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Huang Y, An M, Fang A, Olatunji OJ, Eze FN. Antiproliferative Activities of the Lipophilic Fraction of Eucalyptus camaldulensis against MCF-7 Breast Cancer Cells, UPLC-ESI-QTOF-MS Metabolite Profile, and Antioxidative Functions. ACS OMEGA 2022; 7:27369-27381. [PMID: 35967023 PMCID: PMC9366772 DOI: 10.1021/acsomega.2c02389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Although a number of pharmacological properties have been linked to Eucalyptus camaldulensis leaf essential oil and extracts, the biological attributes of the lipophilic fraction remain unknown. Moreover, only a limited number of active compounds have so far been identified. This work aimed to investigate the anti-oxidative, anti-aggregation, and cytotoxic properties as well as profile the secondary metabolites in the lipophilic fraction of E. camaldulensis leaf extract (Lipo-Eucam) using UHPLC-ESI-QTOF-MS and gas chromatography-mass spectrometry (GC-MS). It was found that Lipo-Eucam possessed potent antioxidant properties against DPPH, ABTS, and FRAP with IC50 values of 31.46, 32.78, and 10.12 μg/mL, respectively. The fraction was able to attenuate metal-catalyzed oxidation of bovine serum albumin (BSA) in a dose-dependent manner (p < 0.05) and abrogated the aggregation of amyloidogenic BSA as revealed by the Congo red assay and transmission electron microscopy. Furthermore, Lipo-Eucam demonstrated potent cytotoxic effects against MCF-7 (IC50 7.34 μg/mL) but was noncytotoxic at used concentrations against HEK-293 cells (IC50 > 80 μg/mL), suggestive of its selective anticancer properties. Spectrophotometric, UHPLC-MS, and GC-MS analysis revealed that Lipo-Eucam is rich in phenolics, flavonoids, terpenoids, volatile constituents, and a plethora of active metabolites, probably responsible for the observed activities. These findings indicate that Lipo-Eucam is endowed with pharmacologically relevant active principles with strong potential for use in the amelioration of disease conditions related to oxidative stress, protein aggregation, and breast cancer and therefore worthy of further investigations.
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Affiliation(s)
- Yanping Huang
- Department
of Human Anatomy, Histology & Embryology, Anhui Medical College, Hefei 230601, China
| | - Mei An
- Department
of Human Anatomy, Histology & Embryology, Anhui Medical College, Hefei 230601, China
| | - Anning Fang
- Department
of Human Anatomy, Histology & Embryology, Anhui Medical College, Hefei 230601, China
| | - Opeyemi Joshua Olatunji
- Traditional
Thai Medical Research and Innovation Center, Faculty of Traditional
Thai Medicine, Prince of Songkla University, Hat Yai 90110, Thailand
| | - Fredrick Nwude Eze
- Drug
Delivery Systems Excellence Center, Prince
of Songkla University, Hat Yai 90112, Songkhla, Thailand
- Faculty
of Pharmaceutical Sciences, Prince of Songkla
University, Hat Yai 90112, Songkla, Thailand
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Jin N, Liu Y, Wang X, Yang K, Zhang D, Ding A. In-vitro toxicity assessment of Eucalyptus robusta Smith extracts via whole-cell bioreporter. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 240:113704. [PMID: 35653968 DOI: 10.1016/j.ecoenv.2022.113704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/07/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Eucalyptus is widely planted in China for wood industries, and there are increasing concerns about its ecotoxicity in the environment. This study explored the in-vitro toxicity of Eucalyptus extracts by assessing the impacts of water-soluble and dimethylsulfoxide (DMSO)-soluble fractions via a whole-cell bioreporter, Acinetobacter baylyi ADPWH_recA. Compounds identified in Eucalyptus extracts included one tannin, two phenolic acids, four terpenoids, four glycosides, and five flavonoids. The leaf extracts contained more biological-active components than barks and roots. Genotoxicity induced by Eucalyptus extracts was mainly associated with water extracts (e.g., flavonoids, phenolic acids) instead of DMSO extracts. The significant cytotoxicity was explained by programmed cell death (PCD), suggested by the results of propidium iodide (PI) and 2',7'-dichlorofluorescein-diacetate (DCFH-DA) assays. Generally, water-soluble fractions contributed more toxicities than DMSO-soluble fractions, particularly at high concentrations. A robust linear regression was built between the compromised toxicity and PCD index (Compromised toxicity = -2.192 × PCD index + 2.219; R2 = 0.8886), suggesting a PCD-dependent compromised toxicity which was greatly underestimated. Our results implied non-neglectable ecotoxicological risks of Eucalyptus extracts, hinting at the possible magnified ecological impacts of its large-scale plantation and the potential adverse outcomes to the surrounding ecosystems.
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Affiliation(s)
- Naifu Jin
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Yueqiao Liu
- Experiment and Practice Innovation Education Center, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China
| | - Xinzi Wang
- School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Kai Yang
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Dayi Zhang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, PR China; College of New Energy and Environment, Jilin University, Changchun 130021, PR China.
| | - Aizhong Ding
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
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Faezeh Taghizadeh S, Panahi A, Esmaeilzadeh Kashi M, Kretschmer N, Asili J, Ahmad Emami S, Azizi M, Shakeri A. Structural Diversity of Complex Phloroglucinol Derivatives from Eucalyptus Species. Chem Biodivers 2022; 19:e202200025. [PMID: 35621714 DOI: 10.1002/cbdv.202200025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/16/2022] [Indexed: 12/17/2022]
Abstract
Several species of the genus Eucalyptus are used in many traditional medicine systems for the treatment of respiratory tract infections, colds, flu, sore throats, and bronchitis. The genus Eucalyptus (Myrtaceae) is a well-known natural source of bioactive phloroglucinols. These polyphenolic compounds bear an aromatic phenyl ring with three hydroxy groups (1,3,5-trihydroxybenzene) which have been exhibiting a variety of biological activities such as antimicrobial, anticancer, anti-allergic, anti-inflammatory, and antioxidant activities. This review summarizes the literature published from 1997 until the end of 2021 and addresses the structure diversity of phloroglucinols isolated from Eucalyptus species and their biological activities. Phloroglucinol-terpene adducts are the main class of compounds that have been reported in this genus.
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Affiliation(s)
- Seyedeh Faezeh Taghizadeh
- Department of Horticultural Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, 9177948978, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Ali Panahi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Marziyeh Esmaeilzadeh Kashi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Nadine Kretschmer
- Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, A-8010, Graz, Austria
| | - Javad Asili
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Seyed Ahmad Emami
- Department of Traditional Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Majid Azizi
- Department of Horticultural Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, 9177948978, Mashhad, Iran
| | - Abolfazl Shakeri
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
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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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Bioactive fractions of Eucalyptus camaldulensis inhibit important foodborne pathogens, reduce listeriolysin O-induced haemolysis, and ameliorate hydrogen peroxide-induced oxidative stress on human embryonic colon cells. Food Chem 2020; 344:128571. [PMID: 33221106 DOI: 10.1016/j.foodchem.2020.128571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/31/2020] [Accepted: 11/02/2020] [Indexed: 12/14/2022]
Abstract
Extract of E. camaldulensis was partitioned into aqueous and ethanol fractions by a precipitation and sedimentation-based technique and profiled for phytochemical components. Antimicrobial evaluation yielded inhibitory concentrations of 16-64 and 158-316 µg/mL, and bactericidal concentrations of 32-64 and 316->2528 µg/mL for ethanol and aqueous fractions, respectively. Antioxidant activities evaluated using 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic) acid assays showed IC50 values of 7.07 and 65.67 µg/mL, and 17.96 and 201.3 µg/mL for aqueous and ethanol fractions. Total phenolic content of 9.04 ± 0.26 and 3.58 ± 0.04 GAE/mg fraction, and flavonoid content of 2.07 ± 0.02 and 3.37 ± 0.05 QE/mg fraction were recorded for aqueous and ethanol fractions. At subinhibitory concentrations fractions significantly reduced listeriolysin O-induced haemolysis (p < 0.05), and ameliorated H2O2-induced toxicity by 8-23 and 15-83%. Nitrite production reduced by 4-17 and 3-14 µM following fractions treatment. The fractions showed bioactive properties, with oxidative stress amelioratory effects, and could be a potentials source of preservatives and functional food additives.
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Gullón P, Gullón B, Astray G, Munekata PES, Pateiro M, Lorenzo JM. Value-Added Compound Recovery from Invasive Forest for Biofunctional Applications: Eucalyptus Species as a Case Study. Molecules 2020; 25:E4227. [PMID: 32942656 PMCID: PMC7570642 DOI: 10.3390/molecules25184227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
From ancient times, the medicinal properties of the different Eucalyptus species are well known. In fact, plants from this family have been used in folk medicine as antiseptics, and to treat different ailments of the upper respiratory tract such as sinus congestion, common cold, or influenza. Moreover, other biological activities were described for Eucalyptus species such as antioxidant and antimicrobial properties. In the last few decades, numerous investigations revealed that the compounds responsible for these properties are secondary metabolites that belonging to the group of phenolic compounds and are present in different parts of the plants such as leaves, bark, wood, fruits, and stumps. The increasing demand for natural compounds that can substitute synthetic antioxidants and the increase in resistance to traditional antibiotics have boosted the intense search for renewable natural sources containing substances with such bioactivities, as well as greener extraction technologies and avant-garde analytical methods for the identification of the target molecules. The literature data used in this paper were collected via Scopus (2001-2020) using the following search terms: Eucalyptus, extraction methods, phenolic compounds, and biological activities. This review collects the main studies related to the recovery of value-added compounds from different Eucalyptus species, as well as their biofunctional applications.
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Affiliation(s)
- Patricia Gullón
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, 32004 Ourense, Spain;
| | - Beatriz Gullón
- Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), As Lagoas, 32004 Ourense, Spain;
| | - Gonzalo Astray
- Department of Physical Chemistry, Faculty Science, Faculty of Science, University of Vigo (Campus Ourense), As Lagoas, 32004 Ourense, Spain;
- CITACA, Agri-Food Research and Transfer Cluster, Campus Auga, University of Vigo, 32004 Ourense, Spain
| | - Paulo E. S. Munekata
- Centro Tecnológico de la Carne de Galicia, Rúa Galicia No 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.)
| | - Mirian Pateiro
- Centro Tecnológico de la Carne de Galicia, Rúa Galicia No 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.)
| | - José Manuel Lorenzo
- Centro Tecnológico de la Carne de Galicia, Rúa Galicia No 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.)
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidad de Vigo, 32004 Ourense, Spain
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Syukri DM, Nwabor OF, Singh S, Ontong JC, Wunnoo S, Paosen S, Munah S, Voravuthikunchai SP. Antibacterial-coated silk surgical sutures by ex situ deposition of silver nanoparticles synthesized with Eucalyptus camaldulensis eradicates infections. J Microbiol Methods 2020; 174:105955. [DOI: 10.1016/j.mimet.2020.105955] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/15/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
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