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

Abstract

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 65Zn and 47Ca. 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 65Zn and 47Ca 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 (InsP3–InsP6), was significantly higher (P<0.001) than from control porridge containing 111 mg P as InsP3–InsP6, 25.2±6.9 vs 11.0±2.5% (n=12). Calcium absorption did not differ (P>0.05), 21.1±6.8 vs 19.5±4.7% (n=12). Zinc absorption from breakfast cereals of malted barley with phytase activity and containing 70 mg P as InsP3–InsP6, was significantly higher (P<0.05) than from flakes of barley, containing 108 mg P as InsP3– InsP6 and no phytase activity, 22.9±5.8 vs 14.8±4.6% (n=10). The calcium absorption was 21.3±6.5 vs 18.5±4.3% (n=10) and did not differ significantly (P>0.05).

Conclusions: Improvements of zinc absorption in breakfast meals can be achieved by optimised hydrothermal treatment or malting of barley. Calcium absorption was not influenced in the meals in this study.

Sponsorship: Supported by Semper AB, Sweden, Oy Lahden Polttimo, Finland, the SL-Foundation, Sweden, Swedish National Board for Industrial and Technical Development (NUTEK), the Nordic Industrial Foundation, Swedish Council for Forestry and Agricultural Research (SJFR, project no 50.0306/97).

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References

  • Arvidsson B, Cederblad Å, Björn-Rasmussen E & Sandström B (1978): A radionuclide technique for studies of zinc absorption in man. Int. J. Nucl. Med. Biol. 5, 104–109.

    CAS  Article  Google Scholar 

  • Bergman EL, Fredlund K, Reinikainen P & Sandberg AS (1999): Hydrothermal processing of barley (cv. Blenheim): optimisation of phytate degradation and increase of free myo-inositol. J. Cereal Sci. 29, 261–272.

    CAS  Article  Google Scholar 

  • Bergman EL, Fredlund K, Reinikainen P & Sandberg AS (2001): Development of predictive models for optimization of phytate degradation in wheat and rye during hydrothermal processing. Cereal Chem. 78, 144–150.

    CAS  Article  Google Scholar 

  • Bronner F, Harris RS, Maletskos CJ & Benda CE (1954): Studies in calcium metabolism. Effect of food phytates on calcium uptake in children on low calcium breakfasts. J. Nutr. 54, 523–542.

    CAS  Article  Google Scholar 

  • Brune M, Rossander-Hulthén L, Hallberg L, Gleerup A & Sandberg AS (1992): Human iron absorption from bread: inhibiting effects of cereal fiber, phytate and inositol phosphates with different numbers of phosphate groups. J. Nutr. 122, 442–449.

    CAS  Article  Google Scholar 

  • Harland BF & Oberleas D (1987): Phytate in foods. World Rev. Nutr. Diet. 52, 235–259.

    CAS  Article  Google Scholar 

  • Heaney RP, Weaver CM & Fitzsimmons ML (1991): Soybean phytate content: effect on calcium absorption. J. Clin. Nutr. 53, 745–747.

    CAS  Article  Google Scholar 

  • ICRP, International Commission on Radiological Protection (1996): Age-dependent Doses to Members of the Public from Intake of Radionuclides: Part 5 Compilation of Ingestion and Inhalation Dose Coefficients. ICRP Publication 72, Oxford, UK: Pergamon Press.

  • Isaksson M (1998): Absorptionsstudier med helkroppsräknare: kalcium och zink i människokroppen - En metodbeskrivning. Rapport RADFYS/MFT 98:04, Avdelningen för radiofysik, Göteborgs universitet & Medicinsk Fysik och Teknik, SU/Sahlgrenska, Göteborg (in Swedish).

  • Isaksson M, Fredlund K, Sandberg AS, Almgren A & Rossander-Hulthén L (2000): Determination of the retention of 47Ca by whole-body counting. Appl. Radiat. Isot. 52, 1441–1450.

    CAS  Article  Google Scholar 

  • Kivistö B, Andersson H, Cederblad G, Sandberg AS & Sandström B (1986): Extrusion cooking of a high-fibre cereal product. 2. Effects on apparent absorption of zinc, iron, calcium, magnesium and phosphorus in humans. Br. J. Nutr. 55, 255–260.

    Article  Google Scholar 

  • Kivistö B, Cederblad Å, Davidsson L, Sandberg AS & Sandström B (1989): Effect of meal composition and phytate content on zinc absorption in humans from an extruded bran product. J. Cereal Sci. 10, 189–197.

    Article  Google Scholar 

  • Larsson M, Rossander-Hulthén L, Sandström B & Sandberg AS (1996): Improved zinc and iron absorption from breakfast meals containing malted oats with reduced phytate content. Br. J. Nutr. 76, 677–688.

    CAS  Article  Google Scholar 

  • Larsson M & Sandberg AS (1991): Phytate reduction in bread containing oat flour, oat bran or rye bran. J. Cereal Sci. 14, 141–149.

    CAS  Article  Google Scholar 

  • Larsson M & Sandberg AS (1992): Phytate reduction in oats during malting. J. Food Sci. 57 (4), 994–997.

    CAS  Article  Google Scholar 

  • Lee WJ (1990): Phytic acid content and phytase activity of barley malt. Am. Soc. Brew. Chem. 48 (2), 62–65.

    CAS  Google Scholar 

  • Lönnerdal B (2000): Dietary factors influencing zinc absorption. J. Nutr. 130, 1378S–1383S.

    Article  Google Scholar 

  • McCance RA & Widdowson EM (1942a): Mineral metabolism on dephytinized bread. J. Physiol. 101, 304–313.

    CAS  Article  Google Scholar 

  • McCance RA & Widdowson EM (1942b): Mineral metabolism of healthy adults on white and brown bread dietaries. J. Physiol. 101, 44–85.

    CAS  Article  Google Scholar 

  • Norris WP, Tyler SA & Brues AM (1958): Retention of radioactive bone-seekers. Science 128, 456–462.

    CAS  Article  Google Scholar 

  • Nävert B, Sandström B & Cederblad Å (1985): Reduction of the phytate content of bran by leavening in bread and its effect on absorption of zinc in man. Br. J. Nutr. 53, 47–53.

    Article  Google Scholar 

  • Prentice A & Bates CJ (1994): Adequacy of dietary mineral supply for human bone growth and mineralisation. Eur. J. Clin. Nutr. 48, S161–S177.

    PubMed  Google Scholar 

  • Rossander L, Sandberg AS & Sandström B (1992): The influence of dietary fibre on mineral absorption and utilisation. In Dietary Fibre — A Component Food. Nutritional Function in Health and Disease, eds Schweizer TF & Edwards CA, pp 197–216. London: Springer Verlag.

    Chapter  Google Scholar 

  • Rutgersson A, Bergman EL, Lingnert H & Sandberg AS (1997): Optimization of temperature, time, and lactic acid concentration to inactivate lipoxygenase and lipase and preserve phytase activity in barley (cv. Blenheim) during soaking. Cereal Chem. 74, 727–732.

    CAS  Article  Google Scholar 

  • Sandberg AS (1991): The effect of food processing on phytate hydrolysis and availability of iron and zinc. Nutr. Toxicol. Consequences food process. 33, 499–508.

    Article  Google Scholar 

  • Sandberg AS & Ahderinne R (1986): HPLC method for determination of inositol tri-, tetra-, penta-, and hexaphosphates in foods and intestinal contents. J. Food Sci. 51 (3), 547–550.

    CAS  Article  Google Scholar 

  • Sandberg AS & Andersson H (1988): Effect of dietary phytase on the digestion of phytate in the stomach and small intestine of humans. J. Nutr. 118, 469–473.

    CAS  Article  Google Scholar 

  • Sandberg AS, Andersson H, Carlsson NG & Sandström B (1987): Degradation products of bran phytate formed during digestion in the human small intestine: effect of extrusion cooking on digestibility. J. Nutr. 117, 2061–2065.

    CAS  Article  Google Scholar 

  • Sandberg AS, Carlsson NG & Svanberg U (1989): Effects of inositol tri-, terra., penta-, and hexaphosphates on in vitro estimation of iron availability. J. Food Sci. 54 (1), 159–161, 186.

    CAS  Article  Google Scholar 

  • Sandberg AS, Larsen T & Sandström B (1993): High dietary calcium level decreases colonic phytate degradation in pigs fed a rapeseed diet. J. Nutr. 123, 559–566.

    CAS  Article  Google Scholar 

  • Sandström B, Almgren A, Kivistö B & Cederblad Å (1987a): Zinc absorption from meals based on rye, barley, oatmeal, triticale, and whole-wheat. J. Nutr. 117, 1898–1902.

    Article  Google Scholar 

  • Sandström B, Kivistö B & Cederblad Å (1987b): Absorption of zinc from soy protein meals in humans. J. Nutr. 117, 321–327.

    Article  Google Scholar 

  • Sandström B & Sandberg AS (1992): Inhibitory effects of isolated phosphates on zinc absorption in humans. J. Trace Element Electrolytes Health Dis. 6, 99–103.

    Google Scholar 

  • Türk M, Carlsson NG & Sandberg AS (1996): Reduction in the levels of phytate during wholemeal bread making; effect of yeast and wheat phytases. J. Cereal Sci. 23 (3), 257–264.

    Article  Google Scholar 

  • Weaver CM, Heaney RP, Martin BR & Fitzsimmons ML (1991): Human calcium absorption from whole-wheat products. J. Nutr. 121: 1769–1775.

    CAS  Article  Google Scholar 

  • Weaver CM, Heaney RP, Proulx WR, Hinders SM & Packard PT (1993): Absorbability of calcium from common beans. J. Food Sci. 58, 1401–1403.

    CAS  Article  Google Scholar 

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Correspondence to K Fredlund.

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Fredlund, K., Bergman, EL., Rossander-Hulthén, L. et al. Hydrothermal treatment and malting of barley improved zinc absorption but not calcium absorption in humans. Eur J Clin Nutr 57, 1507–1513 (2003). https://doi.org/10.1038/sj.ejcn.1601718

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Keywords

  • phytate
  • InsP6
  • barley
  • hydrothermal treatment
  • zinc absorption
  • calcium absorption
  • whole-body counting

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