Unmodified cassava starches with high phosphorus content

Author(s)

Leonel, Magali ^[1] ; Fernandes, Daiana de Souza ^[1] ; dos Santos, Thais Paes Rodrigues ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Ctr Trop Roots & Starch CERAT, Univ Ave 3780, BR-18610034 Botucatu, SP - Brazil

• Document type: Journal article
• Source: International Journal of Biological Macromolecules; v. 187, p. 113-118, SEP 30 2021.
• Web of Science Citations: 0

Abstract

Our study was based on the fact that physiological changes in the plant resulting from the growth conditions alter the properties of the starch. An experimental trial was installed with cassava plants in poor phosphorus soil. A part of plants received phosphate fertilization at a level three times higher than the recommended dose, in order to provide high availability of phosphorus in the soil. The plants grew for two years and the starches were isolated at three times in the second vegetative cycle. The starches had A-type X-ray pattern. Starches isolated from cassava plants grown in soils with high phosphorus had increases of more than 100% in the content of bound phosphorus, which caused changes in the size of the granules, amylose, swelling power, solubility, pasting and thermal properties. These results indicate possibilities of increasing the commercial value of native cassava starch due to the expansion of use, considering the range of uses of phosphate starches for food and non-food purposes. (AU)

• FAPESP's process: 16/25791-9 - INFLUENCE OF PHOSPHATE FERTILIZER ON GROWTH, YIELD, COMPOSITION OF ROOTS AND CHARACTERISTICS OF STARCH IN CASSAVA CULTIVATED BY TWO VEGETATIVE CYCLES
• Grantee: Magali Leonel
• Support Opportunities: Regular Research Grants