scholarly journals A SYNTHESIS AND REVIEW OF MEDICINAL USES, PHYTOCHEMISTRY AND BIOLOGICAL ACTIVITIES OF HELICHRYSUM ODORATISSIMUM (L.) SWEET

Author(s):  
ALFRED MAROYI

Helichrysum odoratissimum is an important medicinal plant species in tropical Africa. The current study critically reviewed the medicinal uses, phytochemistry and biological activities of H. odoratissimum. Information on medicinal uses, phytochemistry and biological activities of H. odoratissimum were collected from multiple internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, PubMed, SciFinder, and BMC. Additional information was gathered from pre-electronic sources such as journal articles, scientific reports, theses, books, and book chapters obtained from the university library. This study showed that H. odoratissimum is mainly used as an herbal medicine for insomnia, menstrual pain and sterility, and wounds and respiratory problems. Pharmacological research revealed that H. odoratissimum extracts and compounds isolated from the species have antibacterial, antimycobacterial, antifungal, anti-inflammatory, antioxidant, hepatoprotection, and hypoglycemic and cytotoxicity activities. There is a need to validate the documented ethnomedicinal uses of H. odoratissimum through phytochemical and pharmacological studies. Therefore, future studies should address these knowledge gaps through experimental animal studies, randomized clinical trials, and target-organ toxicity studies involving H. odoratissimum crude extracts and compounds isolated from the species.

2019 ◽  
Vol 9 (3) ◽  
pp. 189-194
Author(s):  
Alfred Maroyi

Helichrysum nudifolium is a valuable and well-known medicinal plant species in southern Africa. The current study critically reviewed the medicinal uses, phytochemistry and biological activities of H. nudifolium. Information on medicinal uses, phytochemistry and biological activities of H. nudifolium was collected from multiple internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, Pubmed, SciFinder and BMC. Additional information was gathered from pre-electronic sources such as journal articles, scientific reports, theses, books and book chapters obtained from the University library. This study showed that H. nudifolium is mainly used as ethnoveterinary medicine, as colic and herbal medicine for fever, headache, swellings, infertility, pregnancy and postpartum problems. Pharmacological research revealed that H. nudifolium extracts have antibacterial, antimycobacterial, antifungal, anti-HIV, GABAA-benzodiazepine receptor-binding, anticancer, anti-inflammatory, antiplasmodial, antiprotozoal and cytotoxicity activities. There is need for experimental animal studies, randomized clinical trials and target-organ toxicity studies involving H. nudifolium crude extracts and compounds isolated from the species. Future should also focus on evaluation of pharmacological properties of compounds isolated from H. nudifolium.


Author(s):  
ALFRED MAROYI

Helichrysum cymosum is a valuable and well-known medicinal plant in tropical Africa. The current study critically reviewed the medicinal uses, phytochemistry and biological activities of H. cymosum. Information on medicinal uses, phytochemistry and biological activities of H. cymosum, was collected from multiple internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, PubMed, SciFinder, and BMC. Additional information was gathered from pre-electronic sources such as journal articles, scientific reports, theses, books, and book chapters obtained from the University library. This study showed that H. cymosum is traditionally used as a purgative, ritual incense, and magical purposes and as herbal medicine for colds, cough, fever, headache, and wounds. Ethnopharmacological research revealed that H. cymosum extracts and compounds isolated from the species have antibacterial, antioxidant, antifungal, antiviral, anti-HIV, anti-inflammatory, antimalarial, and cytotoxicity activities. This research showed that H. cymosum is an integral part of indigenous pharmacopeia in tropical Africa, but there is lack of correlation between medicinal uses and existing pharmacological properties of the species. Therefore, future research should focus on evaluating the chemical and pharmacological properties of H. cymosum extracts and compounds isolated from the species.


Author(s):  
ALFRED MAROYI

Helichrysum petiolare is a valuable and well-known medicinal herb in South Africa. A comprehensive review of phytochemical, medicinal uses, and biological activities of H. petiolare is presented in this study. Information on biological activities, medicinal uses, and phytochemistry of H. petiolare was gathered from several internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, PubMed, SciFinder, and BMC. Additional information on these aspects was sourced from pre-electronic sources such as journal articles, scientific reports, theses, books, and book chapters obtained from the University library. The current study revealed that H. petiolare is mainly used as herbal medicine for respiratory infections, diabetes, fever, headache, heart problem, high blood pressure, pain, reproductive problems, and wounds. Phytochemical studies showed that H. petiolare extracts and compounds isolated from the species have antifungal, anti-inflammatory, antibacterial, antioxidant, antityrosinase, antigenotoxicity, and cytotoxicity activities. This research showed that H. petiolare is an integral part of indigenous pharmacopeia in South Africa, but there is the lack of alignment between the known medicinal applications, phytochemistry, and biological activities of the species. Therefore, future research should focus on evaluating the chemical and pharmacological properties of H. petiolare extracts and compounds associated with the species.


Author(s):  
ALFRED MAROYI

Helichrysum longifolium and Helichrysum pedunculatum have a long history of medicinal use, particularly managing wounds acquired during male circumcision rites in South Africa. There is a need to evaluate the existence of any correlation between the ethnomedicinal applications, the phytochemistry and pharmacological properties of the species. Therefore, in this review, analyses of the botanical, medicinal, and chemical and biological activities of H. longifolium and H. pedunculatum are presented as well as exploring the potential of the two species as important sources of health and pharmaceutical products. Information on the botany, medicinal uses, and phytochemistry and biological activities of H. longifolium and H. pedunculatum was assembled from several internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, PubMed, SciFinder, and BMC. Additional information was sourced from journal articles, scientific reports, theses, books, and book chapters obtained from the University library. This study showed that alkaloids, flavonoids, linoleic acid, oleic acid, phenol, proanthocyanidin, saponins, and tannins have been identified from the leaves of H. longifolium and H. pedunculatum. The pharmacological research showed that H. longifolium and H. pedunculatum extracts and compounds isolated from the species have antibacterial, antifungal, anti-inflammatory, antioxidant, antiplasmodial, antiprotozoal, and cytotoxicity activities. For local communities to use H. longifolium and H. pedunculatum extracts with confidence as herbal medicines, there is a need for extensive phytochemical and pharmacological studies. Further research is required to establish the safety profiles of different H. longifolium and H. pedunculatum preparations.


2019 ◽  
Vol 9 (3) ◽  
pp. 184-188
Author(s):  
Collen Musara ◽  
Alfred Maroyi

Gethyllis afra is an important medicinal plant species in South Africa. The current study critically reviewed the botany, ethnobotanical uses, biological and chemical properties of G. afra. Information on the botany, ethnobotanical uses, biological and chemical properties of G. afra was collected from multiple internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, Pubmed, SciFinder and BMC. Additional information was gathered from pre-electronic sources such as journal articles, scientific reports, books and book chapters obtained from the University library. This study showed that G. afra is mainly used as food, aphrodisiac, and herbal medicine for colic, indigestion, stomach-ache, boils, bruises, insect bites, toothache, convulsions, heart problems and sleeplessness. Major compounds isolated from the fruits of G. afra include ?-pinene, n-butyl n-butyrate, isoamyl acetate, ?-pinene and 2-methylbutyl butyrate. There is need to validate the documented ethnomedicinal uses of G. afra through phytochemical and pharmacological studies. Therefore, future studies should focus on these knowledge gaps particularly evaluating the chemical and biological activities of G. afra crude extracts and compounds isolated from the species.


Author(s):  
ALFRED MAROYI

Helichrysum foetidum is a medicinal plant species with various medicinal applications among different ethnic groups in Africa, Asia, and Europe. This review was aimed at providing a critical appraisal of the existing medicinal uses, biological activities, and phytochemical components of H. foetidum. Literature search for information on medicinal uses, biological activities, and phytochemical components of H. foetidum was conducted using various online search engines such as Scopus, Google Scholar, Mendeley, and Web of Science. Additional information on these aspects was sourced from the university library. Literature studies revealed that H. foetidum is mainly used to induce trances and as herbal medicine against wounds, sores, dysmenorrhea, eye infections, influenza, and as a sedative. Phytochemical compounds identified from the species include chalcones, diterpenoids, flavanols, flavonoids, phenolics, phenols, and proanthocyanidins. Pharmacological studies revealed that H. foetidum extracts and compounds have antibacterial, antifungal, antiviral, antioxidant, protease-inhibiting, and cytotoxicity activities. There is a need for advanced phytochemical and pharmacological evaluations and clinical trials aimed at evaluating the therapeutic potential of H. foetidum in Africa, Asia, and Europe.


Author(s):  
ALFRED MAROYI

This study is aimed at providing a critical review of the botany, biological activities and medicinal uses of P. prunelloides. Documented information on botany, biological activities, and medicinal uses of P. prunelloides was collected from several online sources which included BMC, Scopus, SciFinder, Google Scholar, Science Direct, Elsevier, PubMed, and Web of Science. Additional information on the botany, biological activities, and medicinal uses of P. prunelloides was gathered from book chapters, books, journal articles, theses, and scientific publications sourced from the University of Fort Hare Library. The study showed that the leaves and roots of P. prunelloides are used as herbal medicines for bodily pains, burns, cancer, diabetes, fever, gastrointestinal problems, heartburn, heart problems, respiratory problems, retained placenta, rheumatism, sexually transmitted infections, skin infections, snakebite, sores, wounds, toothache, and vomiting. Pharmacological research revealed that P. prunelloides extracts have antibacterial, antimycobacterial, antifungal, antiviral, antidiabetic, anti-inflammatory, analgesic, antioxidant, uterotonic and cytotoxicity activities. Future studies should focus on evaluating the phytochemical, pharmacological, and toxicological activities of P. prunelloides crude extracts as well as chemical compounds isolated from the species.


Author(s):  
ALFRED MAROYI

Zantedeschia aethiopica is an evergreen monocotyledonous herb widely used as herbal medicine and ornamental plant. The current study is aimed at reviewing the medicinal uses, phytochemistry, and biological activities of Z. aethiopica. Information on biological activities, medicinal uses, and phytochemistry of Z. aethiopica was gathered from several internet sources which included Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, PubMed, SciFinder, and BMC. Additional information on these aspects was sourced from pre-electronic sources such as journal articles, scientific reports, theses, books, and book chapters obtained from the University Library. The current study revealed that Z. aethiopica is mainly used as herbal medicine for boils, burns, gout, inflammation, insect bites, rheumatism, sores, and wounds. Phytochemical and pharmacological studies showed that Z. aethiopica extracts and compounds isolated from the species have antibacterial, antifungal, antioxidant, antihistaminic, antialgal, antithrombotic, and anticoagulant activities. This research showed that Z. aethiopica is an integral part of the traditional pharmacopeia in several countries where the species is indigenous or naturalized, but there is the lack of alignment between the known medicinal applications, phytochemistry, and biological activities of the species. Therefore, future research should focus on evaluating the chemical and pharmacological properties of Z. aethiopica extracts and compounds associated with the species.


Author(s):  
Alfred Maroyi

Heteromorpha arborescens is an important medicinal plant species throughout its distributional range in tropical Africa. This study evaluated the botany, medicinal uses, and pharmacological activities of H. arborescens. Literature focusing on the botany, phytochemical, pharmacological, and toxicological properties of H. arborescens were obtained from scientific databases such as SCOPUS, Science Direct, PubMed, SciFinder, Medline, and Google Scholar. Pre-electronic literature sources such as book chapters, books, journal articles, conference papers, and other scientific documents were obtained from the University library. Literature search revealed that H. arborescens is used as an aphrodisiac, as herbal medicine for shortness of breath, intestinal worms, inflammation, pain, respiratory problems, skin infections, headache, fever, and malaria. Pharmacological studies of compounds and H. arborescens extracts revealed anthelmintic, antiarthritic, antibacterial, antifungal, anti-inflammatory, antimycobacterial, antinociceptive, antioxidant, antipeptic ulcer, anti-scabies, antispasmodic, antiviral, cytotoxicity, genotoxicity, and uterotonic activities. More detailed research is needed aimed at assessing phytochemical, pharmacological, and toxicological properties of different plant parts and phytochemical compounds isolated from the species.


Author(s):  
Alfred Maroyi

Lannea discolor is an important component of the traditional, complementary, and alternative medicine health-care systems in several countries. This study is aimed at reviewing the botany, ethnomedicinal uses, phytochemical and biological activities of L. discolor. Information on its botany, medicinal uses, chemistry and pharmacological properties was undertaken using electronic databases such as Pubmed, SCOPUS, Medline, SciFinder, ScienceDirect, Google Scholar, EThOS, ProQuest, OATD and Open-thesis. Pre-electronic literature was sourced from the University Library. The species is used as herbal medicine for 24 human diseases. The major diseases and ailments treated using concoctions prepared from L. discolor include gastrointestinal problems, gonorrhea, infertility in women, convulsions, dizziness, injury, and wounds. Different aqueous and organic extracts of L. discolor exhibited anthelmintic, antibacterial, antimycobacterial, antifungal, antioxidant, antiplasmodial, and nematicidal activities. Detailed studies on the phytochemistry, pharmacological, and toxicological properties of L. discolor are required to correlate the medicinal uses of the species with its phytochemistry and pharmacological properties.


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