Skip to main content Accessibility help
×
Home

The digestibility of English and Canadian wheats with special reference to the digestibility of wheat protein by man

  • R. A. McCance (a1) and E. M. Widdowson (a1)

Extract

1. Two men and four women carried out digestibility experiments on English and Canadian wheats at 90 and 80% extractions. The flour was the only source of protein and contributed 77−93% of the total dietary calories.

2. At 90% extraction the digestibility of the diets in terms of calories was unaffected by the source of the flour and amounted to 93·3%. At 80% extraction the digestibility of the diet containing English wheat amounted to 95·6% and of those containing Manitoba wheat to 96·7%. The difference is attributed to mild intestinal upsets on the English flour.

3. The apparent digestibility of the protein depended upon the amount of N in the wheat and fell as the extraction rose. A quantitative analysis of the results indicates that the protein in wheat flour of 90 and 80% extraction is completely digested and absorbed, and that the N found in the faeces is entirely derived from the secretions of the gut.

The Medical Research Council paid for the expenses of this investigation. We are very much indebted to Drs T. Moran, C. R. Jones and other members of the Cereals Research Station, St Albans, without whose help this study would hardly have been possible. We have also very much appreciated the help we have received from the subjects, Miss M. Costain, Miss C. M. Walsham, Miss E. Wilkinson and Mr R. Tayler, and also from Flt.-Sergeant Childs, who kindly made the bomb calorimeter determinations.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      The digestibility of English and Canadian wheats with special reference to the digestibility of wheat protein by man
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      The digestibility of English and Canadian wheats with special reference to the digestibility of wheat protein by man
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      The digestibility of English and Canadian wheats with special reference to the digestibility of wheat protein by man
      Available formats
      ×

Copyright

References

Hide All
Boas-Fixsen, M. A. & Jackson, H. M. (1932). Biochem. J. 26, 1919.
Hutchinson, J. C. D. & Morris, S. (1936). Biochem. J. 30, 1682.
Jacquot, R. & Guillemet, R. (1944). Rec. Trav. Inst. Nat. Hyg. 1, vol. 3, p. 177.
Macrae, T. F., Hutchinson, J. C. D., Irwin, J. O., Bacon, J. S. D. & McDougall, E. I. (1942). J. Hyg., Camb., 42, 423.
Martin, C. J. & Robison, R. (1922). Biochem. J. 16, 407.
McCance, R. A. & Shipp, H. (1933). Spec. Rep. Ser. Med. Res. Coun., Lond., no. 187.
McCance, R. A. & Widdowson, E. M. (1942). J. Physiol. 101, 44.
McCance, R. A. & Widdowson, E. M. (1945). Spec. Rep. Ser. Med. Res. Coun., Lond., no. 213 (second edition).
McCance, R. A., Widdowson, E. M., Moran, T., Pringle, W. J. S. & Macrae, T. F. (1945). Biochem. J. 39, 213.
Mitchell, H. H. (1924). J. Biol. Chem. 58, 873.
Newman, L. F., Robinson, G. W., Halnan, E. T. & Neville, H. A. D. (1912). J. Hyg., Camb., 12, 119.
Reifenstein, E. C. (1944). Report on Conference on metabolic aspects of convalescence including bone and wound healing (8th meeting, 13 10).
Rubner, M. (1916). Arch. Anat. Physiol. (Physiol. Abt.), Jahrg. 1916, p. 61.
Rubner, M. (1918). Arch. Anat. Physiol. (Physiol. Abt.), Jahrg. 1918, p. 53.
Schneider, B. H. (1934). Biochem. J. 28, 360.
Snyder, H. (1901). Bull. U.S. Off. Exp. Stas. no. 101. Washington: Gov. Printing Office.
Snyder, H. (1905). Bull. U.S. Off. Exp. Stas. no. 156. Washington: Gov. Printing Office.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed