Bioproducts from microalgae biomass: Technology, sustainability, challenges and opportunities

Calijuri, Maria Lúcia; Silva, Thiago Abrantes; Magalhães, Iara Barbosa; Pereira, Alexia Saleme Aona de Paula; Marangon, Bianca Barros; Assis, Letícia Rodrigues de; Lorentz, Juliana Ferreira

doi:10.1016/j.chemosphere.2022.135508

Cited by 45 publications

(26 citation statements)

References 139 publications

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“…Proteins can be converted into biopolymers and, consequently, into bioplastics 53 . Likewise, pigments can be sources of carotenoids 54 …”

Section: Biotechnological Potential Of Photoautotrophic Microorganism...mentioning

confidence: 99%

“…Due to the variety of compounds these microorganisms can produce, the use of microalgae and cyanobacterial biomass fits into the biorefinery concept 57,58 . This concept is based on oil refineries, where oil is converted into various products with different added values, 55,56 with diverse applications, such as in the medical, food, nutraceutical, energy, pharmaceutical, and cosmetic industries, among others 54 . The biorefinery concept should also take into account environmental factors 58 .…”

Section: Biotechnological Potential Of Photoautotrophic Microorganism...mentioning

confidence: 99%

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Photoautotrophic microorganisms from mangroves: a review of the ecological role and bioproducts of commercial interest

Borrego

Melo

Gracioso

et al. 2023

Biofuels Bioprod Bioref

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Photoautotrophic microorganisms, such as microalgae and cyanobacteria, are known to perform an essential role in ecological functions. Besides, they are considered cell factories, producing various bioproducts of commercial interest. In mangroves, these microorganisms are primarily responsible for the ecosystem's high productivity. Moreover, the unique natural characteristics of mangroves, coupled with the intense pressure from anthropic activities that these ecosystems typically experience, make mangrove photoautotrophic microbiota biotechnologically attractive. In this work, the ecological role and biotechnological potential of photoautotrophic mangrove microorganisms worldwide were evaluated, highlighting, their ecosystem services and bioproducts with environmental and commercial appeal, as well as their strategic and technological application through patent analysis.

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“…Proteins can be converted into biopolymers and, consequently, into bioplastics 53 . Likewise, pigments can be sources of carotenoids 54 …”

Section: Biotechnological Potential Of Photoautotrophic Microorganism...mentioning

confidence: 99%

Section: Biotechnological Potential Of Photoautotrophic Microorganism...mentioning

confidence: 99%

Photoautotrophic microorganisms from mangroves: a review of the ecological role and bioproducts of commercial interest

Borrego

Melo

Gracioso

et al. 2023

Biofuels Bioprod Bioref

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“…A Large quantity of microalgae biomass is the foremost requirement for agriculture applications, especially as plant growth promoters and fertilizers. Despite enormous research on the microalgae biomass production, sustainably achieving high biomass productivity is still far from reality ( Calijuri et al., 2022 ). Commercial production of microalgae throughout the year have been possible only in few tropical and sub-tropical regions offering high light and conducive temperature without affecting conventional agriculture productivity ( Correa et al., 2019 ; Casanova et al., 2022 ; Rasheed et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

2023

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Sustainable agriculture practices involve the application of environment-friendly plant growth promoters and additives that do not negatively impact the health of the ecosystem. Stringent regulatory frameworks restricting the use of synthetic agrochemicals and the increase in demand for organically grown crops have paved the way for the development of novel bio-based plant growth promoters. In this context, microalgae biomass and derived agrochemicals offer novel sources of plant growth promotors that enhance crop productivity and impart disease resistance. These beneficial effects could be attributed to the presence of wide range of biomolecules such as soluble amino acid (AA), micronutrients, polysaccharides, phytohormones and other signaling molecules in microalgae biomass. In addition, their phototrophic nature, high photosynthetic efficiency, and wide environmental adaptability make them an attractive source of biostimulants, biofertilizers and biopesticides. The present review aims to describe the various plant growth promoting metabolites produced by microalgae and their effects on plant growth and productivity. Further, the effects elicited by microalgae biostimulants with respect to different modes of applications such as seed treatments, foliar spray and soil/root drenching is reviewed in detail. In addition, the ability of microalgae metabolites to impart tolerance against various abiotic and biotic stressors along with the mechanism of action is discussed in this paper. Although the use of microalgae based biofertilizers and biostimulants is gaining popularity, the high nutrient and water requirements and energy intensive downstream processes makes microalgae based technology commercially unsustainable. Addressing this challenge, we propose a circular economy model of microalgae mediated bioremediation coupled with biorefinery approaches of generating high value metabolites along with biofertilizer applications. We discuss and review new trends in enhancing the sustainability of microalgae biomass production by co-cultivation of algae with hydroponics and utilization of agriculture effluents.

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“…1 During microalgae cultivation for valuable product generation, microalgal cells generally experience multiple growth stages with dissimilar cultivating solutions (e.g., pH, salinity, nutrients) and conditions (e.g., light intensity and temperature). 2,3 Therefore, microalgal cells require to be harvested with appropriate strategies at each step without interfering with the product quality and quantity in the subsequent downstream steps and compromising the economic feasibility. 4 It is well-established that centrifugation, sedimentation, flotation, and coagulation/flocculation are widely used microalgal harvesting processes, with their unique pros and cons.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, microalgae have been recognized as sustainable and economical sources for producing value-added bioactive products, such as lipids, proteins, and antioxidants . During microalgae cultivation for valuable product generation, microalgal cells generally experience multiple growth stages with dissimilar cultivating solutions (e.g., pH, salinity, nutrients) and conditions (e.g., light intensity and temperature). , Therefore, microalgal cells require to be harvested with appropriate strategies at each step without interfering with the product quality and quantity in the subsequent downstream steps and compromising the economic feasibility …”

Section: Introductionmentioning

confidence: 99%

Reclamation of Nutrient Solution from Membrane-Based Microalgal Harvesting Processes for Cultivation of Vegetables in Hydroponic Systems

et al. 2023

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This study investigates membrane-based microalgal harvesting processes for simultaneously concentrating microalgal cells and reclaiming liquid nutrients for cultivating vegetables in hydroponic systems. During both gravity-driven (with microfiltration and ultrafiltration membranes) and crossflow (with microfiltration membranes) filtration, it was found that cake layer fouling was predominant, regardless of microalgal solution properties, membrane type, and filtration condition. Although the gravity-driven membrane process offered lower operation cost, the water productivity was limited due to its lower fluxes (<1 L/m 2 h). During crossflow microfiltration of the microalgal solutions, increasing periodic water (50 °C) flushing frequency helped in alleviating both irreversible fouling and cake fouling development, especially with an extending filtration cycle. Under the same water productivity condition, optimal periodic water flushing (50 °C, 5 min duration per 15 min filtration) displayed more effectiveness in cake fouling control compared to periodic ultrasonication (60 s per 15 min filtration). As the collected permeate contained phosphorus and nitrogen, it was utilized as a potential cultivation solution to grow lettuce and basil in hydroponic systems. Both plants cultivated with the permeate grew slower than those with the commercial fertilizer solution, possibly associated with the lack of some essential microelements and possible uptake of certain heavy metals. The targeted hazard quotient (THQ) values of all examined heavy metals in the edible part (stem and leaves) of basil and lettuce were 0.79 and 1.58, respectively, and comparable to those with the fertilizer solution (0.81 for basil and 1.35 for lettuce). This implies that the basil cultivated with the reclaimed microalgal nutrient solution did not pose a potential adverse health effect on human consumption.

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Bioproducts from microalgae biomass: Technology, sustainability, challenges and opportunities

Cited by 45 publications

References 139 publications

Photoautotrophic microorganisms from mangroves: a review of the ecological role and bioproducts of commercial interest

Photoautotrophic microorganisms from mangroves: a review of the ecological role and bioproducts of commercial interest

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

Reclamation of Nutrient Solution from Membrane-Based Microalgal Harvesting Processes for Cultivation of Vegetables in Hydroponic Systems

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