Nutritional Potential and Toxicological Evaluation of Tetraselmis sp. CTP4 Microalgal Biomass Produced in Industrial Photobioreactors
authors Pereira, H; Silva, J; Santos, T; Gangadhar, KN; Raposo, A; Nunes, C; Coimbra, MA; Gouveia, L; Barreira, L; Varela, J
nationality International
journal MOLECULES
author keywords microalgae; biochemical composition; Tetraselmis sp. CTP4; pigments; vitamins; antioxidants; toxicological evaluation
keywords FATTY-ACID-COMPOSITION; FUNCTIONAL FOOD; BIOCHEMICAL-COMPOSITION; MARINE MICROALGAE; VITAMIN CONTENT; SUECICA; INGREDIENTS; CAROTENOIDS; PROTEIN; GROWTH
abstract Commercial production of microalgal biomass for food and feed is a recent worldwide trend. Although it is common to publish nutritional data for microalgae grown at the lab-scale, data about industrial strains cultivated in an industrial setting are scarce in the literature. Thus, here we present the nutritional composition and a microbiological and toxicological evaluation of Tetraselmis sp. CTP4 biomass, cultivated in 100-m(3) photobioreactors at an industrial production facility (AlgaFarm). This microalga contained high amounts of protein (31.2 g/100 g), dietary fibres (24.6 g/100 g), digestible carbohydrates (18.1 g/100 g) and ashes (15.2 g/100 g), but low lipid content (7.04 g/100 g). The biomass displayed a balanced amount of essential amino acids, n-3 polyunsaturated fatty acids, and starch-like polysaccharides. Significant levels of chlorophyll (3.5 g/100 g), carotenoids (0.61 g/100 g), and vitamins (e.g., 79.2 mg ascorbic acid/100 g) were also found in the biomass. Conversely, pathogenic bacteria, heavy metals, cyanotoxins, mycotoxins, polycyclic aromatic hydrocarbons, and pesticides were absent. The biomass showed moderate antioxidant activity in several in vitro assays. Taken together, as the biomass produced has a balanced biochemical composition of macronutrients and (pro-)vitamins, lacking any toxic contaminants, these results suggest that this strain can be used for nutritional applications.
publisher MDPI
isbn 1420-3049
year published 2019
volume 24
issue 17
digital object identifier (doi) 10.3390/molecules24173192
web of science category Biochemistry & Molecular Biology; Chemistry, Multidisciplinary
subject category Biochemistry & Molecular Biology; Chemistry
unique article identifier WOS:000488613700172
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journal impact factor 3.267
5 year journal impact factor 3.589
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