Distribution and characterisation of fructan in wheat milling fractions

Sammanfattning

Structure and health effects of inulin-type fructans have been extensively studied, while less is known about the properties of the graminan-type fructans in wheat. Arabinoxylan (AX) is another important indigestible component in cereal grains, which may have beneficial health effects. In this study, the fructan content in milling fractions of two wheat cultivars was determined and related to ash, dietary fibre and AX contents. The molecular weight distribution of the fructans was analysed with HPAEC-PAD and MALDI-TOF MS using (1)H NMR and enzymatic hydrolysis for identification of fructans. The fructan content (g/100 g) ranged from 1.5 +/- 0.2 in flour to 3.6 +/- 0.5 in shorts and 3.7 +/- 0.3 in bran. A correlation was found between fructan content and dietary fibre content (r=0.93, P<0.001), but with a smaller variation in fructan content between inner and outer parts of the grain. About 50% of the dietary fibre consisted of AX in all fractions. The fructans were found to have a DP of up to 19 with a similar molecular weight distribution in the different fractions. (C) 2008 Elsevier Ltd. All rights reserved.

Nyckelord

Fructan; Arabinoxylan; Wheat; Molecular weight

Publicerad i

Journal of Cereal Science
2008, Volym: 48, nummer: 3, sidor: 768-774
Utgivare: ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD

SLU författare

• Andersson, Roger

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

Globala målen

SDG2 Ingen hunger


UKÄ forskningsämne

Livsmedelsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.jcs.2008.05.002

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/20244