| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:OPTIMIRANJE BIOPROCESNIH POGOJEV IN PARAMETERIZACIJA RASTNE KRIVULJE GOJENJA PROBIOTIČNE BIOPOPULACIJE V EKOLOŠKO PRIDELANEM MLEKU
Authors:ID Leskovar, Klavdija (Author)
ID Goršek, Andreja (Mentor) More about this mentor... New window
ID Leitgeb, Maja (Comentor)
Files:.pdf UNI_Leskovar_Klavdija_2011.pdf (1,67 MB)
MD5: 2D566EF40B0FFDD90057403F24D9CCA0
PID: 20.500.12556/dkum/ff427e12-5666-4ffe-abc7-dada00ac04f1
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Onesnaženost okolja je pripeljala tako daleč, da je v sodobni družbi moč zaslediti povečano povpraševanje po bio-izdelkih in izdelkih, ki ugodno vplivajo na naše zdravje. V to skupino živil sodijo tudi probiotiki in prebiotiki. Kot probiotik z zdravilnimi učinki se že stoletja uporablja kefir, ki ga najpogosteje pripravimo iz polnomastnega kravjega mleka. V diplomskem delu pa smo se osredotočili na tradicionalno gojenje kefirnih zrn v bio-mleku. S Taguchijevo metodo načrtovanja eksperimentov smo določili optimalne vrednosti procesnih parametrov (temperaturo, vrtilno frekvenco mešala, masno koncentracijo kefirnih zrn) in sestavo fermentacijskega medija, pri katerih smo dobili najvišjo dnevno prirast mase kefirnih zrn, tradicionalno gojenih v bio-mleku. Poleg tega smo z grafično in statistično analizo ANOVA določili relativne vplive procesnih parametrov glede na izbran optimizacijski kriterij. Z optimalnimi vrednostmi procesnih parametrov smo v nadaljevanju izvedli matematično modeliranje in bio-parameterizacijo rastne krivulje kefirnih zrn, gojenih v bio-mleku. Uporabili smo računalniški program SigmaPlot®10.0. V tretjem delu raziskav smo z ReactIRTMiC10 analiznim sistemom pri različnih sestavah fermentacijskega medija določili količino nastalega etanola v kefirju med 24 urno fermentacijo. Celotno serijo eksperimentov smo izvajali v avtomatiziranem laboratorijskem šaržnem reaktorju RC1 (reakcijski kalorimeter). Fermentacije so potekale 24 ur.
Keywords:kefirna zrna, optimiranje, procesni parametri, rastna krivulja, parameterizacija
Place of publishing:Maribor
Publisher:[K. Leskovar]
Year of publishing:2011
PID:20.500.12556/DKUM-19683 New window
UDC:66.01:637.1(043.2)
COBISS.SI-ID:15440406 New window
NUK URN:URN:SI:UM:DK:RXOLTPBK
Publication date in DKUM:24.08.2011
Views:2863
Downloads:262
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:OPTIMIZATION OF BIOPROCESS CONDITIONS AND PARAMETERIZATION OF GROWTH CURVE OF PROBIOTIC BIOPOPULATION PROPAGATION IN ECOLOGICAL MILK
Abstract:Environmental pollution is the main reason why in modern society an increased demand for bio-products with their health characteristics is detected. This food group among others includes also probiotics and prebiotics. As a probiotic with health effects kefir has been used for the centuries and it is usually prepared from the whole fat cows milk. In this work we focused on the traditional cultivation of kefir grains in bio-milk. With Taguchi method, we determined the optimal values of process parameters (temperature, rotational frequency of the stirrer, initial mass concentration of kefir grains) and the composition of fermentation medium with the highest daily kefir grains increase, inoculated in bio-milk. In addition, we determined the relative influences of process parameters on the selected optimization criterion with graphically and statistically analysis by ANOVA. Using optimal values of process parameters, we carried out a mathematical modelling and parameterisation of growth curve of kefir grains, inoculated in bio-milk, with the software SigmaPlot®10.0. In the last part of the experimental work, we used ReactIRTMiC10 analytical sistem for determination of the mass concentration of ethanol in kefir, during the 24-hours fermentation at different compositions of fermentation medium. All experiments were performed in a laboratory batch bioreactor RC1 (reaction calorimeter). The duration of fermentation was 24 hours for each experiment.
Keywords:kefir grains, optimization, process parameters, growth curve, parameterisation


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica