diplomsko delo univerzitetnega študijskega programa
Povzetek
Namen diplomskega dela je bil sintetizirati saharozo palmitat, ki se uporablja v kozmetični, farmacevtski in prehrambeni industriji. Osredotočili smo se na sintezo saharoza palmitata v t-butanolu, vendar smo za primerjavo izvedli tudi sinteze v drugih organskih topilih, kot so etil metil keton, aceton in tert-amil alkohol. Encimsko katalizirano sintezo saharoza palmitata smo izvedli v mešalnem šaržnem reaktorju pri temperaturi 60 °C. Reakcijo smo katalizirali z imobilizirano lipazo B iz Candida antarctica. Produkt reakcije je bil saharoza mono-, di- in tri-palmitat. Reakcije smo izvedli z različnimi množinskimi razmerji substratov (palmitinska kislina : saharoza). Najvišjo presnovo smo dobili v primeru, ko je bilo množinsko razmerje substratov (palmitinska kislina : saharoza) 10 : 90.
Ključne besede
encimsko katalizirana sinteza;saharoza palmitat;organska topila;t-butanol;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2011 |
Izvor: |
Maribor |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo |
Založnik: |
[M. Bahlen] |
UDK: |
577.15:547.458.2(043.2) |
COBISS: |
15835158
|
Št. ogledov: |
3205 |
Št. prenosov: |
145 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Synthesis of sucrose palmitate in organic solvents |
Sekundarni povzetek: |
The purpose of this study was to synthesize sucrose palmitate used in cosmetics, pharmaceutical and food industries. Our focus was mainly on the synthesis of sucrose palmitate in tert-butanol. For comparison the synthesis of sucrose palmitate in other organic solvents like ethyl methyl ketone, acetone and tert-amil alcohol were also carried out. Enzyme catalyzed synthesis of sucrose palmitate was carried out at 60 °C in a batch stirred reactor. Reactions were catalyzed by immobilized lipase B from Candida antarctica. Product was sucrose mono-, di- and three-palmitate. Reactions were carried out with different molar ratio of substrates (palmitic acid : sucrose). The highest conversion was obtained when molar ratio of substrates was (palmitic acid : sucrose) 10 : 90. |
Sekundarne ključne besede: |
enzymatic synthesis;lipase B from Candida antarctica;sucrose palmitate;organic solvents;t-butanol; |
URN: |
URN:SI:UM: |
Vrsta dela (COBISS): |
Diplomsko delo |
Komentar na gradivo: |
Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo |
Strani: |
XIV, 52 f. |
Ključne besede (UDK): |
mathematics;natural sciences;naravoslovne vede;matematika;biological sciences in general;biologija;material bases of life;biochemistry;molecular biology;biophysics;biokemija;molekularna biologija;biofizika;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;organic chemistry;organska kemija; |
ID: |
1015872 |