Contribution to the Method of Sugar Analysis in Legume Grains for Ensiling - A Pilot Study

Authors(5) :-Annette Zeyner, Annett Gefrom, Dirk Hillegeist, Manfred Sommer, Jorg M. Greef

The quotient of sugar content and buffering capacity (S/BC quotient) serves as an important predictor for the ensilability of green feed and cereal or legume grains. For this, reference values were given which base on the anthrone method for sugar analysis. This method has largely been replaced today, but the consistency of results from different methods is questionable. In this study, the sugar content of legume grains was determined by the anthrone method and compared with results from nowadays more common methods. For this, grains from lupine (Lupinus spp.; var. 'Bora', 'Borlu'), pea (Pisum sativum; var. 'Lisa', 'Phönix') and field bean (Vicia faba; var. 'Limbo') were analysed (n = 4 each) for sugar via anthrone method, a gravimetric method (GRAVI) and HPLC. Following HPLC, either glucose, fructose and sucrose (HPLC-1) or these monomers plus galactose (HPLC-2) or HPLC-2 plus oligomeric carbohydrates (raffinose, stachyose, verbascose; HPLC-3) as sum were referred to as sugar. Results were compared by one-way analysis of variance. None of the alternative methods provided results that are at least similar to the sugar content detected by the anthrone method (P > 0.05). HPLC-3 caused a clear overestimation whereas the other methods (VDLUFA, HPLC-1, HPLC-2) resulted in a remarkable underestimation compared to the anthrone method. The results from legume grains suggest that different methods of sugar analysis provide remarkably different results even though all methods are accepted and applied in routine analysis. Thus, i) sugar contents should not be interpreted without knowledge of the applied method, and ii) as long as reference values base on anthrone method, the forecast of ensilability via the S/BC quotient should only be performed when anthrone method was used to determine the sugar content. The comparison of results from different methods of sugar analysis should be extended to grasses and further more conventional material for ensiling.

Authors and Affiliations

Annette Zeyner
Institute of Agricultural and Nutritional Sciences, Group Animal Nutrition, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
Annett Gefrom
State Research Centre of Agriculture and Fishery Mecklenburg-Western Pomerania, Gulzow-Pruzen, Germany
Dirk Hillegeist
Institute for Crop and Soil Science, Julius Kuhn Institute, Federal Research Centre for Cultivated Plants, Braunschweig, Germany
Manfred Sommer
Chamber of Agriculture Lower Saxony, Hanover, Germany
Jorg M. Greef
Institute for Crop and Soil Science, Julius Kuhn Institute, Federal Research Centre for Cultivated Plants, Braunschweig, Germany

Legume Grain, Ensiling, Sugar, Buffering Capacity, Anthrone Method, HPLC

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Publication Details

Published in : Volume 1 | Issue 2 | May-June 2015
Date of Publication : 2015-06-30
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 74-80
Manuscript Number : IJSRST151221
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Annette Zeyner, Annett Gefrom, Dirk Hillegeist, Manfred Sommer, Jorg M. Greef, " Contribution to the Method of Sugar Analysis in Legume Grains for Ensiling - A Pilot Study", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 1, Issue 2, pp.74-80, May-June-2015.
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