geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The vitamin B12 content of meals and items of diet


, : The vitamin B12 content of meals and items of diet. British Journal of Nutrition 29(1): 65-72

Portions of prepared food were homogenised with water before estimation of vitamin B-12 by the Euglena gracilis method of Hutner, Bach and Ross (Journal of Protozoology (1956) 3, 101). Samples were tested in duplicate on 2 occasions and recovery tubes were set up with each experiment. The result of the second assay had to be within 20% of the first. Means and ranges with SD are shown for a number of foods cooked or otherwise as served, most of them prepared in a hospital kitchen. All 45 meals examined had vitamin B-12 values greater than 0.1 mu g, with a range from 0.11 for chicken croquettes to 77.1 for liver and sausages. In addition to the direct assay, results were calculated by reference to the tables of McCance and Widdowson (1969). In 25 cases out of 45, the tabulated values were lower than those obtained by analysis. It was calculated that about 1.7 mu g/day would be absorbed from a hospital diet in which all the items studied were acceptable.

US$19.90

PMID: 4739315

DOI: 10.1079/bjn19730078


Other references

Hunsaker, W.G.; Reiser, B.; Wolynetz, M., 1977: Vaginal temperature rhythms in sheep. Six ovariectomized adult sheep were tethered in a temperature--and light--controlled room and given feed and water ad lib. Vaginal temperatures were recorded at 10m intervals for 12 or 17d. Hourly means were calculated and subjected to statistical...

Straight, C.R.; Brady, A.O.; Evans, E.M., 2016: Muscle quality and relative adiposity are the strongest predictors of lower-extremity physical function in older women. The aim of this study was to examine the relative contributions of physical activity, adiposity, lean mass and muscle quality to lower-extremity physical function (LEPF) in older women. Cross-sectional analysis at a university research laboratory....

Behm, G., 1982: Regulation of additives in the European Economic Community Feeds.1. Kraftfutter 65(4): 130

Byrne, J.E.; Dresel, P.E., 1970: The efficacy of antiarrhythmic drugs in the prevention of recurrence of aconitine-induced atrial fibrillation after electrical conversion. Canadian Journal of Physiology and Pharmacology 48(2): 90-97

Brazdovicova B.; Kostalova D.; Tomko J.; Jin H.Y., 1980: Isolation and identification of alkaloids from fruits of berberis thunbergii. Two major bisbenzylisoquinoline alkaloids, isotetrandrine and berbamine; and 3 protoberberine type alkaloids.sbd.berberine, palmatine and jatrorrhizine were isolated from seeds of B. thunbergii. Berberine and oxyberberin, which is not present in t...

Kim, K.H.; Chung, P.S.; Rhee, C.S.; Kim, W.H., 1994: The manifestation of proliferating cell nuclear antigen in adenoid cystic carcinoma. Objective: This study was conducted to evaluate the prognostic value of immunostaining with a genetically engineered monoclonal antibody (PC10) to proliferating cell nuclear antigen in patients with adenoid cystic carcinoma (ACC). Design: Formalin...

Khosravi, J.; Krishna, R.G.; Khaja, N.; Bodani, U.; Diamandi, A., 2004: Enzyme-linked immunosorbent assay of total inhibin: direct determination based on inhibin alpha subunit-specific monoclonal antibodies. Objective: Inhibin circulates in various molecular weight forms. Alpha (alpha)-subunit-directed total inhibin immunoassays, which detect all forms of a subunits plus the alpha/beta inhibin dimers, have been found valuable in the diagnosis and moni...

Proia, D.A.; Bates, R.C., 2014: Ganetespib and HSP90: translating preclinical hypotheses into clinical promise. As with many physiologic processes that become subverted during tumorigenesis, the chaperoning activity of heat shock protein 90 (HSP90) is often exploited by cancer cells to confer aberrant proliferative, survival, and/or metastatic potential. Fu...

Ikebuchi, M.; Takeuchi, K.; Yamane, T.; Ogikubo, O.; Maeda, T.; Kimura, H.; Ohkubo, I., 2005: Primary structure and properties of Mn-superoxide dismutase from scallop adductor muscle. Manganese-superoxide dismutase was purified to homogeneity from scallop adductor muscle using DEAE-Sephacel, Buthyl-Cellulofine and Superdex 200pg column Chromatographies. The molecular weights of the purified enzyme were calculated to be 22,321.4...

van der Heijden, L.C.; Kok, M.M.; Löwik, M.M.; Danse, P.W.; Jessurun, G.A.J.; Hartmann, M.; Stoel, M.G.; van Houwelingen, K.Gert.; Hautvast, R.W.M.; Linssen, G.C.; Doggen, C.J.M.; von Birgelen, C., 2017: Three-Year Clinical Outcome of Patients with Coronary Disease and Increased Event Risk Treated with Newer-Generation Drug-Eluting Stents: From the Randomized DUTCH PEERS Trial. Limited data is available on the long-term outcome of patients with increased cardiovascular event risk, treated with newer-generation durable polymer drug-eluting stents (DES). We therefore assessed 3-year follow-up data of high-risk versus low-...