Planta Med 1979; 36(5): 68-73
DOI: 10.1055/s-0028-1097242
Research Articles

© Georg Thieme Verlag Stuttgart · New York

Metabolism of Reserve Polysaccharides in Tubers of Orchis morio L

G. Franz
  • Lehrstuhl für Pharmazeutische Biologie, Universität Regensburg1, Bundesrepublik Deutschland.
1 The work was carried out at the Botanical Institute, University Fribourg, Fribourg/Switzerland
Further Information

Publication History

Publication Date:
13 January 2009 (online)


Breakdown and metabolism of both glucomannan (Salep–Mannan) and starch were studied in tubers of Orchis morio L. during one vegetation period. Variations in the amount of reducing sugars and sucrose, which resulted from the metabolisation process, were analysed during the same period.

Enzymes responsible for mobilisation of the reserve polysaccharides were shown to be β–mannase, amylase, βmannosidase, β–glucosidase and α–glucosidase. Variations in the different enzyme activities were measured at the same time intervals.