Cited by 140Algal biology and biofuel productionFood Industry and Aquatic BiologyFood and Agricultural Sciences

Microalgae proteins as sustainable ingredients in novel foods: recent developments and challenges

Open access
Mosibo, Ornella Kongi, Ferrentino, Giovanna, Udenigwe, Chibuike C.·2024·Foods

Abstract

Microalgae are receiving increased attention in the food sector as a sustainable ingredient due to their high protein content and nutritional value. They contain up to 70% proteins with the presence of all 20 essential amino acids, thus fulfilling human dietary requirements. Microalgae are considered sustainable and environmentally friendly compared to traditional protein sources as they require less land and a reduced amount of water for cultivation. Although microalgae's potential in nutritional quality and functional properties is well documented, no reviews have considered an in-depth analysis of the pros and cons of their addition to foods. The present work discusses recent findings on microalgae with respect to their protein content and nutritional quality, placing a special focus on formulated food products containing microalgae proteins. Several challenges are encountered in the production, processing, and commercialization of foods containing microalgae proteins. Solutions presented in recent studies highlight the future research and directions necessary to provide solutions for consumer acceptability of microalgae proteins and derived products.

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Crossref · 10.3390/foods13050733

Cites

147 of 147 references verified0 citation errors · 0 not checkable

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  • Spirulina and Chlorella offer up to 70% protein by dry weight and a complete amino acid profile, alongside richness in essential fatty acids, vitamins, minerals, and antioxidant compounds.

    “species like Spirulina and Chlorella offering up to 70% protein by dry weight and a complete amino acid profile, alongside their richness in essential fatty acids (notably omega-3 and omega-6 PUFAs); a wide spectrum of vitamins (A, B complex, C, E, and K); minerals (e.g., iron, magnesium, and zinc); and antioxidant compounds such as carotenoids and phycobiliproteins [56,90,121,122,123].”

    From Microalgae Bioactives for Functional Food Innovation and Health Promotion (2025) · cites this paper as [121]

    Sections 2 and 3 report high protein content, essential amino acids, PUFAs, vitamins, minerals, and carotenoids in these microalgae. But Section 3 gives 50–70% protein for Spirulina and 50–60% for Chlorella, rather than up to 70% for each. The paper does not substantiate the sentence’s specific omega-3/omega-6, vitamin K, and zinc claims for these species; it identifies phycobiliproteins in Spirulina but does not describe them there as antioxidant compounds. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Microalgae can be grown on non-arable land and utilise non-potable or saline water, avoiding competition with traditional crops for critical resources.

    “They can be grown on non-arable land and utilise non-potable or saline water, thereby avoiding competition with traditional crops for critical resources [121,124].”

    From Microalgae Bioactives for Functional Food Innovation and Health Promotion (2025) · cites this paper as [121]

    Section 4 (Extraction Techniques for Microalgae Proteins) discusses cultivation using saline water and wastewater. Section 8 (Challenges and Future Prospects) says closed-loop cultivation uses less land and water than traditional protein production. The paper does not specify non-arable land or establish that microalgae cultivation avoids competition with traditional crops for resources. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Incorporating microalgae as an ingredient in formulations increases protein content, provides peptides and bioactive pigments, and improves water retention and texture properties in bakery and dairy matrices.

    “Incorporating microalgae as an ingredient in formulations increases protein content, provides peptides and bioactive pigments, and improves water retention and texture properties in bakery and dairy matrices (Verni et al., 2023; Mosibo et al., 2024).”

    From Microalgae biotechnology and its role in sustainable and healthy food design (2025) · cites this paper as Mosibo et al., 2024

  • Technological hurdles including efficient cultivation, cost-effective harvesting, and preservation of nutritional integrity during processing remain major technical challenges for large-scale commercialisation of microalgae.

    “Efficient cultivation, cost-effective harvesting, and the preservation of nutritional integrity during processing remain major technical challenges [104,121].”

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Cites

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Research works printed but not linked: 2

  1. [13]Becker E.W. Microalgae for Human and Animal Nutrition Handbook of Microalgal Culture John Wiley & Sons, Ltd. Oxford, UK 2013 461 503
  2. [28]Hoogenkamp H. Kumagai H. Wanasundara J.P.D. Rice Protein and Rice Protein Products Sustainable Protein Sources Elsevier Amsterdam, The Netherlands 2017 47 65

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Authors
Mosibo, O. K., Ferrentino, G., & Udenigwe, C. C.
Affiliations
  • University of Ottawa (CA)
  • Free University of Bozen-Bolzano (IT)
Corresponding author
Ferrentino, Giovanna
Venue
Foods
Publisher
MDPI AG
Published
2024-02-28
Volume
13
Issue
5
Pages
733
ISSN
2304-8158 (ISSN-L)
OpenAlex
W4392232297
Cited by
140
References
146
Citations by year
2026: 60 · 2025: 59 · 2024: 21
FWCI
2.92
Type
journal article
Language
en
Open access
Locations
  • Foods (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Open Research (University of Surrey) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Open Research (University of Surrey) (submittedVersion, cc-by)
Funders
Open Access Publishing Fund of the Free University of Bozen-Bolzano
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Food Industry and Aquatic Biology
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Food and Agricultural Sciences
Keywords
microalgal proteins, novel foods, sustainable food ingredients, essential amino acids, nutritional value, functional properties, microalgae cultivation, consumer acceptance, commercialization challenges

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