Optimization and Analysis Methods of Pigment Production in Some Microalg Types Used in Aquaculture

One of the indicators that shows how much we give particular importance to R&D studies is that we willingly contribute in academic studies of universities. Our company has always been and will continue to be open to support requests from related faculties of our universities. We are proud to be able to contribute to the development of scientific methods and conducting researches, and to share our knowledge, with the awareness that our industry will progress in this way in national and global terms and reach the levels that can meet the increasing nutritional needs of the world population.

Below, you can find the post graduate project  which we contributed with our facilities’ resources that our company has:

EGE UNIVERSITY SCIENTIFIC
RESEARCH PROJECT REPORT

PROJECT NO: 09-SUF-022
(Post Graduate)

OPTIMIZATION AND ANALYSIS METHODS OF PIGMENT PRODUCTION IN SOME MICROALG TYPES USED IN AQUACULTURE

PROJECT SUPERVISOR
Assoc. Prof. Dr. Yaşar DURMAZ
RESEARCHER
Prof.Dr. Şevket GÖKPINAR
Researcher Assistant A. Çağlar ORUÇ
Gaye Ünal

Abstract

In this project, it was aimed to optimize culture conditions of Nannochloropsis oculata, Isochrysis galbana, Tetraselmis suecica, which are used in aquaculture operations in Aegean Region, depending on pigment rates. At the plankton culture laboratory at the Urla Facility of Ege University Faculty of Fisheries, cultures of species N. oculata, I. galbana and T. suecica were made in photobioreactors with optical path lengths of 3 cm, 8 cm, and 10 cm,
and in tubular photobioreactors.

In the experiment within the research on the light-dependent growth of I.galbana and T. suecica, the highest cell density was observed at the glass panel with the optical path length of 3 cm (13,81×106 cell ml -1 12,44×106 cell ml -1). As for the light-dependent growth of N. oculata, it was observed in the photobioreactor with the optical path length of 5 cm as232x10cell ml-1. The highest carotene values for T. suecica, N. oculata, and I.galbana were observed as 525,4 µg/g 1235,27 µg/g 7920,1 µg/g in the photobioreactor with the optical path length of 3 cm. As for the chlorophyll a values, increase in values was observed in parallel with increase in optical path length and the highest chlorophyll a value was found to be as 5851,9 µg/g, 9187,10 µg/g and 1769,5 µg/g, respectively. At the experiment in tubular photobioreactor, while the total carotene value was2334,00 µg/g, chlorophyll a value was found as 7335,45 µg/g.

Some of the factors affecting the biochemical structure of some microalgae species, which is intensively culture to be used in aquaculture farms as live feed, were revealed. The growth results in this research show that optical path length is among the parameters affecting the growth of N. oculata, I. galbana and T. suecica.

Keywords: Microalgae, pigment, aquaculture, bioreactor

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