Growth and Biochemical Composition Characteristics of Arthrospira platensis Induced by Simultaneous Nitrogen Deficiency and Seawater-Supplemented Medium in an Outdoor Raceway Pond in Winter

Abstract

Arthrospira platensis, a well-known cyanobacterium, is widely applied not only in human and animal nutrition but also in cosmetics for its high amounts of active products. The biochemical composition plays a key role in the application performance of the Arthrospira biomass. The present study aimed to evaluate the growth and biochemical composition characteristics of A. platensis, cultured with a nitrogen-free and seawater-supplemented medium in an outdoor raceway pond in winter. The results showed that the biomass yield could achieve 222.42 g m−2, and the carbohydrate content increased by 247% at the end of the culture period (26 d), compared with that of the starter culture. The daily and annual areal productivities were 3.96 g m−2 d−1 and 14.44 ton ha−1 yr−1 for biomass and 2.88 g m−2 d−1 and 10.53 ton ha−1 yr−1 for carbohydrates, respectively. On the contrary, a profound reduction was observed in protein, lipid, and pigment contents. Glucose, the main monosaccharide in the A. platensis biomass, increased from 77.81% to 93.75% of total monosaccharides. Based on these results, large-scale production of carbohydrate-rich A. platensis biomass was achieved via a low-cost culture, involving simultaneous nitrogen deficiency and supplementary seawater in winter.

Impact of high Spirulina diet, extruded or supplemented with enzymes, on blood cells, systemic metabolites, and hepatic lipid and mineral profiles of broiler chickens

“…In this study, we observed that the inclusion of dietary A. platensis at a high-level increased glucose levels in birds fed the enzyme mixture relative to the reference diet. This finding is most probably associated with the carbohydrate-rich composition of A. platensis ( 44 , 45 ). Interestingly, while creatinine levels were enhanced by Spirulina extruded or combined with enzymes, a significant reduction in urea was observed in birds fed A. platensis , individual or extruded relative to the other treatments.…”

Comprehensive understanding of the mutant ‘giant’ Arthrospira platensis developed via ultraviolet mutagenesis

“…Arthrospira sp. contains an abundance of protein (60–70% of dry weight, DW), carbohydrates (15–25% of DW), lipids/PUFAs (3–9% of DW), and other nutrients, making it suitable as a functional food ( Wu et al., 2021 ; AlFadhly et al., 2022 ). In addition, Arthrospira spp.…”

“…In addition, Arthrospira spp. contain abundant phycocyanin, a blue photosynthetic pigment utilized in the food, cosmetic, and pharmaceutical industries ( Wu et al., 2021 ). These commercial advantages have led to the widespread cultivation of Arthrospira spp.…”

Effect of Cumulative Spirulina Intake on Broiler Meat Quality, Nutritional and Health-Related Attributes

“…Spirulina stands out due to its high protein content (up to 76% of dry matter, DM) [ 5 , 6 ], essential amino acids, carbohydrates (up to 22.6% DM) [ 5 ] and unique pigment composition, which includes phycocyanin, carotenoids and chlorophylls [ 7 , 8 , 9 ]. These components not only enhance the growth performance of broilers but also positively impact meat quality [ 5 ].…”