scholarly journals Elephantorrhiza elephantina: Traditional Uses, Phytochemistry, and Pharmacology of an Important Medicinal Plant Species in Southern Africa

2017 ◽  
Vol 2017 ◽  
pp. 1-18 ◽  
Author(s):  
Alfred Maroyi

Elephantorrhiza elephantinais used in southern Africa as traditional remedy for a wide range of human diseases and ailments including dermatological diseases, gastrointestinal system disorders, sexual dysfunction, sexually transmitted infections, and wounds. The rhizome decoction ofE. elephantinais widely used by small-scale farmers in Botswana and South Africa as ethnoveterinary medicine for cattle, goats, horses, pigs, poultry, and sheep. Several classes of phytochemical compounds including anthocyanidins, anthraquinones, esters, fatty acids, phenolic compounds, flavonoids, glycosides, polysterols, saponins, sugars, tannins, and triterpenoids have been isolated fromE. elephantina. Scientific studies onE. elephantinaindicate that it has a wide range of biological activities including anthelmintic, antibacterial, antifungal, anti-inflammatory and antinociceptive, antiplasmodial, antioxidant, antibabesial, and antirickettsial activities.Elephantorrhiza elephantinais a valuable source of traditional medicine in southern Africa that it is worth additional research attention because of its wide ethnomedicinal applications and promising biological activities. However, the current health-related information onE. elephantinais not sufficiently explored as diverse studies on its chemical and pharmacological activities are required to understand its mechanism of action and to characterize the metabolites responsible for these activities.

2019 ◽  
Vol 11 (8) ◽  
pp. 2400 ◽  
Author(s):  
Karthikeyan Mariappan ◽  
Deyi Zhou

Agriculture is the main sources of income for humans. Likewise, agriculture is the backbone of the Indian economy. In India, Tamil Nadu regional state has a wide range of possibilities to produce all varieties of organic products due to its diverse agro-climatic condition. This research aimed to identify the economics and efficiency of organic farming, and the possibilities to reduce farmers’ suicides in the Tamil Nadu region through the organic agriculture concept. The emphasis was on farmers, producers, researchers, and marketers entering the sustainable economy through organic farming by reducing input cost and high profit in cultivation. A survey was conducted to gather data. One way analysis of variance (ANOVA) has been used to test the hypothesis regards the cost and profit of rice production. The results showed that there was a significant difference in profitability between organic and conventional farming methods. It is very transparent that organic farming is the leading concept of sustainable agricultural development with better organic manures that can improve soil fertility, better yield, less input cost and better return than conventional farming. The study suggests that by reducing the cost of cultivation and get a marginal return through organic farming method to poor and small scale farmers will reduce socio-economic problems such as farmers’ suicides in the future of Indian agriculture.


Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 207
Author(s):  
Naomi B. Rioba ◽  
Philip C. Stevenson

Fall Armyworm (FAW) (Spodoptera frugiperda) is a polyphagous and highly destructive pest of many crops. It was recently introduced into Africa and now represents a serious threat to food security, particularly because of yield losses in maize, which is the staple food for the majority of small-scale farmers in Africa. The pest has also led to increased production costs, and threatens trade because of quarantines imposed on produce from the affected countries. There is limited specific knowledge on its management among smallholders since it is such a new pest in Africa. Some synthetic insecticides have been shown to be effective in controlling FAW, but in addition to the economic, health and environmental challenges of pesticide use insecticide resistance is highly prevalent owing to years of FAW management in the Americas. Therefore, there is a need for the development and use of alternatives for the management of FAW. These include plant-derived pesticides. Here we review the efficacy and potential of 69 plant species, which have been evaluated against FAW, and identify opportunities for use among small-scale maize farmers with a focus on how pesticidal plants might be adopted in Africa for management of FAW. The biological activities were diverse and included insecticidal, insectistatic (causing increased larval duration), larvicidal, reduced growth and acute toxicity (resulting in adverse effects within a short time after exposure). While most of these studies have been conducted on American plant taxa many South American plants are now cosmopolitan weeds so these studies are relevant to the African context.


Author(s):  
Leandri Kruger

Hazard-prone areas in southern Africa experience many natural hazards, which include cyclones, floods and droughts. The severe climatic conditions of southern Africa have an especially large impact on the agricultural practices of small-scale farmers. These hazards should be mitigated to ensure more resilient communities and food security. This study mainly focuses on the timing of agricultural production in hazard-prone areas to prevent losses at peak-risk periods by adapting the agricultural cycle. This study focuses on the agricultural activities of small-scale farmers in Malawi, Madagascar and Mozambique. A literature review is presented, and a mixed-method research design were followed to determine the timing of production followed by these small-scale farmers and its impact on production and food security. Although this study found that the small-scale farmers generally plant with the first rains, it is recommended by literature that early planting should be practised to ensure optimal production. It is also recommended that small-scale farmers should implement watermanagement techniques for dry periods, and when farmers practice late planting, the use of residual-moisture retention should be utilised as a mitigation measure. This will in effect ensure that the communities are less vulnerable during peak-risk periods by improving or ensuring food security. Therefore, adapting the planting and production time in these hazardprone areas at peak-risk periods could limit losses and increase communities’ resilience.


Author(s):  
Aoife Poth ◽  
Meret Baumgardt ◽  
Valentina A. Tesky ◽  
Johannes Pantel ◽  
Frank Oswald ◽  
...  

AbstractAs some cognitive functions decline in old age, the ability to decide about important life events such as medical treatment is endangered. Environmental support to improve the comprehension of health-related information is therefore necessary. With a small-scale explorative approach, the present survey study aimed at investigating person-environment fit (PE-fit) of support provided during medical consultations. This fit was calculated by assessing the match between aids provided by five medical practitioners during medical consultations and aids most appreciated by the geriatric patients (N = 88). The results showed that the largest discrepancies of used and appreciated aids could be found concerning the opportunity to discuss decisions with relatives, the possibility to take notes, the use of objects, pictures and a keyword list. Female patients indicated a lower PE-fit. These findings highlight discrepancies between the use of specific aids and the wishes of patients and call for thoughtful use of aids during consultations with geriatric patients.


2020 ◽  
Vol 11 (4) ◽  
pp. 5777-5786
Author(s):  
Alfred Maroyi

Antidesma venosum is an evergreen to semi-deciduous tree used traditionally to treat various human and animal diseases. This review aims to provide an overview and critically analyze the ethnomedical uses, phytochemistry and biological activities of A. venosum. The results of the current study are based on literature survey conducted using various search engines such as Elsevier, Pubmed, Google Scholar, PubMed, Springer, Science Direct, Taylor and Francis, and pre-electronic sources such as books, book chapters, scientific journals and other grey literature. The bark, fruit, leaf, root and stem bark decoction or infusion of A. venosum are mainly used for magical rituals, as anthelmintic and ethnoveterinary medicine, and traditional cure for epilepsy, hernia, malaria, skin infections, oral candidiasis, snakebites, sexually transmitted infections, abdominal pains, menstrual problems, respiratory infections, infertility, and gastrointestinal infections. The chemical constituents identified from A. venosum include essential oils, isoquinoline alkaloids, triterpenoids, lactones, phytosterols, saponins, cardiac glycosides, tannins and flavonoids. The species possesses a wide range of biological activities which include antibacterial, antimycobacterial, antifungal, anti-inflammatory, antioxidant, antischistosomal, mutagenic and cytotoxicity activities. Antidesma venosum is a valuable medicinal plant species, and future research should focus on animal experiments aimed at assessing toxicity and clinical efficacy of species extracts.


2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Alfred Maroyi

Gunnera perpensais the only species of the genusGunnerathat has been recorded in Africa. Its leaves, rhizomes, roots, and stems are reported to possess diverse medicinal properties and used to treat or manage various human and animal diseases and ailments.Gunnera perpensais an ingredient in many herbal concoctions and prescriptions which have been used to induce or augment labour, postnatal medication, to treat parasitic diseases, urinary complaints, kidney problems, general body pains, sexually transmitted infections, and many other diseases. Several classes of phytochemicals including alkaloids, benzoquinones, ellagic acids, flavonoids, phenols, proanthocyanidins, tannins, and minerals have been isolated fromG. perpensa. Scientific studies onG. perpensaindicate that it has a wide range of pharmacological activities including acetylcholinesterase, anthelmintic, antibacterial, antifungal, antinociceptive, anti-inflammatory, antioxidant, antitumour, lactogenic, and uterotonic.Gunnera perpensahas a lot of potential as a possible source of pharmaceutical products for the treatment of a wide range of both human and animal diseases and ailments. Some of the chemical compounds isolated fromG. perpensahave demonstrated various biological activities when investigated inin vitroassays. Future research should focus on the mechanisms of action of the isolated compounds, their efficacy, toxicity, and clinical relevance.


Author(s):  
ALFRED MAROYI

Boscia albitrunca is a medium-sized tree widely used as herbal medicine in Southern Africa. The current study critically reviewed the botany, medicinal uses, phytochemistry, and pharmacological activities of B. albitrunca. Literature on botany, medicinal uses, phytochemical, and biological activities of B. albitrunca was collected from multiple internet sources including Elsevier, Google Scholar, SciFinder, Web of Science, PubMed, BMC, Science Direct, and Scopus. Complementary information was gathered from pre-electronic sources such as books, book chapters, theses, scientific reports, and journal articles obtained from the university library. This study revealed that the species is used as herbal medicine in 75.0% of the countries in Southern Africa where the species is indigenous. The bark, leaves, and roots of B. albitrunca are mainly used as herbal medicines for constipation, epilepsy, hemorrhoids, headache, human immunodeficiency virus/acquired immune deficiency syndrome, skin diseases, syphilis, and as ethnoveterinary medicine. Ethnopharmacological research identified phenolic compounds, alkaloids, coumarins, flavonoids, saponins, steroids, tannins, and triterpernoids from leaves of B. albitrunca. The crude extracts of the species and the compound martynoside isolated from B. albitrunca exhibited antibacterial and antifungal activities. B. albitrunca should be subjected to detailed phytochemical, pharmacological, and toxicological evaluations aimed at correlating its medicinal uses with its phytochemistry and pharmacological activities.


Sign in / Sign up

Export Citation Format

Share Document