Projects / Programmes
Biokemijska in biofizikalno-kemijska karakterizacija naravnih snovi (Slovene)
January 1, 1999
- December 31, 2003
Code |
Science |
Field |
Subfield |
4.03.00 |
Biotechnical sciences |
Plant production |
|
1.05.00 |
Natural sciences and mathematics |
Biochemistry and molecular biology |
|
1.04.00 |
Natural sciences and mathematics |
Chemistry |
|
Code |
Science |
Field |
T430 |
Technological sciences |
Food and drink technology |
P400 |
Natural sciences and mathematics |
Physical chemistry |
P310 |
Natural sciences and mathematics |
Proteins, enzymology |
T390 |
Technological sciences |
Polymer technology, biopolymers |
Researchers (16)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
01522 |
PhD Veronika Abram |
Natural sciences and mathematics |
Principal Researcher |
2002 - 2003 |
312 |
2. |
07028 |
PhD Helena Abramovič |
Biotechnical sciences |
Researcher |
2002 - 2003 |
250 |
3. |
15581 |
PhD Blaž Cigić |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
353 |
4. |
15840 |
PhD Marjan Donko |
Biotechnical sciences |
Researcher |
2002 - 2003 |
32 |
5. |
17797 |
Andreja Habjan |
|
Researcher |
2002 - 2003 |
0 |
6. |
06986 |
PhD Milica Kač |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
252 |
7. |
23483 |
PhD Enej Kuščer |
Biotechnical sciences |
Researcher |
2003 |
36 |
8. |
15821 |
PhD Marko Luci |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
10 |
9. |
17798 |
Jana Martinuč |
|
Researcher |
2002 - 2003 |
0 |
10. |
22493 |
PhD Igor Milek |
Natural sciences and mathematics |
Researcher |
2003 |
14 |
11. |
10873 |
PhD Nataša Poklar Ulrih |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
798 |
12. |
09633 |
PhD Darja Rudan-Tasič |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
134 |
13. |
15466 |
PhD Mihaela Skrt |
Biotechnical sciences |
Researcher |
2002 - 2003 |
150 |
14. |
08384 |
PhD Nataša Šegatin |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
132 |
15. |
19103 |
Andreja Štepec |
Natural sciences and mathematics |
Researcher |
2002 - 2003 |
15 |
16. |
19641 |
Mateja Vidmar |
|
Researcher |
2002 - 2003 |
16 |
Organisations (1)
Abstract
The majority of natural substances exist in the form of high molecular weight compounds, for example polysaccharides, proteins of plant and animal origin, or polyphenols. The substances are heterogenous both from the viewpoint of chemical structure and average molar mass. The average composition of natural macromolecular compounds is normally also dependent on their origin. In recent times natural substances are ever more frequently being used as additives for extending lifetime of foods. The lifetime is dependent on a number of factors, such as the possible development of microorganisms, oksidation and photochemical reactions. In the framework of the proposed research programme we will study a number of natural substances such as, for example, pectin, certain proteins of animal and vegetable origin, polyphenols, smaller molecules which function as aromas and some artificial substances, which are used in food industry as additives and humectants. For the above mentioned compounds we will determine a number of physico-chemical parameters, such as osmotic and transport properties, volumetric properties, kinetic parameters, elektrochemical parameters, peptide profiles of hydrolisates, polydispersion, and enzyme activity. Thus we will study the antioxidative properties of phenolic compounds isolated from houselecle, and using a spectroscopic method, determine their characteristic cromophoric groups and the degree and extent of their self-association. In the case of certain artificial substances which function as humectants, for example polyethyleneglycol, we will determine the volumetric, transport and osmotic properties of their aqueous solutions. By measurement of their thermodynamic properties we will determine the osmotic potential of water and the thermodynamic activity of water as a function of the concentration of the solute and its average molar mass. Many plant and animal extracts are important components of food because of their content of protein (soya) and their nutritional value related to their content of essential aminoacids. But their use, especially in acid foodstuffs, is limited by low solubility and the tendency to form emulsions. Hence we will modify such proteins by chemical and enzymatic methods.
Hydrolysis of proteins by itself greatly improves their solubility. As raw material for preparation of hydrolysates we will employ high quality soya hydrolysates and concentrates, concentrates of milk proteins, gluten and some other proteins.
Significance for the country
.
Most important scientific results
Final report
Most important socioeconomically and culturally relevant results
Final report