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Liu T, Xu LT, Ning DS, Fu YX, Li DX, Li LC, Pan ZH. Bioactive secondary metabolites isolated from the branches and leaves of Pittosporum pulchrum Gagnep. Fitoterapia 2024; 177:106145. [PMID: 39059747 DOI: 10.1016/j.fitote.2024.106145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/12/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Five new compounds, including two sesquiterpenoid glycosides (1 and 2), two monoterpenoid glycosides (3 and 4), and a quinovose ester (5), together with four known compounds (6-9) were isolated from branches and leaves of Pittosporum pulchrum Gagnep. Their structures were established by 1D and 2D NMR, HR-ESI-MS, IR and UV spectral analyses. This is the first time to investigate the chemical constituents of P. pulchrum. Subsequently, the anti-inflammatory and antioxidant activities of different solvent fractions of ethanol extract and isolated compounds were evaluated. Dichloromethane and ethyl acetate fractions dramatically inhibited the production of NO in a concentration-dependent manner in LPS-induced RAW264.7 cells. Ethyl acetate and n-butanol fractions showed excellent DPPH radical scavenging activities with IC50 values of 24.31 μg/mL and 27.81 μg/mL, respectively. Compounds 7 and 8 might be potential natural antioxidants with IC50 values of 16.13 μM and 24.81 μM, respectively.
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Affiliation(s)
- Ting Liu
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - Li-Ting Xu
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - De-Sheng Ning
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - Yu-Xia Fu
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - Dong-Xing Li
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - Lian-Chun Li
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
| | - Zheng-Hong Pan
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China.
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2
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Latinovic A, Nichols DS, Adams VM, McQuillan PB. Grouped SPME Comparison of Floral Scent as a Method of Unlocking Phylogenetic Patterns in Volatiles. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.795122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Global crop production rate has exceeded the availability of pollination services provided by managed honeybees, and habitat loss remains a key factor in the loss of wild pollinators. Revegetation of agricultural land and wild pollination may provide a solution; however, the collection of floral trait data that are correlated to pollinator preferences remains an under studied and complex process. Here, we demonstrate a method for scent analysis, ordination [non-metric dimensional scaling (NMDS)], and clustering outputs that provides a fast and reproducible procedure for a broad grouping of flora based on scent and unlocking characteristic inter-floral patterns. We report the floral profiles of 15 unstudied native Australian plant species and the extent to which they match the commonly cultivated seed crops of Daucus carota L and Brassica rapa L. Through solid-phase microextraction (SPME) paired with gas chromatography–mass spectrometry (GC-MS), we identify a set of inter-family shared, common floral volatiles from these plant species as well as unique and characteristic patterns.
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Agatonovic-Kustrin S, Gegechkori V, Morton DW. The effect of extractive lacto-fermentation on the bioactivity and natural products content of Pittosporum angustifolium (gumbi gumbi) extracts. J Chromatogr A 2021; 1647:462153. [PMID: 33957349 DOI: 10.1016/j.chroma.2021.462153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 10/21/2022]
Abstract
Pittosporum angustifolium, known as gumbi gumbi, is a native Australian plant, which has traditionally been used as an Aboriginal medicine. This study investigates the effect of different solvents and extractive fermentation on the content and natural products composition of Pittosporum angustifolium extracts, and compares their antioxidant activity, in vitro α-amylase inhibition, and anti-inflammatory properties. Anti-inflammatory activity of the extracts was determined by measuring the inhibition of nitric oxide (NO) production. Extracts were characterised with FTIR-ATR spectroscopy, and screened for antioxidant activities and α-amylase inhibitory activity via High-performance thin-layer chromatography (HPTLC)-Effect-directed analysis (EDA) with direct bioautography. HPTLC combined with chemical derivatization and bioassays was used for EDA screening. The results show that lactic acid fermentation of gumbi gumbi leaves boosts the antioxidant activity in extracts by increasing the total phenolic content, but does not affect (increase or decrease) α-amylase inhibitory activity or nitrogen scavenging/anti-inflammatory activity. Analysis of the ATR-FTIR spectra from the band at RF = 0.85 that inhibits α-amylase, suggests that fatty acid esters are responsible for the enzyme inhibition; both saturated fatty acid esters in unfermented extracts and unsaturated fatty acid esters in fermented extracts. The ATR-FTIR spectra of the polyphenolics in fermented extracts (RF = 0.15-0.20) suggests the presence of soluble lignin fragments (i.e. lignins depolymerized into monomers and oligomers during the fermentation process).
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Affiliation(s)
- Snezana Agatonovic-Kustrin
- Department of Pharmaceutical and Toxicological Chemistry named after Arzamastsev of the Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; School of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Sciences, La Trobe University, Edwards Rd, Bendigo 3550, Australia.
| | - Vladimir Gegechkori
- Department of Pharmaceutical and Toxicological Chemistry named after Arzamastsev of the Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
| | - David W Morton
- Department of Pharmaceutical and Toxicological Chemistry named after Arzamastsev of the Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; School of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Sciences, La Trobe University, Edwards Rd, Bendigo 3550, Australia
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4
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Mani JS, Johnson JB, Hosking H, Ashwath N, Walsh KB, Neilsen PM, Broszczak DA, Naiker M. Antioxidative and therapeutic potential of selected Australian plants: A review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113580. [PMID: 33189842 DOI: 10.1016/j.jep.2020.113580] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Numerous common pharmaceuticals, including anti-cancer, antiviral and antidiabetic drugs, are derived from traditional plant-derived medicines. With approximately 25,000 species of flora occurring in Australia that are adapted to the harsh environment, there is a plethora of novel compounds awaiting research in the context of their medicinal properties. Anecdotal accounts of plant-based medicines used by the Australian Aboriginal and Torres Strait Islander peoples clearly illustrates high therapeutic activity. AIM This review aims to demonstrate the medicinal potentials of selected native Australian plants based on scientific data. Furthermore, it is anticipated that work presented here will contribute towards enhancing our knowledge of native plants from Australia, particularly in the prevention and potential treatment of disease types such as cancer, microbial and viral infections, and diabetes. This is not meant to be a comprehensive study, rather it is meant as an overview to stimulate future research in this field. METHODS The EBSCOhost platform which included PubMed, SciFinder, Web of Knowledge, Scopus, and ScienceDirect databases were searched for papers using the keywords: medicinal plants, antioxidative, antimicrobial, antibacterial, anticancer, anti-tumor, antiviral or antidiabetic, as well as Australian, native, traditional and plants. The selection criteria for including studies were restricted to articles on plants used in traditional remedies which showed antioxidative potential and therapeutic properties such as anticancer, antimicrobial, antiviral and antidiabetic activity. RESULTS Some plants identified in this review which showed high Total Phenolic Content (TPC) and antioxidative capacity, and hence prominent bioactivity, included Tasmannia lanceolata (Poir.) A.C. Sm., Terminalia ferdinandiana Exell, Eucalyptus species, Syzygium species, Backhousia citriodora F.Muell., Petalostigma species, Acacia species, Melaleuca alternifolia (Maiden & Betche) Cheel, Eremophila species, Prostanthera rotundifolia R.Br., Scaevola spinescens R. Br. and Pittosporum angustifolium Lodd. The majority of studies found polar compounds such as caffeic acid, coumaric acid, chlorogenic acid, quercetin, anthocyanins, hesperidin, kaempferol, catechin, ellagic acid and saponins to be the active components responsible for the therapeutic effects. Additionally, mid to non-polar volatile organic compounds such as meroterpenes (serrulatanes and nerol cinnamates), monoterpenes (1,8-cineole and myodesert-1-ene), sesquiterpenes, diterpenes and triterpenes, that are known only in Australian plants, have also shown therapeutic properties related to traditional medicine. CONCLUSION Australian plants express a diverse range of previously undescribed metabolites that have not been given full in vitro assessment for human health potential. This review has included a limited number of plant species of ethnomedicinal significance; hundreds of plants remain in need of exploration and detailed study. Future more elaborate studies are therefore required to screen out and purify lead bioactive compounds against numerous other disease types. This will not only improve our knowledge on the phytochemistry of Australian native flora, but also provide a platform to understand their health-promoting and bioactive effects for pharmaceutical interventions, nutraceuticals, cosmetics, and as functional foods. Finally, plant-derived natural compounds (phytochemicals), as well as plant-based traditional remedies, are significant sources for latent and novel drugs against diseases. Extensive investigation of native medicinal plants may well hold the key to novel drug discoveries.
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Affiliation(s)
- Janice S Mani
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia; Institute of Future Farming Systems, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia.
| | - Joel B Johnson
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia; Institute of Future Farming Systems, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
| | - Holly Hosking
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
| | - Nanjappa Ashwath
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia; Institute of Future Farming Systems, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
| | - Kerry B Walsh
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia; Institute of Future Farming Systems, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
| | - Paul M Neilsen
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
| | - Daniel A Broszczak
- Institute of Health & Biomedical Innovation (Q-Block), Queensland University of Technology, Kelvin Grove Campus, QLD, Australia
| | - Mani Naiker
- School of Health, Medical and Applied Sciences, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia; Institute of Future Farming Systems, CQUniversity, Bruce Hwy, North Rockhampton, Qld 4701, Australia
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Sadgrove NJ. Honest nutraceuticals, cosmetics, therapies, and foods (NCTFs): standardization and safety of natural products. Crit Rev Food Sci Nutr 2021; 62:4326-4341. [PMID: 33480270 DOI: 10.1080/10408398.2021.1874286] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
With the increasing demand for natural products by the consumer in the marketplace it is necessary to see a proportional increase in behind-the-scenes science to ensure that the ideology of safety and honesty, that is justifiably expected by the wider public, is adequately satisfied. It is of essence to have a fair yet firm governance of nutraceuticals, cosmetics, therapies, and foods. However, with increasing sophistications in adulteration and "claim" loopholes that make it easier for adulterated or counterfeited natural products to be "fudged" to meet the pharmacopeia standards, governance protocols must utilize an "identification and authentication" approach that goes beyond the Pharmacopeia standards to help regulate and transparently communicate natural products in the commercial context. While it is becoming a rat race in keeping commercial natural products honest, modern technology can support authenticators and adequately defeat these challenges.
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6
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Phan ADT, Chaliha M, Hong HT, Tinggi U, Netzel ME, Sultanbawa Y. Nutritional Value and Antimicrobial Activity of Pittosporum angustifolium (Gumby Gumby), an Australian Indigenous Plant. Foods 2020; 9:E887. [PMID: 32640660 PMCID: PMC7404462 DOI: 10.3390/foods9070887] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 11/25/2022] Open
Abstract
The indigenous endemic plant P. angustifolium has received attention for nutraceutical and therapeutic applications in Australia. This study investigates for the first time the nutritional value (macro- and micronutrients, minerals, trace elements, polyphenols, carotenoids, saponins and antioxidant capacity) and antimicrobial activity of different botanical parts of P. angustifolium, either collected from the wild or cultivated. Different botanical tissues, geographic location and growing condition (wild vs. cultivated) showed significant (p < 0.05) effects on the tested bioactive compounds, with the leaves having significantly (p < 0.05) higher levels than the stems. Saponins and polyphenols could be identified as the main bioactive compounds in the leaves with up to 4% per dry weight. The extracts of P. angustifolium leaves and stems showed strong antioxidant and antimicrobial activities, especially against Candida albicans. These activities correlated (R2 = 0.64-0.92; p < 0.05) with the levels of polyphenols and saponins, indicating their biologic potential. Findings from this study may provide information for future applications of P. angustifolium in the functional ingredient or nutraceutical industry.
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Affiliation(s)
- Anh Dao Thi Phan
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia; (A.D.T.P.); (M.C.); (H.T.H.)
- Department of Food Technology, Faculty of Agriculture, Can Tho University, Can Tho 94000, Vietnam
| | - Mridusmita Chaliha
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia; (A.D.T.P.); (M.C.); (H.T.H.)
| | - Hung Trieu Hong
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia; (A.D.T.P.); (M.C.); (H.T.H.)
| | - Ujang Tinggi
- Health Support Queensland, Queensland Health Department, Coopers Plans 4108, Australia;
| | - Michael E. Netzel
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia; (A.D.T.P.); (M.C.); (H.T.H.)
| | - Yasmina Sultanbawa
- ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia; (A.D.T.P.); (M.C.); (H.T.H.)
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7
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Sadgrove NJ, Jones GL. From Petri Dish to Patient: Bioavailability Estimation and Mechanism of Action for Antimicrobial and Immunomodulatory Natural Products. Front Microbiol 2019; 10:2470. [PMID: 31736910 PMCID: PMC6834656 DOI: 10.3389/fmicb.2019.02470] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/15/2019] [Indexed: 01/02/2023] Open
Abstract
The new era of multidrug resistance of pathogens against frontline antibiotics has compromised the immense therapeutic gains of the 'golden age,' stimulating a resurgence in antimicrobial research focused on antimicrobial and immunomodulatory components of botanical, fungal or microbial origin. While much valuable information has been amassed on the potency of crude extracts and, indeed, purified compounds there are too many reports that uncritically extrapolate observed in vitro activity to presumed ingestive and/or topical therapeutic value, particularly in the discipline of ethnopharmacology. Thus, natural product researchers would benefit from a basic pharmacokinetic and pharmacodynamic understanding. Furthermore, therapeutic success of complex mixtures or single components derived therefrom is not always proportionate to their MIC values, since immunomodulation can be the dominant mechanism of action. Researchers often fail to acknowledge this, particularly when 'null' activity is observed. In this review we introduce the most up to date theories of oral and topical bioavailability including the metabolic processes affecting xenobiotic biotransformation before and after drugs reach the site of their action in the body. We briefly examine the common methodologies employed in antimicrobial, immunomodulatory and pharmacokinetic research. Importantly, we emphasize the contribution of synergies and/or antagonisms in complex mixtures as they affect absorptive processes in the body and sometimes potentiate activity. Strictly in the context of natural product research, it is important to acknowledge the potential for chemotypic variation within important medicinal plants. Furthermore, polar head space and rotatable bonds give a priori indications of the likelihood of bioavailability of active metabolites. Considering this and other relatively simple chemical insights, we hope to provide the basis for a more rigorous scientific assessment, enabling researchers to predict the likelihood that observed in vitro anti-infective activity will translate to in vivo outcomes in a therapeutic context. We give worked examples of tentative pharmacokinetic assessment of some well-known medicinal plants.
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Affiliation(s)
- Nicholas John Sadgrove
- Pharmaceuticals and Nutraceuticals (PAN) Group, School of Science and Technology, University of New England, Armidale, NSW, Australia
- Jodrell Science Laboratory, Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Graham Lloyd Jones
- Pharmaceuticals and Nutraceuticals (PAN) Group, School of Science and Technology, University of New England, Armidale, NSW, Australia
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Truskewycz A, Shukla R, Ball AS. Phytofabrication of Iron Nanoparticles for Hexavalent Chromium Remediation. ACS OMEGA 2018; 3:10781-10790. [PMID: 30411070 PMCID: PMC6199743 DOI: 10.1021/acsomega.8b00410] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 08/07/2018] [Indexed: 05/08/2023]
Abstract
Hexavalent chromium is a genotoxic and carcinogenic byproduct of a number of industrial processes, which is discharged into the environment in excessive and toxic concentrations worldwide. In this paper, the synthesis of green iron oxide nanoparticles using extracts of four novel plant species [Pittosporum undulatum, Melia azedarach, Schinus molle, and Syzygium paniculatum (var. australe)] using a "bottom-up approach" has been implemented for hexavalent chromium remediation. Nanoparticle characterizations show that different plant extracts lead to the formation of nanoparticles with different sizes, agglomeration tendencies, and shapes but similar amorphous nature and elemental makeup. Hexavalent chromium removal is linked with the particle size and monodispersity. Nanoparticles with sizes between 5 and 15 nm from M. azedarach and P. undulatum showed enhanced chromium removal capacities (84.1-96.2%, respectively) when compared to the agglomerated particles of S. molle and S. paniculatum with sizes between 30 and 100 nm (43.7-58.7%, respectively) in over 9 h. This study has shown that the reduction of iron salts with plant extracts is unlikely to generate vast quantities of stable zero valent iron nanoparticles but rather favor the formation of iron oxide nanoparticles. In addition, plant extracts with higher antioxidant concentrations may not produce nanoparticles with morphologies optimal for pollutant remediation.
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Affiliation(s)
- Adam Truskewycz
- Centre
for Environmental Sustainability and Remediation, School of Science, RMIT University, GPO Box 71, Bundoora, Victoria 3083, Australia
- Nanobiotechnology
Research Laboratory and Centre for Advanced Materials & Industrial
Chemistry, School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3000, Australia
- E-mail: (A.T.)
| | - Ravi Shukla
- Nanobiotechnology
Research Laboratory and Centre for Advanced Materials & Industrial
Chemistry, School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3000, Australia
| | - Andrew S. Ball
- Centre
for Environmental Sustainability and Remediation, School of Science, RMIT University, GPO Box 71, Bundoora, Victoria 3083, Australia
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9
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Coulerie P, Poullain C. New Caledonia: A Hot Spot for Valuable Chemodiversity Part 3: Santalales, Caryophyllales, and Asterids. Chem Biodivers 2016; 13:366-79. [PMID: 26937845 DOI: 10.1002/cbdv.201500101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 04/15/2015] [Indexed: 11/09/2022]
Abstract
The flora of New Caledonia encompasses more than 3000 plant species and an endemism of almost 80%. New Caledonia is even considered as one of the 34 'hot spots' for biodiversity. Considering the current global loss of biodiversity and the fact that several drugs and pesticides become obsolete, there is an urgent need to increase sampling and research on new natural products. In this context, here, we reviewed the chemical knowledge available on New Caledonian native flora from economical perspectives. We expect that a better knowledge of the economic potential of plant chemistry will encourage the plantation of native plants for the development of a sustainable economy which will participate in the conservation of biodiversity. This review is divided into three parts, and the third part which is presented here summarizes the scientific literature related to the chemistry of endemic santalales, caryophyllales, and asterids. We show that the high rate of endemism is correlated with the originality of phytochemicals encountered in New Caledonian plants. A total of 176 original natural compounds have been identified from these plants, whereas many species have not been investigated so far. We also discuss the economic potential of plants and molecules with consideration of their medicinal and industrial perspectives. This review finally highlights several groups, such as Sapotaceae, that are unexplored in New Caledonia despite the high chemical interest in them. These plants are considered to have priority in future chemical investigations.
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Affiliation(s)
- Paul Coulerie
- Institut Agronomique Néo-Calédonien, Connaissance et Amélioration des Agrosystèmes, BP A5, 98848, Noumea Cedex, New Caledonia.,School of Pharmaceutical Sciences, University of Geneva, 30, Quai Ernest-Ansermet, CH-1211, Geneva 4
| | - Cyril Poullain
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Labex LERMIT, 1 Avenue de la Terrasse, FR-91198, Gif-sur-Yvette Cedex.,Stratoz, 5, Rue de la Baume, FR-75008, Paris
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10
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Jayarajan RN, Moon G, Henry D, Obrecht K. Cattle bush: A bush medicine with potential clinical importance in indigenous patients on psychotropics. Aust N Z J Psychiatry 2016; 50:184. [PMID: 26450936 DOI: 10.1177/0004867415607988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
| | - Greta Moon
- Remote Area Mental Health Service, Cairns and Hinterland Health Service, Cairns, QLD, Australia
| | - David Henry
- Remote Area Mental Health Service, Cairns and Hinterland Health Service, Cairns, QLD, Australia
| | - Karin Obrecht
- Remote Area Mental Health Service, Cairns and Hinterland Health Service, Cairns, QLD, Australia
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11
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El Dib RA, Eskander J, Mohamed MA, Mohammed NM. Two new triterpenoid estersaponins and biological activities of Pittosporum tobira 'Variegata' (Thunb.) W. T. Aiton leaves. Fitoterapia 2015; 106:272-9. [PMID: 26363280 DOI: 10.1016/j.fitote.2015.09.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 11/27/2022]
Abstract
Two new triterpenoid estersaponins (1, 2) were isolated from the leaves of Pittosporum tobira 'Variegata' (Thunb.) W. T. Aiton, along with one known saponin (3) and one known flavonoid glycoside (4). Their structures were established by different spectroscopic methods including 1D and 2D NMR, UV, as well as ESI-MS analysis. The investigated 80% aqueous methanol extract showed significant dose dependent inhibition of acetic acid induced abdominal writhing in mice. The n-butanol fraction exerted moderate antimicrobial activity against Staphylococcus aureus and Escherichia coli. In addition, it showed in vitro antioxidant activity with IC50 value (7.3 μg/ml) lower than that of the positive control ascorbic acid (11.2 μg/ml), using DPPH free radical scavenging activity method. Evaluation of its in vitro cytotoxicity showed strong activity against breast carcinoma (MCF-7), hepatocellular carcinoma (HepG2), and colon carcinoma (HCT) cell lines.
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Affiliation(s)
- Rabab A El Dib
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, 11795 Cairo, Egypt; Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
| | | | - Mona A Mohamed
- Department of Medicinal Chemistry, Theodor Bilharz Research Institute, P.O.B. 12411, Giza, Egypt
| | - Nermine M Mohammed
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, 11795 Cairo, Egypt
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12
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Sadgrove NJ, Jones GL. Cytogeography of essential oil chemotypes of Eremophila longifolia F. Muell (Scrophulariaceae). PHYTOCHEMISTRY 2014; 105:43-51. [PMID: 24874947 DOI: 10.1016/j.phytochem.2014.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 04/29/2014] [Accepted: 05/03/2014] [Indexed: 06/03/2023]
Abstract
Previous studies have demonstrated that the widely distributed desert plant Eremophila longifolia has at least six geographically defined essential oil chemotypes. The focus of the present study is to extend and enhance information concerning known chemotypes and to investigate the involvement of cell nuclei ploidy in this variation. Forty field collected specimens of E. longifolia were taken from most of the mainland states of Australia then subjected to hydrodistillation to produce essential oils, which were then chemically characterised. Ploidy was determined using relative fluorescence of cell nuclei stained with propidium iodide, measured in a flow cytometer. Using principal component analysis (PCA), at least three essential oil chemotypes, in addition to the six already described, were identified in the present study. Previously described high yielding essential oil chemotypes were also characterised in terms of diploidy. For the first time diploid populations were identified in New South Wales, correlating with high yielding isomenthone/menthone and karahanaenone chemotypes. Furthermore, the separate diploid population previously described from Western Australia was demonstrated to be the safrole/methyl eugenol type, which is restricted to a small geographic range in far north-west Western Australia (Murchison District). All other chemotypes were shown to be tetraploid, including apparently randomly emerging individuals, representative of chemotypes producing low yields of isomenthone/menthone and karahanaenone similar in composition to the high yielding diploid types.
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Affiliation(s)
- Nicholas John Sadgrove
- Pharmaceuticals and Nutraceuticals Group, Centre for Bioactive Discovery in Health and Ageing, School of Science and Technology, University of New England, Armidale, NSW 2351, Australia.
| | - Graham Lloyd Jones
- Pharmaceuticals and Nutraceuticals Group, Centre for Bioactive Discovery in Health and Ageing, School of Science and Technology, University of New England, Armidale, NSW 2351, Australia.
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Bäcker C, Jenett-Siems K, Bodtke A, Lindequist U. Polyphenolic compounds from the leaves of Pittosporum angustifolium. BIOCHEM SYST ECOL 2014. [DOI: 10.1016/j.bse.2014.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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