An electrochemical approach for citric acid treatment of corn starch granules

2016 ◽  
Vol 68 (5-6) ◽  
pp. 558-567
Author(s):  
Carmen Hernandez-Jaimes ◽  
Eduardo Jaime Vernon-Carter ◽  
Consuelo Lobato-Calleros ◽  
Luis Arturo Bello-Perez ◽  
Jose Alvarez-Ramirez
Keyword(s):  
Citric Acid ◽  
Acid Treatment ◽  
Corn Starch ◽  
Starch Granules ◽  
Electrochemical Approach

Impacts of Acid Treatment on the Characteristics of Native Corn Starch Granules

2011 ◽  
Vol 221 ◽  
pp. 72-77 ◽  
Author(s):  
Xin Jin ◽  
Shuan Qing Hou ◽  
Xiao Xu Sha ◽  
Liang Yu
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Acid Treatment ◽  
Corn Starch ◽  
Average Particle Size ◽  
Peak Temperature ◽  
Average Particle ◽  
Starch Granules ◽  
Acid Modification ◽  
Before And After

Native corn starches were acid-treated at 53 °C for hours in HCl aqueous solution. The peak temperature (Tp) and heat of gelatinization (ΔHgel) before and after treatments were determined. The average particle size, TG and viscosity were measured. The results showed that the viscosity of corn starch decreased from 630mPa to 4.6mPa after acid treatment for 6h. The average particle size decreased and ΔHgel decreased obviously after acid modification.

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

2008 ◽  
Vol 33 (3) ◽  
pp. 13-18 ◽  
Author(s):  
C. Beninca ◽  
I. M. Demiate ◽  
L. G. Lacerda ◽  
M. A. S. Carvalho Filho ◽  
M. Ionashiro ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Optical Microscopy ◽  
Acid Treatment ◽  
Corn Starch ◽  
Starch Granules ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Thermoanalytical Techniques ◽  
Physical Chemical

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 - DTA and 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.

Cereal grain digestion by selected strains of ruminal fungi

1993 ◽  
Vol 39 (4) ◽  
pp. 367-376 ◽  
Author(s):  
T. A. McAllister ◽  
Y. Dong ◽  
L. J. Yanke ◽  
H. D. Bae ◽  
K.-J. Cheng ◽  
...  
Keyword(s):  
Corn Starch ◽  
Fungal Growth ◽  
Wheat Starch ◽  
Cereal Grains ◽  
Starch Granules ◽  
Starch Digestion ◽  
Protein Matrix ◽  
Cereal Grain ◽  
Neocallimastix Patriciarum ◽  
Grain Starch

The ruminal fungi Orpinomyces joyonii strain 19-2, Neocallimastix patriciarum strain 27, and Piromyces communis strain 22 were examined for their ability to digest cereal starch. All strains digested corn starch more readily than barley or wheat starch. Orpinomyces joyonii 19-2 exhibited the greatest propensity to digest starch in wheat and barley, whereas the digestion of these starches by N. patriciarum 27 and P. communis 22 was limited. Media ammonia concentrations were lower when fungal growth was evident, suggesting that all strains assimilate ammonia. Fungi formed extensive rhizoidal systems on the endosperm of corn, but O. joyonii 19-2 was the only strain to form such systems on the endosperm of wheat and barley. All strains penetrated the protein matrix of corn but did not penetrate starch granules. Starch granules from all three cereals were pitted, evidence of extensive digestion by extracellular amylases produced by O. joyonii 19-2. Similar pitting was observed on the surface of corn starch granules digested by N. patriciarum 27 and P. communis 22, but not on wheat and barley starch granules. The ability of ruminal fungi to digest cereal grains depends on both the strain of fungus and the type of grain. The extent to which fungi digest cereal grain in the rumen remains to be determined.Key words: ruminal fungi, cereal grain, starch digestion, ruminant.

Effect of the Enzymatic Hydrolysis on Starch Properties

2015 ◽  
Vol 723 ◽  
pp. 701-704
Author(s):  
Jing Li
Keyword(s):  
Tensile Strength ◽  
Enzymatic Hydrolysis ◽  
Corn Starch ◽  
Modified Starch ◽  
Starch Granules ◽  
Compound Structure ◽  
Starch Properties ◽  
Better Than

In this article, corn starch was modified by α-amylase with different hydrolytic time (30, 60, 90 and 120 min) and the effects of modification technology on its properties of viscosity, compound structure and mechanical were studied. The result showed that structure of modified starch was conserved with hydrolytic time increased, whereas tensile strength were increased and viscosity was decreased. The performance of modified starch that hydrolyzed by 30 min was better than others and pinholes were generated in the surface of starch granules

Addition of galactomannans and citric acid in corn starch processed by extrusion: Retrogradation and resistant starch studies

2018 ◽  
Vol 83 ◽  
pp. 485-496 ◽  
Author(s):  
Erich von Borries-Medrano ◽  
Mónica R. Jaime-Fonseca ◽  
Miguel A. Aguilar-Méndez ◽  
Héctor I. García-Cruz
Keyword(s):  
Citric Acid ◽  
Resistant Starch ◽  
Corn Starch

Thermal behaviour of corn starch granules under action of fungal α-amylase

2008 ◽  
Vol 93 (2) ◽  
pp. 445-449 ◽  
Author(s):  
L. G. Lacerda ◽  
M. A. da Silva Carvalho Filho ◽  
I. M. Demiate ◽  
G. Bannach ◽  
M. Ionashiro ◽  
...  
Keyword(s):  
Thermal Behaviour ◽  
Corn Starch ◽  
Starch Granules

Effect of the Heat-Moisture Treatment on the Enzymatic Susceptibility of Corn Starch Granules

1995 ◽  
Vol 47 (6) ◽  
pp. 223-228 ◽  
Author(s):  
Célia M. L. Franco ◽  
César F. Ciacco ◽  
Débora Q. Tavares
Keyword(s):  
Corn Starch ◽  
Starch Granules ◽  
Heat Moisture Treatment ◽  
Moisture Treatment
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