Thermal behavior of corn starch granules modified by acid treatment at 30 and 50°C

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Cleoci Beninca
Ivo Mottin Demiate
Luiz Gustavo Lacerda
Marco Aurélio da Silva Carvalho Filho
Massao Ionashiro
Egon Schnitzler

Abstract

Unprocessed native starches are structurally too weak and functionally too restricted for application in today’s advanced food technologies. Processing is necessary to engender a range of functionality. Naturals or natives starches can be modified by using several methods physical, chemical, enzymatic or combined, according industrial purposes. In this work, native corn starch was hydrolyzed by hydrochloric acid solution and investigated by using thermoanalytical techniques (thermogravimetry – TG, differential thermal analysis – DTAand differential scanning calorimetry – DSC), as well as optical microscopy and X-ray diffractometry. After acid treatment at 30 and 50°C, a decrease of gelatinization enthalpy (ΔHgel) was verified. Optical microscopy and X-ray diffractometry allowed us to verify the granules contorn and rugosity typical of cereal starches.

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How to Cite
Beninca, C., Demiate, I. M., Lacerda, L. G., Carvalho Filho, M. A. da S., Ionashiro, M., & Schnitzler, E. (2008). Thermal behavior of corn starch granules modified by acid treatment at 30 and 50°C. Eclética Química, 33(3), 13–17. https://doi.org/10.26850/1678-4618eqj.v33.3.2008.p13-17
Section
Original articles

References

S. Jobling, Plant Biotech, 7, (2004), 210.

N. Singh, J. Singh, L. Kaur, N.S. Sodhi and B. S. Gill, Food Chem, 81, (2003), 219.

Y. Takeda, S. Tomooka and S. Hizukuri, Carbohydr. Res,

, (1993), 267.

H. Zobel, Starch/Stärke, 40, (1988), 44.

W. A. Atwell, L. F. Hood, D. R. Lineback, E. Varriano-

Marston and H. F. Zobel, Cereal Food Worlds, 33, (1988), 306.

C. G. Biliaderis. Canadian J. Physiol. Pharmacol, 69, (1991), 60.

E. Rudnik, G. Matuschek, N. Milanov and A. Kettrup, J. Therm. Anal. Cal, 85, (2006), 267.

O. S. Lawal, K. O. Adebowale, B. M. Ogunsanwo, L. L. Barba and N. S. Ilo, Int. J. Biol. Macromol, 35, (2005), 71.

P. Aggarwal and D. Dollimore. Thermochim. Acta, 319,

(1998), 17.

P. Aggarwal, D. Dollimore and K. Heon, J. Therm. Anal,

, (1997), 7.

G. Zhang, Z. Ao and B. R. Hamaker. Biomacromol. 7, (2006), 3252.

M. P. Cereda and O Vilpoux. Tecnologia, Usos e Potencialidades de tuberosas amiláceas Latino Americanas,

Fund. Cargill, São Paulo, 2003.

C. G. Mothé, D. Z. Correia, F. P de França and A. T. Riga,

J. Therm. Anal. Cal. 85, (2006), 31.