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Updated: Jul 15, 2026

Rapid High Throughput Amylose Determination in Freeze Dried Potato Tuber Samples
Published on: October 14, 2013
[Characterisation of Dioscorea bulbifera native starch].
Consuelo Araujo de Vizcarrondo1, Alicia Mariela Rincón, Fanny Padilla
1Unidad de Investigación de Análisis de Alimentos, Facultad de Farmacia, Universidad Central de Venezuela.
Dioscorea bulbifera bulbs provide a novel starch source with unique properties. This starch exhibits good stability and low retrogradation, making it suitable for various food applications.
Area of Science:
- Food Science and Technology
- Agricultural Science
- Biochemistry
Context:
- Exploring non-conventional botanical sources for food ingredients.
- Assessing the potential of Dioscorea bulbifera (wild yam) bulbs as a starch source.
Purpose:
- To evaluate the chemical composition, physical, physico-chemical, and morphological characteristics of Dioscorea bulbifera starch.
- To determine the rheological properties and suitability of this starch for food applications.
Summary:
- Dioscorea bulbifera starch yielded 28.48 g/100 g (dry weight) with 29.37% amylose content.
- Starch granules were irregular, pyramid-like, or elongated. Gelatinization occurred at 70.8°C, with maximum viscosity (435 BU) at 88.6°C.
- The starch demonstrated stable consistency during cooking and low retrogradation, indicating potential for food products requiring rapid viscosity and stable gels.
Impact:
- Highlights Dioscorea bulbifera as a viable alternative starch source.
- Provides valuable data on starch properties for food technologists.
- Suggests applications in food products needing fast viscosity development and stable gel structures.
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