Amino acid composition of algal products and its contribution to RDI

Mišurcová, Ladislava; Buňka, František; Ambrožová, Jarmila Vávra; Machů, Ludmila; Samek, Dušan; Kráčmar, Stanislav

doi:10.1016/j.foodchem.2013.11.040

Cited by 114 publications

(81 citation statements)

References 26 publications

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“…Furthermore, there were no significant differences in protein amount and amino acid composition of the biomass produced between the treatments. The total amount of protein and the amino acid composition observed agree well with previous findings [2, 20] and confirm the potential of Spirulina as a source of high-quality protein. The total amount of lipids was slightly, although not significantly, higher in the biomass produced in the effluent-based medium.…”

Section: Discussionsupporting

confidence: 90%

Use of the effluent from biogas production for cultivation of Spirulina

Hultberg

Lind

Birgersson

et al. 2016

Bioprocess Biosyst Eng

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The effluent from the biogas process was tested as a nutrient source during cultivation of the protein-rich and edible microalgae Spirulina (Arthrospira platensis) and compared with conventional Spirulina medium. Equal biomass production was observed until late exponential phase and no significant differences could be observed between the treatments in protein amount, amino acid composition, and total lipid concentration. The concentration of the pigment phycocyanin differed significantly between Spirulina medium and the effluent-based medium (63.3 ± 11.7 and 86.2 ± 1.9 mg g−1, respectively). Slightly higher concentrations of saturated fatty acids, mainly palmitic acid, were observed in the biomass produced in Spirulina medium than in that produced in the effluent-based medium. In the biomass produced in the effluent-based medium, the cadmium concentration was 0.07 ± 0.05 mg kg−1 of dry weight, whereas it was below the detection limit in the biomass produced in Spirulina medium. There is a need to identify new food and feed resources and a possible future scenario is to integrate Spirulina production into the biogas plant for protein production as it contains more than 60% of protein on dry weight basis. In that scenario, it is important to control heavy metal concentrations in the biogas slurry fed to Spirulina.

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Section: Discussionsupporting

confidence: 90%

Use of the effluent from biogas production for cultivation of Spirulina

Hultberg

Lind

Birgersson

et al. 2016

Bioprocess Biosyst Eng

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“…Nevertheless, tryptophan and lysine are often limiting amino acids in most algae species [35,36,37]. Furthermore, leucine and isoleucine are commonly found in low concentrations in red species of algae, while methionine, cysteine, and lysine are often limiting in brown algae species [35,38]. Cysteine typically occurs at low levels in many seaweed species, and is often not detectable [39].…”

Section: Protein Qualitymentioning

confidence: 99%

Algal Proteins: Extraction, Application, and Challenges Concerning Production

Bleakley

Hayes

2017

Foods

689

418

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Population growth combined with increasingly limited resources of arable land and fresh water has resulted in a need for alternative protein sources. Macroalgae (seaweed) and microalgae are examples of under-exploited “crops”. Algae do not compete with traditional food crops for space and resources. This review details the characteristics of commonly consumed algae, as well as their potential for use as a protein source based on their protein quality, amino acid composition, and digestibility. Protein extraction methods applied to algae to date, including enzymatic hydrolysis, physical processes, and chemical extraction and novel methods such as ultrasound-assisted extraction, pulsed electric field, and microwave-assisted extraction are discussed. Moreover, existing protein enrichment methods used in the dairy industry and the potential of these methods to generate high value ingredients from algae, such as bioactive peptides and functional ingredients are discussed. Applications of algae in human nutrition, animal feed, and aquaculture are examined.

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“…An HPLC system was used to determine the amino acid profiles as described by Misurcova et al (2014) with some modification. Briefly, protein samples (50 mg) were hydrolyzed with 2 mL of 6 N HCl (containing 0.1% phenol) in an oven at 110°C in a sealed glass tubes for 24 h. For the determination of sulfur amino acids (Met and Cys), samples were submitted to 16 h oxidation with a mixture of 30% (v/v) hydrogen peroxide and 98% (v/v) formic acid (1:9 v/v) and were subsequently hydrolyzed in the way mentioned above.…”

Section: Amino Acid Analysismentioning

confidence: 99%

Physicochemical characterization, antioxidant and anticancer activities of proteins from four legume species

et al. 2016

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The physicochemical, functional, antioxidant and anticancer properties of protein isolates from the seeds of Soybean (SP), Black soybean (BSP), Adzuki bean (ABP), and Mung bean (MBP) were comparatively characterized. The difference was found in the protein composition and physicochemical properties of the four types of legume proteins, which affected the functional properties and bioactivities. BSP and SP had six predominant proteins with a molecular weight (M W ) range of 20-95 kDa, whereas ABP and MBP showed the most intense bands of 48 kDa. ABP with higher essential amino acids content and the highest solubility exhibited the highest antioxidant activities among the four types of proteins. While BSP with higher content of acidic amino acids, low content of the hydrophobic amino acids and higher WHC, may have potential nutraceutical uses.

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Amino acid composition of algal products and its contribution to RDI

Cited by 114 publications

References 26 publications

Use of the effluent from biogas production for cultivation of Spirulina

Use of the effluent from biogas production for cultivation of Spirulina

Algal Proteins: Extraction, Application, and Challenges Concerning Production

Physicochemical characterization, antioxidant and anticancer activities of proteins from four legume species

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