DETERMINATION OF DIETARY FIBRE – THE INFLUENCE OF MILLING FRACTION AND MIXING PROCESS

Blaž FERJANČIČ, Jasna BERTONCELJ

Abstract


Dietary fibre is an important constituent of a healthy diet, composed of non-digestible carbohydrates and lignin. Over the last decades dietary fibre has gained importance for human nutrition, due to its beneficial effects on health. In addition to classical enzyme-gravimetric methods, new methods for the determination of total, insoluble and soluble dietary fibres in foods have recently been developed, but have not yet been fully implemented for use. For the purpose of creating food composition databases and for food labelling, the classical AOAC 985.29 and 991.43 methods are still widely used. The methods are enzyme-gravimetric and therefore sensitive to enzyme kinetics. The aim of the study was to investigate the effect of milling fraction and mixing of the sample on dietary fibre content determined with the AOAC method 991.43. The results showed that milling fraction significantly influences the content of dietary fibre, especially in unprocessed or slightly processed cereals, the mixing acts synergistically with milling. According to the results it is proposed to mill the sample between 200 and 500 μm. For accurate determination of dietary fibre content, it is necessary to prepare the sample correctly, since the AOAC 991.43 method is, despite its robustness, sensitive during the sample preparation step.

Keywords


dietary fibre, AOAC official methods, breakfast cereals, milling, fractionation, mixing

References


Al-Rabadi, G. J. S., Gilbert, R. G., Gidley, M. J. (2009). Effect of particle size on kinetics of starch digestion in milled barley and sorghum grains by porcine alpha-amylase. Journal of Cereal Science, 50(2), 198-204. doi:10.1016/j.jcs.2009.05.001

AOAC (1995). Official methods of analysis (16th ed.). Washington: DC. Association of Official Analytical Chemists.

CAC (2017). Codex Alimentarius Commission. Guidelines on nutrition labeling CAC/GL 2–1985 as last amended 2017. Joint FAO/WHO Food Standards Programme, Secretariat of the Codex Alimentarius Commission. Rome, FAO: 10 str. http://www.fao.org/fao-who-codexalimentarius/sh-proxy/es/?lnk=1&url=https%253A%252F%252Fworkspace.fao.org%252Fsites%252Fcodex%252FStandards%252FCAC%2BGL%2B2-1985%252FCXG_002e.pdf

Dahl, W. J., Stewart. M. L. (2015). Position of the Academy of Nutrition and Dietetics: Health implications of dietary fiber. Journal of Academy of Nutrition and Dietetics, 115(11), 1861-1870. doi:10.1016/j.jand.2015.09.003

Dai, F. J., Chau, C. F. (2017). Classification and regulatory perspectives of dietary fiber. Journal of Food and Drug Analysis, 25(1), 37-42. doi:10.1016/j.jfda.2016.09.006

de la Hera, E., Gomez, M. Rosell, C. M. (2013). Particle size distribution of rice flour affecting the starch enzymatic hydrolysis and hydration properties. Carbohydrate Polymers, 98(1), 421-427. doi:10.1016/j.carbpol.2013.06.002

DeVries, J.W. (2010). Validating official methodology commensurate with dietary fibre research and definitions. In: J. W. van der Kamp, J. Jones, B. McCleary & D. Topping (Eds.), Dietary fibre: new frontiers for food and health (pp. 29-49).Wageningen: Wageningen Academic Publishers. doi:10.3920/978-90-8686-692-2

Dhital, S., Shrestha, A. K., Gidley, M. J. (2010). Relationship between granule size and in vitro digestibility of maize and potato starches. Carbohydrate Polymers, 82(2), 480-488. doi:10.1016/j.carbpol.2010.05.018

Djurle, S., Andersson, A. A. M., Andersson, R. (2016). Milling and extrusion of six barley varieties, effects on dietary fibre and starch content and composition. Journal of Cereal Science, 72, 146-152. doi:10.1016/j.jcs.2016.09.017

EFSA (2010). Scientific opinion on dietary reference values for carbohydrates and dietary fibre. European Food Safety Authority, EFSA Journal, 8(3), 1-77. doi:10.2903/j.efsa.2010.1462

EFSA (2017). Dietary reference values for nutrients: Summary report. European Food Safety Authority: 92 str. doi:10.2903/sp.efsa.2017.e15121

Ehle, F. R. (1984). Influence of particle size on determination of fibrous feed components. Journal of Dairy Science, 67(7),1482-1488. doi:10.3168/jds.S0022-0302(84)81465-4

Fernstrand, A. M., Burya, D., Garssen, J., Verster, J. C. (2017). Dietary intake of fibers: differential effects in men and women on perceived general health and immune functioning. Food & Nutrition Research, 61(1), 1-7. doi:10.1080/16546628.2017.1297053

Frølich, W., Nyman, M. (1988). Minerals, phytate and dietary fibre in different fractions of oat-grain. Journal of Cereal Science, 7(1), 73-82. doi:10.1016/S0733-5210(88)80061-4

Fuller, S., Beck, E., Salman, H., Tapsell, L. (2016). New horizons for the study of dietary fibre and health: a review. Plant Foods for Human Nutrition, 71(1), 1-12. doi:10.1007/s11130-016-0529-6

Golob, T., Bertoncelj, J., Korošec, M. (2012). Pomen prehranske vlaknine v prehrani človeka. Acta Agriculturae Slovenica, 99(2), 201-211.

Gualberto, D. G., Bergman, C. J., Kazemzadeh, M., Weber, C.W. (1997). Effect of extrusion processing on the soluble and insoluble fiber and phytic acid contents of cereal brans. Plant Foods for Human Nutrition, 51(3),187-198. doi:10.1023/A:1007941032726

Kendall, C. W. C., Esfahani, A., Jenkins D. J. A. (2010). The link between dietary fibre and human health. Food Hydrocolloids, 24(1): 42-48. doi:10.1016/j.foodhyd.2009.08.002

Li, Y. O., Komarek, A. R. (2017). Dietary fibre basics: Health, nutrition, analysis, and applications. Food Quality and Safety, 1, 47-59. doi:10.1093/fqs/fyx007

Mahasukhonthachat, K., Sopade, P. A., Gidley, M. J. (2010). Kinetics of starch digestion in sorghum as affected by particle size. Journal of Food Engineering, 96(1): 18-28. doi:10.1016/j.jfoodeng.2009.06.051

McCleary, B. V. (2001). Measurement of dietary fibre components: the importance of enzyme purity, activity and specificity. In: B. V. McCleary & L. Prosky (Eds.), Advanced dietary fibre technology (pp. 89-106). Oxford: Blackwell Science.

McCleary, B. V., Sloane, N., Draga, A., Lazewska, I. (2013). Measurement of total dietary fiber using AOAC method 2009.01 (AACC International approved method 32-45.01): Evaluation and updates. Cereal Chemistry, 90(4), 396-414. doi:10.1094/CCHEM-10-12-0135-FI

Monro, J. A. (2015). Dietary fibre. In: L. M. L. Nollet & F. Toldrá (Eds.), Handbook of food analysis, Third edition (pp. 755-767). Boca Raton: Taylor & Francis Group.

Perry, J. R., Ying, W. (2016). A review of physiological effects of soluble and insoluble dietary fibers. Journal of Nutrition & Food Sciences, 6(2), 1-6. doi:10.4172/2155-9600.1000476

Referenčne vrednosti za energijski vnos ter vnos hranil: tabelarična priporočila za otroke (od 1. leta starosti naprej), mladostnike, odrasle, starejše, nosečnice ter doječe matere. 2016. Ljubljana, Nacionalni inštitut za javno zdravje: 8 str. http://www.mz.gov.si/fileadmin/mz.gov.si/pageuploads/javno_zdravje_2015/foto_DJZ/prehrana/2016_referencne_vrednosti_za_energijski_vnos_ter_vnos_hranil_17022016.pdf

Salobir, J., Levart, A., Korošec, M. (2015). Prehranske in zdravstvene trditve v primeru maščob in prehranske vlaknine. V: M. Korošec, T. Polak & L. Demšar (ur.). Hrana, prehrana in mediji. 28. Bitenčevi živilski dnevi. (pp. 81-97). Ljubljana, Biotehniška fakulteta, Oddelek za živilstvo.

Singh, J., Dartois, A., Kaur, L. (2010). Starch digestibility in food matrix: a review. Trends in Food Science & Technology, 21(4), 168-180. doi:10.1016/j.tifs.2009.12.001

Steadman, K. J., Burgoon, M. S., Lewis, B. A. Edwardson, S. E., Obendorf, R. L. (2001). Buckwheat seed milling fractions: description, macronutrient composition and dietary fibre. Journal of Cereal Science, 33(3), 271-278. doi:10.1006/jcrs.2001.0366

Stephen, A. M., Champ, M. M. J., Cloran, S. J., Fleith, M., van Lieshout, L., Mejborn, H., Burley, V. J. (2017). Dietary fibre in Europe: current state of knowledge on definitions, sources, recommendations, intakes and relationships to health. Nutrition Research Reviews, 30(2), 149-190. doi:10.1017/S095442241700004X

Škrabanja, V., Kreft, I., Golob, T., Modic, M., Ikeda, S., Ikeda, K., Kreft, S., Bonafaccia, G., Knapp, M., Košmelj, K. (2004). Nutrient content in buckwheat milling fractions. Cereal Chemistry, 81(2), 172-176. doi:10.1094/CCHEM.2004.81.2.172

Tarcea, M., Rus, V., Zita, F. (2017). Insight of dietary fibers consumption and obesity prevention. Journal of Obesity & Eating Disorders, 3(1), 1-3. doi:10.21767/2471-8203.100033

Tester, R. F., Qi, X., Karkalas, J. (2006). Hydrolysis of native starches with amylases. Animal Feed Science and Technology, 130(1-2), 39-54. doi:10.1016/j.anifeedsci.2006.01.016

Tosi, E. A., Re, E., Lucero, H., Masciarelli, R. (2001). Dietary fiber obtained from amaranth (Amaranthus Cruentus) grain by differential milling. Food Chemistry, 73(4), 441-443. doi:10.1016/S0308-8146(00)00326-5

Uredba (EU) št. 1169/2011 evropskega parlamenta in sveta z dne 25. oktobra 2011 o zagotavljanju informacij o živilih potrošnikom (2011). Uradni list Evropske unije, 304, 18-63 http://eur-lex.europa.eu/legal-content/SL/TXT/PDF/?uri=CELEX:32011R1169&from=sl

Uredba (EU) št. 1924/2006 evropskega parlamenta in sveta z dne 20. decembra 2006 o prehranskih in zdravstvenih trditvah na živilih (2006). Uradni list Evropske unije, 404: 9-25 http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:404:0009:0025:SL:PDF

Westenbrink, S., Brunt, K., van der Kamp, J. W. (2013). Dietary fibre: challenges in production and use of food composition data. Food Chemistry, 140(3), 562-567. doi:10.1016/j.foodchem.2012.09.029

Zhang, B., Dhital, S., Gidley, M. J. (2015). Densely packed matrices as rate determining features in starch hydrolysis. Trends in Food Science & Technology, 43(1), 18-31. doi:10.1016/j.tifs.2015.01.004

Zielinski, G., Rozema, B. (2013). Review of fiber methods and applicability to fortified foods and supplements: choosing the correct method and interpreting results. Analytical and Bioanalytical Chemistry, 405(13), 4359-4372. doi:10.1007/s00216-013-6711-x




DOI: http://dx.doi.org/10.14720/aas.2018.111.1.11

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