True Protein Digestibility and Digestibility-Corrected Amino Acid Score of Red Kidney Beans (Phaseolus vulgaris L.)

1995 ◽  
Vol 43 (5) ◽  
pp. 1295-1298 ◽  
Author(s):  
Wu Wu ◽  
Woodie P. Williams ◽  
M. Elizabeth Kunkel ◽  
James C. Acton ◽  
Yun Huang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Phaseolus Vulgaris ◽  
Protein Digestibility ◽  
Phaseolus Vulgaris L ◽  
Kidney Beans ◽  
Amino Acid Score ◽  
Red Kidney Beans ◽  
True Protein ◽  
True Protein Digestibility

scholarly journals Brief Research Report: Estimation of the Protein Digestibility-Corrected Amino Acid Score of Defatted Walnuts

2021 ◽  
Vol 8 ◽  
Author(s):  
Kimberly A. Lackey ◽  
Stephen A. Fleming
Keyword(s):  
Amino Acid ◽  
Protein Quality ◽  
Essential Fatty Acids ◽  
Protein Digestibility ◽  
Research Report ◽  
Tree Nuts ◽  
Amino Acid Score ◽  
True Protein ◽  
True Protein Digestibility

Introduction: Walnuts are considered a good source of essential fatty acids, which is unique among tree nuts. Walnuts are also composed of about 10–15% protein, but the quality of this protein has not been evaluated. Pistachios and almonds have been evaluated for their protein content using a protein digestibility-corrected amino acid score (PDCAAS), but it is unclear how the quality of protein in walnuts relates to that in other commonly consumed tree nuts. The objective of this study was to substantiate the protein quality of walnuts by determining their PDCAAS.Methods: A small, 10-day dietary intervention trial was conducted using male Sprague-Dawley rats (n = 8, 4 per group) with two diets: a nitrogen-free diet and a diet containing protein exclusively from defatted walnuts. Feed intake and fecal output of nitrogen were measured to estimate the true protein digestibility, and the amino acid compositions of walnuts compared to child and adult populations were used to calculate amino acid scores (AAS) and PDCAAS.Results: The true protein digestibility score of raw walnuts was calculated to be 86.22%. Raw walnuts contained 15.6 g protein/g walnut with AAS of 0.45 and 0.63 for children aged 6 months to 3 years and 3–10 years, respectively. For each population, a PDCAAS of 39 and 46% was calculated, respectively, using a protein conversion constant of 5.30. Using a protein constant of 6.25, a PDCAAS of 39% (6 months - 3 years) or 46% (3-10 years) was calculated.Conclusions: This is the first known assessment of the PDCAAS of walnuts. Like almonds, they appear to have a low-to-moderate score, indicating they are not a quality source of protein.

Amino Acid Availability and Availability-Corrected Amino Acid Score of Red Kidney Beans (PhaseolusvulgarisL.)

1996 ◽  
Vol 44 (5) ◽  
pp. 1296-1301 ◽  
Author(s):  
Wu ◽  
Woodie P. Williams ◽  
M. Elizabeth Kunkel ◽  
James C. Acton ◽  
Yun Huang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Availability ◽  
Kidney Beans ◽  
Amino Acid Score ◽  
Red Kidney Beans

Distribution of chromium in red kidney beans (Phaseolus vulgaris L.)

1981 ◽  
Vol 37 (7) ◽  
pp. 718-720 ◽  
Author(s):  
V. Ramachandran ◽  
T. J. D'Souza ◽  
K. B. Mistry
Keyword(s):  
Phaseolus Vulgaris ◽  
Phaseolus Vulgaris L ◽  
Kidney Beans ◽  
Red Kidney Beans

Nutritional evaluation of biologically treated white kidney beans (Phaseolus vulgaris L.) in pigs: ileal and amino acid digestibility.

1997 ◽  
Vol 75 (12) ◽  
pp. 3187 ◽  
Author(s):  
H Schulze ◽  
F H Savelkoul ◽  
M W Verstegen ◽  
A F van der Poel ◽  
S Tamminga ◽  
...  
Keyword(s):  
Amino Acid ◽  
Phaseolus Vulgaris ◽  
Phaseolus Vulgaris L ◽  
Nutritional Evaluation ◽  
Kidney Beans

Effect of Atrazine on Elongation of the Embryonic Axis of Red Kidney Bean

Weed Science ◽  
1974 ◽  
Vol 22 (3) ◽  
pp. 227-229 ◽  
Author(s):  
Parshall B. Bush ◽  
S. K. Ries
Keyword(s):  
Protein Synthesis ◽  
Amino Acid ◽  
Phaseolus Vulgaris ◽  
Embryonic Axis ◽  
Amino Acid Incorporation ◽  
Kidney Beans ◽  
Acid Incorporation ◽  
Red Kidney Bean ◽  
Red Kidney Beans ◽  
Stimulation Of

Atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] at a concentration of 10−8M stimulated the elongation of the embryonic axis of red kidney beans (Phaseolus vulgarisL. ‘Charlevoix’). This stimulation of elongation was accompanied by a light-independent increase in protein synthesis as measured by radioactive amino acid incorporation.

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