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Waly DA, Zeid AHA, Attia HN, Ahmed KA, El-Kashoury ESA, El Halawany AM, Mohammed RS. Comprehensive phytochemical characterization of Persea americana Mill. fruit via UPLC/HR-ESI-MS/MS and anti-arthritic evaluation using adjuvant-induced arthritis model. Inflammopharmacology 2023; 31:3243-3262. [PMID: 37936023 PMCID: PMC10692038 DOI: 10.1007/s10787-023-01365-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/06/2023] [Indexed: 11/09/2023]
Abstract
Persea americana Mill. (avocado fruit) has many health benefits when added to our diet due to various pharmacological activities, such as preventing bone loss and inflammation, modulating immune response and acting as an antioxidant. In the current study, the total ethanol extract (TEE) of the fruit was investigated for in vitro antioxidant and anti-inflammatory activity via DPPH and cyclooxygenase enzyme inhibition. Biological evaluation of the antiarthritic effect of the fruit extract was further investigated in vivo using Complete Freund's Adjuvant (CFA) arthritis model, where the average percentages of body weight change, inhibition of paw edema, basal paw diameter/weight and spleen index were estimated for all animal groups. Inflammatory mediators such as serum IL-6 and TNF-α were also determined, in addition to histopathological examination of the dissected limbs isolated from all experimental animals. Eighty-one metabolites belonging to different chemical classes were detected in the TEE of P. americana fruit via UPLC/HR-ESI-MS/MS. Two classes of lyso-glycerophospholipids; lyso-glycerophosphoethanolamines and lysoglycerophosphocholines were detected for the first time in avocado fruit in the positive mode. The TEE of fruit exhibited significant antioxidant and anti-inflammatory activity in vitro. In vivo anti-arthritic activity of the fruit TEE improved paw parameters, inflammatory mediators and spleen index. Histopathological findings showed marked improvements in the arthritic condition of the excised limbs. Therefore, avocado fruit could be proposed to be a powerful antioxidant and antiarthritic natural product.
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Affiliation(s)
- Dina Atef Waly
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
| | - Aisha Hussein Abou Zeid
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Hanan Naeim Attia
- Medicinal and Pharmaceutical Chemistry Department (Pharmacology Group), National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, P.O. 12211, Giza, Egypt
| | | | - Ali Mahmoud El Halawany
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr-El Ainy Street, Cairo, 11562, Egypt
| | - Reda Sayed Mohammed
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
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Totini CH, Umehara E, Reis IMA, Lago JHG, Branco A. Chemistry and Bioactivity of the Genus Persea - A Review. Chem Biodivers 2023; 20:e202300947. [PMID: 37539983 DOI: 10.1002/cbdv.202300947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/05/2023]
Abstract
This review provides the first comprehensive appraisal of bioactive compounds and their biological activities in Persea species from 1950 to 2023. Relevant articles from reputable databases, including PubMed, Web of Science, Science Direct and Google Scholar were collected, leading to the isolation of about 141 metabolite compounds, mainly flavonoids, terpenoids, fatty alcohols, lignoids, and γ-lactone derivatives. These compounds exhibit diverse biological activities, including insecticidal, antifeedant, nematicidal, antibacterial, antifungal, antiviral, cytotoxic, anti-inflammatory, and antioxidant properties. The review emphasizes the significant chemical and pharmacological potential of different Persea species, encouraging further research in various fields and medicine. Valuable insights into potential applications of Persea plants are provided.
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Affiliation(s)
- Carlos H Totini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580, Santo Andre, SP, Brazil
| | - Eric Umehara
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580, Santo Andre, SP, Brazil
| | - Isabella M A Reis
- Departamento de Saúde, Universidade Estadual de Feira de Santana, 44036-900, Feira de Santana, BA, Brazil
| | - João Henrique G Lago
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580, Santo Andre, SP, Brazil
| | - Alexsandro Branco
- Departamento de Saúde, Universidade Estadual de Feira de Santana, 44036-900, Feira de Santana, BA, Brazil
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Preliminary Studies on Suppression of Important Plant Pathogens by Using Pomegranate and Avocado Residual Peel and Seed Extracts. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8040283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Potential synergistic action of aqueous extracts of pomegranate peel (PP), avocado peel (AP), and avocado seed (AS) wastes isolated by microwave-assisted extraction were assessed in in vitro and in vivo assays as biocontrol agents against several plant pathogenic fungi. The study findings contribute to the utilization of a value-added industrial byproduct and provide significant value in advancing the development of new plant protecting compositions that benefit from the synergistic effects between two important plant species that contain several natural bioactive compounds. More specifically, the in vitro results proved that the use of 100%-pure (PP) extracted waste affected the mycelium growth of Penicillium expansum. Furthermore, mycelium growth of Aspergillus niger was decreased by 10.21% compared to control after 7 days of growth in medium agar containing 100% AP and extracted waste. Moreover, mycelium growth of Botrytis cinerea was affected by equal volume of avocado extraction wastes (50% peel and 50% seed) only at the first 3 days of the inoculation, while at the seventh day of the inoculation there was no effect on the mycelium growth. Equal volumes of the examined wastes showed decreased mycelium growth of Fusarium oxysporum f.sp. lycopersici by 6%, while Rhizoctonia solani mycelium growth was found to be the most sensitive in PP application. In addition, the in vivo assay shown that PP extract suppresses damage of tomato plants caused by R. solani followed by extracted wastes from AP. Based on the research findings, it can be argued that PP and AP extracts can be used as natural antifungals instead of dangerous synthetic antifungals to effectively treat phytopathogens that cause fruit and vegetable losses during cultivation.
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Bonilla-Loaiza AM, Váquiro-Herrera HA, Solanilla-Duque JF. Physicochemical and bioactive properties of avocado ( Persea americana Mill. cv. Lorena). INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2022. [DOI: 10.1515/ijfe-2021-0237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Chemical compounds are of great importance in the food, cosmetic and pharmaceutical industries. Nutritional components, the presence of secondary metabolites with antioxidant and antimicrobial activity, and physicochemical properties of pulp, seed and peel of Lorena avocado cultivars were studied. Antioxidant activity was evaluated by ABTS, DPPH and lipid peroxidation in pulp, seed and peel. 26 extracts was evaluated. The results confirmed that the fruit parts stabilize free radicals and inhibit lipid oxidation processes, with the highest values in seed and peel, due to their content of flavonoids, o-diphenols and phenols. The results of phytochemical screening, antioxidant capacity and antimicrobial activity, showed significant bioprospective advantage for the presence of flavonoids, condensed tannins and total phenols in the seed, peel and pulp of Lorena avocado cultivars. Avocado fruits are rich in bioactive compounds that can be used in functional food applications.
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Affiliation(s)
- Adriana Marcela Bonilla-Loaiza
- Grupo de Investigación Centro de Desarrollo Agroindustrial del Tolima (CEDAGRITOL), Facultad Ingeniería Agronómica , Universidad del Tolima , Ibagué , Colombia
| | - Henry Alexander Váquiro-Herrera
- Grupo de Investigación Centro de Desarrollo Agroindustrial del Tolima (CEDAGRITOL), Facultad Ingeniería Agronómica , Universidad del Tolima , Ibagué , Colombia
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Kumadoh D, Archer MA, Yeboah GN, Kyene MO, Boakye-Yiadom M, Adi-Dako O, Osei-Asare C, Adase E, Appiah AA, Mintah SO. A review on anti-peptic ulcer activities of medicinal plants used in the formulation of Enterica, Dyspepsia and NPK 500 capsules. Heliyon 2021; 7:e08465. [PMID: 34917789 PMCID: PMC8645450 DOI: 10.1016/j.heliyon.2021.e08465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/10/2021] [Accepted: 11/19/2021] [Indexed: 11/03/2022] Open
Abstract
Peptic ulcer disease affects many people globally. With the increasing resistance to some orthodox antibiotics such as Clarithromycin and Metronidazole, it is important that new acceptable, safer and effective therapies are developed to manage this disease. Various herbal medicines have been used traditionally for the remedy of peptic ulcer disease (PUD), however scientific information with regards to their anti-peptic ulcer both in-vivo and in-vitro as well as clinical studies supporting their use is still inadequate. The Centre for Plant Medicine Research, (CPMR) Mampong-Akuapem, Ghana manufactures three herbal Products namely Enterica, Dyspepsia and NPK 500 capsules which are currently used for the remedy of PUD as a triple therapy at its out-patient clinic with promising effects. The aim of this review is to gather information from literature on the anti-ulcer properties, pharmacological, phytochemical constituents and related activities of herbal plants used at the CPMR for formulation of the triple herbal therapy. This review may, provide some scientific bases for the use of Enterica, Dyspepsia and NPK 500 capsules in the management of Peptic ulcer at the CPMR out-patient clinic. METHODS Organization for the review involved the on and/or offline search for information from available literature using electronic data and scientific research information resources such as PubMed, Science Direct and Google scholar. RESULTS In this review, fifteen ethno-medicinal plants used for the formulation of Enterica, Dyspepsia and NPK capsules have been discussed, presenting the description of the plants, composition and pharmacological activity. INTERPRETATION Tables with the summary of reviewed medicinal plants with their anti-ulcer models and inference on possible mechanisms of action were drawn up. The mechanism(s) of action of individual plants and products (Enterica, Dyspepsia and NPK 500 capsules) must be further investigated and established experimentally in-vitro in addition to in-vivo pharmacological and clinical activity studies to confirm their use in the remedy of PUD.
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Affiliation(s)
- Doris Kumadoh
- Department of Pharmaceutics, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
- Department of Production, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Mary-Ann Archer
- Department of Pharmaceutics, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Genevieve N. Yeboah
- Department of Pharmaceutics, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Michael O. Kyene
- Department of Pharmaceutics, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Mavis Boakye-Yiadom
- Department of Clinical Research, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Ofosua Adi-Dako
- Department of Pharmaceutics and Microbiology, School of Pharmacy, University of Ghana, Legon, Accra, Ghana
| | - Christina Osei-Asare
- Department of Pharmaceutics and Microbiology, Central University College, Accra, Ghana
| | - Emmanuel Adase
- Department of Production, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Alfred A. Appiah
- Department of Phytochemistry, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
| | - Susana O. Mintah
- Department of Microbiology, Centre for Plant Medicine Research, Mampong-Akuapem, Ghana
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Lillo A, Carvajal-Caiconte F, Vital W, Silva Junior PI, Paredes-Gamero EJ, Alvear M, Miranda A. Bioactive properties of Persea lingue Ness (Lauraceae) fruit and leaf extracts. BRAZ J BIOL 2021; 83:e248063. [PMID: 34495162 DOI: 10.1590/1519-6984.248063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/15/2021] [Indexed: 11/21/2022] Open
Abstract
Persea lingue Ness is a tree species that lives mainly in temperate forests of south-central Chile. Its leaves are used in ethnomedicine, the fruit is a drupe similar to that of the avocado and has not been studied. The aim of this study was to determine the cytotoxicity in leukemia cell and antibacterial activity, along with some chemical content characteristics of P. lingue fruit and leaf extracts. The antibacterial activity was determined by the inhibition of bacterial growth in liquid medium assay against Gram-positive and Gram-negative bacteria. The leukemia cell lines Kasumi-1 and Jurkat were used to evaluate the cytotoxic activity by using propidium iodide and AlamarBlue assays. Total phenolic, flavonoid, condensed tannin, alkaloid and lipid contents were evaluated in the fruit and in the leaf extracts. The antioxidant activity of both extracts were also elavaluated. Leaf extract presented the highest content of total phenols, condensed tannins and flavonoids, and also the highest antioxidant activity. While the fruit extract has a higher amount of lipids and alkaloids and the high antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus megaterium and Micrococcus luteus. The leaf extract only showed activity against M. luteus. Concerning the cytotoxic activity, only the fruit extract showed cytotoxicity against the cell lines Jurkat and Kasumi-1. P. lingue fruit extract is a potential source of biologically active molecules for the development of new drugs to be used in some types of leukemia, as well as antibacterial agent.
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Affiliation(s)
- A Lillo
- Universidade Federal de São Paulo - UNIFESP, Departamento de Ciência e Tecnologia, São José Dos Campos, SP, Brasil
| | - F Carvajal-Caiconte
- Universidad de La Frontera, Departamento de Ciencias Químicas y Recursos Naturales, Temuco, Chile
| | - W Vital
- Universidade Federal de São Paulo - UNIFESP, Departamento de Biologia Química, Diadema, SP, Brasil
| | - P I Silva Junior
- Instituto Butantan, Centro de Toxinas, Resposta Imune e Sinalização Celular - CeTICS, Centro de Pesquisa, Inovação e Difusão - CEPID, Laboratório de Toxinologia Aplicada - LETA, São Paulo, SP, Brasil
| | - E J Paredes-Gamero
- Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Campo Grande, MS, Brasil
| | - M Alvear
- Universidad de La Frontera, Departamento de Ciencias Químicas y Recursos Naturales, Temuco, Chile
| | - A Miranda
- Universidade Federal de São Paulo - UNIFESP, Departamento de Biofísica, São Paulo, SP, Brasil
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7
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Motawi TMK, William MM, Nooh MM, Abd-Elgawad HM. Amelioration of cyclophosphamide toxicity via modulation of metabolizing enzymes by avocado (Persea americana) extract. J Pharm Pharmacol 2021; 74:367-376. [PMID: 34173661 DOI: 10.1093/jpp/rgab084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 05/13/2021] [Indexed: 11/14/2022]
Abstract
OBJECTIVES Cyclophosphamide (CPA) is highly effective in treating several human tumours and autoimmune disorders; but, it triggers deleterious side effects. Avocado, Persea americana (Mill.), is a widely consumed fruit with pronounced nutritional and medicinal value. Though many studies examined the protective mechanisms of natural products against CPA toxicity, almost none investigated the modulation of CPA metabolism as a potential underlying mechanism for protection. Here, we investigated the modulating effect of avocado extract (AE) on certain CPA metabolizing enzymes and its correlation with the extent of CPA-induced pulmonary toxicity and urotoxicity. METHODS Rats received oral AE (0.9 g/kg body weight/day) 7 days before a single CPA injection (150 mg/kg body weight) and continued AE intake for 2, 7 or 28 days to study three phases of CPA-induced urotoxicity and pulmonary toxicity. KEY FINDINGS CPA acutely elevated then reduced hepatic microsomal cytochrome P450 2B6 (CYP2B6) content and significantly suppressed bladder and lung glutathione-S-transferase activity. Furthermore, CPA elevated lung myeloperoxidase activity, DNA content and hydroxyproline level and bladder blood content. AE ameliorated CPA-induced derangements through suppression of CYP2B6 and myeloperoxidase and augmentation of glutathione-S-transferase activity in CPA-treated rats. CONCLUSIONS AE modulation of CPA metabolizing enzymes and potential anti-inflammatory effect may mitigate CPA-induced toxicity.
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Affiliation(s)
| | - Mira Magdy William
- Biochemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Mohammed Mostafa Nooh
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Biochemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
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Acyl-Acyl Carrier Protein Desaturases and Plant Biotic Interactions. Cells 2021; 10:cells10030674. [PMID: 33803674 PMCID: PMC8002970 DOI: 10.3390/cells10030674] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 11/29/2022] Open
Abstract
Interactions between land plants and other organisms such as pathogens, pollinators, or symbionts usually involve a variety of specialized effectors participating in complex cross-talks between organisms. Fatty acids and their lipid derivatives play important roles in these biological interactions. While the transcriptional regulation of genes encoding acyl–acyl carrier protein (ACP) desaturases appears to be largely responsive to biotic stress, the different monounsaturated fatty acids produced by these enzymes were shown to take active part in plant biotic interactions and were assigned with specific functions intrinsically linked to the position of the carbon–carbon double bond within their acyl chain. For example, oleic acid, an omega-9 monounsaturated fatty acid produced by Δ9-stearoyl–ACP desaturases, participates in signal transduction pathways affecting plant immunity against pathogen infection. Myristoleic acid, an omega-5 monounsaturated fatty acid produced by Δ9-myristoyl–ACP desaturases, serves as a precursor for the biosynthesis of omega-5 anacardic acids that are active biocides against pests. Finally, different types of monounsaturated fatty acids synthesized in the labellum of orchids are used for the production of a variety of alkenes participating in the chemistry of sexual deception, hence favoring plant pollination by hymenopterans.
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de Carvalho SS, Ribeiro LDP, Forim MR, da Silva MFDGF, Bicalho KU, Fernandes JB, Vendramim JD. Avocado kernels, an industrial residue: a source of compounds with insecticidal activity against silverleaf whitefly. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2260-2268. [PMID: 32875452 DOI: 10.1007/s11356-020-10675-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Fruit processing waste, such as kernels (endocarp + seed) of avocado [Persea americana Mill. (Lauraceae)], could be used as raw material in the preparation of botanical insecticides. In light of this potential, this study assessed the insecticidal action of extracts and fractions from kernels of two avocado cultivars (Breda and Margarida) on Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotype B, an important pest species in tropical conditions. Ethanolic and aqueous extracts prepared from kernels of P. americana, regardless of the plant cultivar used, caused promising insecticidal activity to whitefly nymphs. Based on yield in crude extracts [10.32 and 9.85% (w/w), respectively, for cultivars Breda and Margarida], on the bioassay results with crude extracts and on the chemical profiles, the ethanolic extract of kernels of P. americana cv. Breda was chose for the continuation of the study. Thus, the ethanolic extract of kernels of cv. Breda (LC50 = 197.84 ppm and LC90 = 567.19 ppm) was selected and subjected to fractionation by the liquid-liquid partition technique. The hexane and dichloromethane fractions of this extract caused significant mortality of nymphs. The analysis using the ultraviolet (UV) and hydrogen nuclear magnetic resonance (1H NMR) showed the presence of long-chain aliphatic compounds (alkanols or acetogenins of Lauraceae), alkylfurans (or avocadofurans), and unsaturated fatty acids in these fractions, which are possibly related to bioactivity observed in B. tabaci, besides saccharides. The results show that kernels of P. americana are promising sources of compounds with insecticidal action for the control of B. tabaci biotype B, a great opportunity to transform environmental problems into eco-friendly solutions to agriculture.
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Affiliation(s)
- Sheila Salles de Carvalho
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil
| | - Leandro do Prado Ribeiro
- Research Center for Family Agriculture, Agricultural Research and Rural Extension Company of Santa Catarina (CEPAF/EPAGRI), Rua Servidão Ferdinando Ricieri Tusset S/N - Bairro São Cristóvão, Chapecó, Santa Catarina, CEP 89803-904, Brazil.
| | - Moacir Rossi Forim
- Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil
| | | | - Keylla Utherdyany Bicalho
- Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil
| | - João Batista Fernandes
- Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil
| | - José Djair Vendramim
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil
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Arita M, Fuchino H, Kawakami H, Ezaki M, Kawahara N. Characterization of a New Antienterovirus D68 Compound Purified from Avocado. ACS Infect Dis 2020; 6:2291-2300. [PMID: 32567833 DOI: 10.1021/acsinfecdis.0c00404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
One of the major challenges in development of antienterovirus (EV) drugs is in the safety of the drug. Here, we attempted to identify anti-EV compounds from an edible plant extract library and found potent antienterovirus D68 (EV-D68) activity in avocado (Persea americana). The purified identity is determined as 2R,4R-(12Z,15Z)-heneicosa-12,15-diene-1,2,4-triol, named avoenin. Avoenin shows an EC50 of 2.0 μM for EV-D68 (Fermon) infection with CC50 of >150 μM in RD cells by targeting the uncoating step of EV-D68 infection. Resistant mutations of EV-D68 (VP3-V24I, S173P, and S180G) to avoenin confer cross-resistance to pleconaril, an uncoating inhibitor of EV-D68. The inhibitory effect of avoenin is substantially specific to EV-D68 among the EVs. This work reveals avoenin as the identity of anti-EV-D68 activity in avocado and offers insights into development of a novel and effective strategy to overcome EV-D68 infection and its related respiratory diseases.
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Affiliation(s)
- Minetaro Arita
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashi-murayama, Tokyo 208-0011, Japan
| | - Hiroyuki Fuchino
- Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki 305-0843, Japan
| | - Hitomi Kawakami
- Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki 305-0843, Japan
| | - Masami Ezaki
- Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki 305-0843, Japan
| | - Nobuo Kawahara
- Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki 305-0843, Japan
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Jimenez P, Garcia P, Quitral V, Vasquez K, Parra-Ruiz C, Reyes-Farias M, Garcia-Diaz DF, Robert P, Encina C, Soto-Covasich J. Pulp, Leaf, Peel and Seed of Avocado Fruit: A Review of Bioactive Compounds and Healthy Benefits. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1717520] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Paula Jimenez
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Paula Garcia
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Vilma Quitral
- Escuela De Nutricion Y Dietetica, Facultad De Salud, Universidad Santo Tomas, Santiago, Chile
| | - Karla Vasquez
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Claudia Parra-Ruiz
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Marjorie Reyes-Farias
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Diego F Garcia-Diaz
- Departamento De Nutricion, Facultad De Medicina, Universidad De Chile, Santiago, Chile
| | - Paz Robert
- Departamento De Ciencia De Los Alimentos Y Tecnologia Quimica, Facultad De Ciencias Quimicas Y Farmaceuticas, Universidad De Chile, Santiago, Chile
| | - Cristian Encina
- Departamento De Ciencia De Los Alimentos Y Tecnologia Quimica, Facultad De Ciencias Quimicas Y Farmaceuticas, Universidad De Chile, Santiago, Chile
| | - Jessica Soto-Covasich
- Programa de Doctorado en Biotecnologia, Pontificia Universidad Catolica de Valparaiso-Universidad Tecnica Federico Santa Maria
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12
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Bhuyan DJ, Alsherbiny MA, Perera S, Low M, Basu A, Devi OA, Barooah MS, Li CG, Papoutsis K. The Odyssey of Bioactive Compounds in Avocado ( Persea americana) and Their Health Benefits. Antioxidants (Basel) 2019; 8:antiox8100426. [PMID: 31554332 PMCID: PMC6826385 DOI: 10.3390/antiox8100426] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 09/22/2019] [Accepted: 09/23/2019] [Indexed: 12/12/2022] Open
Abstract
Persea americana, commonly known as avocado, has recently gained substantial popularity and is often marketed as a “superfood” because of its unique nutritional composition, antioxidant content, and biochemical profile. However, the term “superfood” can be vague and misleading, as it is often associated with unrealistic health claims. This review draws a comprehensive summary and assessment of research performed in the last few decades to understand the nutritional and therapeutic properties of avocado and its bioactive compounds. In particular, studies reporting the major metabolites of avocado, their antioxidant as well as bioavailability and pharmacokinetic properties, are summarized and assessed. Furthermore, the potential of avocado in novel drug discovery for the prevention and treatment of cancer, microbial, inflammatory, diabetes, and cardiovascular diseases is highlighted. This review also proposes several interesting future directions for avocado research.
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Affiliation(s)
- Deep Jyoti Bhuyan
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Muhammad A Alsherbiny
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia.
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
| | - Saumya Perera
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Mitchell Low
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Amrita Basu
- Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno 62500, Czech.
| | - Okram Abemsana Devi
- Department of Food Science and Nutrition, College of Community Science, Assam Agricultural University, Assam 785013, India.
| | - Mridula Saikia Barooah
- Department of Food Science and Nutrition, College of Community Science, Assam Agricultural University, Assam 785013, India.
| | - Chun Guang Li
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Konstantinos Papoutsis
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland.
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13
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Rodríguez-Sánchez DG, Pacheco A, Villarreal-Lara R, Ramos-González MR, Ramos-Parra PA, Granados-Principal S, Díaz de la Garza RI, García-Rivas G, Hernández-Brenes C. Chemical Profile and Safety Assessment of a Food-Grade Acetogenin-Enriched Antimicrobial Extract from Avocado Seed. Molecules 2019; 24:E2354. [PMID: 31247930 PMCID: PMC6651291 DOI: 10.3390/molecules24132354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 11/18/2022] Open
Abstract
Acetogenins are bioactive fatty acid derivatives found in avocado tissues. Their efficacy as antimicrobials has been documented and initiated interest to use them as replacements of synthetic food additives. The present work focused on evaluation of multiple analytical methodologies for detection and quantification of organic solids present in a food-grade acetogenin-enriched extract (Avosafe®), and on its safety evaluations using bacterial reverse mutation (AMES) tests and acute oral toxicity to rat assays. Results confirmed chemical structures of two acetogenins as present in Avosafe® (AcO-avocadyne-(0) and AcO-avocadiene B-(3)), and together with seven other previously known compounds, quantified 94.74 ± 5.77% w/w of its solids as acetogenins. Safety evaluations indicated that Avosafe® was non-mutagenic and had an acute median lethal oral dose (LD50) to rats higher than the maximum concentration tested (>2000 mg·kg-1), with no signs of macroscopic abnormalities in organs. Mean body weight and hematological and biochemical parameters were normal after 14 days of a single oral dose of 2000 mg·kg-1. The results advance scientific information on the safety of avocado seed acetogenins and also generate new knowledge on profiles and concentrations of individual acetogenins found in avocado tissues (seed, pulp, and leaves) and in Avosafe®.
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Affiliation(s)
- Dariana G Rodríguez-Sánchez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
| | - Adriana Pacheco
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
| | - Raúl Villarreal-Lara
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
| | - Martín R Ramos-González
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Medicina Cardiovascular y Metabolómica. Batallón de San Patricio, 112 Col. Real de San Agustín, San Pedro Garza García, NL 66278, Mexico
| | - Perla A Ramos-Parra
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
| | - Sergio Granados-Principal
- UGC de Oncología Médica, Hospital Universitario de Jaén, Avenida del Ejército Español 10, 23007 Jaén, Spain
- GENYO. Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, PTS Granada-Avenida de la Ilustración 114, 18016 Granada, Spain
| | - Rocío I Díaz de la Garza
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
| | - Gerardo García-Rivas
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico
- Tecnologico de Monterrey, Medicina Cardiovascular y Metabolómica. Batallón de San Patricio, 112 Col. Real de San Agustín, San Pedro Garza García, NL 66278, Mexico
| | - Carmen Hernández-Brenes
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico.
- Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Ave. Eugenio Garza Sada 2501, Monterrey, NL 64849, Mexico.
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14
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Villarreal-Lara R, Rodríguez-Sánchez DG, Díaz De La Garza RI, García-Cruz MI, Castillo A, Pacheco A, Hernández-Brenes C. Purified avocado seed acetogenins: Antimicrobial spectrum and complete inhibition of Listeria monocytogenes in a refrigerated food matrix. CYTA - JOURNAL OF FOOD 2019. [DOI: 10.1080/19476337.2019.1575908] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Raúl Villarreal-Lara
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey, N.L., México
| | | | | | | | - Alejandro Castillo
- Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - Adriana Pacheco
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey, N.L., México
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15
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Loh ZH, Lim YY. Drying effects on antioxidant activity, enzyme activity, and phytochemicals of avocado (
Persea americana
) leaves. J FOOD PROCESS PRES 2018. [DOI: 10.1111/jfpp.13667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhi Hung Loh
- School of Science Monash University Malaysia Petaling Jaya Malaysia
| | - Yau Yan Lim
- School of Science Monash University Malaysia Petaling Jaya Malaysia
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16
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Yang S, Hallett I, Rebstock R, Oh HE, Kam R, Woolf AB, Wong M. Cellular Changes in “Hass” Avocado Mesocarp During Cold-Pressed Oil Extraction. J AM OIL CHEM SOC 2018. [DOI: 10.1002/aocs.12019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shuo Yang
- Massey Institute of Food Science and Technology; Massey University, Dairy Flat Highway; Auckland 0632 New Zealand
| | - Ian Hallett
- The New Zealand Institute for Plant & Food Research Limited; Mt Albert Research Centre, Mt Albert Road; Auckland 1025 New Zealand
| | - Ria Rebstock
- The New Zealand Institute for Plant & Food Research Limited; Mt Albert Research Centre, Mt Albert Road; Auckland 1025 New Zealand
| | - Hyunah E. Oh
- Massey Institute of Food Science and Technology; Massey University, Dairy Flat Highway; Auckland 0632 New Zealand
| | - Rothman Kam
- School of Applied Science; Auckland University of Technology, Wellesley Street; Auckland 1010 New Zealand
| | - Allan B. Woolf
- The New Zealand Institute for Plant & Food Research Limited; Mt Albert Research Centre, Mt Albert Road; Auckland 1025 New Zealand
| | - Marie Wong
- Massey Institute of Food Science and Technology; Massey University, Dairy Flat Highway; Auckland 0632 New Zealand
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17
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Persea americana Glycolic Extract: In Vitro Study of Antimicrobial Activity against Candida albicans Biofilm and Cytotoxicity Evaluation. ScientificWorldJournal 2015; 2015:531972. [PMID: 26605376 PMCID: PMC4641960 DOI: 10.1155/2015/531972] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/07/2015] [Accepted: 10/15/2015] [Indexed: 11/18/2022] Open
Abstract
This study evaluated the antifungal activity of Persea americana extract on Candida albicans biofilm and its cytotoxicity in macrophage culture (RAW 264.7). To determine the minimum inhibitory concentration (MIC), microdilution in broth (CLSI M27-S4 protocol) was performed. Thereafter, the concentrations of 12.5, 25, 50, 100, and 200 mg/mL (n = 10) with 5 min exposure were analyzed on mature biofilm in microplate wells for 48 h. Saline was used as control (n = 10). After treatment, biofilm cells were scraped off and dilutions were plated on Sabouraud dextrose agar. After incubation (37°C/48 h), the values of colony forming units per milliliter (CFU/mL) were converted to log10 and analyzed (ANOVA and Tukey test, 5%). The cytotoxicity of the P. americana extract was evaluated on macrophages by MTT assay. The MIC of the extract was 6.25 mg/mL and with 12.5 mg/mL there was elimination of 100% of planktonic cultures. Regarding the biofilms, a significant reduction (P < 0.001) of the biofilm at concentrations of 50 (0.580 ± 0.209 log10), 100 (0.998 ± 0.508 log10), and 200 mg/mL (1.093 ± 0.462 log10) was observed. The concentrations of 200 and 100 mg/mL were cytotoxic for macrophages, while the concentrations of 50, 25, and 12.5 mg/mL showed viability higher than 55%.
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18
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Rodríguez-López CE, Hernández-Brenes C, Díaz de la Garza RI. A targeted metabolomics approach to characterize acetogenin profiles in avocado fruit (Persea americana Mill.). RSC Adv 2015. [DOI: 10.1039/c5ra22854a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lauraceous acetogenins are fatty acid derivatives with an odd-carbon aliphatic chain found in avocado (Persea americana Mill.).
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19
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Rodriguez-Sanchez DG, Flores-García M, Silva-Platas C, Rizzo S, Torre-Amione G, De la Peña-Diaz A, Hernández-Brenes C, García-Rivas G. Isolation and chemical identification of lipid derivatives from avocado (Persea americana) pulp with antiplatelet and antithrombotic activities. Food Funct 2015; 6:193-203. [DOI: 10.1039/c4fo00610k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bioassay-guided isolation of acetogenins from avocado pulp within vitroantiplatelet aggregation andin vivoantithrombotic effects in CD1 mice.
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Affiliation(s)
| | - Mirthala Flores-García
- Departamento de Biología Molecular
- Instituto Nacional de Cardiología Ignacio Chavéz
- México City
- Mexico
| | - Christian Silva-Platas
- Cátedra de Cardiología y Medicina Vascular
- Escuela de Medicina
- Tecnológico de Monterrey
- Monterrey
- Mexico
| | - Sheryl Rizzo
- Cátedra de Cardiología y Medicina Vascular
- Escuela de Medicina
- Tecnológico de Monterrey
- Monterrey
- Mexico
| | - Guillermo Torre-Amione
- Cátedra de Cardiología y Medicina Vascular
- Escuela de Medicina
- Tecnológico de Monterrey
- Monterrey
- Mexico
| | - Aurora De la Peña-Diaz
- Departamento de Biología Molecular
- Instituto Nacional de Cardiología Ignacio Chavéz
- México City
- Mexico
- Departamento de Farmacología
| | - Carmen Hernández-Brenes
- Departamento de Biotecnología y Alimentos
- Escuela de Biotecnología e Ingeniería de Alimentos
- Tecnológico de Monterrey
- Monterrey
- Mexico
| | - Gerardo García-Rivas
- Cátedra de Cardiología y Medicina Vascular
- Escuela de Medicina
- Tecnológico de Monterrey
- Monterrey
- Mexico
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20
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Quintanilla-Licea R, Mata-Cárdenas BD, Vargas-Villarreal J, Bazaldúa-Rodríguez AF, Kavimngeles-Hernández I, Garza-González JN, Hernández-García ME. Antiprotozoal activity against Entamoeba histolytica of plants used in northeast Mexican traditional medicine. Bioactive compounds from Lippia graveolens and Ruta chalepensis. Molecules 2014; 19:21044-65. [PMID: 25517343 PMCID: PMC6271573 DOI: 10.3390/molecules191221044] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 11/11/2022] Open
Abstract
Amoebiasis caused by Entamoeba histolytica is associated with high morbidity and mortality is becoming a major public health problem worldwide, especially in developing countries. Because of the side-effects and the resistance that pathogenic protozoa build against the standard antiparasitic drugs, e.g., metronidazole, much recent attention has been paid to plants used in traditional medicine around the world in order to find new antiprotozoal agents. We collected 32 plants used in Northeast Mexican traditional medicine and the methanolic extracts of these species were screened for antiprotozoal activity against E. histolytica trophozoites using in vitro tests. Only 18 extracts showed a significant inhibiting activity and among them six plant extracts showed more than 80% growth inhibition against E. histolytica at a concentration of 150 µg/mL and the IC50 values of these extracts were determined. Lippia graveolens Kunth and Ruta chalepensis Pers. showed the more significant antiprotozoal activity (91.54% and 90.50% growth inhibition at a concentration of 150 µg/mL with IC50 values of 59.14 and 60.07 µg/mL, respectively). Bioassay-guided fractionation of the methanolic extracts from these two plants afforded carvacrol (1) and chalepensin (2), respectively, as bioactive compounds with antiprotozoal activity.
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Affiliation(s)
- Ramiro Quintanilla-Licea
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, C.P. 66451 Nuevo León, Mexico.
| | - Benito David Mata-Cárdenas
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, C.P. 66451 Nuevo León, Mexico.
| | - Javier Vargas-Villarreal
- Laboratorio de Bioquímica y Biología Celular, Centro de Investigaciones Biomédicas del Noreste (CIBIN), Dos de abril esquina con San Luis Potosí, C.P. 64720 Monterrey, Mexico.
| | - Aldo Fabio Bazaldúa-Rodríguez
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, C.P. 66451 Nuevo León, Mexico.
| | - Isvar Kavimngeles-Hernández
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, C.P. 66451 Nuevo León, Mexico.
| | - Jesús Norberto Garza-González
- Laboratorio de Bioquímica y Biología Celular, Centro de Investigaciones Biomédicas del Noreste (CIBIN), Dos de abril esquina con San Luis Potosí, C.P. 64720 Monterrey, Mexico.
| | - Magda Elizabeth Hernández-García
- Laboratorio de Bioquímica y Biología Celular, Centro de Investigaciones Biomédicas del Noreste (CIBIN), Dos de abril esquina con San Luis Potosí, C.P. 64720 Monterrey, Mexico.
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21
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Antibacterial activity of defensin PaDef from avocado fruit (Persea americana var. drymifolia) expressed in endothelial cells against Escherichia coli and Staphylococcus aureus. BIOMED RESEARCH INTERNATIONAL 2013; 2013:986273. [PMID: 24319695 PMCID: PMC3844270 DOI: 10.1155/2013/986273] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 09/04/2013] [Indexed: 12/25/2022]
Abstract
Antimicrobial therapy is a useful tool to control infectious diseases in general and rising antibiotic resistant microorganisms in particular. Alternative strategies are desirable, and antimicrobial peptides (AMP) represent attractive control agents. Mexican avocado (Persea americana var. drymifolia) is used in traditional medicine; however, the AMP production has not been reported in this plant. We obtained a cDNA library from avocado fruit and clone PaDef was identified, which has a cDNA (249 bp) encoding a protein (78 aa) homologous with plant defensins (>80%). We expressed the defensin PaDef cDNA (pBME3) in the bovine endothelial cell line BVE-E6E7. Polyclonal and clonal populations were obtained and their activity was evaluated against Escherichia coli, Staphylococcus aureus, and Candida albicans. E. coli viability was inhibited with 100 μg/mL of total protein from clones (>55%). Also, S. aureus viability was inhibited from 50 μg/mL total protein (27–38%) but was more evident at 100 μg/mL (52–65%). This inhibition was higher than the effect showed by polyclonal population (~23%). Finally, we did not detect activity against C. albicans. These results are the first report that shows antimicrobial activity of a defensin produced by avocado and suggest that this AMP could be used in the control of pathogens.
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22
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Rodríguez-Sánchez D, Silva-Platas C, Rojo RP, García N, Cisneros-Zevallos L, García-Rivas G, Hernández-Brenes C. Activity-guided identification of acetogenins as novel lipophilic antioxidants present in avocado pulp (Persea americana). J Chromatogr B Analyt Technol Biomed Life Sci 2013; 942-943:37-45. [PMID: 24211333 DOI: 10.1016/j.jchromb.2013.10.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 09/06/2013] [Accepted: 10/10/2013] [Indexed: 12/23/2022]
Abstract
Avocado fruit is a rich source of health-related lipophilic phytochemicals such as monounsaturated fatty acids, tocopherols, carotenes, acetogenins and sterols. However, limited information is available on the contribution of specific phytochemicals to the overall antioxidant capacity (AOC) of the fruit. Centrifugal partition chromatography was used as fractionation tool, guided by an in vitro chemical assay of oxygen radical absorbance capacity (ORAC). Subsequent experiments focused on isolation and characterization of the chemical nature of the main contributors to lipophilic AOC of avocado pulp. ORAC values obtained for acetogenins were contrasted with results from an isolated kidney mitochondria membrane lipid peroxidation bioassay. The present study established that lipophilic AOC of the pulp was significantly higher than its hydrophilic AOC. Our results confirmed the presence of acetogenins in the fractions with highest lipophilic AOC, and for the first time linked them as contributors to lipophilic-ORAC values. Further HPLC-PDA/MS-TOF analysis led to structural elucidation of two novel acetogenins, not previously reported as present in avocado pulp, along with five already known related-compounds. Antioxidant properties observed for avocado pulp acetogenins by the ORAC assay suggested that, in the presence of an emulsifying agent, acetogenins could serve as novel lipophilic antioxidants in a food matrix. Results from isolated mitochondria lipid peroxidation bioassay, indicated that L-ORAC values which may have relevance for food matrix applications, should not be interpreted to have a direct relevance in health-related claims, compounds need to be evaluated considering the complexity of biological systems.
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Affiliation(s)
- Dariana Rodríguez-Sánchez
- Department of Biotechnology and Food Engineering, School of Biotechnology and Food, Tecnológico de Monterrey-Campus Monterrey, E. Garza Sada 2501 Sur, C.P. 64849, Monterrey, NL, Mexico; Endowed Chair in Cardiology. School of Medicine. Tecnológico de Monterrey-Campus Monterrey, Monterrey, NL, Mexico
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23
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Lourith N, Kanlayavattanakul M. Hair loss and herbs for treatment. J Cosmet Dermatol 2013; 12:210-22. [DOI: 10.1111/jocd.12051] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2013] [Indexed: 01/05/2023]
Affiliation(s)
- Nattaya Lourith
- School of Cosmetic Science; Mae Fah Luang University; Chiang Rai Thailand
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24
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Rodríguez-Sánchez DG, Pacheco A, García-Cruz MI, Gutiérrez-Uribe JA, Benavides-Lozano JA, Hernández-Brenes C. Isolation and structure elucidation of avocado seed (Persea americana) lipid derivatives that inhibit Clostridium sporogenes endospore germination. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7403-11. [PMID: 23829335 DOI: 10.1021/jf401407s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Avocado fruit extracts are known to exhibit antimicrobial properties. However, the effects on bacterial endospores and the identity of antimicrobial compounds have not been fully elucidated. In this study, avocado seed extracts were tested against Clostridium sporogenes vegetative cells and active endospores. Bioassay-guided purification of a crude extract based on inhibitory properties linked antimicrobial action to six lipid derivatives from the family of acetogenin compounds. Two new structures and four compounds known to exist in nature were identified as responsible for the activity. Structurally, most potent molecules shared features of an acetyl moiety and a trans-enone group. All extracts produced inhibition zones on vegetative cells and active endospores. Minimum inhibitory concentrations (MIC) of isolated molecules ranged from 7.8 to 15.6 μg/mL, and bactericidal effects were observed for an enriched fraction at 19.5 μg/mL. Identified molecules showed potential as natural alternatives to additives and antibiotics used by the food and pharmaceutical industries to inhibit Gram-positive spore-forming bacteria.
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Affiliation(s)
- Dariana Graciela Rodríguez-Sánchez
- Department of Biotechnology and Food Engineering, School of Biotechnology and Food, Tecnológico de Monterrey-Campus Monterrey, Monterrey, NL, México
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25
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Yasir M, Das S, Kharya MD. The phytochemical and pharmacological profile of Persea americana Mill. Pharmacogn Rev 2012; 4:77-84. [PMID: 22228945 PMCID: PMC3249906 DOI: 10.4103/0973-7847.65332] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 03/20/2010] [Accepted: 07/10/2010] [Indexed: 12/26/2022] Open
Abstract
Over the past decades, herbal medicine has become a thing of global significance with medicinal and economic implications. Wide spread use of herbs throughout the globe has raised serious concerns over its quality, safety, and efficacy. Thus, exact scientific assessment has become a precondition for acceptance of herbal health claims. Persea americana Mill. (avocado) is a tree, native to central America, cultivated in tropical and subtropical climates around the world, belonging to the family Lauraceae, is widely used in Ayurveda and evidence-based phototherapy. There are 3 principal races or groups of avocado: Mexican, Guatemalan, and West Indian named for the areas where they were originally cultivated. The plant is used in traditional medicine for the treatment of various ailments, such as monorrhagia, hypertension, stomach ache, bronchitis, diarrhea, and diabetes. Peptone, b-galactoside, glycosylated abscisic acid, alkaloids, cellulose, polygalacto urease, polyuronoids, cytochrome P-450, and volatile oils are reported to be present in this plant. Biotechnologic approaches show that modified MS medium supplemented with 1.0 mg benzyladenine/L, 0-1mg Indole Butyric Acid/L, 0.1 mg Gibberalic Acid 3/L was optimum for adventitious shoot development. In the present review, an effort has been made to study the different aspects of P. americana Mill.
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Affiliation(s)
- Mohammad Yasir
- Department of Pharmacy, Malhotra College, Bhopal, Madhya Pradesh, India
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26
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Gamedze MP, Maseko RB, Chigondo F, Nkambule CM. Serendipitous synthesis of 3-hydroxy tetrahydrofurans from tin catalyzed sulfonylation of acyclic 1,2,4-triols. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.110] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Shukla P, Walia S, Ahluwalia V, Parmar BS, Nair MG. Activity of Alkanediol Alkanoates against Pathogenic Plant Fungi Rhizoctonia solani and Sclerotium rolfsii. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Thirty known dialkanoates of ethylene, propylene and diethylene glycols were synthesized by reacting the glycols with acyl chlorides and their structures confirmed by IR, NMR and mass spectral analyses. They exhibited significant antifungal activity against two phytopathogenic fungi Rhizoctonia solani Kuehn and Sclerotium rolfsii Sacc in a dose dependent manner. Propylene glycol dipentanoate was the most active against R. solani. followed by diethylene glycol dibutanoate and ethylene glycol dibutanoate. Against S. rolfsii ethylene glycol diheptanoate was found to be most active followed by diethylene glycol diisobutanoate As compared to the standard reference benomyl (EC50 5.16 μg/mL), the potential alkanediol dialkanoates showed EC50 in the range of 33 – 60 μg/mL.
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Affiliation(s)
- Paraj Shukla
- Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India
- Present address: Chair of Date Palm Research, King Saud University, Riyadh, Saudi Arabia
| | - Suresh Walia
- Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India
| | - Vivek Ahluwalia
- Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India
| | - Balraj S. Parmar
- Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, India
| | - Muraleedharan G. Nair
- Bioactive Natural Products Laboratory, Department of Horticulture, Michigan State University, East Lansing, MI, USA
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Lu YC, Chang HS, Peng CF, Lin CH, Chen IS. Secondary metabolites from the unripe pulp of Persea americana and their antimycobacterial activities. Food Chem 2012; 135:2904-9. [PMID: 22980888 DOI: 10.1016/j.foodchem.2012.07.073] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/08/2012] [Accepted: 07/12/2012] [Indexed: 10/28/2022]
Abstract
The fruits of Persea americana (Avocado) are nowadays used as healthy fruits in the world. Bioassay-guided fractionation of the active ethyl acetate soluble fraction has led to the isolation of five new fatty alcohol derivatives, avocadenols A-D (1-4) and avocadoin (5) from the unripe pulp of P. americana, along with 12 known compounds (6-17). These structures were elucidated by spectroscopic analysis. Among the isolates, avocadenol A (1), avocadenol B (2), (2R,4R)-1,2,4-trihydroxynonadecane (6), and (2R,4R)-1,2,4-trihydroxyheptadec-16-ene (7) showed antimycobacterial activity against Mycobacterium tuberculosis H(37)R(V)in vitro, with MIC values of 24.0, 33.8, 24.9, and 35.7 μg/ml, respectively.
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Affiliation(s)
- Ying-Chen Lu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan 807, Taiwan, ROC
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29
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Lee TH, Tsai YF, Huang TT, Chen PY, Liang WL, Lee CK. Heptadecanols from the leaves of Persea americana var. americana. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.11.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Aliphatic acetogenin constituents of avocado fruits inhibit human oral cancer cell proliferation by targeting the EGFR/RAS/RAF/MEK/ERK1/2 pathway. Biochem Biophys Res Commun 2011; 409:465-9. [PMID: 21596018 DOI: 10.1016/j.bbrc.2011.05.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 05/03/2011] [Indexed: 11/20/2022]
Abstract
Avocado (Persea americana) fruits are consumed as part of the human diet and extracts have shown growth inhibitory effects in various types of human cancer cells, although the effectiveness of individual components and their underlying mechanism are poorly understood. Using activity-guided fractionation of the flesh of avocado fruits, a chloroform-soluble extract (D003) was identified that exhibited high efficacy towards premalignant and malignant human oral cancer cell lines. From this extract, two aliphatic acetogenins of previously known structure were isolated, compounds 1 [(2S,4S)-2,4-dihydroxyheptadec-16-enyl acetate] and 2 [(2S,4S)-2,4-dihydroxyheptadec-16-ynyl acetate]. In this study, we show for the first time that the growth inhibitory efficacy of this chloroform extract is due to blocking the phosphorylation of EGFR (Tyr1173), c-RAF (Ser338), and ERK1/2 (Thr202/Tyr204) in the EGFR/RAS/RAF/MEK/ERK1/2 cancer pathway. Compounds 1 and 2 both inhibited phosphorylation of c-RAF (Ser338) and ERK1/2 (Thr202/Tyr204). Compound 2, but not compound 1, prevented EGF-induced activation of the EGFR (Tyr1173). When compounds 1 and 2 were combined they synergistically inhibited c-RAF (Ser338) and ERK1/2 (Thr202/Tyr204) phosphorylation, and human oral cancer cell proliferation. The present data suggest that the potential anticancer activity of avocado fruits is due to a combination of specific aliphatic acetogenins that target two key components of the EGFR/RAS/RAF/MEK/ERK1/2 cancer pathway.
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31
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Degenhardt AG, Hofmann T. Bitter-tasting and kokumi-enhancing molecules in thermally processed avocado (Persea americana Mill.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:12906-12915. [PMID: 21080628 DOI: 10.1021/jf103848p] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Sequential application of solvent extraction and RP-HPLC in combination with taste dilution analyses (TDA) and comparative TDA, followed by LC-MS and 1D/2D NMR experiments, led to the discovery of 10 C(17)-C(21) oxylipins with 1,2,4-trihydroxy-, 1-acetoxy-2,4-dihydroxy-, and 1-acetoxy-2-hydroxy-4-oxo motifs, respectively, besides 1-O-stearoyl-glycerol and 1-O-linoleoyl-glycerol as bitter-tasting compounds in thermally processed avocado (Persea americana Mill.). On the basis of quantitative data, dose-over-threshold (DoT) factors, and taste re-engineering experiments, these phytochemicals, among which 1-acetoxy-2-hydroxy-4-oxo-octadeca-12-ene was found with the highest taste impact, were confirmed to be the key contributors to the bitter off-taste developed upon thermal processing of avocado. For the first time, those C(17)-C(21) oxylipins exhibiting a 1-acetoxy-2,4-dihydroxy- and a 1-acetoxy-2-hydroxy-4-oxo motif, respectively, were discovered to induce a mouthfulness (kokumi)-enhancing activity in sub-bitter threshold concentrations.
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32
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Rosenblat G, Meretski S, Segal J, Tarshis M, Schroeder A, Zanin-Zhorov A, Lion G, Ingber A, Hochberg M. Polyhydroxylated fatty alcohols derived from avocado suppress inflammatory response and provide non-sunscreen protection against UV-induced damage in skin cells. Arch Dermatol Res 2010; 303:239-46. [PMID: 20978772 DOI: 10.1007/s00403-010-1088-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 09/29/2010] [Accepted: 10/04/2010] [Indexed: 12/13/2022]
Abstract
Exposing skin to ultraviolet (UV) radiation contributes to photoaging and to the development of skin cancer by DNA lesions and triggering inflammatory and other harmful cellular cascades. The present study tested the ability of unique lipid molecules, polyhydroxylated fatty alcohols (PFA), extracted from avocado, to reduce UVB-induced damage and inflammation in skin. Introducing PFA to keratinocytes prior to their exposure to UVB exerted a protective effect, increasing cell viability, decreasing the secretion of IL-6 and PGE(2), and enhancing DNA repair. In human skin explants, treating with PFA reduced significantly UV-induced cellular damage. These results support the idea that PFA can play an important role as a photo-protective agent in UV-induced skin damage.
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33
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Kulkarni P, Paul R, Ganesh N. In vitro evaluation of genotoxicity of avocado (Persea americana) fruit and leaf extracts in human peripheral lymphocytes. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2010; 28:172-187. [PMID: 20859823 DOI: 10.1080/10590501.2010.504979] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Persea americana is much sought after both for the nutritional value of its fruit and the medicinal values of its various plant parts. A chromosomal aberration assay was undertaken to evaluate the potential genotoxicity of crude extracts from avocado fruits and leaves. Chromosomal aberrations were observed in cultured human peripheral lymphocytes exposed to separately increasing concentrations of 50% methanolic extracts of Persea americana fruit and leaves. The groups exposed to leaf and fruit extracts, respectively, showed a concentration-dependent increase in chromosomal aberrations as compared to that in a control group. The mean percentage total aberrant metaphases at 100 mg/kg, 200 mg/kg, and 300 mg/kg concentrations of leaf extract were found respectively to be 58 ± 7.05, 72 ± 6.41, and 78 ± 5.98, which were significantly higher (p < 0.0001 each) than that in the control group (6 ± 3.39). The mean percentage total aberrant metaphases at 100 mg/kg, 200 mg/kg, and 300 mg/kg concentrations of fruit extract were found to be 18 ± 5.49, 40 ± 10.00, and 52 ± 10.20, respectively, which were significantly higher (p = 0.033, p < 0.0001, and p < 0.0001, respectively) than that for control (6 ± 3.39). Acrocentric associations and premature centromeric separation were the two most common abnormalities observed in both the exposed groups. The group exposed to leaf extracts also showed a significant number of a variety of other structural aberrations, including breaks, fragments, dicentrics, terminal deletion, minutes, and Robertsonian translocations. The group exposed to leaf extract showed higher frequency of all types of aberrations at equal concentrations as compared to the group exposed to fruit extract.
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Affiliation(s)
- Paresh Kulkarni
- Department of Research, Jawaharlal Nehru Cancer Hospital & Research Centre, Bhopal, India
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34
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Chiral building blocks from d-xylose and their application in synthesis of avocadotriol monoacetate. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Abe F, Nagafuji S, Okawa M, Kinjo J, Akahane H, Ogura T, Martinez-Alfaro MA, Reyes-Chilpa R. Trypanocidal constituents in plants 5. Evaluation of some Mexican plants for their trypanocidal activity and active constituents in the seeds of Persea americana. Biol Pharm Bull 2005; 28:1314-7. [PMID: 15997123 DOI: 10.1248/bpb.28.1314] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Crude extracts of Mexican medicinal plants were screened for trypanocidal activity against Trypanosoma cruzi, which is the etiological agent for Chagas' disease, one of the most serious protozoan diseases in Latin America. There were 71 kinds of methanolic and other organic extracts from 65 plants, which were newly examined by a preliminary screening test to observe immobilization of epimastigotes and trypomastigotes of T. cruzi in vitro. The MeOH extract of seeds of Persea americana (avocado) showed moderate activity against epimastigotes. In order to identify the principal compounds for the activity, the MeOH extract was subjected to bioassay-guided fractionation. From the active fractions, six 1,2,4-trihydroxyheptadecane derivatives and two 1,2,4-trihydroxynonadecane derivatives including a new one were isolated. These compounds showed moderate activity against epimastigotes and trypomastigotes.
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Affiliation(s)
- Fumiko Abe
- Faculty of Pharmaceutical Sciences, Fukuoka University, Japan.
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36
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Lu QY, Arteaga JR, Zhang Q, Huerta S, Go VLW, Heber D. Inhibition of prostate cancer cell growth by an avocado extract: role of lipid-soluble bioactive substances. J Nutr Biochem 2005; 16:23-30. [PMID: 15629237 DOI: 10.1016/j.jnutbio.2004.08.003] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2004] [Revised: 08/14/2004] [Accepted: 08/19/2004] [Indexed: 01/17/2023]
Abstract
Although the avocado is known as a rich source of monounsaturated fatty acids, there has been far less attention given to its content of other bioactive substances including carotenoids, which might contribute to cancer preventive properties similar to those attributed to other fruits and vegetables. The yellow-green color of the avocado prompted us to study the carotenoid content of this fruit using established methods in our laboratory. The California Hass avocado (Persea americana Mill.) was selected for study, because it is the most commonly consumed variety in the southwest United States. These avocados were found to contain the highest content of lutein among commonly eaten fruits as well as measurable amounts of related carotenoids (zeaxanthin, alpha-carotene, and beta-carotene). Lutein accounted for 70% of the measured carotenoids, and the avocado also contained significant quantities of vitamin E. An acetone extract of avocado containing these carotenoids and tocopherols was shown to inhibit the growth of both androgen-dependent (LNCaP) and androgen-independent (PC-3) prostate cancer cell lines in vitro. Incubation of PC-3 cells with the avocado extract led to G(2)/M cell cycle arrest accompanied by an increase in p27 protein expression. Lutein alone did not reproduce the effects of the avocado extract on cancer cell proliferation. In common with other colorful fruits and vegetables, the avocado contains numerous bioactive carotenoids. Because the avocado also contains a significant amount of monounsaturated fat, these bioactive carotenoids are likely to be absorbed into the bloodstream, where in combination with other diet-derived phytochemicals they may contribute to the significant cancer risk reduction associated with a diet of fruits and vegetables.
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Affiliation(s)
- Qing-Yi Lu
- Center for Human Nutrition, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1742, USA
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37
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Peraza-Sánchez SR, Chan-Che EO, Ruiz-Sánchez E. Screening of Yucatecan plant extracts to control Colletotrichum gloeosporioides and isolation of a New Pimarene from Acacia pennatula. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:2429-2432. [PMID: 15796574 DOI: 10.1021/jf040422i] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Screening of seven Yucatecan plant extracts to look for fungicidal activity for the control of Colletotrichum gloeosporioides was carried out. Bioassay-directed purification of the root extract of one of the most active plants, Acacia pennatula, resulted in the isolation of the new compound 15,16-dihydroxypimar-8(14)-en-3-one (1), which in the in vitro bioassay "agar dilution" was shown to have growth, sporulation, and germination inhibition activity. Nuclear magnetic resonance spectroscopic techniques were used to elucidate its structure.
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Affiliation(s)
- Sergio R Peraza-Sánchez
- Centro de Investigación Científica de Yucatán (CICY), 43 #130 Chuburná, 97200 Mérida, Yucatán, Mexico.
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38
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Wang X, Beno-Moualem D, Kobiler I, Leikin-Frenkel A, Lichter A, Prusky D. Expression of Delta(12) fatty acid desaturase during the induced accumulation of the antifungal diene in avocado fruits. MOLECULAR PLANT PATHOLOGY 2004; 5:575-85. [PMID: 20565631 DOI: 10.1111/j.1364-3703.2004.00249.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
SUMMARY The preformed (Z,Z)-1-acetoxy-2-hydroxy-4-oxo-heneicosa-12,15-diene (AFD) is the most active antifungal compound in avocado; it affects the quiescence of Colletotrichum gloeosporioides in unripe fruit. One of the genes encoding Delta(12) fatty acid desaturase (avfad12) was hypothesized to take part in the biosynthesis of AFD, and its expression pattern and enzymatic activity were determined in relation to the content of AFD. Using avfad12-3 as a probe, high levels of expression were detected in young fruits and leaves, where the level of AFD was highest. In contrast, Northern analysis of RNA from mature leaves and fruits showed no transcripts from the avfad12 gene family and lower AFD content. The transcripts from the avfad12 gene family, the enzymatic activity of Delta(12) fatty acid desaturase, and the level of AFD in unripe-resistant fruits increased transiently when the fruits were inoculated with C. gloeosporioides or exposed to ethylene (40 microL/L), low temperature (4 degrees C) or 1 mm H(2)O(2), but ripe fruits were not affected. The effect of H(2)O(2) on the transcripts from the avfad12 gene family is of specific importance, because reactive oxygen species were produced by unripe-resistant host fruit soon after inoculation of C. gloeosporioides. In addition, the fungus itself produced H(2)O(2) in culture medium at pH 5.0, which is similar to the pH of unripe-resistant fruit, but not at pH 7.0. Treatments that enhanced Delta(12) fatty acid desaturase activity increased the concentration of the AFD precursor, linoleic acid, and its incorporation into AFD; these treatments also caused a delay in decay development. The present results demonstrate temporal relationships among the transcripts from the avfad12 gene family, the synthesis of the precursor of AFD (linoleic acid), the AFD content and quiescence of C. gloeosporioides in unripe fruits.
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Affiliation(s)
- Xuejun Wang
- Department of Postharvest Science of Fresh Produce, Institute of Technology and Storage of Agricultural Products, the Volcani Center, Agricultural Research Organization, PO Box 6, Bet Dagan 50250, Israel
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Ortiz MA, Dorantes AL, Gallndez MJ, Cardenas SE. Effect of a novel oil extraction method on avocado (Persea americana Mill) pulp microstructure. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2004; 59:11-14. [PMID: 15675146 DOI: 10.1007/s11130-004-0032-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Avocado (Persea americana Mill) is an oil-rich fruit, the pulp containing up to 33% of the oil. It is rich in monounsaturated fatty acids, and has nutritional properties similar to olive oil. However, there is no widespread commercial method for oil recovery from avocado pulp. The aim of this study is to contribute to the limited knowledge about the micro- and ultrastructure of avocado. It presents a micro- and ultrastructural study of avocado pulp before and after three different oil recovery methods, in order to relate the quality and yielding of the oil to the cellular changes in the pulp. This study was made using light, scanning electron, and electron transmission microscopy. The microwave-squeezing method yielded 67% of the oil, preserved the shape of the cell by causing only a slight modification, and gave the best quality oil. Hexane extraction yielded 59%, causing the idioblastic oil cells to become irregularly shaped and rough-surfaced. Acetone extraction yielded 12%, and deformed the cellular wall while the oil remained inside, giving a poor quality oil. On the basis of these results, the microwave-squeezing method is suggested as a new option for oil recovery from avocadopulp. This method could be adapted for industrial processing.
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Affiliation(s)
- M Alicia Ortiz
- Department of Biochemical Engineering, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico, D. F.
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