Abstract
Background: Senna didymobotrya grows naturally in East Africa and is commonly used to treat microbial infections by African communities due to the presence of various phytochemicals such as alkaloids, terpenoid, anthraquinones, tannins, saponins, phenols and flavonoids. Objective: This study was conducted to evaluate the effectiveness of the crude extract of candle brush (Senna didymobotrya) leaves against Aspergillus niger in the reduction of post-harvest losses in tomatoes. Methods: A completely randomised design with two treatments, each replicated six times was used. In this study. Dried leaves were ground into a fine powder and extracted using the Soxhlet apparatus with 100% methanol. The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of the extract were determined against Aspergillus niger. The shelf life of tomatoes was determined by spraying the extract reconstituted in water at 0.4 g/ml and further analysed the total viable counts at three-day intervals and checking for the growth of mould, colour changes and odours as indicators of spoilage. Results: After extraction 22 g of the crude extract was obtained from the dried leaves The MIC and MFC of the methanol crude extract against Aspergillus niger were 0.04 g/ml. The shelf life of the treated tomatoes was 14 days while for the untreated was 9 days. T-test results at (P0.05) showed a significant difference between the treated and untreated samples based on the total viable counts. Conclusion: The crude extract of the candle brush inhibited the growth of Aspergillus niger in fresh tomatoes and also prolonged the shelf life of tomatoes for 14 days. Further studies should be done to evaluate the market acceptability of the tomatoes.
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Claims 6
Claim · model-written summary
The extract yielded 22 g after extraction.
- Taxon
- Senna didymobotrya
Senna didymobotryat0 - Outcome
- crude extracte0
- Value
- 22 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After extraction 22 g of the crude extract was obtained from the dried leaves”
t0“Senna didymobotrya”
Claim · model-written summary
The methanol extract inhibited Aspergillus niger at an MIC of 0.04 g/ml.
- Taxon
- Aspergillus niger
Aspergillus nigere0 - Treatment
- methanol crude extracte0
- Outcome
- MICe0
- Value
- 0.04 g/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MIC and MFC of the methanol crude extract against Aspergillus niger were 0.04 g/ml.”
Claim · model-written summary
The methanol extract had an MFC of 0.04 g/ml against Aspergillus niger.
- Taxon
- Aspergillus nigerAspergillus nigere0
- Treatment
- methanol crude extracte0
- Outcome
- MFCe0
- Value
- 0.04 g/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MIC and MFC of the methanol crude extract against Aspergillus niger were 0.04 g/ml.”
Claim · model-written summary
Extract-treated tomatoes had a 14-day shelf life versus 9 days untreated.
- Taxon
- tomatoes
Solanum lycopersicume0 - Treatment
- treated tomatoese0
- Outcome
- shelf lifee0
- Value
- 14 dayse0
- Qualifier
- 9 dayse0
- Comparator
- untreatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shelf life of the treated tomatoes was 14 days while for the untreated was 9 days.”
Claim · model-written summary
Total viable counts differed significantly between treated and untreated tomatoes.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- treatede0
- Outcome
- total viable countse0
- Comparator
- untreated samplese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T-test results at (P0.05) showed a significant difference between the treated and untreated samples based on the total viable counts.”
t0“tomatoes”
Claim · model-written summary
Candle brush extract inhibited Aspergillus niger growth in fresh tomatoes.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- crude extract of the candle brushe0
- Interactor
- Aspergillus nigerAspergillus nigere0pathogen
- Outcome
- growth of Aspergillus nigere0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The crude extract of the candle brush inhibited the growth of Aspergillus niger in fresh tomatoes”
The same questions in other papers
botanical · Aspergillus niger · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.