Browsing by Author "Matrose, Albertina Neliswa"

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    Antimicrobial efficacy of Helichrysum spp. on post-harvest diseases of pomegranate fruit
    (University of the Western Cape, 2024) Matrose, Albertina Neliswa; Obikeze, Kenechukwu
    Fungal pathogens are the major contributors to losses of horticultural produce, which poses a threat to the global food security. The solution to reducing food decay caused by fungal pathogens mainly relies with crop and plant protection which include the aggressive usage of chemical fungicides and other cost-effective postharvest strategies which are associated with significant health, safety, and environmental implications. Numerous investigations have been undertaken on the effects of crude plant extracts as safe, cost-effective, and yet effective strategies for post-harvest management of fungal pathogens. According to Gurjar et al. (2012), under stressful conditions, plants strategically generate secondary metabolites for their defence strategy against predators. Some of these compounds have been tested and proven to exhibit intense activity against numerous fungal pathogens. This study aimed to utilize in vitro and in vivo of Helichrysum odoratissimum and Helichrysum patulum to identify potential bioactive compounds that can be used as alternatives fungicidal agents to synthetic chemicals for post-harvest management of Botrytis cinerea. Moreover, the influence of geographical harvest location, extraction solvent types, and processing methods were investigated. Detailed literature search on the plant extracts and natural compounds as potential alternative treatment for post-harvest fungal pathogens was performed.
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    Evaluation of the antioxidant and anti-diabesity potential of cyclopia maculata using in vitro non-cell based screening models
    (University of the Western Cape, 2014) Matrose, Albertina Neliswa; Syce, James A.; Joubert, E; Malherbe, C.J
    The aim of this study was therefore to evaluate the antioxidant and anti-diabesity potential of a hot water extract of C. maculata in non-cell based assays and correlate the activities with phenolic composition. Total antioxidant capacity (TAC) was assessed in terms of free radical scavenging and iron reducing ability. The DPPH, ABTS, ORAC and FRAP assays were employed. Anti-diabesity potential was assessed in terms of the inhibition of the digestive enzymes, α-glucosidase and pancreatic lipase
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    Evaluation of the antioxidant and anti-diabesity potential of cyclopia maculata using in vitro non-cell based screening models
    (University of the Western Cape, 2014) Matrose, Albertina Neliswa; Syce, James A.; Joubert, E; Malherbe, C.J
    The aim of this study was therefore to evaluate the antioxidant and anti-diabesity potential of a hot water extract of C. maculata in non-cell based assays and correlate the activities with phenolic composition. Total antioxidant capacity (TAC) was assessed in terms of free radical scavenging and iron reducing ability. The DPPH, ABTS, ORAC and FRAP assays were employed. Anti-diabesity potential was assessed in terms of the inhibition of the digestive enzymes, α-glucosidase and pancreatic lipase