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Ariá (Goeppertia allouia) Brazilian Amazon tuber as a non-conventional starch source for foods
Domingos Rodrigues Barros1, Ana Paula Miléo Guerra Carvalho1, Erica Oliveira da Silva2
1Amazon Food Innovation and Biotechnology Research Group (gIBA), Federal University of Amazonas, Manaus, Amazonas 69077-00, Brazil; Federal Institute of Education, Science and Technology of Amazonas, Manaus, Amazonas, Brazil.
Abstract:
Ariá (Goeppertia allouia) is a tuber from the arrowroot's family widely found in the Brazilian Amazon. The tuber has a flavor similar to corn, besides high retrogradation when cooked, differing from other commercial starches. To enhance its added value, the Ariá starch was extracted to evaluate its potential as a food ingredient. The Ariá starch was compared to the commercially available corn and potato starches regarding their physicochemical, thermal, structural, and rheological properties based on the Duncan's test (p-value <0.05). The Ariá starch presented high amylose content (~38% w/w). Furthermore, the X-ray diffraction pattern confirmed its Type-C crystalline structure. The rheological properties showed that the starch gels presented high hardness and retrogradation as other studied starches. Ariá has great potential as a source of starch with low digestibility, increasing the satiety of food products.
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