Relationship of Grain Fructan Content to Degree of Polymerisation in Different Barleys

DOI: 10.4236/fns.2014.56068   PDF   HTML     4,295 Downloads   5,757 Views   Citations

Abstract

Fructans are important in the survival of plants and also valuable for humans as potentially health promoting food ingredients. In this study fructan content and composition were determined in grains of 20 barley breeding lines and cultivars with a wide variation in chemical composition, morphology and country of origin, grown at one site in Chile. There was significant genotypic variation in grain fructan content ranging from 0.9% to 4.2% of grain dry weight. Fructan degree of polymerisation (DP) was analysed using high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). Changes in the distribution of different chain lengths and the pattern of structures of fructan were detected with increasing amount of fructan in the different barleys. A positive correlation was found between fructan content and the relative amount of long chain fructan (DP > 9) (r = 0.54, p = 0.021). Our results provide a basis for selecting promising barley lines and cultivars for further research on fructan in barley breeding with the aim to produce healthy food products.

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Nemeth, C. , Andersson, A. , Andersson, R. , Mangelsen, E. , Sun, C. and Åman, P. (2014) Relationship of Grain Fructan Content to Degree of Polymerisation in Different Barleys. Food and Nutrition Sciences, 5, 581-589. doi: 10.4236/fns.2014.56068.

Conflicts of Interest

The authors declare no conflicts of interest.

References

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