Abstract
Yam (Dioscorea sp.) is a popular tuber in Cameroon, where it is grown for both food and income. One of the most challenging aspects of the long-term storage of yam tubers is post-harvest spoilage, often caused by fungi. The use of post-harvest chemicals on yam tubers is not a matter of course. The present study evaluated the efficacy of aqueous extract and powder of Zingiber officinale against fungi associated with the storage rot of yam. The fungi were isolated from two yam cultivars, “Calabar” and “Ghana”, from three localities in Cameroon. The antifungal activity of the aqueous extract and ginger powder was studied in vivo on slices of yam tubers. The results obtained showed that eight fungi were associated with yam tubers and exhibited typical rotting symptoms. The most prevalent and virulent fungus was Penicillium sp., which caused decay volumes of 12.76 cm3 and 8.74 cm3 for “Calabar” and “Ghana” cultivars, respectively. Fungal spoilage was greatly reduced by the application of aqueous extract and ginger powder. The aqueous extract tested at the 30% dose was more effective with up to 80% inhibition. However, the ginger powder was more effective against Penicillium sp., Aspergillus niger, and Colletotrichum sp. associated with rot in the variety “Ghana” with total inhibition (100%). Therefore, the aqueous extracts and powder of Zingiber officinale can be used as a bio fungicide to improve the shelf life of yam tubers.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Eight fungi were associated with rotting yam tubers.
Verbatim
e0“eight fungi were associated with yam tubers and exhibited typical rotting symptoms”
Claim · model-written summary
Penicillium sp. was the most prevalent and virulent fungus on yam.
- Taxon
- yamt0
- Interactor
- Penicillium sp.
Penicilliume0pathogen - Outcome
- most prevalent and virulent funguse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most prevalent and virulent fungus was Penicillium sp.”
t0“yam tuber”
Claim · model-written summary
Penicillium sp. caused 12.76 cm3 of decay in Calabar yam.
- Taxon
- yamt0
- Material
- Calabare0
- Interactor
- Penicillium sp.Penicilliume0pathogen
- Outcome
- decay volumese0
- Value
- 12.76 cm3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Penicillium sp., which caused decay volumes of 12.76 cm3 and 8.74 cm3 for “Calabar” and “Ghana” cultivars, respectively”
t0“yam tuber”
Claim · model-written summary
Penicillium sp. caused 8.74 cm3 of decay in Ghana yam.
- Taxon
- yamt0
- Material
- Ghanae0
- Interactor
- Penicillium sp.Penicilliume0pathogen
- Outcome
- decay volumese0
- Value
- 8.74 cm3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Penicillium sp., which caused decay volumes of 12.76 cm3 and 8.74 cm3 for “Calabar” and “Ghana” cultivars, respectively”
t0“yam tuber”
Claim · model-written summary
Aqueous ginger extract reduced fungal spoilage of yam.
- Taxon
- yamt0
- Treatment
- aqueous extracte0
- Interactor
- fungale0pathogen
- Outcome
- Fungal spoilagee0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Fungal spoilage was greatly reduced by the application of aqueous extract and ginger powder.”
t0“yam tuber”
Claim · model-written summary
Ginger powder reduced fungal spoilage of yam.
- Taxon
- yamt0
- Treatment
- ginger powdere0
- Interactor
- fungale0pathogen
- Outcome
- Fungal spoilagee0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Fungal spoilage was greatly reduced by the application of aqueous extract and ginger powder.”
t0“yam tuber”
Claim · model-written summary
Aqueous ginger extract at 30% achieved up to 80% inhibition.
- Taxon
- yamt0
- Treatment
- aqueous extract tested at the 30% dosee0
- Outcome
- inhibitione0
- Direction
- more effectivee0
- Value
- 80%e0
Not reportedComparator
Verbatim
e0“The aqueous extract tested at the 30% dose was more effective with up to 80% inhibition.”
t0“yam tuber”
Claim · model-written summary
Ginger powder completely inhibited Penicillium sp. rot in Ghana yam.
- Taxon
- yamt0
- Material
- Ghanae0
- Treatment
- ginger powdere0
- Interactor
- Penicillium sp.Penicilliume0pathogen
- Outcome
- rote0
- Direction
- total inhibitione0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ginger powder was more effective against Penicillium sp., Aspergillus niger, and Colletotrichum sp. associated with rot in the variety “Ghana” with total inhibition (100%)”
t0“yam tuber”
Claim · model-written summary
Ginger powder completely inhibited Aspergillus niger rot in Ghana yam.
- Taxon
- yamt0
- Material
- Ghanae0
- Treatment
- ginger powdere0
- Interactor
- Aspergillus niger
Aspergillus nigere0pathogen - Outcome
- rote0
- Direction
- total inhibitione0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ginger powder was more effective against Penicillium sp., Aspergillus niger, and Colletotrichum sp. associated with rot in the variety “Ghana” with total inhibition (100%)”
t0“yam tuber”
Claim · model-written summary
Ginger powder completely inhibited Colletotrichum sp. rot in Ghana yam.
- Taxon
- yamt0
- Material
- Ghanae0
- Treatment
- ginger powdere0
- Interactor
- Colletotrichum sp.
Colletotrichume0pathogen - Outcome
- rote0
- Direction
- total inhibitione0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ginger powder was more effective against Penicillium sp., Aspergillus niger, and Colletotrichum sp. associated with rot in the variety “Ghana” with total inhibition (100%)”
t0“yam tuber”
Claim · model-written summary
The authors propose aqueous ginger extract for extending yam shelf life.
Verbatim
e0“the aqueous extracts and powder of Zingiber officinale can be used as a bio fungicide to improve the shelf life of yam tubers”
Claim · model-written summary
The authors propose ginger powder for extending yam shelf life.
Verbatim
e0“the aqueous extracts and powder of Zingiber officinale can be used as a bio fungicide to improve the shelf life of yam tubers”
The same questions in other papers
botanical · Aspergillus niger · DioscoreaResults agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →botanical · disease · DioscoreaResults agree
9 papers in the same direction as this paper
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →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.