Pro-inflammatory enzyme inhibition and antioxidant activity of six scientifically unexplored indigenous plants traditionally used in South Africa to treat wounds

2022 ◽  
Vol 147 ◽  
pp. 119-129
Author(s):  
N. Mbhele ◽  
B. Ncube ◽  
A.R. Ndhlala ◽  
A. Moteetee
Keyword(s):  
South Africa ◽  
Antioxidant Activity ◽  
Enzyme Inhibition ◽  
Indigenous Plants

scholarly journals Evaluation of Factors Influencing the Inclusion of Indigenous Plants for Food Security among Rural Households in the North West Province of South Africa

2020 ◽  
Vol 12 (22) ◽  
pp. 9562
Author(s):  
Abiodun Olusola Omotayo ◽  
Adeyemi Oladapo Aremu
Keyword(s):  
South Africa ◽  
Logistic Regression ◽  
Food Security ◽  
Food System ◽  
Rural Households ◽  
Binary Logistic Regression ◽  
Indigenous Plants ◽  
North West ◽  
The North ◽  
North West Province

Underutilised indigenous plants can support and strengthen the existing food system, as they are considered as socio-economically and environmentally appropriate. These plants generally adapt to marginal conditions, which is essential for a resilient agriculture and sustainable food systems. The current study relied on food security and indigenous plants data collected from some selected rural households from the North West Province of South Africa. The utilised data were collected through a multi-stage sampling technique with the aid of a pre-tested semi-structured questionnaire, while descriptive methods Foster–Greer–Thorbecke (FGT) and binary logistic regression were used for data analysis. The models produced a good fit for the data, and the computed F-value was statistically significant (p < 0.01). The study examined socio-economic and food security status based on the knowledge and the perception of indigenous plants by the households. The incidence of food insecurity (θ0) was 0.4060, indicating that 40.6% of the participants were food insecure while 59.4% were food secured. Binary logistic regression results indicate that factors such as age, gender, educational attainment, inclusion of indigenous plants in diet, food expenditure, and access in the study area impacted results. It was also evident that the participants had considerable knowledge of indigenous plants. However, these indigenous plants were not cultivated or included in the diet by the majority of the participants. The formulation of appropriate holistic policies that support the incorporation of the indigenous plants into the food system is recommended.

scholarly journals Effects of Production Region, Production Systems and Grape Type/Variety on Nutritional Quality Parameters of Table Grapes; Results from a UK Retail Survey

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1874
Author(s):  
Gultakin Hasanaliyeva ◽  
Eleni Chatzidimitrou ◽  
Juan Wang ◽  
Marcin Baranski ◽  
Nikolaos Volakakis ◽  
...  
Keyword(s):  
South Africa ◽  
Antioxidant Activity ◽  
Production System ◽  
Production Systems ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Production Region ◽  
Table Grapes ◽  
Mediterranean Countries ◽  
High Concentrations

Grapes contain high concentrations of secondary metabolites and antioxidants that have been linked to a reduction of several chronic diseases. Here, we report results of a UK retail survey, which investigated the effect of the production region (Mediterranean vs. South Africa), grape type (white vs. red vs. black) and variety, and production system (organic vs. conventional) on antioxidant activity and concentrations of phenolic compounds in table grapes. Black grapes had ~180% total antioxidant activity (TAA), ~60% higher total phenolic content (TPC) and ~40 times higher anthocyanin concentrations (TAC) than white grapes, while red grapes had intermediate levels of TAA, TPC and TAC. The effects of season and production system and differences between varieties of the same grape type were substantially smaller. Grapes imported from Mediterranean countries in summer had a 14% higher TPC and ~20% higher TAA than grapes imported from South Africa in winter, and organic grapes had a 16% higher TPC and 22% higher TAA, but ~30% lower TAC than conventional grapes. Significant differences in TPC, TAA and/or TAC between organic and conventional grapes could only be detected for specific grape types, varieties and/or sampling years.

scholarly journals Soil Parameters Affecting the Antioxidant Activity of Hypoxis hemerocallidea Corm Extracts in Different Areas of South Africa

2020 ◽  
Vol 32 (6) ◽  
pp. 1467-1472
Author(s):  
N.M. Mkolo ◽  
O.O. Olaokun ◽  
J.O. Olowoyo ◽  
J.N. Eloff ◽  
V. Naidoo
Keyword(s):  
Heavy Metals ◽  
South Africa ◽  
Antioxidant Activity ◽  
Environmental Conditions ◽  
Soil Parameters ◽  
Potential Danger ◽  
Soil Heavy Metals ◽  
Geographical Regions ◽  
High Antioxidant Activity ◽  
Hypoxis Hemerocallidea

Hypoxis hemerocallidea is wild harvested and widely used due inter alia to its strong antioxidant activity. Antioxidant activity is linked to plant stressors like soil heavy metals concentrations and pH. If high antioxidant activity is caused by heavy metals stressing the plant, the plant may not be completely safe. Soils and H. hemerocallidea corms were collected from five different geographical regions of South Africa. The highest corm and soil heavy metals concentration were Fe, Mn and Cr, with Fe having the highest, particularly for corms collected from Ga-rankuwa (83.7 ± 0.03 μg/g). The soil and corm samples from Ga-rankuwa with high levels of metals (Fe, Cr, Ni, Pb) had greater antioxidant activity (EC50 of 1.68 ± 0.49 μg/mL). Despite corms showing ability to bio-accumulate heavy metals, the antioxidant activity could not be linked to environmental conditions. The results highlight potential danger of using naturally harvested bulbs growing in unidentified soils

Antioxidant activity of selected plants of the Great Fish River Reserve,Eastern Cape, South Africa

2010 ◽  
Vol 27 (2) ◽  
pp. 109-112 ◽  
Author(s):  
A H Kgopa ◽  
S I Bulani ◽  
B S Wilhelmi ◽  
J M Brand
Keyword(s):  
South Africa ◽  
Antioxidant Activity ◽  
Eastern Cape
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