Abstract
Abstract Single cell oil is considered as a promising alternative to fish and vegetable oils. Due to the ability of oleaginous microorganisms to produce significant amounts of polyunsaturated fatty acids such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), single cell oil can be used for human and animal consumption. In this context, marine microorganisms of the class Labyrinthulomycetes are particularly highlighted in scientific literature. In order to clarify the possibilities for the use of microorganisms of the class Labyrinthulomycetes in large-scale single cell oil production, the first step is to gain awareness of the cultivation conditions required for these microorganisms. In addition, to reduce the cost of single cell oil production, it is necessary to identify potential agroindustrial waste products that are suitable for microbiological cultivation of Labyrinthulomycetes. This article examines the potential biotechnological applications of Labyrinthulomycetes in single cell oil production, the cultivation conditions, nutritional requirements, inhibitors and suitable waste products. In addition, an agroindustrial by-product availability analysis has been carried out. The article evaluates agroindustrial by-products based on their availability in Latvia, required pre-treatment, price, shelf life and efficiency.
Highlights
The world population growth as well as the rise in global awareness among consumers regarding healthy lifestyles and health benefits of omega-3 fatty acids contributes to the increasing consumption of fish products
In order to clarify the possibilities for the use of microorganisms of the class Labyrinthulomycetes in large-scale single cell oil production, the first step is to gain awareness of the cultivation conditions required for these microorganisms
The microorganisms of the Labyrinthulomycetes class are special with their ability to synthesize large amounts of long chain polyunsaturated fatty acids, for this reason, it is appropriate to use single cell oil obtained from Labyrinthulomycetes as a component of human food and animal feed
Summary
The world population growth as well as the rise in global awareness among consumers regarding healthy lifestyles and health benefits of omega-3 fatty acids contributes to the increasing consumption of fish products This factor impacts the expansion of the aquaculture industry, which is followed by the need for an economically viable, sustainable and renewable source of fish feed in order to obtain high quality and nutrient rich fish with large live weight. Scientists have proven that marine wild fish are able to accumulate high levels of polyunsaturated fatty acids by consuming marine organisms that have already synthesized these fatty acids, in other words DHA and EPA are biosynthesized mainly by phytoplankton, which are consumed by zooplankton and by fish [4] In this context, the single cell oil potential is highlighted in scientific literature. An overview about application of biodegradable residues in Latvia is given
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