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Bouali A, Spissu Y, Barberis A, Fadda A, Azara E, Orrù G, Scano A, Palmieri G, D’hallewin G, Ouarda HEF. Phytochemical evaluation and exploration of some biological activities of aqueous and ethanolic extracts of two species of the genus Plantago L. PLoS One 2024; 19:e0298518. [PMID: 38421979 PMCID: PMC10903836 DOI: 10.1371/journal.pone.0298518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/26/2024] [Indexed: 03/02/2024] Open
Abstract
Plantago major L. and Plantago lagopus L. are cosmopolitan species, belonging to the Plantaginaceae family, used in traditional and modern medicine. In this study, a phytochemical evaluation of different aqueous and ethanolic extracts of leaves and roots of both species from the region of Beja in Tunisia was performed. Some biological activities, including antioxidant, anticancer and antibacterial were also done. LC-MS qualitative analysis revealed that the aqueous extracts of the roots of P. lagopus were richer in polyphenols, mainly flavonoids (Luteoline 7-rutinoside, Luteoline 7-rhamnoside) and hydroxycinnamic acids including caffeic acid, than the hydro-ethanolic extracts. Additionally, we identified for the first time the presence of salicylic acid in the hot aqueous extracts of roots of P. lagopus and its absence in the roots of P. major. The antioxidant activity of the extracts was assessed using cyclic voltammetry (CV), revealing that the voltammograms of leaf and root extracts from P. lagopus exhibited a higher antioxidant capacity compared to those of P. major. Antiproliferative activity, was determined against two-colon cancer cell lines, demonstrated that only the 12 h treatments with P. lagopus leaf and root aqueous and hydro-ethanolic extracts at low concentration were able to significantly reduce the colon carcinoma coli-2 (CaCo-2) cells proliferation. The antibacterial /antibiofilm activity was performed on yeast, Gram- negative and +positive bacterial strains. We demonstrated for the first time that ethanolic extracts of leaves and roots of P. lagopus have an inhibitory activity against Escherichia coli and Klebsiella pneumonia at MIC = 2 μg/mL for leaves and 4 μg/mL for roots.
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Affiliation(s)
- Anouar Bouali
- Laboratory of Plant Toxicology and Environmental Microbiology, Department of Life Sciences, Faculty of Sciences of Bizerte, University of Carthage, Carthage, Tunisia
| | - Ylenia Spissu
- Institute of Sciences of Food Production, National Research Council, Sassari, Italy
| | - Antonio Barberis
- Institute of Sciences of Food Production, National Research Council, Sassari, Italy
| | - Angela Fadda
- Institute of Sciences of Food Production, National Research Council, Sassari, Italy
| | - Emanuela Azara
- Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - Germano Orrù
- Institute of Sciences of Food Production, National Research Council, Sassari, Italy
- Department of Surgical Sciences, Molecular Biology Department, University of Cagliari, Cagliari, Italy
| | - Alessandra Scano
- Department of Surgical Sciences, Molecular Biology Department, University of Cagliari, Cagliari, Italy
| | - Giuseppe Palmieri
- Institute for Genetic and Biomedical Research, National Research Council, Sassari, Italy
| | - Guy D’hallewin
- Institute of Sciences of Food Production, National Research Council, Sassari, Italy
| | - Héla El Ferchichi Ouarda
- Laboratory of Plant Toxicology and Environmental Microbiology, Department of Life Sciences, Faculty of Sciences of Bizerte, University of Carthage, Carthage, Tunisia
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Petchidurai G, Sahayaraj K, Al-Shuraym LA, Albogami BZ, Sayed SM. Insecticidal Activity of Tannins from Selected Brown Macroalgae against the Cotton Leafhopper Amrasca devastans. PLANTS (BASEL, SWITZERLAND) 2023; 12:3188. [PMID: 37765352 PMCID: PMC10537709 DOI: 10.3390/plants12183188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023]
Abstract
Seaweeds, also known as marine macroalgae, are renewable biological resources that are found worldwide and possess a wide variety of secondary metabolites, including tannins. Drifted brown seaweed (DBSW) is particularly rich in tannins and is regarded as biological trash. The cotton leaf hopper Amrasca devastans (Distant) has caused both quantitative and qualitative losses in cotton production. Drifted brown seaweeds (DBSWs) were used in this study to extract, qualitatively profile, and quantify the levels of total tannins, condensed tannins, hydrolyzable tannins, and phlorotannins in the seaweeds; test their insecticidal activity; and determine the mechanism of action. The largest amount of tannin extract was found in Sargassum wightii Greville (20.62%) using the Soxhlet method (SM). Significantly higher amounts of hydrolyzable tannins (p = 0.005), soluble phlorotannins (p = 0.005), total tannins in the SM (p = 0.003), and total tannins in the cold percolation method (p = 0.005) were recorded in S. wightii. However, high levels of condensed tannins (CTAs) were observed in Turbinaria ornata (Turner) J. Agardh (p = 0.004). A. devastans nymphs and adults were examined for oral toxicity (OT) and contact toxicity (CT) against DBSW tannin crude extract and column chromatographic fractions 1 (Rf = 0.86) and 2 (Rf = 0.88). Stoechospermum polypodioides (J.V. Lamouroux) J. Agardh crude tannin was highly effective against A. devastans using the OT method (LC50, 0.044%) when compared with the standard gallic acid (LC50, 0.044%) and tannic acid (LC50, 0.122%). Similarly, S. wightii fraction 2 (LC50, 0.007%) showed a greater insecticidal effect against A. devastans adults in OT than gallic acid (LC50, 0.034%) and tannic acid (LC50, 0.022%). The mechanism of action results show that A. devastans adults treated with crude tannin of T. ornata had significantly decreased amylase, protease (p = 0.005), and invertase (p = 0.003) levels when compared with the detoxification enzymes. The levels of glycosidase, lactate dehydrogenase, esterase, lipase, invertase, and acid phosphate activities (p = 0.005) of S. wightii were reduced when compared with those of the Vijayneem and chemical pesticide Monocrotophos. In adult insects treated with LC50 concentrations of S. wightii tannin fraction 1, the total body protein (9.00 µg/µL) was significantly reduced (OT, LC50-0.019%). The SDS-PAGE analysis results also show that S. wightii tannin fraction 1 (OT and CT), fraction 2 (OT), and S. polypodioides fraction 2 (CT) had a significant effect on the total body portion level, appearance, and disappearance of some proteins and polypeptides. This study shows that the selected brown macroalgae can be utilized for the safer management of cotton leaf hoppers.
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Affiliation(s)
- Ganeshan Petchidurai
- Crop Protection Research Centre (CPRC), Department of Zoology, St. Xavier’s College (Autonomous), Palayamkottai, Tirnelveli 627002, Tamil Nadu, India;
| | - Kitherian Sahayaraj
- Crop Protection Research Centre (CPRC), Department of Zoology, St. Xavier’s College (Autonomous), Palayamkottai, Tirnelveli 627002, Tamil Nadu, India;
| | - Laila A. Al-Shuraym
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Bader Z. Albogami
- Department of Biology, Faculty of Arts and Sciences, Najran University, Najran P.O. Box 1988, Saudi Arabia;
| | - Samy M. Sayed
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza 12613, Egypt;
- Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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Geana EI, Ciucure CT, Tamaian R, Marinas IC, Gaboreanu DM, Stan M, Chitescu CL. Antioxidant and Wound Healing Bioactive Potential of Extracts Obtained from Bark and Needles of Softwood Species. Antioxidants (Basel) 2023; 12:1383. [PMID: 37507922 PMCID: PMC10376860 DOI: 10.3390/antiox12071383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Interest in the extraction of phytochemical bioactive compounds, especially polyphenols from biomass, has recently increased due to their valuable biological potential as natural sources of antioxidants, which could be used in a wide range of applications, from foods and pharmaceuticals to green polymers and bio-based materials. The present research study aimed to provide a comprehensive chemical characterization of the phytochemical composition of forest biomass (bark and needles) of softwood species (Picea abies L., H. Karst., and Abies alba Mill.) and to investigate their in vitro antioxidant and antimicrobial activities to assess their potential in treating and healing infected chronic wounds. The DPPH radical-scavenging method and P-LD were used for a mechanistic explanation of the biomolecular effects of the investigated bioactive compounds. (+)-Catechin, epicatechin, rutin, myricetin, 4 hydroxybenzoic and p-cumaric acids, kaempherol, and apigenin were the main quantified polyphenols in coniferous biomass (in quantities around 100 µg/g). Also, numerous phenolic acids, flavonoids, stilbenes, terpenes, lignans, secoiridoids, and indanes with antioxidant, antimicrobial, anti-inflammatory, antihemolytic, and anti-carcinogenic potential were identified. The Abies alba needle extract was more toxic to microbial strains than the eukaryotic cells that provide its active wound healing principles. In this context, developing industrial upscaling strategies is imperative for the long-term success of biorefineries and incorporating them as part of a circular bio-economy.
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Affiliation(s)
- Elisabeta-Irina Geana
- National Research and Development Institute for Cryogenics and Isotopic Technologies, 240050 Ramnicu Valcea, Romania;
| | - Corina Teodora Ciucure
- National Research and Development Institute for Cryogenics and Isotopic Technologies, 240050 Ramnicu Valcea, Romania;
| | - Radu Tamaian
- National Research and Development Institute for Cryogenics and Isotopic Technologies, 240050 Ramnicu Valcea, Romania;
| | - Ioana Cristina Marinas
- Department of Microbiology and Biochemistry, Research Institute of the University of Bucharest-ICUB, 050567 Bucharest, Romania; (D.M.G.); (M.S.)
| | - Diana Mădălina Gaboreanu
- Department of Microbiology and Biochemistry, Research Institute of the University of Bucharest-ICUB, 050567 Bucharest, Romania; (D.M.G.); (M.S.)
- National Institute of Research and Development for Biological Sciences, 060031 Bucharest, Romania
| | - Miruna Stan
- Department of Microbiology and Biochemistry, Research Institute of the University of Bucharest-ICUB, 050567 Bucharest, Romania; (D.M.G.); (M.S.)
| | - Carmen Lidia Chitescu
- Faculty of Medicine and Pharmacy, “Dunarea de Jos” University of Galati, 800008 Galati, Romania;
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Boateng ID, Kumar R, Daubert CR, Flint-Garcia S, Mustapha A, Kuehnel L, Agliata J, Li Q, Wan C, Somavat P. Sonoprocessing improves phenolics profile, antioxidant capacity, structure, and product qualities of purple corn pericarp extract. ULTRASONICS SONOCHEMISTRY 2023; 95:106418. [PMID: 37094478 PMCID: PMC10149314 DOI: 10.1016/j.ultsonch.2023.106418] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 05/03/2023]
Abstract
For the first time, purple corn pericarp (PCP) was converted to polyphenol-rich extract using two-pot ultrasound extraction technique. According to Plackett-Burman design (PBD), the significant extraction factors were ethanol concentration, extraction time, temperature, and ultrasonic amplitude that affected total anthocyanins (TAC), total phenolic content (TPC), and condensed tannins (CT). These parameters were further optimized using the Box-Behnken design (BBD) method for response surface methodology (RSM). The RSM showed a linear curvature for TAC and a quadratic curvature for TPC and CT with a lack of fit > 0.05. Under the optimum conditions (ethanol (50%, v/v), time (21 min), temperature (28 °C), and ultrasonic amplitude (50%)), a maximum TAC, TPC, and CT of 34.99 g cyanidin/kg, 121.26 g GAE/kg, and 260.59 of EE/kg, respectively were obtained with a desirability value 0.952. Comparing UAE to microwave extraction (MAE), it was found that although UAE had a lower extraction yield, TAC, TPC, and CT, the UAE gave a higher individual anthocyanin, flavonoid, phenolic acid profile, and antioxidant activity. The UAE took 21 min, whereas MAE took 30 min for maximum extraction. Regarding product qualities, UAE extract was superior, with a lower total color change (ΔE) and a higher chromaticity. Structural characterization using SEM showed that MAE extract had severe creases and ruptures, whereas UAE extract had less noticeable alterations and was attested by an optical profilometer. This shows that ultrasound, might be used to extract phenolics from PCP as it requires lesser time and improves phenolics, structure, and product qualities.
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Affiliation(s)
- Isaac Duah Boateng
- Food Science Program, Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO 65211, United States of America.
| | - Ravinder Kumar
- Food Science Program, Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO 65211, United States of America.
| | - Christopher R Daubert
- College of Agriculture, Food, and Natural Resources, University of Missouri, Columbia, MO 65211, United States of America.
| | - Sherry Flint-Garcia
- US Department of Agriculture, Plant Genetics Research Unit, Columbia, MO 65211, United States of America.
| | - Azlin Mustapha
- Food Science Program, Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO 65211, United States of America.
| | - Lucas Kuehnel
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, United States of America.
| | - Joseph Agliata
- Food Science Program, Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO 65211, United States of America.
| | - Qianwei Li
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, United States of America.
| | - Caixia Wan
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, United States of America.
| | - Pavel Somavat
- Food Science Program, Division of Food, Nutrition and Exercise Sciences, University of Missouri, Columbia, MO 65211, United States of America; Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, United States of America.
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Elgudayem F, Aldiyab A, Albalawi MA, Omran A, Kafkas NE, Saghrouchni H, Var I, Rahman MA, El Sabagh A, Sakran M, Ben Ahmed C. Box-Behnken design based optimization of phenolic extractions from Polygonum equisetiforme roots linked to its antioxidant and antibacterial efficiencies. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2023. [DOI: 10.3389/fsufs.2023.1141207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
PurposeThe Polygonum equisetifome is a prospective plant source of high protein, unsaturated fatty acids, and useful safe bioactive molecules. Therefore, the aim of this study was to optimize the ultrasonic aqueous extraction of phenols from P. equisetifome roots using Box-Behnken design based statistical modeling, and to evaluate the antioxidant and antibacterial efficiencies of P. equisetifome root extracts against pathogenic bacteria.MethodsIn this study, the box-behnken design was used to optimize the extraction of phenols. The extraction temperature (30–70°C), ultrasound assisted extraction (UAE) time (1–9 min), and liquid-solid ratio (35–45 mL/g) were investigated as the factors that influence the phenolic yield (Y1) and their DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging activity (Y2).ResultsThe optimal conditions for both responses were 50°C, 5 min, and 40 mL/g. At these conditions, Y1 reached its maximum to be 45.321 mg GAE/g dry weight and Y2 to be 120.354 μmol Trolox/g dry weight. The P. equisetifome roots contained water soluble phenol, high anthocyanin, and condensed tannins. Interestingly, the P. equisetifome extracts showed a relation to its antioxidant and antibacterial activities, FRAP (Ferric-reducing/antioxidant power), and ABTS scavenging activity were determined. The morphological and physico-chemical features of the extract were analyzed using SEM-EDX, FT-IR, and minimum inhibitory concentration (MIC) was analyzed against several pathogenic bacteria. The antibacterial activity of the extract showed that the extract is more efficient against Staphylococcus aureus, while the P. equisetifome extracts showed efficient MIC against S. aureus, followed by Bacillus cereus.SuggestionsThe relation of P. equisetifome extracts to its antioxidant, and antibacterial efficiencies open a new avenue of their potential uses in the food and pharmaceutical industries.
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Sirisangsawang R, Phetyim N. Optimization of tannin extraction from coconut coir through response surface methodology. Heliyon 2023; 9:e13377. [PMID: 36816295 PMCID: PMC9936520 DOI: 10.1016/j.heliyon.2023.e13377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 01/19/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Coconut coir is produced by extracting tiny grains of coir from coconut shell, which is an agricultural product that is abundant in Thailand. Coir is typically discarded, but it is a useful material because it contains tannins. Tannin is a polyphenolic compound that is prevalent in the plant kingdom, including in wood, bark, rhizomes, roots, and fruits. In this study, we extracted tannins from coconut coir using two types of solvents: water and ethanol. Optimization of the tannin content was achieved via RSM (response surface methodology) with the assistance of Design-Expert software. Meanwhile, the temperature (30-70 °C), ratio of solid to solvent (1:20-1:40), and solvent type (water or ethanol) were optimized via central composite design (CCD). The optimum model using analysis of variance revealed R2 = 0.9825, and adj.R2 = 0.9687. Temperature is affected by tannin content, and high temperatures result in a higher tannin content when using water than when using ethanol. Optimum conditions for coconut coir extraction using water with ethanol include a ratio for solid to solvent of 1:30 and the temperature set to 70 °C. The validated model exhibits errors of 8.24 and 11.08% for water and ethanol, respectively. Confirmation of the presence of tannins in the crude extract was carried out via Fourier-transform infrared spectroscopy and through the use of liquid chromatography with tandem mass spectrometry.
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Ayalew AA, Wodag AF. Extraction and Chromatographic Analysis of Ethiopian Oak Bark Plant for Leather Tanning Applications. CHEMISTRY AFRICA 2023. [DOI: 10.1007/s42250-022-00580-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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ZHANG X, PAN H, ZHAO W, ZHAO F, ZHANG Q. Ultrasound-assisted extraction of a condensed tannin and its application for removal dyes from water. FOOD SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1590/fst.125622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Xue ZHANG
- Northwest A&F University, China; Shaanxi Province Key Laboratory of Exploitation and Utilization of Economic Plant Resources, China
| | - Hongfang PAN
- Northwest A&F University, China; Shaanxi Province Key Laboratory of Exploitation and Utilization of Economic Plant Resources, China
| | - Wei ZHAO
- Northwest A&F University, China; Shaanxi Province Key Laboratory of Exploitation and Utilization of Economic Plant Resources, China
| | - Fang ZHAO
- Northwest A&F University, China; Shaanxi Province Key Laboratory of Exploitation and Utilization of Economic Plant Resources, China
| | - Qiang ZHANG
- Northwest A&F University, China; Shaanxi Province Key Laboratory of Exploitation and Utilization of Economic Plant Resources, China
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Extraction and characterization of total phenolic and flavonoid contents from bark of Swietenia macrophylla and their antimicrobial and antioxidant properties. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Woumbo CY, Kuate D, Metue Tamo DG, Womeni HM. Antioxidant and antidiabetic activities of a polyphenol rich extract obtained from Abelmoschus esculentus (okra) seeds using optimized conditions in microwave-assisted extraction (MAE). Front Nutr 2022; 9:1030385. [PMID: 36386938 PMCID: PMC9650115 DOI: 10.3389/fnut.2022.1030385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/12/2022] [Indexed: 08/10/2023] Open
Abstract
Functional foods have gained popularity in recent decades. They are exploited for their bioactive compounds like polyphenols, which are highly demanded in cosmetic, pharmaceutical and nutraceutical industries. However, extractive techniques and conditions used up to recently are almost obsolete and must be optimized for higher efficiency. The current study aimed to evaluate the antidiabetic potential of an optimized extract of Abelmoschus esculentus (okra) seeds. The optimal conditions for extracting polyphenolic compounds from okra seeds were determined using Microwave Assisted Extraction (MAE). A Face Center Composite Design (FCCD) was used for optimization. Solvent/dry matter ratio, wavelength and time were considered while the response studied was the polyphenolic content. The extract obtained at optimal conditions was characterized using Thin Layer Chromatography (TLC) and Fourier Transform Infra-Red (FTIR) spectroscopy, then tested for its antioxidant, alpha amylase inhibitory and antidiabetic activities. Response Surface Methodology (RSM) permitted the determination of the optimal conditions for phenols extraction as: microwave power 330 W, with a solvent ratio of 97.04/1 mL/g for 9.5 min of extraction time. The optimized extract showed a phenolic content up to 86.37 ± 1.13 mg GAE/g containing quercetin and catechin as revealed by the TLC. Functional groups characteristic of polyphenols were identified on FTIR spectra, and the extract exhibited good in vitro antioxidant capacities with DPPH (2, 2-diphenyl-1-picrylhydrazyl) radical scavenging capacity and FRAP (Ferric Reducing Antioxidant Power Assay). An IC50 of 3.99 ± 0.15 μg/mL was obtained with the DPPH scavenging test. Alpha amylase inhibitory assay revealed that the optimized okra extract behaved as a non-competitive inhibitor of porcine pancreatic amylase with an IC50 of 484.17 ± 2.33 μg/mL. Antidiabetic activity of the extract was observed in streptozotocin-induced diabetic males Wistar rats, as shown by the fasting blood glucose levels, food intake, changes in body weight and serum lipid profile among others.
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Affiliation(s)
- Cerile Ypolyte Woumbo
- Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon
| | - Dieudonné Kuate
- Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon
| | | | - Hilaire Macaire Womeni
- Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon
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Kovač MJ, Jokić S, Jerković I, Molnar M. Optimization of Deep Eutectic Solvent Extraction of Phenolic Acids and Tannins from Alchemilla vulgaris L. PLANTS (BASEL, SWITZERLAND) 2022; 11:474. [PMID: 35214807 PMCID: PMC8876725 DOI: 10.3390/plants11040474] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/02/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Alchemilla vulgaris L. is a good source of antioxidant components with an emphasis on phenolic acids and tannins. In this study, gallic acid, ellagic acid, and hydrolyzable tannins (HT) were extracted from this plant with different deep eutectic solvents (DESs), varying the amount of added H2O, temperature and extraction time. Seventeen DESs (n = 3) were used for the extraction, of which choline chloride:urea (1:2) proved to be the most suitable. The selection of the best solvent was followed by the examination of the influence of the extraction type and parameters using response surface methodology (RSM). Gallic acid content was in the range of 0.00-1.89 µg mg-1, ellagic acid content was 0.00-12.76 µg mg-1 and hydrolyzable tannin (HT) content was 3.06-181.26 µgTAE mg-1, depending on the used technique and the extraction conditions. According to the results, extraction by stirring and heating was the most suitable since the highest amounts of gallic acid, ellagic acid, and HT were extracted, and the obtained optimal values using response surface methodology (RSM) are confirmed by experimentally obtained values.
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Affiliation(s)
- Martina Jakovljević Kovač
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.J.K.); (S.J.)
| | - Stela Jokić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.J.K.); (S.J.)
| | - Igor Jerković
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
| | - Maja Molnar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.J.K.); (S.J.)
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Zmirli Z, Driouich A, El harfaoui S, Mohssine A, Mountacer H, Sallek B, Chaair H. Assessment of the principal factors influencing the silver cyanidation process by using Plackett-Burman experimental design. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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SILVA TOM, NOGUEIRA JP, REZENDE YRRS, OLIVEIRA CSD, NARAIN N. Bioactive compounds and antioxidants activities in the agro-industrial residues of berries by solvent and enzyme assisted extraction. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.61022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Valencia-Hernandez LJ, Wong-Paz JE, Ascacio-Valdés JA, Chávez-González ML, Contreras-Esquivel JC, Aguilar CN. Procyanidins: From Agro-Industrial Waste to Food as Bioactive Molecules. Foods 2021; 10:3152. [PMID: 34945704 PMCID: PMC8701411 DOI: 10.3390/foods10123152] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022] Open
Abstract
Procyanidins are an important group of bioactive molecules known for their benefits to human health. These compounds are promising in the treatment of chronic metabolic diseases such as cancer, diabetes, and cardiovascular disease, as they prevent cell damage related to oxidative stress. It is necessary to study effective extraction methods for the recovery of these components. In this review, advances in the recovery of procyanidins from agro-industrial wastes are presented, which are obtained through ultrasound-assisted extraction, microwave-assisted extraction, supercritical fluid extraction, pressurized fluid extraction and subcritical water extraction. Current trends focus on the extraction of procyanidins from seeds, peels, pomaces, leaves and bark in agro-industrial wastes, which are extracted by ultrasound. Some techniques have been coupled with environmentally friendly techniques. There are few studies focused on the extraction and evaluation of biological activities of procyanidins. The identification and quantification of these compounds are the result of the study of the polyphenolic profile of plant sources. Antioxidant, antibiotic, and anti-inflammatory activity are presented as the biological properties of greatest interest. Agro-industrial wastes can be an economical and easily accessible source for the extraction of procyanidins.
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Affiliation(s)
- Leidy Johana Valencia-Hernandez
- Bioprocesses and Bioproducts Research Group, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo C.P. 25280, CH, Mexico; (L.J.V.-H.); (J.A.A.-V.); (M.L.C.-G.); (J.C.C.-E.)
| | - Jorge E. Wong-Paz
- Tecnológico Nacional de México, Instituto Tecnológico de Ciudad Valles, Ciudad Valles C.P. 79010, SL, Mexico;
| | - Juan Alberto Ascacio-Valdés
- Bioprocesses and Bioproducts Research Group, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo C.P. 25280, CH, Mexico; (L.J.V.-H.); (J.A.A.-V.); (M.L.C.-G.); (J.C.C.-E.)
| | - Mónica L. Chávez-González
- Bioprocesses and Bioproducts Research Group, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo C.P. 25280, CH, Mexico; (L.J.V.-H.); (J.A.A.-V.); (M.L.C.-G.); (J.C.C.-E.)
| | - Juan Carlos Contreras-Esquivel
- Bioprocesses and Bioproducts Research Group, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo C.P. 25280, CH, Mexico; (L.J.V.-H.); (J.A.A.-V.); (M.L.C.-G.); (J.C.C.-E.)
| | - Cristóbal N. Aguilar
- Bioprocesses and Bioproducts Research Group, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo C.P. 25280, CH, Mexico; (L.J.V.-H.); (J.A.A.-V.); (M.L.C.-G.); (J.C.C.-E.)
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Valorization of Glycine max (Soybean) Seed Waste: Optimization of the Microwave-Assisted Extraction (MAE) and Characterization of Polyphenols from Soybean Meal Using Response Surface Methodology (RSM). J CHEM-NY 2021. [DOI: 10.1155/2021/4869909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The present study aimed at determining the optimal conditions for extraction of total phenolic compounds from soybean (Glycine max) meal, a by-product of the soybean seeds industry, using a green protocol with microwave-assisted extraction (MAE). A face-centered composite design (FCCD) was used for optimization. Based on a screening aimed to determine the factors that significantly influenced the responses, a 50% hydro-ethanolic solution was used with solvent/dry matter ratio (60/1–110/1), power (120–270 W), and time (0–10 min) as factors, while the responses studied were total phenolic and flavonoid contents. FTIR, TLC, DPPH, and FRAP anti-oxidants tests were used to characterize the extracts obtained with optimum conditions. The factors that significantly influenced both responses were the individual effect of all factors, the interaction between solvent/dry matter ratio and extraction time, the quadratic effect of solvent/dry matter ratio, and power for total phenolic content, while only the quadratic effect of power significantly influenced the flavonoid content. The highest contents of phenols (13.09 mg GAE/g) and flavonoid (7.39 mg CE/g) were obtained at 120 W for 0.16 min with a solvent/dry matter ratio of 60/1. ATR-FTIR spectra indicated the presence of polyphenolic compounds in the extract, namely flavonoids. TLC indicated the presence of at least nine compounds in the extract, among which catechin and quercetin were identified with respective Rf of 0.98 and 0.93. DPPH assay showed the anti-oxidant capacity for the extract with an IC50 of 194.98 µg/ml. RSM permitted us to develop a green protocol for maximum extraction of polyphenols from soybean seeds waste using less solvent, low power, and a reduced time in MAE.
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16
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Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six Eucalyptus Species. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11219818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The leaves of Eucalyptus have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six Eucalyptus species, E. globulus, E. oblicua, E. pavaflora, E. camaldulensis, E. viminalis, and E. nitens, and to study their antioxidant capacity. Solvents such as acetone, dichloromethane, ethanol, hexane, methanol, and water were used to study how polarity influences extraction yields. The SLE method achieved higher or similar yields, depending on the species and its composition, than the Soxlet method at a temperature of 50 °C. The highest yields were obtained with E. viminalis with methanol (42.5 wt.%), the highest phenolic content was obtained with E. nitens with methanol (124.17 mg GAE/g of extract), and the highest anthocyanin levels obtained were with E. nitens with hexane (5.05 mg CC/g of extract). E. nitens obtained almost five times more phenolic content than E. globulus; therefore, it is the most promising species. The high content of the compounds analysed confirm the good potential of these species to obtain value-added compounds. Our results demonstrate that the differences in the extract contents depend on the polarity of the solvents used. In addition, the use of these species will reduce the residue in the forest, which is greatly beneficial.
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Patra A, Abdullah S, Pradhan RC. Microwave-assisted extraction of bioactive compounds from cashew apple (Anacardium occidenatale L.) bagasse: modeling and optimization of the process using response surface methodology. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-01042-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Silva CCAR, Gomes CL, Danda LJA, Roberto AEM, Carvalho AMRDE, Ximenes ECPA, Silva RMFDA, Angelos MA, Rolim LA, Rolim Neto PJ. Optimized microwave-assisted extraction of polyphenols and tannins from Syzygium cumini (L.) Skeels leaves through an experimental design coupled to a desirability approach. AN ACAD BRAS CIENC 2021; 93:e20190632. [PMID: 34259791 DOI: 10.1590/0001-3765202120190632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 10/07/2019] [Indexed: 11/22/2022] Open
Abstract
The present study consisted in optimizing the extractive method of polyphenols and total tannins of leaves of Syzygium cumini (L) Skeels assisted by microwaves to potentiate the antimicrobial activity of the dried extract of S. cumini against sensitive and resistant strains. A Box-Behnken design that consisted of 27 experimental runs coupled with a desirability function for multiple response optimization was employed to optimize the total polyphenols content and total tannins content. Antimicrobial sensitivity tests were evaluated by obtaining the minimum inhibitory concentration, minimum fungicidal concentration and minimum bactericidal concentration in 96-well petri dishes. The optimal extraction conditions were found to be 8 min of extraction, under 300 w of microwave power, using a 1:34 g/mL solid/solvent ratio and 38% of ethanol concentration as extraction solvent. The parameter with the greatest influence in the extraction was primarily the time, followed by the potency and proportion solid/solvent. This yielded a total polyphenol content of 87.37 ± 1.85 mg TAE g-1ext and a total tannin content of 79.68 ± 1.64 mg TAE g-1 ext. All tested microorganisms were sensitive to the extract, evidencing the effectiveness of the extraction method optimization.
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Affiliation(s)
- Caio C A R Silva
- Universidade Federal de Pernambuco/UFPE, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil.,Laboratório Farmacêutico do Estado de Pernambuco Governador Miguel Arraes/LAFEPE, Largo de Dois Irmãos, 1117, Dois Irmãos, 52171-010 Recife, PE, Brazil
| | - Camila L Gomes
- University of Coimbra, Faculty of Pharmacy, Pharmaceutical Technology Departament, Azinhaga Sta. Comba, 3000-548 Coimbra, Portugal
| | - Lucas J A Danda
- Universidade Federal de Pernambuco/UFPE, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Ana Emília M Roberto
- Universidade Federal de Pernambuco/UFPE, Centro de Biociências, Departamento de Micologia, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Ana Maria R DE Carvalho
- Universidade Federal de Pernambuco/UFPE, Centro de Biociências, Departamento de Micologia, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Eulália C P A Ximenes
- Universidade Federal de Pernambuco/UFPE, Centro de Biociências, Departamento de Antibióticos, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Rosali M F DA Silva
- Universidade Federal de Pernambuco/UFPE, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Matheus A Angelos
- Universidade Federal de Pernambuco/UFPE, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
| | - Larissa A Rolim
- Universidade Federal do Vale do São Francisco/UNIVASF, Central de Análise de Fármacos, Medicamentos e Alimentos, Av. José de Sá Maniçoba, s/n, Centro, 56304-205 Petrolina, PE, Brazil
| | - Pedro J Rolim Neto
- Universidade Federal de Pernambuco/UFPE, Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Av. Prof. Arthur de Sá, s/n, 50740-525 Recife, PE, Brazil
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Evaluation of bioactive compounds, phytochemicals profile and antioxidant potential of the aqueous and ethanolic extracts of some traditional fruit tree leaves used in Brazilian folk medicine. Food Res Int 2021; 143:110282. [PMID: 33992382 DOI: 10.1016/j.foodres.2021.110282] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/07/2021] [Accepted: 02/26/2021] [Indexed: 11/20/2022]
Abstract
The aim of this study was to analyze eight selected species of leaves, used in the traditional medicine of the Northeast region of Brazil obtained from several fruit trees (grageru, soursop, jambolanum, passion fruit, insulin, nogueira, pedra ume kaá and stévia), regarding their polyphenols contents and antioxidant activity. Condensed and hydrolysable tannins, phenolics and flavonoids contents were determined and the antioxidant activities measured by ABTS, FRAP and ORAC assays. Organic acids were analyzed by HPLC-DAD system. Phenolic compounds of aqueous and ethanolic extracts were determined by UHPLC-DAD-MS. The results revealed high contents of total phenolics (13.34 ± 0.19 - 127.65 ± 0.21 mg.g-1 of GAE:QE (2:1) of sample) and flavonoids (12.30 ± 0.42 - 71.79 ± 0.00 mg.g-1 QE of sample). The ABTS results exhibited extraordinary activity in the extracts (74.48 ± 6.23 - 1487.33 ± 2.67 µmol Trolox.g-1 of sample). Acids quinic, tartaric, citric, gallic, chlorogenic, p-coumaric, ferulic and vanillic along with naringenin, rutin, vanillin, catechin, epicatechin, kaempferol were the most important compounds. Thus, these leaves extracts may be considered as sources of phenolics compounds having a high potential as natural antioxidants. In addition, the polyphenols present in these leaves have many beneficial effects and can also be used in medicinal and nutraceuticals products with enhanced bioactivities.
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20
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Optimization Studies of Porous Carbon Preparation from Oil Shale Using Response Surface Methodology and Its Application for Phenol Adsorption. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-8114-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Taşkın B, Aksoylu Özbek Z. Optimisation of microwave effect on bioactives contents and colour attributes of aqueous green tea extracts by central composite design. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00471-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Zhao C, Yang X, Tian H, Yang L. An improved method to obtain essential oil, flavonols and proanthocyanidins from fresh Cinnamomum japonicum Sieb. leaves using solvent-free microwave-assisted distillation followed by homogenate extraction. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Manzoor MF, Zeng XA, Rahaman A, Siddeeg A, Aadil RM, Ahmed Z, Li J, Niu D. Combined impact of pulsed electric field and ultrasound on bioactive compounds and FT-IR analysis of almond extract. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2019; 56:2355-2364. [PMID: 31168118 PMCID: PMC6525683 DOI: 10.1007/s13197-019-03627-7] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/27/2019] [Accepted: 01/31/2019] [Indexed: 12/28/2022]
Abstract
The aim of this paper is to investigate the combined impact of pulsed electric field (PEF) and ultrasound (US) to evaluate the physicochemical, bioactive compounds and chemical structure of almond extract. Almond extract was first treated with PEF and then with US. Combined treatment (PEF-US) has attained the highest value of total phenolics, total flavonoids, condense tannins, anthocyanin contents and antioxidant activity in DPPH, reducing power and metal chelating activity than all other treatments. Among all those treatments, there was slightly visible difference in the color. Moreover, FT-IR spectra indicate that the effect of PEF-US on almond extract did not produce new carbonyl compounds, but led to the higher concentration of these compounds. This study demonstrated that the PEF-US could be useful for the extraction of bioactive compounds as well as improving the stability of volatile compounds.
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Affiliation(s)
- Muhammad Faisal Manzoor
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Xin-An Zeng
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Abdul Rahaman
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Azhari Siddeeg
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
- Department of Food Engineering and Technology, Faculty of Engineering and Technology, University of Gezira, Wad Medani, Sudan
| | - Rana Muhammad Aadil
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- National Institute of Food Science and Technology, University Agriculture Faisalabad, Faisalabad, 38000 Pakistan
| | - Zahoor Ahmed
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Jian Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Debao Niu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
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A Critical Review of Phenolic Compounds Extracted from the Bark of Woody Vascular Plants and Their Potential Biological Activity. Molecules 2019; 24:molecules24061182. [PMID: 30917556 PMCID: PMC6470986 DOI: 10.3390/molecules24061182] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 03/19/2019] [Accepted: 03/24/2019] [Indexed: 01/05/2023] Open
Abstract
Polyphenols are one of the largest and most widespread groups of secondary metabolites in the plants world. These compounds are of particular interest due to their occurrence and the properties they possess. The main sources of phenolic compounds are fruits and vegetables, but lately, more and more studies refer to woody vascular plants, especially to bark, as an important source of phenolic compounds with a potential biological effect. This study aims to bring together information on the phenolic compounds present in the bark of woody vascular plants by discussing extraction methods, the chemical composition of the extracts and potential biological effects. The literature data used in this paper were collected via PubMed (2004⁻2019). Search terms were: bark, rhytidome, woody vascular plant, polyphenols, phenolic compounds, biologic activity, antioxidant, immunostimulatory, antimutagenic, antibacterial, anti-inflammatory, and antitumoral. This paper intends to highlight the fact that the polyphenolic extracts obtained from the bark of woody vascular plants represent sources of bioactive compounds with antioxidant, immunostimulatory, antimutagenic, antibacterial properties, etc. Future research directions should be directed towards identification and isolation of bioactive compounds. Consequently, biologically active compounds obtained from the bark of woody plants could be exploited on an industrial scale.
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Abdi M, Mohd Azli NFW, Lim HN, Tahir PM, Karimi G, Hoong YB, Khorram M. Polypyrrole/tannin biobased nanocomposite with enhanced electrochemical and physical properties. RSC Adv 2018; 8:2978-2985. [PMID: 35541172 PMCID: PMC9077512 DOI: 10.1039/c7ra13378b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 12/26/2017] [Indexed: 11/23/2022] Open
Abstract
In this research, tannin (TA) extracted from Acacia mangium and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), were used to modify and enhance the physical and electrochemical properties of a polypyrrole (PPy) composite. Brunauer–Emmett–Teller (BET) analysis presented a higher degree of surface area and porosity for the PPy/TA/CTAB nanocomposite. A highly porous and rod like structure with a lumpy surface was observed for PPy/TA prepared in the presence of CTAB by Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). Cyclic voltammograms of the modified SPE electrode using PPy/TA/CTAB displayed an enhanced current response compared to the electrode modified with only PPy or PPy/TA. Electrochemical Impedance Spectroscopy (EIS) exhibited a lower value of charge transfer resistance (Rct) and higher electron transfer for the modified electrode, making the nanocomposite a promising candidate for biosensor application. Tannin (TA) extracted from Acacia mangium and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), were used to modify and enhance the physical and electrochemical properties of polypyrrole (PPy) composite.![]()
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Affiliation(s)
- Mahnaz M. Abdi
- Department of Chemical Engineering
- Shiraz University
- Shiraz
- Iran
- Institute of Tropical Forestry and Forest Products
| | | | - Hong Ngee Lim
- Department of Chemistry
- Faculty of Science
- Universiti Putra Malaysia
- 43400 UPM Serdang
- Malaysia
| | - Paridah Md Tahir
- Institute of Tropical Forestry and Forest Products
- Universiti Putra Malaysia
- 43400 UPM Serdang
- Malaysia
| | | | - Yeoh Beng Hoong
- Fiber Development Centre
- Malaysian Timber Industry Board
- Malaysia
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Sowndhararajan K, Santhanam R, Hong S, Jhoo JW, Kim S. Suppressive effects of acetone extract from the stem bark of three Acacia species on nitric oxide production in lipopolysaccharide-stimulated RAW 264.7 macrophage cells. Asian Pac J Trop Biomed 2016. [DOI: 10.1016/j.apjtb.2016.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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