The Influence of Soaking and Sprouting on the Physicochemical Characteristics of Tigernut Tubers (Cyperus esculentus L.) - Université Clermont Auvergne Access content directly
Journal Articles AppliedChem Year : 2022

The Influence of Soaking and Sprouting on the Physicochemical Characteristics of Tigernut Tubers (Cyperus esculentus L.)

Djomdi Djomdi
Hamadou Bakari
Olivier Gibert
  • Function : Author
Thierry Tran
Richard Ejoh
  • Function : Author
Gwendoline Christophe
  • Function : Author
Philippe Michaud
Robert Ndjouenkeu
  • Function : Author

Abstract

The influence of soaking and germination on the physicochemical characteristics of tigernut tubers (Cyperus esculentus L.) are investigated. Tubers (Ø > 1 cm) were soaked in an ascorbic acid solution (0.1%) for 48 h at 40 °C before undergoing germination for 6 days. The textural profile, the capacity and germination energy and the biochemical composition of these tubers were determined. The germination energy varied from 76.18 to 79.48% for the quantities of solution of 24 and 48 mL, respectively. The textural profile of the tubers varied depending on the type of treatment. Germination resulted in a considerable reduction in amylose content from 14.15% for the native tigernut tuber to 9.98% for the sprouted one. This treatment also increased the protein, ascorbic acid and ash contents, which ranged from 7.54 to 8.82 g/100 g DM, 250 to 275.39 mg/100 g DM and 2.60 to 3.84 g/100 g DM, respectively. The starch content of the tubers following germination remained high, which could come up against the pasteurization of the milk from these tubers.

Dates and versions

hal-03625790 , version 1 (31-03-2022)

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Djomdi Djomdi, Hamadou Bakari, Olivier Gibert, Thierry Tran, Richard Ejoh, et al.. The Influence of Soaking and Sprouting on the Physicochemical Characteristics of Tigernut Tubers (Cyperus esculentus L.). AppliedChem, 2022, 2 (2), pp.48-58. ⟨10.3390/appliedchem2020003⟩. ⟨hal-03625790⟩
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