Phytate in Foods

Harland, Barbara F.; Oberleas, Donald

doi:10.1159/000415199

Cited by 216 publications

(123 citation statements)

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“…The remaining total Fe intake was assumed to be non-haem Fe. Because we had insufficient information on the phytate content in Japanese food, we used dietary composition data from other countries (32)(33)(34)(35) . Bioavailable Fe is the amount of Fe actually absorbed and utilized in the body, and is determined by several factors, including intake of phytate, Ca, vitamin C, meat, fish, tea and coffee and the individual's Fe status.…”

Section: Dietary Assessmentmentioning

confidence: 99%

Iron intake does not significantly correlate with iron deficiency among young Japanese women: a cross-sectional study

Asakura

Sasaki

Murakami

et al. 2009

Public Health Nutr.

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Objectives: We evaluated the association of nutrient intake with Fe deficiency with regard to lifestyle factors and health condition in young Japanese women. Uniquely among developed countries, dietary habits render Japanese populations vulnerable to Fe deficiency, owing to their relatively low intake of Fe and high intake of Fe absorption inhibitors, such as green tea and soyabeans. Design: A cross-sectional study. Setting and subjects: The subjects were 1019 female Japanese dietetic students aged 18-25 years. Dietary habits during the preceding month were assessed using a previously validated, self-administered, diet history questionnaire. Blood analysis was performed to assess body Fe status. Subjects were categorized with Fe deficiency when their serum ferritin levels were ,12 ng/ml. Twenty-nine dietary variables, i.e. intakes of energy, sixteen nutrients including Fe and twelve food groups, were analysed using multivariate logistic regression models adjusted for possible confounders. Results: Of the subjects, 24?5 % were categorized with Fe deficiency. However, no dietary factors assessed were significantly associated with Fe deficiency. The risk of Fe deficiency was significantly lower in women with infrequent or no menstrual cycles than in those with regular cycles (OR 5 0?58; 95 % CI 0?34, 1?00) and significantly higher in women with heavy menstrual flow than in women with average flow, albeit that these were self-reported (OR 5 1?83; 95 % CI 1?35, 2?48). Conclusions: These results suggest that dietary habits, including Fe intake, do not significantly correlate with Fe deficiency among young Japanese women.

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Section: Dietary Assessmentmentioning

confidence: 99%

Iron intake does not significantly correlate with iron deficiency among young Japanese women: a cross-sectional study

Asakura

Sasaki

Murakami

et al. 2009

Public Health Nutr.

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“…Bindra et al (1985) applied it to humans, proposing that the critical molar ratio be 0.2. Since then, Ellis et al (1987) reported dietary intakes of American, Asian and Nepalese vegetarians which for the most part exhibited higher ratios than those previously accepted (Table 3) For a comprehensive review of the phytate-mineral mechanisms as well as a list of phytate values in approximately 200 foods, see Harland & Oberleas (1987). For a further discussion of phytate: mineral ratios, see Fordyce et al (1987).…”

Section: Phytate:mineral Ratiosmentioning

confidence: 99%

Dietary Fibre and Mineral Bioavailability

Harland

1989

Nutr. Res. Rev.

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“…However, phytate or myo-inositol hexaphosphate, which is a constituent of all whole grain cereals, impairs the absorption of many essential minerals (Harland & Oberleas, 1987;Rossander et al, 1992). Zinc deficiency is considered highly prevalent in developing countries, where the diet is based on cereals and legumes, and also in vulnerable population groups in industrial countries (Lön-nerdal, 2000).…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal treatment and malting of barley improved zinc absorption but not calcium absorption in humans

et al. 2003

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Objective: To study whether hydrothermal treatment or malting of barley (cv. Blenheim) improves zinc and calcium absorption in humans. Design: Two groups of 10 and 12 healthy subjects, respectively, were in a period of 2 months in a fasting state, served two single meals each containing porridge or breakfast cereals prepared from processed or unprocessed (control) barley (60 g). The meals included 200 g of milk, extrinsically labelled with 65 Zn and 47 Ca. Whole-body retention of both minerals was measured. Setting: The study was carried out at the Department of Radiation Physics, Sahlgrenska University Hospital, Göteborg. Subjects: The subjects were recruited among students at the Göteborg University. None dropped out. Interventions: The activities of 65 Zn and 47 Ca were measured by whole-body counting four to five times over a 4-week period after each meal. Results: Zinc absorption from hydrothermally treated barley porridge, containing 28 mg P as inositol tri-to hexaphosphates (InsP 3 -InsP 6 ), was significantly higher (Po0.001) than from control porridge containing 111 mg P as InsP 3 -InsP 6 , 25.276.9 vs 11.072.5% (n ¼ 12). Calcium absorption did not differ (P40.05), 21.176.8 vs 19.574.7% (n ¼ 12). Zinc absorption from breakfast cereals of malted barley with phytase activity and containing 70 mg P as InsP 3 -InsP 6, was significantly higher (Po0.05) than from flakes of barley, containing 108 mg P as InsP 3 -InsP 6 and no phytase activity, 22.975.8 vs 14.874.6% (n ¼ 10). The calcium absorption was 21.376.5 vs 18.574.3% (n ¼ 10) and did not differ significantly (P40.05).

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Phytate in Foods

Cited by 216 publications

References 0 publications

Iron intake does not significantly correlate with iron deficiency among young Japanese women: a cross-sectional study

Iron intake does not significantly correlate with iron deficiency among young Japanese women: a cross-sectional study

Dietary Fibre and Mineral Bioavailability

Hydrothermal treatment and malting of barley improved zinc absorption but not calcium absorption in humans

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