Abstract
Effect of different processing methods on cyanide content of garri was studied in three improved cassava cultivars (NR 8082, TME 419 and TMS 4(2) 1425) as well as a local unimproved cultivar (Obubit Okpo). Stem cuttings from these cultivars were planted in a randomized complete block design with 4 replications. The experiment was factorial involving three factors, namely cultivars, fertilizer and fermentation days. NPK fertilizer (15:15:15) was applied twice at a rate of 650 kg per hectare. Tubers were harvested at the age of 7 months and their weights taken per stand. The tubers were peeled, grated, fermented (for 1, 2 and 3 days), sieved and fried. Sampling for HCN was done at three stages: immediately after grating the tubers, after fermentation and after frying. Estimation of HCN was done using the silver nitrate volumetric analysis. Our results showed that there was no significant correlation (p>0.05) between cyanogenic glucoside level and crop yield. Fertilizer application significantly (p<0.05) increased the cyanide content of the fried product in all the 4 cultivars. The bulk of cyanide reduction was achieved during fermentation, which was further enhanced by frying. The optimum fermentation days varied with the cultivars; for NR 8082 and the local cultivar it was 3 days while for TMS 4(2) 1425 and TME 419 it was 2 days. It is therefore pertinent to advise that farmers should exercise some restraint in their choice of planting material as well as the processing methods, as the later clearly depends on the former.
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Claims 7
Claim · model-written summary
Cyanogenic glucoside level was not significantly correlated with crop yield.
- Taxon
- cassava
Manihot esculentat0 - Compound
- cyanogenic glucosidee0
- Outcome
- crop yielde0
- Direction
- no significant correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant correlation (p>0.05) between cyanogenic glucoside level and crop yield”
t0“cassava”
Claim · model-written summary
Fertilizer increased cyanide content in fried product across all four cultivars.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Fertilizer applicatione0
- Outcome
- cyanide content of the fried producte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer application significantly (p<0.05) increased the cyanide content of the fried product in all the 4 cultivars”
t0“cassava”
Claim · model-written summary
Most cyanide reduction occurred during fermentation.
- Taxon
- cassavaManihot esculentat0
- Treatment
- fermentatione0
- Outcome
- cyanide reductione0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bulk of cyanide reduction was achieved during fermentation”
t0“cassava”
Claim · model-written summary
Frying further enhanced cyanide reduction.
- Taxon
- cassavaManihot esculentat0
- Treatment
- fryinge0
- Outcome
- cyanide reductione0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bulk of cyanide reduction was achieved during fermentation, which was further enhanced by frying”
t0“cassava”
Claim · model-written summary
The optimal fermentation duration for NR 8082 and the local cultivar was 3 days.
- Taxon
- cassavaManihot esculentat0
- Material
- NR 8082 and the local cultivare0
- Outcome
- optimum fermentation dayse0
- Value
- 3 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum fermentation days varied with the cultivars; for NR 8082 and the local cultivar it was 3 days”
t0“cassava”
Claim · model-written summary
The optimal fermentation duration for TMS 4(2) 1425 and TME 419 was 2 days.
- Taxon
- cassavaManihot esculentat0
- Material
- TMS 4(2) 1425 and TME 419e0
- Outcome
- optimum fermentation dayse0
- Value
- 2 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum fermentation days varied with the cultivars; for NR 8082 and the local cultivar it was 3 days while for TMS 4(2) 1425 and TME 419 it was 2 days”
t0“cassava”
Claim · model-written summary
Authors advised care in cultivar choice and processing method because the latter depends on the former.
- Taxon
- cassavaManihot esculentat0
- Outcome
- choice of planting material as well as the processing methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“farmers should exercise some restraint in their choice of planting material as well as the processing methods, as the later clearly depends on the former”
t0“cassava”
The same questions in other papers
fertilization · molecular: metabolites · Manihot esculenta (cassava)Results differ
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- positive
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