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| Content Provider | Springer Nature Link |
|---|---|
| Author | Cock, I. E. Vuuren, S. F. |
| Copyright Year | 2015 |
| Abstract | Many South African plants are used as both foods and traditional medicines for the treatment of diarrhoea and dysentery. A survey of edible plants for natural preservative/functional food potential was undertaken on native South African plants with a history of medicinal usage. Sixty six extracts from 29 plant species were investigated for the ability to inhibit the growth of bacteria and fungi associated with food spoilage and food poisoning. Of these, 27 of the 29 plant species tested (93.1 %) inhibited the growth of at least one of the Gram-negative bacteria tested, compared with 23 of the 29 (79.3 %) plants tested inhibiting the growth of at least one Gram-positive bacterium, and seven of the 29 (24.1 %) plants tested inhibiting the growth of at least one fungal species. In general, the methanol plant extracts were better antimicrobial agents than the water extracts, as determined by the disc diffusion minimum inhibitory concentration (MIC) method. Syzygium cordatum, Terminalia pruinoides and Terminalia sericea extracts were particularly effective, with broad-spectrum antimicrobial activity and MIC values generally significantly below 1000 μg/ml. Extracts of these plants were generally more potent antimicrobial agents than the control antibiotics, with significantly lower MIC values. All extracts exhibiting bacterial and fungal inhibitory activity were also shown to be non-toxic, or of low toxicity in the Artemia nauplii bioassay. The low toxicity of these extracts and their inhibitory bioactivity against bacteria and fungi associated with food spoilage/poisoning indicate their potential as natural food preservatives. |
| Starting Page | 6879 |
| Ending Page | 6899 |
| Page Count | 21 |
| File Format | |
| ISSN | 00221155 |
| Journal | Journal of Food Science and Technology |
| Volume Number | 52 |
| Issue Number | 11 |
| e-ISSN | 09758402 |
| Language | English |
| Publisher | Springer India |
| Publisher Date | 2015-03-22 |
| Publisher Place | New Delhi |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | South African plants Medicinal plants Antimicrobial activity Food spoilage Food poisoning Food Science Nutrition Chemistry/Food Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Food Science |
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