METHOD FOR TARGETED CHANGE IN PHYSICO-CHEMICAL PROPERTIES OF NATIVE STARCHES BY THE METHOD OF COMBINATOR

2020 ◽  
Vol 14 (1(51)) ◽  
pp. 16-30
Author(s):  
A. A. Zabolotets ◽  
V. V. Litvyak ◽  
A. I. Ermakov
Keyword(s):  
Grain Size ◽  
Chemical Properties ◽  
Granule Size ◽  
Botanical Origin ◽  
Combinatorial Method ◽  
Granulometric Analysis ◽  
Physico Chemical ◽  
Average Size ◽  
High Amylose ◽  
Environmentally Friendly Method

A detailed granulometric analysis of native starches of various botanical origin was carried out: sorghum with a granule size of 3,5–21,7 μm and an average size of 11,0 μm, wheat with a granule size of 2,8–30,7 μm and an average size of 12,4 μm, rice with a granule size of 2,7–7,9 μm and an average size of 5,3 μm, triticale with a granule size of 4,0–30,7 μm and an average size of 13,2 μm, rye with a granule size of 4,9–42,8 μm and an average size of 21,2 μm, pea with a granule size of 6,1–32,3 μm and an average size of 20,4 μm, chickpea with a granule size of 6,0–25,6 μm and an average size of 14,8 μm, amaranth with a granule size of 0,5–1,5 μm and an average size of 1,1 μm, barley with a granule size of 3,0–21,4 μm and an average size of 10,9 μm, tapioca with a granule size of 2,8–31,2 μm and an average size of 10,6 μm, oat with a granule size of 3,96–14,91 μm and an average size of 7,39 μm, potato with a granule size of 7,7–60,0 μm and an average size of 21,7 μm, corn with a grain size of 3,6–19,2 μm and an average size of 9,8 μm, corn high amylose with a granule size of 3,3–11,65 μm and an average size of 7,11 μm, corn high amylopectin with a granule size of 4,26–18,26 μm and an average size of 9,94 μm, wheat from the «Shortandinskaya 95» variety With a granule size of 1,74–20,48 μm and an average size of 7,05 μm, wheat from the «Astana» variety with a granule size of 2,52–26,74 μm and an average size of 8,30 μm, wheat from the «Akmola-2» variety with a granule size of 2,43–26,22 μm and an average size of 8,11 μm. Based on the granulometric analysis of native starch, an innovative, highly effective, economical and environmentally friendly method of purposefully changing the physicochemical properties of native starches of various botanical origin was developed using the combinatorial method.

scholarly journals Dynamics of the Physico-chemical Properties of Sediments along the Bandama River in the Department of Niakaramadougou, Northern Côte d’Ivoire

2019 ◽  
pp. 739-750
Author(s):  
N’Doufou Gnosseith Huberson Claver ◽  
Kouadio Koffi Hypolithe ◽  
De Lasm Omer Zephir ◽  
Zogoury Eddie Constant Fabrice
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Chemical Properties ◽  
Statistical Analyses ◽  
The Other ◽  
Eastern Shore ◽  
Chemical Parameters ◽  
Sediment Analysis ◽  
Granulometric Analysis ◽  
Physico Chemical

This work focuses on analyzing of physico-chemical properties of sediment affected by frequent floods along the eastern shore of the Bandama River in the department of Niakaramadougou. Sampling was from 4 excavated graves at two positions of studied area, one near the stream and the other one far away from the stream.. Samples collected were analyzed, including texture with granulometric analysis made by the Robinson pipette, and standard sediment analysis methods for measuring organic carbon (OC), nitrogen (N), and other chemical properties including pH, organic matter (OM), and C/N ratio. Statistical analyses were carried out to assess the differences between the physico-chemical parameters at different sampling areas. Differences are significant when comparing areas that are highly affected by floods and areas that are less affected by floods, especially for concentrations of OM, OC and nitrogen. Results show that successive floods are influencing directly the dynamic of physico-chemical properties of the sediments along the shore.

scholarly journals Effect of Grain Size on Selected Physico-Chemical Properties of Clay

2009 ◽  
Vol 5 (5) ◽  
pp. 610-612 ◽  
Author(s):  
Osumanu Haruna Ahmed ◽  
Nik Muhamad Ab. Majid ◽  
Mohamadu Boyie Jalloh
Keyword(s):  
Grain Size ◽  
Chemical Properties ◽  
Physico Chemical

scholarly journals Effect of p -TsOH pretreatment on separation of bagasse components and preparation of nanocellulose filaments

2020 ◽  
Vol 7 (9) ◽  
pp. 200967
Author(s):  
Chengqi Feng ◽  
Juan Du ◽  
Shuai Wei ◽  
Chengrong Qin ◽  
Chen Liang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Transmission Electron Microscopy ◽  
Chemical Properties ◽  
Crystallinity Index ◽  
Degree Of Polymerization ◽  
Efficient Separation ◽  
Transmission Electron ◽  
Physico Chemical ◽  
Average Size

The efficient separation of bagasse components was achieved by p -toluenesulfonic acid ( p -TsOH) pretreatment. The effects of p -TsOH dosage, reaction temperature and reaction time on cellulose, hemicellulose and lignin contents were studied. Eighty-five per cent of lignin was dissolved, whereas the cellulose loss was minimal (less than 8.1%). Cellulose-rich water-insoluble residual solids were obtained. The degree of polymerization of cellulose decreased slightly, but the crystallinity index (CrI) increased from 52.0% to 68.1%. It indicated that the highly efficient delignification of bagasse was achieved by p -TsOH pretreatment. The nanocellulose filaments (CNFs) were produced by the treated samples. The physico-chemical properties of CNFs were characterized by transmission electron microscopy and thermogravimetric analysis. The results show that the CNFs have smaller average size and higher thermal stability. It provides a new method for CNFs.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Physico-Chemical Properties of Recombinant Desulphatohirudin

1990 ◽  
Vol 63 (03) ◽  
pp. 499-504 ◽  
Author(s):  
A Electricwala ◽  
L Irons ◽  
R Wait ◽  
R J G Carr ◽  
R J Ling ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Gel Filtration ◽  
Chemical Properties ◽  
Alpha Helix ◽  
Apparent Molecular Weight ◽  
Correlation Spectroscopy ◽  
Nmr Studies ◽  
Recombinant Hirudin ◽  
Physico Chemical ◽  
Recombinant Molecule

SummaryPhysico-chemical properties of recombinant desulphatohirudin expressed in yeast (CIBA GEIGY code No. CGP 39393) were reinvestigated. As previously reported for natural hirudin, the recombinant molecule exhibited abnormal behaviour by gel filtration with an apparent molecular weight greater than that based on the primary structure. However, molecular weight estimation by SDS gel electrophoresis, FAB-mass spectrometry and Photon Correlation Spectroscopy were in agreement with the theoretical molecular weight, with little suggestion of dimer or aggregate formation. Circular dichroism studies of the recombinant molecule show similar spectra at different pH values but are markedly different from that reported by Konno et al. (13) for a natural hirudin-variant. Our CD studies indicate the presence of about 60% beta sheet and the absence of alpha helix in the secondary structure of recombinant hirudin, in agreement with the conformation determined by NMR studies (17)

Physico-chemical properties of the rare-earth metals, scandium, and yttrium

1963 ◽  
Vol 79 (2) ◽  
pp. 263-293 ◽  
Author(s):  
E.M. Savitskii ◽  
V.F. Terekhova ◽  
O.P. Naumkin
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Chemical Properties ◽  
Physico Chemical ◽  
The Rare Earth

Physico chemical properties and gas adsorption separation characteristics of Itaya zeolite and its modified products.

1990 ◽  
Vol 39 (442) ◽  
pp. 996-1000 ◽  
Author(s):  
Ayao TAKASAKA ◽  
Hideyuki NEMOTO ◽  
Hirohiko KONO ◽  
Yoshihiro MATSUDA
Keyword(s):  
Gas Adsorption ◽  
Chemical Properties ◽  
Physico Chemical
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