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Ben Othman K, Cherif MM, Assadi I, Elfalleh W, Khezami L, Ghorbal A, Assadi AA. Exploring Cold plasma technology: Enhancements in Carob seed germination, phytochemical Composition, and antioxidant activity. Heliyon 2024; 10:e28966. [PMID: 38638942 PMCID: PMC11024547 DOI: 10.1016/j.heliyon.2024.e28966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 04/20/2024] Open
Abstract
The cultivation of carob tree does not need many climatic and ecological requirements. The main limit to its large-scale cultivation is the defects for propagation with seeds. Addressing this, our study evaluated the effect of cold plasma pretreatment on carob seed germination. Impressively, cold plasma showcased beneficial effects by significantly increasing water uptake in seeds (CS: 1.71 ± 0.59; PS/3.99 ± 1.56) and decreasing the contact angle from 80.7° to 57.9°, enhancing the seed surface's hydrophilicity. While the germination rate enhancement was subtle, the treatment presented an innovative route to modifying the seed's physiochemical properties. Specifically, storage proteins like albumin, globulin, and prolamin were notably reduced (Albumin (from 7.67 to 4.95 mg/g DW), Globulin (from 8.52 to 5.80 mg/g DW) and Prolamin (from 3.53 to 1.66 mg/g DW)). Additionally, there was a decline in the overall content of polyphenols (from 846.88 to 760.94 mg GAE/100g DW) and flavonoids (from 790.93 to 502.95 mg GAE/100g DW) and a decrease in the ferric reducing power (from 34.48 to 26.39 mg AAE/g DW). However, radical scavenging activity remained consistent. Intriguingly, FTIR-ATR spectral analysis post plasma treatment indicated oxidative alterations in the seed coat, marked by a distinctive intensity at 1732 cm⁻1. This investigation suggests that the application of eco-friendly technology could provide improvements in seed surface's hydrophilicity, but appropriate conditions could be chosen to increase germination efficiency.
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Affiliation(s)
- Khadija Ben Othman
- Energy, Water, Environment and Process Laboratory, National Engineering School of Gabes, University of Gabes, Zrig, 6072, Gabes, Tunisia
| | - Mohamed Majdi Cherif
- Energy, Water, Environment and Process Laboratory, National Engineering School of Gabes, University of Gabes, Zrig, 6072, Gabes, Tunisia
| | - Imen Assadi
- Energy, Water, Environment and Process Laboratory, National Engineering School of Gabes, University of Gabes, Zrig, 6072, Gabes, Tunisia
| | - Walid Elfalleh
- Energy, Water, Environment and Process Laboratory, National Engineering School of Gabes, University of Gabes, Zrig, 6072, Gabes, Tunisia
- Research Unit Advanced Materials, Applied Mechanics, Innovative Processes and Environment, UR22ES04, Higher Institute of Applied Sciences and Technology of Gabes, University of Gabes, Gabes, 6072, Tunisia
| | - Lotfi Khezami
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623, Riyadh, Saudi Arabia
| | - Achraf Ghorbal
- Research Unit Advanced Materials, Applied Mechanics, Innovative Processes and Environment, UR22ES04, Higher Institute of Applied Sciences and Technology of Gabes, University of Gabes, Gabes, 6072, Tunisia
| | - Aymen Amine Assadi
- College of Engineering, Imam Mohammad Ibn Saud Islamic University, IMSIU, Riyadh, 11432, Saudi Arabia
- Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes, CNRS, ISCR—UMR 6226, 35000, Rennes, France
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Hamrouni H, Othman KB, Benmoussa H, Idoudi S, Najjaa H, Neffati M, Elfalleh W. Phenolic Profiling, Antioxidant, and Antibacterial Activities of Selected Medicinal Plants from Tunisia. Chem Biodivers 2023; 20:e202300265. [PMID: 37369625 DOI: 10.1002/cbdv.202300265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 06/29/2023]
Abstract
Phytochemical screening of aqueous extract from six medicinal wild plants grown in South-eastern of Tunisia: Atriplex halimus, Teucrium polium, Moricandia arvensis, Deverra tortuoa, Haplophyllum tuberculatum and Polygonum equisetiforme were evaluated. Both decoction and ultrasound assisted extraction were used. Antioxidant, antibacterial proprieties, and phenolic profiling, using LC-ESI-MS method, were assessed. Total polyphenols, flavonoids, and condensed tannins contents ranged from 7.47±0.19 to 22.25±0.49 mg GAE/g Dw, 5.47±0.06 to 7.55±0.07 mg RE/g Dw, and 0.33±0.02 to 19.43±0.64 mg TAE/g Dw, respectively. Moreover, the reducing power and DPPH tests showed that P. equisetiforme (EC50 : 12.50±0.50 μg/ml; DPPH⋅+ : 213.49±4.24 mg TEAC/g DW), T. polium (EC50 : 25.00±1.00 μg/ml; DPPH⋅+ : 181.39±9.47 mg TEAC/g DW) as well as H. tuberculatum (EC50 : 56.25±0.25 μg/ml; DPPH⋅+ : 177.83±5.85 mg TEAC/g DW) extracts were the most effective natural antioxidants. For anti-bacterial activity, the ultrasonic extract of H. tuberculatum showed the highest activity against both P. aeruginosa (13.50±0.71 mm) and S. aureus (13.00±0.00 mm) at 10 mg/ml. Furthermore 24 phenolic compounds were identified, with predominance of quinic acid, gallic acid, protocatechuic acid, syringic acid, p-coumaric acid, trans-ferulic acid, catechin (+), trans-cinnamic and silymarin. These results were further consolidated by to heatmap clustering with P. equisetiforme, H. tuberculatum, T. polium as the main antioxidant and antibacterial sources which supports their domestication and industrial use.
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Affiliation(s)
- Hania Hamrouni
- Energy, Water, Environment and Process Laboratory, LR18ES35), National Engineering School of Gabes, University of Gabes, Zrig Eddakhlania, 6072, Gabes, Tunisia
| | - Khadija Ben Othman
- Energy, Water, Environment and Process Laboratory, LR18ES35), National Engineering School of Gabes, University of Gabes, Zrig Eddakhlania, 6072, Gabes, Tunisia
- Research Unit Advanced Materials, Applied Mechanics, Innovative Processes and Environment, UR22ES04), Higher Institute of Applied Sciences and Technology of Gabes (ISSATG), University of Gabes, 6072, Gabes, Tunisia
| | - Hasnia Benmoussa
- Laboratory of Environmental Process Engineering, Faculty of Chemistry, BP1505, Oran-Mohamed Boudiaf University of Science and Technology, El M'naouer, 31000, Oran, Algeria
| | - Sourour Idoudi
- Energy, Water, Environment and Process Laboratory, LR18ES35), National Engineering School of Gabes, University of Gabes, Zrig Eddakhlania, 6072, Gabes, Tunisia
| | - Hanen Najjaa
- Laboratory of pastoral ecosystem and valorization of spontaneous plants and associated microorganisms, Institute of Arid Lands of Medenine, Route Eljorf, 4119 Medenine, University of Gabes, Tunisia
| | - Mohamed Neffati
- Laboratory of pastoral ecosystem and valorization of spontaneous plants and associated microorganisms, Institute of Arid Lands of Medenine, Route Eljorf, 4119 Medenine, University of Gabes, Tunisia
| | - Walid Elfalleh
- Energy, Water, Environment and Process Laboratory, LR18ES35), National Engineering School of Gabes, University of Gabes, Zrig Eddakhlania, 6072, Gabes, Tunisia
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Idoudi S, Othman KB, Bouajila J, Tourrette A, Romdhane M, Elfalleh W. Influence of Extraction Techniques and Solvents on the Antioxidant and Biological Potential of Different Parts of Scorzonera undulata. Life (Basel) 2023; 13:life13040904. [PMID: 37109433 PMCID: PMC10140856 DOI: 10.3390/life13040904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023] Open
Abstract
The genus Scorzonera has various medicinal values. Species belonging to this genus were traditionally used as drugs or in food. The current study aimed to determine the phytochemical composition, antioxidant activity, and biological properties of the tuber, leaf, and flower of Scorzonera undulata extracts, collected from the southwest of Tunisia. Phenolic compounds from the three parts were extracted using two solvents (water and ethanol) and two extraction techniques (maceration and ultrasound). The total phenolic content was measured by the Folin–Ciocalteu assay. Furthermore, the chemical composition of Scorzonera undulata extract was also investigated by the LC-ESI–MS method using phenolic acid and flavonoid standards. The variation of the extraction methods induced a variation in the real potentialities of the three parts in terms of bioactive molecules. However, the aerial part of S. undulata (leaves and flowers) showed, in general, the highest phenolic contents. Twenty-five volatile compounds have been detected by GC-MS in S. undulata extracts; among them, fourteen were identified before derivatization. The DPPH test showed that the aerial part of the plant has a higher antioxidant activity compared to the tuber (25.06% at 50 µg/mL for the leaf ethanolic extract obtained by ultrasound extraction). For most biological activities (anti-Xanthine, anti-inflammatory, and antidiabetic (alpha-amylase and alpha-glucosidase)), the aerial parts (flowers and leaves) of the plant showed the highest inhibition than tubers.
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