Mechanical properties of native maize, wheat, and potato starches

Stasiak, Mateusz; Molenda, M.; Opaliński, I.; Błaszczak, Wioletta

doi:10.17221/348/2012-cjfs

Cited by 43 publications

(35 citation statements)

References 12 publications

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“…The values of diameters for native maize starch particles were equal to 5.8 µm (Stasiak et al, 2013). The shape coefficient of native maize starches was approximately 1.1 (Stasiak et al, 2013). These results corroborate the results of earlier investigations that native maize starch granules are angular, spherical and lenticular-shaped (Singh et al, 2003).…”

Section: Resultssupporting

confidence: 89%

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Sorptive properties of modified maize starch as indicators of their quality

Ocieczek¹,

Skotnicka²,

Baranowska³

2017

International Agrophysics

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The physical and adsorptive properties of three products of modified maize starch in terms of the susceptibility of starch granules to surface processes as affected by their physicochemical diversity was compared in this study, using five mathematical models. It was assumed that modification of native starch is an important factor affecting its adsorptive properties. The products under study differed significantly in terms of the distribution of the size and shape parameters of their granules. The Guggenheim, Anderson and de Boer equation, characterised by relatively low sums of square deviations and low and similar errors of their different parameters, was the most useful in the description of empirically determined isotherms of adsorption. Parameters of the Guggenheim, Anderson and de Boer equation were used to estimate the parameters of the product surface microstructure. Modification of native maize starch differentiated the size of the monolayer, specific surface of sorption, and characteristics of capillaries.

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Section: Resultssupporting

confidence: 89%

“…The size of the starch granule has an important influence on the functional application of some native starches (Builders and Arhewoh, 2016). The values of diameters for native maize starch particles were equal to 5.8 µm (Stasiak et al, 2013). The shape coefficient of native maize starches was approximately 1.1 (Stasiak et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Sorptive properties of modified maize starch as indicators of their quality

Ocieczek¹,

Skotnicka²,

Baranowska³

2017

International Agrophysics

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“…This material had distinctly different mechanical behaviour as compared to other starches. A similar effect was noted in earlier investigations in direct shear testing (Molenda et al, 2006 andStasiak et al, 2013). The lowest value of force (below 0.141 N) was obtained for maize starch.…”

Section: Resultssupporting

confidence: 89%

Breaking tester for examining strength of consolidated starch

Stasiak¹,

Molenda²,

Bańda³

et al. 2017

International Agrophysics

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A b s t r a c t. A new method based on the measurement of force required to break by bending a vertical column of consolidated powder was elaborated, and its results were compared with the ones obtained from the Jenike shear test. A new apparatus was built based on a vertical cylindrical chamber divided into two cylinders connected with a horizontal hinge. The apparatus was tested with samples of potato, maize and wheat starches with moisture content of 6, 12 and 17% and with the addition of a lubricant. Results of testing revealed significant differences in measured force required to rotate the upper part of the cylinder away from the lower one. The average force varied from 0.138 N for maize starch to 0.143 N for potato starch, while, for various moisture contents, the measured force varied from 0.135 N for 6% to 0.143 N for 17% mc. The results were compared with the results of a direct shear test.

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“…Some recent researchers focused on the determination of these values, designing specific tests or calibration procedures. Just to cite some of them working mainly in agricultural or biomass products: the Molenda group (Stasiak et al, 2007(Stasiak et al, , 2013, the Boac group (Boac et al, 2010), the Ayuga group (González-Montellano et al, 2012a;Ramírez-Gómez et al, 2014), the Ooi group (Chung and Ooi, 2011;Härtl and Ooi, 2011) or the Tijskens group (Vanstreels et al, 2005;Van Liedekerke et al, 2008).…”

Section: Discrete Element Methods In Buildings and Infrastructures Arementioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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Biosystem engineering is a discipline resulting from the evolution of the traditional agricultural engineering to include new engineering challenges related with biological systems, from the cell to the environment. Modern buildings and infrastructures are needed to satisfy crop and animal production demands. In this paper a review on the status of numerical methods applied to solve engineering problems in the field of buildings and infrastructures in biosystem engineering is presented. The history and basic background of the finite element method is presented. This is the first numerical method implemented and also the more developed one. The history and background of other two more recent methods, with practical applications, the computer fluids dynamics and the discrete element method are also presented. Besides, a review on the scientific and professional applications on the field of buildings and infrastructures for biosystem engineering needs is presented. Today we can simulate engineering problems with solids, engineering problems with fluids and engineering problems with particles and get to practical solutions faster and cheaper than in the past. The paper encourages young engineers and researchers to make progress these tools and their engineering applications. The capacities of all numerical methods in their present development status go beyond the present practical applications. There is a broad field to work on it. IntroductionThe present paper is a review of the numerical methods at present and their applications in solving engineering problems. The field is too wide to be considered in a single article. This is why the paper focuses on presenting the fundamentals of the most significant numerical methods that can be applied for buildings and infrastructures areas of biosystems engineering. The three next numerical methods will be considered: i) finite element method (FEM); ii) computer fluid dynamics (CFD); iii) discrete element method (DEM).In the paper the main features of these methods will be presented along with showing some examples in areas of biosystems engineering. Modern engineering can be considered to begin with the industrial revolution in the late eighteenth and early nineteenth century. From the very beginning, it has used the most powerful mathematical tools of the time in order to solve problems arising in practice. It was considered a fact that it was essential acquiring solid mathematical foundations for being a good engineer. The programs of studies from all Universities of the time prove it so. Even great figures on mathematics of the nineteenth and twentieth centuries were formally engineers. This symbiosis has produced good results for society. In the second half of XX Century, the fast development of computer science produced a great advance in numerical methods applied to physics and engineering.Based on this premise, the predictable future is that calculation and structural analysis in all fields of engineering will be based on modern numerical methods. This power...

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Mechanical properties of native maize, wheat, and potato starches

Cited by 43 publications

References 12 publications

Sorptive properties of modified maize starch as indicators of their quality

Sorptive properties of modified maize starch as indicators of their quality

Breaking tester for examining strength of consolidated starch

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

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