Physical and structural properties of potato starch modified by dielectric treatment with different moisture content

2018 ◽  
Vol 118 ◽  
pp. 1455-1462 ◽  
Author(s):  
Tianyu Xia ◽  
Min Gou ◽  
Guoquan Zhang ◽  
Wenhao Li ◽  
Hao Jiang
Keyword(s):  
Moisture Content ◽  
Structural Properties ◽  
Potato Starch

Granular size of potato starch affects structural properties, octenylsuccinic anhydride modification and flowability

2016 ◽  
Vol 212 ◽  
pp. 453-459 ◽  
Author(s):  
Chan Wang ◽  
Chuan-He Tang ◽  
Xiong Fu ◽  
Qiang Huang ◽  
Bin Zhang
Keyword(s):  
Structural Properties ◽  
Potato Starch

Moisture Effective Diffusivity in Porous Media with Different Physical Properties

2006 ◽  
Vol 258-260 ◽  
pp. 207-212
Author(s):  
Miranda M.N.N. ◽  
M.A. Silva
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Moisture Content ◽  
Mass Transport ◽  
Physical Properties ◽  
Pore Size ◽  
Structural Properties ◽  
Effective Diffusivity ◽  
Nay Zeolite ◽  
Moisture Effective Diffusivity

In the drying of porous media, the mass transport occurs in the pores as well as on the surface of the solid. The mechanisms involved can take place simultaneously, influenced by the predominant one and can change depending on the moisture content. In this work, the moisture effective diffusivity was estimated in solids with distinct structural properties in order to verify the predominant mechanisms according to the moisture content, analyzing the influence of the physical properties. The materials studied were NaY Zeolite, Kaolin, Silica and Alumina. The results of diffusion coefficient present a minimum at low moisture content that can be related to pore size.

Iodine-binding in Granular Starch: Different Effects of Moisture Content for Corn and Potato Starch

2008 ◽  
Vol 60 (3-4) ◽  
pp. 165-173 ◽  
Author(s):  
Debora Saibene ◽  
Henry F. Zobel ◽  
Donald B. Thompson ◽  
Koushik Seetharaman
Keyword(s):  
Moisture Content ◽  
Potato Starch ◽  
Granular Starch

scholarly journals Karakteristik Pati Ubi Jalar Crem (Ipomea batatas) Termodifikasi HMT pada Berbagai Kondisi Kadar Air dan Temperatur

2016 ◽  
Vol 8 (2) ◽  
pp. 61
Author(s):  
Virna Muhardina ◽  
Lukmanul Hakim ◽  
Zaidiyah Zaidiyah ◽  
Anshar Patria ◽  
Ismail Sulaiman
Keyword(s):  
High Temperature ◽  
Moisture Content ◽  
Water Content ◽  
Dietary Fiber ◽  
Sweet Potato ◽  
Potato Starch ◽  
Total Dietary Fiber ◽  
Heat Moisture Treatment ◽  
Moisture Treatment ◽  
Sweet Potato Starch

Sweet potato starch characteristic of local variety using heat moisture treatment with different level of moisture content and temperatureThe aim of this study is to modify local variety sweet potato starch (cream flesh color) in order to produce the optimal dried-noodle based starch. Native starch was maintained in varied water content (20%, 25% and 30%) and heat moisture treatment (HMT) by exposing the starch in high temperature, i.e. 90oC, 95oC, 100oC and 110oC for 3 h. The treated starch was analyzed using some parameters such as: swelling power, solubility, SEM (scanning electron microscopy) and total dietary fiber. Based on this study, swelling power shows decreasing as increasing both HMT temperature and starch water content. In other hand, solubility shows not significant different among all treatments. The treated-starch granule which is exposed to high temperature has irregular shape compared to granule in lower temperature. Furthermore, total dietary fiber shows significant different among the starch moisture content and the temperature treatment. HMT modification at 100oC and starch water content of 30% is chosen as the best results

Production of active film based on potato starch containing Zedo gum and essential oil of Salvia officinalis and study of physical, mechanical, and antioxidant properties

2019 ◽  
Vol 33 (7) ◽  
pp. 915-937 ◽  
Author(s):  
Mahla Pirouzifard ◽  
Roghiye Ashrafi Yorghanlu ◽  
Sajad Pirsa
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Moisture Content ◽  
Composite Film ◽  
Potato Starch ◽  
Antioxidant Properties ◽  
Salvia Officinalis ◽  
Vapor Permeability ◽  
Active Film ◽  
Control Film

In this study, biodegradable/antioxidant active film based on potato starch was provided. Composite films of potato starch/Zedo gum/ Salvia officinalis essential oil were provided in different percents of Zedo gum (0.5–1.5%) and S. officinalis essential oil (0–500 µl). The characters of composite film, including physical, mechanical, and antioxidant properties were studied. The results showed that adding different amounts of Zedo gum and essential oil to starch film causes a significant decrease ( p < 0.05) in moisture content, solubility, and film water vapor permeability (WVP). The film containing 1.5% gum and 500 µl of essential oil had minimum moisture content, solubility, and WVP. Results showed that the addition of Zedo gum significantly increased the thickness and opacity of the films and reduced the transparency of the films. Increasing the essential oil is significant on the film opacity and leads to a decrease in the passage of light from the films. By adding different amounts of gum, the antioxidant content of the films was significantly increased compared to the control film (pure starch film). Also, increasing the concentration of essential oil in the film composition caused a significant increase in the antioxidant activity of the films ( p < 0.05). Modified starch films containing 1.5% gum (without essential oil) with 62.64% antioxidant activity and film with 1.5% gum and 500 µl essential oils with 68.35% antioxidant activity had the highest antioxidant activity. The addition of salvia essential oil and Zedo gum significantly decreased the elongation and tensile strength of the potato starch film ( p < 0.05). Finally, the potato starch composite film containing Zedo gum and salvia essential oil showed excellent physical and antioxidant properties and had an excellent ability to be used in the food packaging industry.

scholarly journals Chemical and structural properties of sweet potato starch treated with organic and inorganic acid

2014 ◽  
Vol 52 (9) ◽  
pp. 5745-5753 ◽  
Author(s):  
A. Surendra Babu ◽  
R. Parimalavalli ◽  
K. Jagannadham ◽  
J. Sudhakara Rao
Keyword(s):  
Structural Properties ◽  
Sweet Potato ◽  
Potato Starch ◽  
Inorganic Acid ◽  
Sweet Potato Starch

scholarly journals Two-stage agglomeration of fine-grained herbal nettle waste

2017 ◽  
Vol 31 (4) ◽  
pp. 515-523 ◽  
Author(s):  
Sławomir Obidziński ◽  
Magdalena Joka ◽  
Olga Fijoł
Keyword(s):  
Particle Size ◽  
Moisture Content ◽  
Potato Starch ◽  
Process Temperature ◽  
Starch Solution ◽  
Two Stage ◽  
Fine Grained ◽  
Pellet Density ◽  
Binder Material

Abstract This paper compares the densification work necessary for the pressure agglomeration of fine-grained dusty nettle waste, with the densification work involved in two-stage agglomeration of the same material. In the first stage, the material was pre-densified through coating with a binder material in the form of a 5% potato starch solution, and then subjected to pressure agglomeration. A number of tests were conducted to determine the effect of the moisture content in the nettle waste (15, 18 and 21%), as well as the process temperature (50, 70, 90°C) on the values of densification work and the density of the obtained pellets. For pre-densified pellets from a mixture of nettle waste and a starch solution, the conducted tests determined the effect of pellet particle size (1, 2, and 3 mm) and the process temperature (50, 70, 90°C) on the same values. On the basis of the tests, we concluded that the introduction of a binder material and the use of two-stage agglomeration in nettle waste densification resulted in increased densification work (as compared to the densification of nettle waste alone) and increased pellet density.

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