Paper · 2001 · Journal of Food Technology in Africa

In vitro relative protein digestibility and lipoxygenase activity used as parameters to test and compare quality in five varieties of soybean meals.

Elizabeth Maforimbo

13
claims
27
verbatim quotes
5
citations
2
research areas
✓
Open access

Abstract

Proximate composition, In Vitro Relative Protein Digestibility of 5 varieties of soybean (glycine max), was done. Meals from whole seeds and dehulled seeds were both investigated. Stability to photoxidation was also monitored on the oils over a period after sunlight exposure and finally the extent of oil oxidation was determined after 10 months of ambient storage. There was an intervarietal similarity in proximate composition for the whole seeds as confirmed by the low coefficients of variation, i e, 4.73%; 2.23%; 5.09%; 3.87% and 11.76% for moisture, crude protein, ether extract, ash and fibre respectively. An intervarietal similarity was also shown in dehulled seeds with coefficients of variation at 11.9%, 3.49%, 2.3%, 4.0% for moisture, crude protein, ether extract and ash respectively, except for the fibre content which had a higher coefficient of variation of 31.62%. Significant differences in relative protein digestibility were shown among varieties for both the whole and dehulled seeds. Dehulling significantly improved relative digestibility in all varieties as confirmed by the t-test at a 5% level. Nyala variety gave the highest relative protein digestibility both for the whole and dehulled seeds, at 78.03% and 87.02% respectively. The yield of oil after petroleum ether extraction was highest in the Roan and least in the Duiker seed variety at 20.70% and 17.8% respectively. Stability to photoxidation (lipoxygenase activity) for the oils was least in the Duiker variety, giving an E1%1cm (UV absorbance at 232 nm) of 11.26 after 12 hours exposure to sunlight and 62,0 after 10 months of ambient storage. The most stable oil to photoxidation was from the Soma variety giving an E1%1cm of 6.23 after 12 hours of sunlight exposure and 15.63 after ambient storage of 10 months. The t-test indicated that there was no significant difference (P

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Claims 13

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Whole-seed proximate composition showed intervarietal similarity, confirmed by low coefficients of variation.

Taxon
soybeanGlycine maxt0
Organ / stage
whole seedse0
Outcome
proximate compositione0
Qualifier
as confirmed by the low coefficients of variatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“There was an intervarietal similarity in proximate composition for the whole seeds as confirmed by the low coefficients of variation”

✓ located verbatim in the source · abstract, characters 367–499 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Dehulled-seed proximate components showed intervarietal similarity in moisture, crude protein, ether extract and ash.

Taxon
soybeanGlycine maxt0
Organ / stage
dehulled seedse0
Outcome
moisture, crude protein, ether extract and ashe0
Qualifier
with coefficients of variation at 11.9%, 3.49%, 2.3%, 4.0%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“An intervarietal similarity was also shown in dehulled seeds with coefficients of variation at 11.9%, 3.49%, 2.3%, 4.0% for moisture, crude protein, ether extract and ash”

✓ located verbatim in the source · abstract, characters 616–786 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fibre content varied more among dehulled-seed varieties than the other proximate components, with a coefficient of variation of 31.62%.

Taxon
soybeanGlycine maxt0
Outcome
fibre contente0
Direction
highere0
Value
31.62%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“except for the fibre content which had a higher coefficient of variation of 31.62%”

✓ located verbatim in the source · abstract, characters 801–883 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Relative protein digestibility differed significantly among soybean varieties for both whole and dehulled seeds.

Taxon
soybeanGlycine maxt0
Organ / stage
whole and dehulled seedse0
Outcome
relative protein digestibilitye0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Significant differences in relative protein digestibility were shown among varieties for both the whole and dehulled seeds”

✓ located verbatim in the source · abstract, characters 885–1007 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Dehulling significantly improved relative digestibility in all soybean varieties compared with whole seeds.

Taxon
soybeanGlycine maxt0
Treatment
Dehullinge0
Outcome
relative digestibilitye0
Direction
improvede0
Comparator
whole seedse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Dehulling significantly improved relative digestibility in all varieties”

✓ located verbatim in the source · abstract, characters 1009–1081 · show in text ↑
e1

“Meals from whole seeds and dehulled seeds were both investigated”

✓ located verbatim in the source · abstract, characters 114–178 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Nyala had the highest whole-seed relative protein digestibility, 78.03%.

Taxon
soybeanGlycine maxt0
Material
Nyalae0
Organ / stage
wholee0
Outcome
relative protein digestibilitye0
Direction
higheste0
Value
78.03%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Nyala variety gave the highest relative protein digestibility both for the whole and dehulled seeds, at 78.03% and 87.02% respectively”

✓ located verbatim in the source · abstract, characters 1124–1258 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Nyala had the highest dehulled-seed relative protein digestibility, 87.02%.

Taxon
soybeanGlycine maxt0
Material
Nyalae0
Organ / stage
dehulled seedse0
Outcome
relative protein digestibilitye0
Direction
higheste0
Value
87.02%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Nyala variety gave the highest relative protein digestibility both for the whole and dehulled seeds, at 78.03% and 87.02% respectively”

✓ located verbatim in the source · abstract, characters 1124–1258 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Roan had the highest oil yield after petroleum ether extraction, 20.70%.

Taxon
soybeanGlycine maxt0
Material
Roane0
Outcome
yield of oil after petroleum ether extractione0
Direction
higheste0
Value
20.70%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“The yield of oil after petroleum ether extraction was highest in the Roan and least in the Duiker seed variety at 20.70% and 17.8% respectively”

✓ located verbatim in the source · abstract, characters 1260–1403 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Duiker had the least oil yield after petroleum ether extraction, 17.8%.

Taxon
soybeanGlycine maxt0
Material
Duikere0
Outcome
yield of oil after petroleum ether extractione0
Direction
leaste0
Value
17.8%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“The yield of oil after petroleum ether extraction was highest in the Roan and least in the Duiker seed variety at 20.70% and 17.8% respectively”

✓ located verbatim in the source · abstract, characters 1260–1403 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Duiker oil was least stable to photoxidation, with E1%1cm of 11.26 after 12 hours of sunlight exposure.

Taxon
soybeanGlycine maxt0
Material
Duikere0
Treatment
12 hours exposure to sunlighte0
Outcome
E1%1cm (UV absorbance at 232 nm)e0
Direction
leaste0
Value
11.26e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Stability to photoxidation (lipoxygenase activity) for the oils was least in the Duiker variety, giving an E1%1cm (UV absorbance at 232 nm) of 11.26 after 12 hours exposure to sunlight”

✓ located verbatim in the source · abstract, characters 1405–1589 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Duiker oil was least stable to photoxidation, with E1%1cm of 62,0 after 10 months of ambient storage.

Taxon
soybeanGlycine maxt0
Material
Duikere0
Treatment
10 months of ambient storagee0
Outcome
E1%1cm (UV absorbance at 232 nm)e0
Direction
leaste0
Value
62,0e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“Stability to photoxidation (lipoxygenase activity) for the oils was least in the Duiker variety, giving an E1%1cm (UV absorbance at 232 nm) of 11.26 after 12 hours exposure to sunlight and 62,0 after 10 months of ambient storage”

✓ located verbatim in the source · abstract, characters 1405–1633 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Soma oil was the most stable to photoxidation, with E1%1cm of 6.23 after 12 hours of sunlight exposure.

Taxon
soybeanGlycine maxt0
Material
Somae0
Treatment
12 hours of sunlight exposuree0
Outcome
E1%1cme0
Direction
most stablee0
Value
6.23e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“The most stable oil to photoxidation was from the Soma variety giving an E1%1cm of 6.23 after 12 hours of sunlight exposure”

✓ located verbatim in the source · abstract, characters 1635–1758 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Soma oil was the most stable to photoxidation, with E1%1cm of 15.63 after 10 months of ambient storage.

Taxon
soybeanGlycine maxt0
Material
Somae0
Treatment
ambient storage of 10 monthse0
Outcome
E1%1cme0
Direction
most stablee0
Value
15.63e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“in five varieties of soybean meals”

✓ located verbatim in the source · title, characters 113–147 · show in text ↑
e0

“The most stable oil to photoxidation was from the Soma variety giving an E1%1cm of 6.23 after 12 hours of sunlight exposure and 15.63 after ambient storage of 10 months”

✓ located verbatim in the source · abstract, characters 1635–1803 · show in text ↑