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1 Mudau, F. N.; Chimonyo, V. G. P.; Modi, A. T.; Mabhaudhi, Tafadzwanashe. 2022. Neglected and underutilised crops: a systematic review of their potential as food and herbal medicinal crops in South Africa. Frontiers in Pharmacology, 12:809866. [doi: https://doi.org/10.3389/fphar.2021.809866]
Medicinal plants ; Food crops ; Underutilized species ; Food security ; Nutrition security ; Nutraceuticals ; Pharmaceuticals ; Sustainability ; Diets ; Food supplements ; Capacity development / South Africa
(Location: IWMI HQ Call no: e-copy only Record No: H050904)
https://www.frontiersin.org/articles/10.3389/fphar.2021.809866/pdf
https://vlibrary.iwmi.org/pdf/H050904.pdf
https://vlibrary.iwmi.org/pdf/H050904.pdf
(1.93 MB) (1.93 MB)
The African continent harbours many native species with nutraceutical and pharmaceutical potential. This study reviewed underutilised crops in South Africa to determine their potential as food and herbal medicinal crops. Over 5,000 species have been identified and earmarked for their medical attributes in formal and informal setups. Researchers, plant breeders and policymakers have mostly ignored the development potential of these crops. Consequently, their value chains are poorly developed. In South Africa, there is a wide range of neglected and underutilised crops, which were historically popular and used by communities; however, over the years, they have lost their status within farming systems and been relegated to the status of neglected and underutilised. Recently, driven by the need to transition to more sustainable and resilient food systems, there has been renewed interest in their potential as food and herbal medicinal crops to establish new value chains that include vulnerable groups. They are now gaining global attention, and their conservation and sustainable utilisation are now being prioritized. The review confirmed that several of these crops possess nutraceutical and pharmaceutical properties, highlighting their potential for development as food and herbal medicines. However, current production levels are too low to meet the requirements for industrial development; research and development should focus on all aspects of their value chain, from crop improvement to utilisation. A transdisciplinary approach involving a wide range of actors is needed to develop the identified neglected and underutilised crops’ potential as food and herbal medicinal crops and support the development of new and inclusive value chains.
2 Ramphinwa, M. L.; Mchau, G. R. A.; Mashau, M. E.; Madala, N. E.; Chimonyo, V. G. P.; Modi, T. A.; Mabhaudhi, T.; Thibane, V. S.; Mudau, F. N.. 2023. Eco-physiological response of secondary metabolites of teas: review of quality attributes of herbal tea. Frontiers in Sustainable Food Systems, 7:990334. [doi: https://doi.org/10.3389/fsufs.2023.990334]
Herbal teas ; Physiological response ; Secondary metabolites ; Medicinal properties ; Phenolic compounds ; Environmental factors ; Abiotic stress ; Biotic stress ; Antioxidants ; Antidiabetic properties ; Antimicrobial properties ; Water stress ; Temperature
(Location: IWMI HQ Call no: e-copy only Record No: H051765)
https://www.frontiersin.org/articles/10.3389/fsufs.2023.990334/pdf
https://vlibrary.iwmi.org/pdf/H051765.pdf
https://vlibrary.iwmi.org/pdf/H051765.pdf
(0.42 MB) (429 KB)
Herbal tea is a rich source of secondary metabolites which are reputed to have medicinal and nutritional efficacy. These secondary metabolites are influenced by the abiotic and biotic stresses that improve the production of herbal teas in terms of biomass production, accumulation and partitioning of assimilates of compounds. In this study, various examples of herbal teas have been shown to respond differently to secondary metabolites affected by environmental factors. Thus, the meta-analysis of this study confirms that different herbal teas' response to environmental factors depends on the type of species, cultivar, and the degree of shade that the plant is exposed. It is also evident that the metabolic processes are also known to optimize the production of secondary metabolites which can thus be achieved by manipulating agronomic practices on herbal teas. The different phenolic compound in herbal teas possesses the antioxidant, antimicrobial, antiatherosclerosis, anti-inflammatory, antimutagenic, antitumor, antidiabetic and antiviral activities that are important in managing chronic diseases associated with lifestyle. It can be precluded that more studies should be conducted to establish interactive responses of biotic and abiotic environmental factors on quality attributes of herbal teas.
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