Wyniki wyszukiwania

1

Development of starch granule molecular and supramolecular structure

100%

Hedley C., Bogracheva T.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Oxidation of short-chain isoprenoids

86%

Siedlecka J., Sosinska E., Kania M., Kaczorowska E., Cmoch P., Masnyk M., Lozinska I., Derewiaka D., Obiedzinski M., Czarnocki Z., Danikiewicz W., Swiezewska E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 2

3

Molecular structure and biological function of von Willebrand factor

86%

Bykowska E.

Acta Biochimica Polonica

|

2007

|

tom 54

|

nr Supplement 4

4

What does lipid hydration tell us? A minireview

86%

Jendrasiak G. L., Smith R. L.

Cellular and Molecular Biology Letters

|

2000

|

tom 05

|

nr 1

The hydration of a variety of phospholipids has been studied, gravimetrically. The water adsorption isotherms obtained have been analyzed by the use of BET methodology. The major findings are as follows: Phospholipids containing choline, as part of their head group and having a glycerol backbone are „strong” water adsorbers; the nature and fluidity of the hydrocarbon chains do not control the „strong” vs „weak” nature of the water binding but do modulate the amount of adsorbed water. The number of methyl groups present on the N+ moiety of the head groups determines both the nature of the water binding as well as the amount of water adsorbed. The electrical charge on the phospholipid head group does not, in itself, determine the nature of the water binding; it does, however affect the amount of water bound. All of the phospholipids studied exhibit a very rapid rise in electrical conductivity as water is adsorbed; this rise reaches a limiting saturation value at or close to fnat for the completion of the first monolayer of water adsorbed. These findings are discussed in terms of the molecular structure of the phospholipids.

5

Effect of the soil type on the molecular structure, properties and conditions of occurrence of humous acids

86%

Ksiezopolska A.

Acta Agrophysica

|

2000

|

tom 35

The study presented here concentrates on the characteristics of the humous compounds of humic and fulvic acid fractions of ß-humus, originating from the typologically differentiated soils (podzolic soil and chernozem). The soils were chosen so as to emphasize differences between chemical structure and degree of aromatic nucleus condensation in the humous acids isolated from them. It was found that the structure of the humous substances isolated from the podzolic soil is characterised by the lowest degree of condensation of the aromatic nucleus and the lowest polymerisation, while the humous acids from the chernozem are characterised by the highest degree of condensation of the aromatic nucleus and the strongest polymerisation.

6

The theoretical study on the molecular structure and electronic properties of harmane

86%

Kowalska A., Stobiecka A.

Zeszyty Naukowe. Politechnika Łódzka. Chemia Spożywcza i Biotechnologia

|

2007

|

tom 71

7

Dependence between the antimicrobial activity and the molecular structure of phenolic acids and their salts with alkali metals as biologically active substances present in the natural products

72%

Piekut J., Kowczyk-Sadowy M., Krasowska M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2020

|

tom 601

8

Principles and problems of the tractors transport-pull units unitization analysis

72%

Tayanovsky G. A., Tanas W.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

|

2004

|

tom 04

9

Chemical regulation of photorespiratory hydrogen peroxide-induced cell death in catalase deficient (cat2) Arabidopsis plants

72%

Kerchev P., Denecker J., Muhlenbock P., Van Breusegem F.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2013

|

tom 94

|

nr 2

10

Light scattering on Chlorella vulgaris cell

72%

Krol T., Zielinski A., Witkowski K.

Bulletin of the Polish Academy of Sciences. Earth Sciences

|

1993

|

tom 41

|

nr 2

11

Molecular structure and physico-chemical properties of pseudo cereal starches

72%

Praznik W., Huber A.

Żywność Nauka Technologia Jakość. Suplement

|

2000

|

tom 07

|

nr 2

Glucans of pseudo cereal starches with significant differences in their branching pattern - amaranth, quinoa and buckwheat - were investigated upon the correlation of their molecular characteristics with technological properties. Consistency of glucan conformation, in particular persistance against elevated temperature, acidic pH and mechanical stress was investigated with respect to consequences on molecular and supermolecular structures of starch/DMSO-solutions. For analytical purposes starch glucans were separated by semi-preparative size-exclusion chromatography (SEC) and obtained fractions were tested upon their iodine-complexing potential. Amaranth was found to be short chain branched (scb ≡ amylopectin type); quinoa to be scb-type, but consisting of longer branches than amaranth; buckwheat was found to be a mixture of scb-glucans with approx. 24% of long- chain branched (lcb ≡ amylose-type) glucans. Molecular weight (degree of polymerization) for DMSO-dissolved starches was determined absolutely by means of aqueous SEC. Weight average molecular weights (Mw) were found close to 12-106 g/M for the investigated samples. Dimensions of starch glucan coils were estimated from SEC-data combined with universal calibration: values between 2-40 nm were found without significant differences for the three starches. However, in spite of these minor differences, the investigated starches differ significantly in their inter- and intramolecular interaction potential. Thus, obviously interaction potentials are strongly controlled by branching patterns, glucan-coil packing densities and by the ability to form supermolecular structures.

12

Peculiarities of the chemical composition and the molecular structure of peat humic substances

72%

Bambalov N., Smychnik T., Maryganova V., Strigutsky V., Dite M.

Acta Agrophysica

|

2000

|

tom 26

The main result of the investigation concerning pecularities of peat humic substances ( humic and fulvic acids)with the use of CNMR spectroscopy, thermal analysis, pyrolysis mass- spectrometry, oxidation destruction, gel- chromatography and electronic paramagnetic resonance are shown in this paper.

13

Hiring cell gatekeepers – ABC transporters in plant biotechnology

58%

Szewczak A., Ziomkiewicz I., Jasinski M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2011

|

tom 92

|

nr 2

14

Estrogen receptors - state of art

58%

Popiela A., Panszczyk M., Gabrys M., Borzecki A., Slomczynska M., Baranowski W.

Polish Journal of Environmental Studies

|

2004

|

tom 13

|

nr Suppl.2, Part 1

Authors performed a review of a current literature related with a structure, physiology and effects of estrogen receptor function. Our article contains information about molecular structure of SHR family (steroid hormone receptors), a way of binding with their ligands. We tried to present step by step a mechanism of receptor reaction with nucleic acids also a mechanism of initiation of transcription. We clearly described a function and action of cofactor proteins in a process of receptor activation. We mentioned about fitoestro- gens influence on estrogen receptor molecules.

15

How to study G-quadruplex structures

58%

Malgowska M., Gudanis D., Teubert A., Dominiak G., Gdaniec Z.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2012

|

tom 93

|

nr 4

16

Profiles of phenotype resistance to antibiotic other than beta-lactams in Klebsiella pneumoniae ESBLs-producers, carrying blaSHV genes

58%

Sacha P., Ojdana D., Wieczorek P., Szpak A., Hauschild T., Milewski R., Krawczyk M., Kaczynska K., Tryniszewska E.

Folia Histochemica et Cytobiologica

|

2010

|

tom 48

|

nr 4

17

Wheat - a challenging substrate for starch production

58%

Bergthaller W., Kersting H. J.

Żywność Nauka Technologia Jakość. Suplement

|

2000

|

tom 07

|

nr 2

In contrast to the world-wide given situation for maize as the main substrate in starch isolation, wheat gains an advantageous position in the European starch industry although technical starch yield cannot compete fully material prices. Its remarkable position profits also from wheat gluten as valuable byproduct. Further indication for rising preference can be seen in the installation of new processing capacities in Europe. However, the economic situation of wheat starch production follows unavoidable fluctuations of wheat gluten markets. Political decisions play an important role, too. The challenging situation connected with wheat as substrate for starch extraction is result of developments in equipment and remodelling of technology. The most important contribution consisted in an obvious shift of the relation of water to flour used for flour/water mixture preparation, starch and gluten extraction, and refining. This was initialised mainly by the introduction of separation techniques using centrifugal principles. With respect to limited availability of water and increasing costs for waste water treatment reduction of water supply is a steady target. In close connection to developments in separation technology wheat and wheat flour should gain extended attraction. Published standards are limited and reveal at most characteristics oriented to the. Martin process. With respect to recent developments in technology, alternative testing procedures have been proposed. Results demonstrate the suitability and specificity of the „Mixer method", a procedure adapted to flour/water relations in centrifugal separation. But, the time consuming procedure restricts general application. With respect to characteristics describing substrate properties, parameters of conventional wheat quality evaluation systems are measured additionally and assigned to quantities of the mixer method. An extended data base is expected to provide with measures to select the most suitable system for classification of wheat grain and wheat flour. After all, the outlook should not omit to mention developments in conventional breeding and genetic engineering that will allow to affect starch granule characteristics, molecular structure and composition of wheat starch offering promising prospects in functionality and application of wheat starch.

18

NMR and computational comparative study of the amylose - Bengal Rose complexing in DMSO solution

51%

Napierala D. M., Popenda M.

Żywność Technologia Jakość. Suplement

|

1996

|

nr 2

28-35

19

Podstawy klasyfikacji i syntezy bialek glutenowych ziarna pszenicy

44%

Majewska K.

Żywność Nauka Technologia Jakość

|

1999

|

tom 06

|

nr 2

15-25

Postęp w metodach frakcjonowania i badania struktury molekularnej białek glutenowych oraz rozszerzenie wiedzy na ich temat z zakresu genetyki, umożliwiły opracowanie nowej klasyfikacji. Klasyfikacja ta jest oparta bardziej na składzie i strukturze niż różnicach w rozpuszczalności. Zarówno gliadyny jak i gluteniny nazwano prolaminami. Tak zdefiniowane prolaminy podzielono na 3 grupy w oparciu o sekwencję aminokwasów występujących w białkach i chromosomową lokalizację strukturalnych genów kodujących syntezę odpowiednich białek. Należą do nich prolaminy HMW (o wysokiej masie cząsteczkowej), prolaminy ubogie w siarkę i bogate w siarkę. Badania wykazały, że zmienność lokalizacji genów strukturalnych kodujących syntezę białek glutenowych pszenicy ma wpływ na zmiany jej wartości wypiekowej. Próby genetycznej kontroli syntezy tych białek poprzez manipulowanie ekspresją odpowiednich genów mogą służyć polepszeniu wartości wypiekowej pszenicy.

Ograniczanie wyników

Development of starch granule molecular and supramolecular structure

Oxidation of short-chain isoprenoids

Molecular structure and biological function of von Willebrand factor

What does lipid hydration tell us? A minireview

Effect of the soil type on the molecular structure, properties and conditions of occurrence of humous acids

The theoretical study on the molecular structure and electronic properties of harmane

Dependence between the antimicrobial activity and the molecular structure of phenolic acids and their salts with alkali metals as biologically active substances present in the natural products

Principles and problems of the tractors transport-pull units unitization analysis

Chemical regulation of photorespiratory hydrogen peroxide-induced cell death in catalase deficient (cat2) Arabidopsis plants

Light scattering on Chlorella vulgaris cell

Molecular structure and physico-chemical properties of pseudo cereal starches

Peculiarities of the chemical composition and the molecular structure of peat humic substances

Hiring cell gatekeepers – ABC transporters in plant biotechnology

Estrogen receptors - state of art

How to study G-quadruplex structures

Profiles of phenotype resistance to antibiotic other than beta-lactams in Klebsiella pneumoniae ESBLs-producers, carrying blaSHV genes

Wheat - a challenging substrate for starch production

NMR and computational comparative study of the amylose - Bengal Rose complexing in DMSO solution

Podstawy klasyfikacji i syntezy bialek glutenowych ziarna pszenicy