+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Bioavailability of energy, nitrogen, fat, zinc, iron and calcium from rural and urban Mexican diets



Bioavailability of energy, nitrogen, fat, zinc, iron and calcium from rural and urban Mexican diets



British Journal of Nutrition 68(1): 45-58



The availabilities of nutrients from a representative rural Mexican diet (RMD) and a representative urban Mexican diet (UMD) were evaluated by balance experiments in sixteen Mexican women. Compared with UMD, the plant-based RMD led to a higher number of defaecations and higher faecal excretion of dry matter, fat, nitrogen and energy. Apparent digestibility of N from RMD was only 67% compared with 90% from UMD. N balance was 0.4 and 2.6 g/d with RMD and UMD respectively (P < 0.001). Apparent digestibility of energy was 89 and 95% from RMD and UMD respectively (P < 0.001). Calculation of the metabolizable energy (ME) using Atwater's (Atwater & Bryant, 1900) general factors overestimates the determined ME in RMD by 8%. The Food and Agriculture Organization/World Health Organization/United Nations University (World Health Organization, 1985) recommended factors for correction of digestibility of fibre intake overestimate energy and protein absorption from RMD. The diets provided similar amounts of zinc, and its apparent absorption from RMD was 0.5 mg/d (4.6%) and its balance was 0.1 mg/d. This compared with values for UMD of 1.6 mg/d (16%) and 1.2 mg/d respectively. Iron intake was higher from RMD (17.4 v. 11.6 mg/d; P < 0.01), but apparent absorption was 17 v. 35% and balance was 2.7 and 3.8 mg/d (P < 0.001) for RMD and UMD respectively. RMD also contained more calcium (745 v. 410 mg/d) but apparent absorption from RMD was negative (-136 v. 15 mg/d) and balance was more negative (-197 v. -77 mg/d; P < 0.05). Thus, the content of these minerals is not low in the rural diet but their bioavailabilities are poor.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 002036293

Download citation: RISBibTeXText

PMID: 1390616

DOI: 10.1079/bjn19920065


Related references

Energy and life. Smith, C And E J Wood (Ed ) Molecular And Cell Biochemistry: Energy in Biological Systems Xii+171p Chapman And Hall: London, England, Uk; New York, New York, Usa Illus Paper 1-17, 1991

Use of Size for Early Detection of Juvenile Hatchery Steelhead Destined to Be Precocious Males. North American Journal of Aquaculture 65(4): 8-23, 2003

Bioavailability of iron by invitro method - I - from selected foods and effect of fortification, promotors and inhibitors. Indian journal of nutrition and dietetics 22(3): 68-72, 1985

High yields of non-fertilized protein-rich pigeon peas on tropical soils of low inherent fertility of Puerto Rico: an explanation of a paradox. Journal of agriculture of the University of Puerto Rico Puerto Rico Agricultural Experiment Station 65(1): 21-28, 1981

Calcium, calcium oxalate crystals, and leaf differentiation in the common bean (Phaseolus vulgaris L.). Botanica Acta 108(2): 144-148, 1995

Metabolic balance studies in premature infants. Clinics in Perinatology 22(1): 177-193, 1995

Zinc Intake and Risk of Prostate Cancer: Case-Control Study and Meta-Analysis. Plos one 11(11): E0165956, 2016

Zinc, future mono/adjunctive therapy for depression: Mechanisms of antidepressant action. Pharmacological Reports 67(3): 659-662, 2015

Physiological state of Aedes (Stegomyia) aegypti mosquitoes captured with MosquiTRAPstm in Mirassol, Sao Paulo, Brazil. Journal of Vector Ecology 31(2): 285-291, 2006

Analysis of various artificially produced mutations in homozygous lines of Vorstenland tobacco. Versl. van de 11e Vergadering van de Vereeniging van Proefst.-Personeel. 38-48, 1931

Studies on the bioavailability of tetracycline chloride after oral administration to calves and pigs. Journal Of Veterinary Medicine Series A. 36(4): 261-268, 1989

Bioavailability of iron from micro-encapsulated iron sprinkle supplement. Food and Nutrition Bulletin 23(3 Suppl.): 133-137, 2002

Rural-urban variation in limed maize use and tortilla consumption by women in Guatemala. Ecology of food and nutrition8(4): 279-288, 1992