Life cycle assessment of fish feed for oil alternatives - environmental impact of microalgae, rapeseed and fish oil
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Kuupäev
2023
Kättesaadav alates
Autorid
Zlaugotne, B.
Diaz Sanchez, F.
Pubule, J.
Blumberga, D.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Fish is an inexpensive source of high-quality protein as well as valuable micronutrients.
Increasing the volume of fish and producing more fish feed is necessary to ensure the necessary
consumption. One of the main components of fish feed is oil, the most crucial lipid source in fish
feed. Fish oil is easily digestible and contains essential fatty acids, but replacing fish oil with
alternative oil might make the fish feed more sustainable. Vegetable oils can replace fish oil due
to reduced costs due to continued growth in production volumes, high availability and better
economic value. Soy, linseed, rapeseed, sunflower, palm and olive oils are often used in fish feed.
Also, microalgae oil is rich in essential fatty acids and a long-lasting alternative to fish oil.
Important is not only the environmental impact of oil alternatives but also how these alternatives
maintain or even improve the overall composition and quality of fish feed and products. An LCA
assessment was performed to determine the environmental impact of microalgae, rapeseed oil,
and fish oil. Where LCA system boundaries are “cradle to gate” and a functional unit of 1 kg of
oil. LCA inventory is data from a literature review and SimaPro Ecoinvent database. The results
obtained from LCA are based on PEFCR impact assessment categories. The LCA results show
that the single score value for microalgae oil is 1.00E+00 mPt, for rapeseed oil 3.55E-01 mPt and
fish oil 1.61E-01 mPt. It should be noted that the comparison presented reflects a generic
comparison of alternatives, as the input data is derived from the literature analysis and the
Ecoinvent v3.8 database.
Kirjeldus
Received: January 31st, 2023 ; Accepted: May 7th, 2023 ; August 17th, 2023 ; Correspondence: beate.zlaugotne@rtu.lv
Märksõnad
fish feed, fish oil, LCA, microalgae oil, PEFCR, rapeseed oil, articles