2012
DOI: 10.1590/s1981-67232012000100007
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Estabilidade de farinha de batata-doce biofortificada

Abstract: ResumoA farinha de batata-doce, quando elaborada a partir de raízes com alto teor de β-caroteno, é fonte de pró-vitamina A, que apresenta efeitos benéficos na saúde humana. Visando contribuir com o suprimento de vitamina A na alimentação de populações carentes, a EMBRAPA tem selecionado e melhorado culturas via biofortificação, como da batata-doce, e pesquisado o desenvolvimento de produtos com esta matéria-prima biofortificada. Complementando esses desenvolvimentos, o objetivo deste estudo foi comparar o efei… Show more

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Cited by 24 publications
(22 citation statements)
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“…Hence, considering that 500 g tapioca flour are stored in a 22 cm x 17 cm LDPE package, Equation (2) is used to estimate the storage time required for the product to reach critical moisture. The water vapor permeability value of 4.94 g H 2 O/m 2 .day estimated by Alves, Ito, Carvalho, Melo, and Godoy (2012) for 80 µm thick LDPE film exposed to 38°C and 90% RH was used.…”
Section: Resultsmentioning
confidence: 99%
“…Hence, considering that 500 g tapioca flour are stored in a 22 cm x 17 cm LDPE package, Equation (2) is used to estimate the storage time required for the product to reach critical moisture. The water vapor permeability value of 4.94 g H 2 O/m 2 .day estimated by Alves, Ito, Carvalho, Melo, and Godoy (2012) for 80 µm thick LDPE film exposed to 38°C and 90% RH was used.…”
Section: Resultsmentioning
confidence: 99%
“…Retention values after 30 days at such degradation rates represented 65.0% for fermented chikwangue paste and 43.0% for fermented cassava microcossettes , at 24–27 °C. It is known that the rate of degradation of pVACs is relatively high in dry products, especially when the particle size of the product is small, due to its high surface area exposing the carotenoids to oxygen . Lower k values for fermented cassava paste suggest that carotenoids in an aqueous matrix are more stable than carotenoids exposed to oxygen in a dry matrix such as cassava microcossettes .…”
Section: Resultsmentioning
confidence: 99%
“…The k values for TC in cassava microcossettes were similar to values reported for C in dry cassava granules stored at 26-33 ∘ C (k = 0.0144-0.0271) by Bechoff et al 24 Retention values after 30 days at such degradation rates represented 65.0% for fermented chikwangue paste and 43.0% for fermented cassava microcossettes, at 24-27 ∘ C. It is known that the rate of degradation of pVACs is relatively high in dry products, especially when the particle size of the product is small, due to its high surface area exposing the carotenoids to oxygen. [25][26][27] Lower k values for fermented cassava paste suggest that carotenoids in an aqueous matrix are more stable than carotenoids exposed to oxygen in a dry matrix such as cassava microcossettes. These results are in concordance with previous studies showing that the main factor influencing degradation of carotenoids during storage of biofortified foods is oxygen availability.…”
Section: Estimation Of Degradation Kinetics Of Carotenoids In Cassavamentioning
confidence: 99%
“…For a practical contribution to the marketing of cassava flour from dry group, the storage time was estimated, using three different packaging materials, with mean film thickness and water vapour permeability, which were previously reported by Alves, Ito, Carvalho, Melo and Godoy (2012). The simulation was made using the following conditions: initial flour moisture of 4.79 g H 2 O/100 g; maximum moisture content of 10.56 g H 2 O/100 g d.b., in which the microbiological stability of the flour is ensured (a w < 0.6); a package that holds 1000 g of the product, with dimensions of 260 mm × 150 mm, at extreme conditions of environment with a relative humidity of 90% and temperature of 38°C.…”
Section: Storage Time Estimationmentioning
confidence: 99%