Efeito do método de determinação de matéria seca no teor de carboidratos, em raízes de mandioca (Maihot esculenta Crantz)
Palavras-chave:
matéria seca, carboidratos solúveis, raízes tuberosas, temperatura de secagem, análise químicaResumo
Various techniques for dry matter content determination in fresh cassava roots were compared and discussed. The best results were obtained with samples cut in small cubes (c. a. 1 cm edge); placed in Petri dishes 4.5 cm?2/g), and dried at 75°C for 8 hours, in a forced air oven. Higher temperatures favored non-enzymatic browning with consequent decrease in reducing sugars and free amino acids (Maillard reaction) content.
Referências
A.O.A.C. Oficial methods of analysis of the Association of Official Analytical Chemists. 12th ed. Washington, Association of Official Analytical Chemists, 1975. 1049 p.
BRAVERMAN, J.B.S. Introduction to the biochemistry of foods. New York, Elsevier Publishing Company, 1963. 336 p.
CORREIA, F.A. & FRAGA Jr., C.G. Tecnologia da mandioca. Estudo preliminar da variação da percentagem de fécula. Bragantia, 5 (4): 213-237. 1945.
DAS GUPTA, D.K. Effects of Cicocel on crop plants in Sierra Leone. II. Cassava (Manihot esculenta). Expl. Agric., 12:321-328. 1976.
DUNPHY, E.J. & HANWAY, J.J. Water-soluble carbohydrate accumulation in soybean plants. Agr. J., 68 (5): 697-700, 1976.
GODFREY-SAM-AGGREY, W. Effects on plant population on sole-crop cassava in Sierra Leone. Ezpl. Agric., 14: 239-244. 1978.
GOMES, F.P. Curso de estatística experimental. 7.o ed. São Paulo, Livraria Nobel, 1977. 430 p.
GROTELUESCHEN, R.D. & SMITH, D. Determination and identification of nonstructural carbohydrates removed from grass and legume tissue by various sulfuric acid concentrations, takadiastase, and water. J. Agr. Food Chem., 15(6): 1048-1051. 1967.
HUNT, R. Plant growth analysis. London, Edward Arnold, 1978. 60 p.
KETIKU, A.O. & OYENUG, V.A. Preliminary report on the carbohydrate constituents of cassava root and yam tuber. Nigerian J. of Sci., 4(1):25-30, 1970.
OELSLIGLE, D.D. Accumulation of dry matter, nitrogen, phosphorus, and potassium in cassava (Manihot esculenta Crantz). Turrialba, 25(1):85-87, 1975.
PACHECO, J.A.C. & CANAGIN, A. Amostragens de raízes de mandioca para determinação de amido. Bragantia, 14: 25-26, 1955.
SILVA, D.J. Análise de alimentos (métodos químicos e biológicos). Viçosa, Imprensa Universitária, 1981. 166 p.
SMITH, D. PAULSEN, G.M. & RAGUSE, C.A. Extration of total available carbohydrates from grass and legume tissue. Plant Physiol., 39: 960-962. 1964.
TELES, F.F.F., SILVEIRA, A.J. & BATISTA, C.M. Carboidratos acido-digeríveis e toxidez cianogênica de dez clones de mandioca (Manihot esculenta Crantz) cultivados em Minas Gerais, Rev. Ceres, 26 (147):459-464, 1979.
TELES, F.F.F., OLIVEIRA, M.L., SILVEIRA, A.J., FABRIS, J.D. & BATISTA, C.M. Carboidratos solúveis, redutores, de dez clones de mandioca (Manihot esculenta Crantz) cultivados em Minas Gerais. Rev. Ceres, 26 (147):513-516, 1979.
TELES, F. SILVEIRA, A.J., BATISTA, C.M., FEITOSA, EP.G. & RESENDE, J.L.M. Açúcares solúveis em mandioca (Manihot esculenta Crantz). Rev. Ceres, 27(151): 325-338, 1980.
UMANAH, E.E. A note on the variation of dry matter content (C.M.C.) along the length of cassava (Manihot utilissima Pohl). tubers. Trop. Root and Tuber Crops News Letter, 4: 34-37. 1971.
WHOLEY, D.W. & BOOTH, R. A comparison of simple methods for estimating starch content of cassava roots. J. Sci. Food Agric., 30(2): 158-164. 1979.
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