Graduate theses
Current Record: 43 of 1665
|
Title |
Μελέτη της επίδρασης της πηγής άνθρακα στην ανάπτυξη, την φωτοσυνθετική δραστηριότητα και το βιοχημικό περιεχόμενο ενός απομονωμένου στελέχους Chlorella sp. |
Alternative Title |
Study of the effect of carbon substrate on the growth, photosynthetic activity and biochemical content of an isolated Chlorella sp strain |
Author
|
Χρονάκης, Γεώργιος
|
Thesis advisor
|
Γανωτάκης, Δημήτριος
|
Abstract |
The subject of this thesis is the study of the effect of different carbon sources (glucose,
galactose, fructose, maltose, mannitol, lactose, sucrose, and sorbitol) on the growth, photosynthetic activity, and biochemical content of a photosynthetic microalga of the genus Chlorella,
isolated from the eutrophic river Giofyros located in Heraklion, Crete.
In the first part of this study, it was found that both the type and quantity of organic
substrate as well as the growth mode have a direct impact on the growth and photosynthetic
ability of the microalgae. Specifically, the Chlorella strain exhibited high cellular biomass when
grown under mixotrophic conditions and in cultures with glucose, maltose, and sucrose as organic carbon sources within concentrations ranging from 150 to 200 mM. Conversely, photosynthetic activity was significantly higher in cultures where autotrophic conditions prevailed or
where the organic carbon source was present at low concentrations (50-100 mM).
In the second part, the above samples were used to analyze the biochemical composition of Chlorella cells. The microalga showed higher content of sugars and chlorophylls under
autotrophic conditions, indicating remarkable photosynthetic activity. On the other hand, cultures grown under mixotrophic conditions demonstrated that the organic substrate affects the
biochemical composition of the cells, causing a decrease in sugars and an increase in lipids.
The results of this study can be used as a reference for improving the cultivation techniques of the microorganism according to its intended use (biofuel, dietary supplement, and
means for bioremediation).
|
Language |
Greek |
Subject |
Biomass |
|
Carbon source |
|
Microalgae |
|
Photosynthetic capacity |
|
Βιομάζα |
|
Μικροφύκη |
|
Φωτοσυνθετική ικανότητα |
Issue date |
2024-03-21 |
Collection
|
School/Department--School of Sciences and Engineering--Department of Chemistry--Graduate theses
|
|
Type of Work--Graduate theses
|
Permanent Link |
https://elocus.lib.uoc.gr//dlib/3/f/7/metadata-dlib-1709537397-698447-4325.tkl
|
Views |
294 |