A dry matter (DM) assay along with a qualitative and quantitative carbohydrate study were conducted on two Jerusalem artichoke (Helianthus tuberosus L.) cultivars-'Kharkov' and 'Violet de Rennes'. In addition to sucrose, glucose, and fructose, some inulin-type glucofructosans were detected at all stages of development of the tubers. The carbohydrate content was found to average from 65 to 80% DM. The tubers lose a fraction of their carbohydrates in winter-27.6% for 'Kharkov' and 35.6% for 'Violet de Rennes'.
RésuméUn dosage de matièré sèche (MS) ainsi qu'une étude qualitative et quantitative de glucides ont été effectués sui deux cultivars de Topinambour (Helianthus tuberosus L.), 'Kharkov' et 'Violet de Rennes'. En plus du saccharose, glucose et fructose, des glucofructosanes ont été détectées pendant les differents stades du développement des tubercules H93015 de Topinambour. Les glucides représentent 65 à 80% MS. Les tubercules perdent une fraction de leurs glucides en hiver, 27.6% pour le 'Kharkov' et 35.6% pour le 'Violet de Rennes'.
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