Articoli di riviste: "Petersianthus Macrocarpus"

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Massiot, Georges, Chen Xiang-Fei, Catherine Lavaud, Louisette Le Men-Olivier, Clement Delaude, Alain Viari, Paul Vigny e Jacques Duval. "Saponins from stem bark of Petersianthus macrocarpus". Phytochemistry 31, n. 10 (ottobre 1992): 3571–76. http://dx.doi.org/10.1016/0031-9422(92)83729-i.

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Ambombo Onguene, E. M., L. D. Kono, J. B. Ngola, J. A. Messi Effa, L. F. Menyene Etoundi, M. A. Mbarga Bindzi e E. Youmbi. "Variations in abundance of Imbrasia epimethea (Lepidoptera: Saturniidea) on Petersianthus macrocarpus in different forest types in Central Cameroon". African Journal of Tropical Entomology Research 2, n. 2 (20 agosto 2023): 39–49. http://dx.doi.org/10.58697/ajter020206.

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Edible caterpillars are of vital importance to rural communities in developing countries providing high protein values and income. However, their ecology particularly seasonal fluctuations in their numbers is still poorly understood. With the ongoing climate change and increasing deforestation, their survival is a crucial issue. The aim of this study was to assess the structural characteristics of Petersianthus macrocarpus (Lecythidaceae) on the abundance of edible caterpillars of Imbrasia epimethea (Saturniidea). The forest area on the outskirts of Yaoundé is an important production basin for edible caterpillars making a perfect medium to answer questions on the variations in the abundance of caterpillars of I. epimethea in relation to the forest type of P. macrocarpus. Concerning biometric parameters, the [20-30[ cm diameter class in agroforest had more edible caterpillars (31.1 %). In the secondary forest and swamp forest, it was the [50-60[ cm diameter class with respectively 34 % and 27.4 %. In terms of height, the [30-40[ m height class contained more edible caterpillars (68.50 %), whereas the [60-70[ m height class represented the stratum with the least edible caterpillars (5.10 %). In different forest types, the abundance of caterpillars of I. epimethea according to the social status of P. macrocarpus individuals showed that caterpillars are found in abundance preferentially on dominant individuals (52.7 % in swamp forest, 49.7 % in secondary forest and 45.6 % in agroforest). The mean abundance of I. epimethea caterpillars was higher in secondary forest (563 ± 62 caterpillars) compared to agroforest and swamp forest. In contrast, swamp forest had the lowest mean abundance of edible caterpillars (375 ± 24 caterpillars) according to the social status of P. macrocarpus. These results point way to a better understanding of the use and management of an economically important NTFP.

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Mitashi Kimvula, Jules, Constantin Lubini Ayingweu, Hippolyte Nshimba Seya e Nicolas Picard. "Recruitment limitation of Petersianthus macrocarpus in eastern DRC: seed or establishment limitation?" Revue d'Écologie (La Terre et La Vie) 65, n. 4 (2010): 369–75. http://dx.doi.org/10.3406/revec.2010.1544.

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Adesegun, SundayAdeleke, CelestinaIfeoma Orabueze e HerbertAlexander Coker. "Analgesic and antioxidant activities of stem bark extract and fractions of Petersianthus macrocarpus". Pharmacognosy Research 8, n. 3 (2016): 181. http://dx.doi.org/10.4103/0974-8490.182912.

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Nwanochi, Elsie Chinem, Ada Mercy Ugbe, John Nwolim Paul, Anelechi Kenneth Madume, Confidence Waribo Ihua, Chioma Akunnaya Ohanenye, Mandah Chimezunem, Azumah Mercy Kelechi e Chizam Treasure Nwokanma. "Effect of ethanolic leaf extracts of petersianthus macrocarpus on Haematological Parameters and Lipid Profile of Streptozotocin Induced Type 2 Diabetic Wistar Rats". Cross Current International Journal of Medical and Biosciences 5, n. 04 (6 dicembre 2023): 96–100. http://dx.doi.org/10.36344/ccijmb.2023.v05i04.004.

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Background: The most prevalent kind of diabetes that results from insulin resistance is type 2. Hyperglycemia, polyphagia, polyuria, and polydipsia are the traditional trifecta of symptoms associated with this illness. The purpose of this study was to ascertain the impact of petersianthus macrocarpus ethanolic leaf extract on the lipid profile and haematological markers of streptozotocin-induced type 2 diabetic wistar rats. Materials and methods: Five groups of rats were used: non-diabetic, diabetic, untreated, glibenclamide-treated, ethanolic extract-treated, and 100 mg/kg body weight-treated. Results: The body weight of the rats treated with 100 mg/kg body weight increased, while the body weight of the rats treated with 50 mg/kg body weight decreased, according to the results. Conclusion: 100 mg/kg body weight was determined to be the least effective therapeutic dose, indicating the potential of ethanolic leaf extracts.

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Marfo, Eric D. "Chemical modification of Petersianthus macrocarpus (essia), to determine whether durability depends on bulking or hydroxyl substitution". Journal of Energy and Natural Resource Management 3, n. 3 (24 febbraio 2018): 92–96. http://dx.doi.org/10.26796/jenrm.v3i3.64.

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Wood is a biodegradable material. Decay resistance of wood is improved when the wood is chemically modified. The decayresistance of a chemically modified wood is improved as the modification stabilizes the cell wall polymers against enzyme attackdue to the blocking of accessible hydroxyl groups of the cell wall polymers which reduces the amount of water for hydrolysis. Theimproved durability of the modified wood as a result of reducing the amount of water molecules into the cell wall for hydrolysiswill depend on either bulking or percentage hydroxyl substitution (%OH). Petersianthus macrocarpus (essia), a tropical hardwoodspecies was chemically modified with acetic anhydride (AA) and pentanoic anhydride (PA) in dry pyridine to improve its decayresistance. Graveyard test was used to analyze the effect of the modification on the decay resistance of the wood in twelve weeksin-ground contact. Percentage weight loss and visual decay grades were used to evaluate whether the decay resistance dependson weight percentage gain or percentage hydroxyl substitution. The decay resistance of the modified samples were found to bedependent on bulking.

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Abankwa, Agnes, e Rosemary Acquaye. "Assessment of Nutritional Composition of Shrimps Using Different Smoking Method". Asian Journal of Fisheries and Aquatic Research 24, n. 6 (24 agosto 2023): 17–27. http://dx.doi.org/10.9734/ajfar/2023/v24i6649.

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The study assessed the effects of smoking on the nutrient attributes of penaeus notialis shrimps in Ghana. Terminalia ivorensis, Petersianthus macrocarpus and Albizia zygia were used as fuel woods to smoolder the shrimps. Descriptive and experimental research designs were adopted to guide the entire study. A Random sampling technique was used to select 88 second year students of the Catering and Hospitality Department at the Kumasi Technical University. Frequency and percentage were used to analyse the background information of the respondents. One way Analysis of variance (ANOVA) was used to test for significant differences among the types of wood used. The study revealed that seven nutrients (Dry Matter, Moisture, Ash, Protein, Fibre, Fat/Oil and Carbohydrate) were found. There is a significant difference in nutritional and chemical properties of the shrimps based on the types of wood used for smoking. The study, therefore, recommended that, care must be taken not to use any wood for fuel in smoking shrimps.

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Bomba, Francis Desire Tatsinkou, Telesphore Benoit Nguelefack, Gangadhar Matharasala, Ram Kumar Mishra, Madhu Babu Battu, Dharmarajan Sriram, Albert Kamanyi e Perumal Yogeeswari. "Antihypernociceptive effects of Petersianthus macrocarpus stem bark on neuropathic pain induced by chronic constriction injury in rats". Inflammopharmacology 29, n. 4 (3 giugno 2021): 1241–53. http://dx.doi.org/10.1007/s10787-021-00821-y.

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Idaguko, Chika Anna, e Mayowa Jeremiah Adeniyi. "Indigenous Antidiabetic Medicinal Plants Used in Nigeria: A Review". Asian Plant Research Journal 11, n. 6 (7 dicembre 2023): 81–97. http://dx.doi.org/10.9734/aprj/2023/v11i6234.

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Diabetes mellitus is among the most prevalent endocrine disease that causes morbidity and mortality in Nigeria. Traditional medical system has been used for the both prevention and treatment of diabetes mellitus since ages. This paper reviewed the use of 35 Nigerian plants with putative anti-diabetic properties with the help of published literature. As per the International Union for Conservation of Nature (IUCN), status of these species include Sterculia tragacantha, Newbouldia laevis, Solanum anomalum, Ficus exasperate, Raffia palm (Raphia hookeri) Azadirachta indica, Syzygium cumini, Terminalia catapp, Solanum macrocarpon, Petersianthus macrocarpus, Xylopia aethiopica, Costus aferker-gawl, Spondias mombin, Eucalyptus globulus Parkia biglobosa, Persea americana, Anacardium occidentale, Vernonia amygdalina as least concern. While the status of Hunteria umbellate and Vitex doniana are reported as threatened and Dacryodes edulis and Dennettia tripetala as vulnerable species. However, the status of Annona muricata, Chrysophyllum albidum, Citrus paradisi Macfad, Aloe vera (Aloe barbadensis) are not evaluated. The following species like Phyllanthus amarus, Phyllanthus niruri and Telfairia occidentalis are data deficient. Most of the species belonging to common families like Solanaceae, Anacardiaceae, Euphorbiaceae, Annonaceae and Rutaceae. This review offers relevant information and recent scientific findings on the plants used to treat and manage diabetes in Nigeria. The cellular mechanisms through which these natural agents exert their protective and therapeutic effects on diabetes mellitus may include antioxidative stress, restricting the breakdown of glycogen, pancreatic β-cell regeneration, gluconeogenesis, anti-inflammatory and intracellular signals transduction pathways. This study concludes that indigenous medicinal herbs utilized in Nigeria have the potential to treat diabetes mellitus in Nigeria. Further studies are needed to discover potential drugs from these indigenous plants.

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Bomba, Francis Desire Tatsinkou, Bibiane Aimee Wandji, Basile Nganmegne Piegang, Maurice Ducret Awouafack, Dharmarajan Sriram, Perumal Yogeeswari, Albert Kamanyi e Telesphore Benoit Nguelefack. "Antinociceptive properties of the aqueous and methanol extracts of the stem bark of Petersianthus macrocarpus (P. Beauv.) Liben (Lecythidaceae) in mice". Journal of Ethnopharmacology 174 (novembre 2015): 66–73. http://dx.doi.org/10.1016/j.jep.2015.08.004.

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Katembo, John M., Moses B. Libalah, Faustin B. Boyemba, Gilles Dauby e Nicolas Barbier. "Multiple Stable Dominance States in the Congo Basin Forests". Forests 11, n. 5 (14 maggio 2020): 553. http://dx.doi.org/10.3390/f11050553.

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Understanding the dynamics of dominant tree species in tropical forests is important both for biodiversity and carbon-related issues. We focus on the Congo Basin (East of Kisangani) to investigate the respective roles of topographic/soil gradients and endogenous dynamics in shaping local variations in dominance. We used a dataset of 30 1-ha plots, in which all trees above 10 cm diameter at breast height (DBH) were censused. Soil samples were analyzed for standard pedologic variables and a digital elevation model permitted to infer topography and hydromorphy. We found that this forest is characterized by variations in the abundance of three dominant species: Petersianthus macrocarpus (P.Beauv.) Liben (PM), Gilbertiodendron dewevrei (De Wild.) J.Leonard (GD) and Julbernardia seretii (De Wild.) Troupin (JS). These variations occur independently of substratum or topography variations. At plot level, the local relative abundance never reached 50%, the threshold for monodominance proposed in the literature, but rather progressively increased to reach higher values for canopy trees (>60 cm DBH), where this threshold could be exceeded. We found no sign of shifting compositional dynamics, whereby the dominant species would switch between the canopy and the undergrowth. Our results, therefore, support the possibility of the existence of stable dominance states, induced by endogenous processes, such as biological positive feedbacks fostering monodominance. We also document a strong relation between monodominance level and alpha diversity, when giving more weight to abundant species which is expected (R² = 0.79) but also when giving more weight to rare species (R² = 0.37), showing that monodominance influences tree species richness patterns. Structural differences existed between groups, with the PM group having more (and on average smaller) stems and lighter wood on average, but paradoxically also higher biomass and basal area.

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Herve, Bayaga, Bathelemy Ngameni, Estella Achick Tembe, Mbong Grace Anih, Njinkio Nono Borgia e Charles N. Fokunang. "Ethnobotanical and Ethnopharmacological Survey of Herbal Products of Pharmaceutical Importance for Chronic Wound Management in Bankim District of Adamaoua Region of Cameroon". Journal of Advances in Medical and Pharmaceutical Sciences 25, n. 7 (28 agosto 2023): 43–57. http://dx.doi.org/10.9734/jamps/2023/v25i7632.

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Introduction: In Cameroon, the identification of plants traditionally used to treat diseases remains a necessity. Inflammation from injury leading in some cases to chronic wounds like diabetic ulcer (for diabetic patients) is increasingly becoming a public health concern in Cameroon. As a low-income country, the population attempts to with alternative treatments through the use of herbal products. Cameroon has a rich biodiversity of herbal flora for exploitation of potential bioactive metabolites of pharmaceutical importance. Therefore, the aim of this study was to identify plants and recipes used by some traditional healers in Bankim, Adamaoua Region of Cameroon for the management of chronic wounds. Methodology: After obtaining various administrative and institutional authorizations, an ethnobotanical survey was conducted among the local traditional practitioners between the months of December 2020 to February 2021. The plant samples collected were identified and confirmed by experts of the National Herbarium of Cameroon at Yaoundé. Results: Thanks to the collaboration of 09 traditional healers, 30 plant species were identified and used in the preparation of 24 recipes. The families: Rubiaceae, followed by Caesalpiniaceae, Cucurbitaceae, Euphorbiaceae, Fabaceae and Moraceae were the most represented. The species Musa paradisiaca, Ficus exasperata, Dacryodes edulis and Petersianthus macrocarpus were the most cited and were selected as plants of therapeutic interestVarious plant parts were used in the preparation of recipes. The bark (50%), followed by leaves (30%) were the most commonly used. Spraying (63%) and decoction (34%) were the two main ways of preparing the recipes. These preparations were mostly prescribed externally; poultice (40%), washing (27%), sprinkling (20%) and instillation (3%) were the most commonly used application techniques. Conclusion: These results constitute an indispensable database for the valorization of traditional medicines. Musa paradisiaca, Ficus exasperata, Dacryodes edulis and Citrullus lanatus were selected as plants of interest whose extracts should be the subject of phytochemical and pharmacological studies in order to justify their traditional use.

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"Petersianthus macrocarpus". CABI Compendium CABI Compendium (7 gennaio 2022). http://dx.doi.org/10.1079/cabicompendium.39826.

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"Phenology of Petersianthus Macrocarpus from 2017 to 2020 and Risk of Pollinosis in Dictrict of Abidjan". Advance in Environmental Waste Management & Recycling 3, n. 2 (20 giugno 2020). http://dx.doi.org/10.33140/aewmr.03.02.10.

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Petersianthus macrocarpus is a plant species whose pollens are potentially allergenic. This plant is present from the coast to the centre of the country. The objective of this study is to prevent populations from being exposed to the pollens of Petersianthus macrocarpus. Specifically, it was a question of defining the flowering of Petersianthus macrocarpus, evaluating the impact of the climate on this flowering and listing the populations most exposed to P. macrocarpus pollens. The study took place in Abidjan, in the commune of Yopougon, specifically in South Niangon, from September 2017 to June 2020. Sampling by quadrat allowed to determine the number of individuals, the cover, the density and the frequency of the vegetation. Floral phenology was carried out by weekly observations using binoculars. The coverage in each quadrat was 1 and the frequency 100%. Individuals less than 6 m high did not bear any flowers. Two flowering periods were observed in the years 2017 to 2019. The first was from April to June, the second from November to January. However, there was no flowering from April to June in 2020. The evolution of rainfall in 2020 was not identical to that of the three previous years. The phenology of Petersianthus macrocarpus presents periods of high risk of pollinosis and is influenced by rainfall. Increasing wind speed exposes new populations to pollen. The installation of pollen collectors is certainly necessary to establish the pollen calendar of Petersianthus macrocarpus in Côte d’Ivoire.

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Ugochukwu, Aligwekwe A., e Idaguko C. Anna. "Phytochemical Evaluation and Anti-Diabetic Effects of Ethanolic Leaf Extract of Petersianthus macrocarpus on Streptozotocin-Induced Diabetic Rats". Journal of Advances in Medicine and Medical Research, 24 febbraio 2021, 39–47. http://dx.doi.org/10.9734/jammr/2021/v33i330819.

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Aim: The purpose of this study was to evaluate the antidiabetic effect of ethanolic extracts of Petersianthus macrocarpus leaf and its phytochemical analysis using different solvents. Place and Duration of Study: The study was carried out between March and September in 2018 in the Department of Anatomy, Madonna University, Elele. River State, Nigeria. Materials and Methods: Twenty five Wistar rats, weighing between 200-225g were divided into five groups of five rats. Group A (Control) while Groups B, C, D and E were induced with diabetes using streptozotocin firstly 35mg/kg b.w; and 2 weeks later 25mg/kg b.w. Group B (Diabetic control), Group C received 0.5mg/kg b.w of Glibenclamide. Groups D and E received daily 50 and 100 mg/kg b.w of ethanolic leaf extract of P. macrocarpus orally for two weeks. The fasting blood glucose levels were determined weekly for two weeks. At the end of the experiment, the animals were sacrificed and the pancreas was removed for histological procedures. Results: The body weights increased significantly (P<0.05) in 100 mg/kg b.w group when compared to the diabetic control rats weight at the end of the experiment. Also there was a significantly decreased (P<0.05) in blood glucose levels in P. macrocarpus (100mg/kg b.w). The histological section of the pancreas of diabetic control showed eosinophilic material in the islet, shrinkage of the islet of Langerhans while the group treated with 100 mg/kg of extract showed granulated and well prominent pancreatic islet of Langerhans. Phytochemical screening showed methanolic extract of P. macrocarpus leaf having alkaloid, saponin, tannin, phenol, flavonoid, cardiac glycoside, steroids, terpenoids, anthocyanin and anthraquinone. However, cardiac glycosides and steroids were absent in ethanolic extract. Cardiac glycoside and terpenoids were also absent in hexane and acetone extract, while phenol, cardiac glycosides, steroids and anthrocyanin were absent in the water extract. Conclusion: Ethanolic leaf extract of P. macrocarpus ameliorate streptozotocin-induced diabetes in Wistar rats.

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Madamo Malasi, F., F. Francis e R. Caparros Megido. "Bioecology of Imbrasia epimethea (Drury, 1773) caterpillars consumed in Kwilu province, Democratic Republic of the Congo". Journal of Insects as Food and Feed, 23 gennaio 2024, 1–16. http://dx.doi.org/10.1163/23524588-20230113.

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Abstract Imbrasia epimethea is one of the most esteemed and popular caterpillar species for its remarkable organoleptic and nutritional values. Its consumption extends throughout the Kwilu province and nearly the entire Democratic Republic of the Congo, but its supply is very limited. The high anthropogenic pressure and the poor harvesting techniques employed by the population of Kwilu pose a major threat to the conservation of the species. This study aims to investigate the bioecology of I. epimethea in order to develop semi-captive breeding techniques for these caterpillars, making them accessible to the population. In order to determine the host plants of I. epimethea, a survey was conducted among 424 caterpillar collectors from two populated and forested territories in the Kwilu province. To study the influence of changes in the caterpillars’ diet on their growth and determine their developmental cycle, a breeding experiment was conducted. This study revealed that the caterpillars of I. epimethea do not accept transfers from Petersianthus macrocarpus to Funtumia africana. It also confirms the polyphagy of these caterpillars while indicating that, overall, P. macrocarpus proved to be the most suitable host in the Kwilu province. I. epimethea is a social species with a development cycle, from hatching to emergence, lasting approximately 115.33 ± 3.06 days. The larval stage lasts about a month but with a prolonged period of nymphal diapause. Further analysis of the leaves of P. macrocarpus and F. africana, as well as the analysis of the caterpillars themselves, along with several breeding trials, will provide further clarification on this matter.

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"Phytochemical Composition and Anti-microbial Properties of Petersianthus macrocarpus (P.Beauv.) Liben (Lecythidaceae) Stem Bark Extract and Fractions". Tropical Journal of Natural Product Research 6, n. 10 (1 novembre 2022): 1511–14. http://dx.doi.org/10.26538/tjnpr/v6i10.35.

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Bomba, Francis Desire Tatsinkou, Bibiane Aimée Wandji, Christian Kuete Fofié, Albert Kamanyi e Télesphore Benoit Nguelefack. "Antihypernociceptive and antioxidant effects of Petersianthus macrocarpus stem bark extracts in rats with complete Freund’s adjuvant-induced persistent inflammatory pain". Journal of Complementary and Integrative Medicine 14, n. 2 (1 gennaio 2017). http://dx.doi.org/10.1515/jcim-2016-0104.

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AbstractBackground(P. Beauv.) Liben (Lecythidaceae) is a plant used in Cameroonian folk medicine to cure ailments such as inflammation and pain. Previous work showed that aqueous (AEPM) and methanol (MEPM) extracts from the stem bark ofMethodsInflammatory pain was induced by intraplantar injection of CFA into the left hind paw of Wistar rats. AEPM and MEPM were administered either acutely or chronically by the oral route at the doses of 100 and 200 mg/kg/day. The mechanical hyperalgesia was tested using an analgesimeter, while the locomotion activity at the end of experiment was evaluated with an open-field device. Nitric oxide (NO), malondialdehyde (MDA) and superoxide dismutase (SOD) contents were assayed in the brain and spinal cord of rats subjected to 14 days chronic treatment.ResultsAEPM and MEPM at both doses significantly (p<0.001) inhibited the acute and chronic mechanical hyperalgesia induced by CFA. Although not significant, both extracts increased the mobility of CFA-injected animals. AEPM significantly (p<0.01) reduced the level of nitrate at 100 mg/kg, MDA at 200 mg/kg and significantly (p<0.05) increased the SOD in the spinal cord. MEPM significantly increased the SOD content and reduced the MDA concentration in the brain but had no effect on the nitrate.ConclusionsAEPM and MEPM exhibit acute and chronic antihyperalgesic activities. In addition, both extracts possess antioxidant properties that might strengthen their chronic antihyperalgesic effects.

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Mballa Rose, Ngono, Wokam Michele Noel, Wouessidjewe Denis, Minyem Aude Perrine, Ngoupayo Joseph e Beyene Victorine. "Pharmacognosic standardization of a traditional recipe for incurable wounds based on Petersianthus macrocarpus (Lecythidaceae), Vernonia conferta (Asteraceae), and Carica papaya (Caricaceae) in Cameroon". Pharmacy & Pharmacology International Journal 7, n. 2 (9 aprile 2019). http://dx.doi.org/10.15406/ppij.2019.07.00236.

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Articoli di riviste sul tema "Petersianthus Macrocarpus"

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