- 0.1 mg GAE/g dry weight, TFC = 1.89 +/- 0.01 mg CE/100 mg dry weight, respectively), as well as the highest antioxidant activity, both in terms of the free radical scavenging activity (ABTS, 39.06 +/- 0.73 mg TE/g dry weight; DPPH, IC50 = 0.39 mu g/mL) and the protection of the neuroblastoma cell line (SH-SY5Y, IC50 = 10.1 +/- 0.6 mu g/mL), the latter of which has never been investigated so far. Furthermore, a metabolite discovery analysis was for the first time performed on the aqueous extracts of both cultivars using an HPLC separation which was coupled with an Orbitrap-based high-Resolution Mass Spectrometry technique. |
| https://www.mdpi.com/1420-3049/27/21/7471/pdf?version=1667441209 |
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