Abstract
Cassava (Manihot esculenta) is a principal food for large populations of poor people in the tropics and subtropics. Its edible roots are poor in protein and lack several essential amino acids. Interspecific hybrids may acquire high protein characteristics from wild species. We analyzed 19 hybrids of M. esculenta with its wild relative, M. oligantha, for crude protein, amino acid profile, and total cyanide. Some hybrids produced roots with high protein content of up to 5.7%, while the common cultivar that we examined had just 2.3% crude protein. The essential amino acids alanine, phenylalanine, and valine were detected in the hybrids. The sulfur-containing amino acids cysteine and methionine were found at relatively high concentrations in the roots of 4 hybrids. The proportion of lysine in one hybrid was 20 times higher than in the common cultivar. The levels of total cyanide ranged from 19.73 to 172.56 mg/kg and most of the roots analyzed were classified as "non-toxic" and "low toxic". Furthermore, 2 progenies showed reasonable levels of cyanide, but higher protein content and amino acid profile more advantageous than the common cassava.
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Claims 7
Claim · model-written summary
Some hybrids reached 5.7% root protein versus 2.3% in the common cultivar.
- Taxon
- Cassava
Manihot esculentat0 - Material
- hybridse0
- Organ / stage
- rootse0
- Outcome
- protein contente0
- Direction
- highe0
- Value
- 5.7%e0
- Qualifier
- 2.3% crude proteine0
- Comparator
- common cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some hybrids produced roots with high protein content of up to 5.7%, while the common cultivar that we examined had just 2.3% crude protein.”
t0“Cassava”
Claim · model-written summary
Alanine, phenylalanine and valine were detected in hybrids.
- Taxon
- CassavaManihot esculentat0
- Material
- hybridse0
- Outcome
- alanine, phenylalanine, and valinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The essential amino acids alanine, phenylalanine, and valine were detected in the hybrids.”
t0“Cassava”
Claim · model-written summary
Four hybrids had relatively high cysteine and methionine in roots.
- Taxon
- CassavaManihot esculentat0
- Material
- hybridse0
- Organ / stage
- rootse0
- Outcome
- cysteine and methioninee0
- Direction
- relatively highe0
- Value
- 4 hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sulfur-containing amino acids cysteine and methionine were found at relatively high concentrations in the roots of 4 hybrids.”
t0“Cassava”
Claim · model-written summary
One hybrid had a lysine proportion 20 times higher than the common cultivar.
- Taxon
- CassavaManihot esculentat0
- Material
- one hybride0
- Outcome
- proportion of lysinee0
- Direction
- highere0
- Value
- 20 timese0
- Comparator
- common cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportion of lysine in one hybrid was 20 times higher than in the common cultivar.”
t0“Cassava”
Claim · model-written summary
Total cyanide ranged from 19.73 to 172.56 mg/kg.
- Taxon
- CassavaManihot esculentat0
- Outcome
- levels of total cyanidee0
- Direction
- rangede0
- Value
- 19.73 to 172.56 mg/kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of total cyanide ranged from 19.73 to 172.56 mg/kg”
t0“Cassava”
Claim · model-written summary
Most analyzed roots were classified as non-toxic or low toxic.
- Taxon
- CassavaManihot esculentat0
- Organ / stage
- rootse0
- Outcome
- classified as "non-toxic" and "low toxic"e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most of the roots analyzed were classified as "non-toxic" and "low toxic".”
t0“Cassava”
Claim · model-written summary
Two progenies combined reasonable cyanide with higher protein and more advantageous amino acids than common cassava.
- Taxon
- cassavaManihot esculentae0
- Material
- progeniese0
- Outcome
- reasonable levels of cyanide, but higher protein content and amino acid profile more advantageouse0
- Direction
- highere0
- Value
- 2 progeniese0
- Comparator
- common cassavae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2 progenies showed reasonable levels of cyanide, but higher protein content and amino acid profile more advantageous than the common cassava.”