Microalgae for biotechnological applications: Cultivation, harvesting and biomass processing

Morais, Wilson G.; Gorgich, Malihe; Corrêa, Priscila S.; Martins, António A.; Mata, Teresa M.; Caetano, Nídia S.

doi:10.1016/j.aquaculture.2020.735562

Cited by 125 publications

(71 citation statements)

References 187 publications

(254 reference statements)

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“…These metabolites are produced from microalgae via mevalonate/ non-mevalonic, shikimate, and polyketide pathways. Proteins, lipids, and carbohydrates synthesized in the growth phase act as energy reservoirs during nutrient deficient conditions [20,21]. Each microalgal species has diverse characteristics and produces various products influenced by both biotic and abiotic stress.…”

Section: Potential Of Microalgaementioning

confidence: 99%

Microalgal Cell Biofactory—Therapeutic, Nutraceutical and Functional Food Applications

Kiran

Mohan

2021

Plants

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Microalgae are multifaceted photosynthetic microorganisms with emerging business potential. They are present ubiquitously in terrestrial and aquatic environments with rich species diversity and are capable of producing significant biomass. Traditionally, microalgal biomass is being used as food and feed in many countries around the globe. The production of microalgal-based bioactive compounds at an industrial scale through biotechnological interventions is gaining interest more recently. The present review provides a detailed overview of the key algal metabolites, which plays a crucial role in nutraceutical, functional foods, and animal/aquaculture feed industries. Bioactive compounds of microalgae known to exhibit antioxidant, antimicrobial, antitumor, and immunomodulatory effects were comprehensively reviewed. The potential microalgal species and biological extracts against human pathogens were also discussed. Further, current technologies involved in upstream and downstream bioprocessing including cultivation, harvesting, and cell disruption were documented. Establishing microalgae as an alternative supplement would complement the sustainable and environmental requirements in the framework of human health and well-being.

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Section: Potential Of Microalgaementioning

confidence: 99%

Microalgal Cell Biofactory—Therapeutic, Nutraceutical and Functional Food Applications

Kiran

Mohan

2021

Plants

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“…Spirulina represents 60% of all biomass produced on a large scale [35]. This species can be easily grown in tropical regions and is well adapted to extreme environments, being relatively less susceptible to contamination than other microalgae, making it the most favorable choice for large-scale production [36].…”

Section: Application Of Microalgaementioning

confidence: 99%

Microalgae Growth under Mixotrophic Condition Using Agro-Industrial Waste: A Review

Pereira¹,

Rangel²,

Chagas³

et al. 2021

Biotechnological Applications of Biomass

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Microalgae has a great potential to produce biofuels and bioproduct but the cost is still too high mainly due to the biomass production. Mixotrophic cultivation has been pointed as microalgae cultivation mode for biomass/bioenergy production with lower cost and able to make remediation of organic waste. The proposals of this work was to make a review of microalgae growth under mixotrophic condition using agro-industrial waste. Agro-industrial by-products and wastes are of great interest as cultivation medium for microorganisms because of their low cost, renewable nature, and abundance. However biotechnological technologies are necessary to develop the production of microalgae on a large scale.

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“…Chlorella vulgaris, an essential green eukaryotic photosynthetic microorganism capable of rapid adaptation to new environments, with a structure similar to plants in an aquatic system, is a unicellular organism [13] with a spherical shape 2.5-10 µm in diameter [13,14], with a lipid production capacity range 14-56 dw% (dw-dry weight), protein content 10-58 dw%, and carbohydrate content 10-17 dw% [15]. Chlorella vulgaris reproduces asexually most commonly by auto-sporulation (i.e., four daughter cells with their own and dependent cell wall) [16].…”

Section: Chlorella Vulgaris-culture Monitoring and Growth Parametersmentioning

confidence: 99%

Aquatic Toxicity of Photocatalyst Nanoparticles to Green Microalgae Chlorella vulgaris

Adochite

Andronic

2020

Water

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In the last years, nanoparticles such as TiO2, ZnO, NiO, CuO and Fe2O3 were mainly used in wastewater applications. In addition to the positive aspects concerning using nanoparticles in the advanced oxidation process of wastewater containing pollutants, the impact of these nanoparticles on the environment must also be investigated. The toxicity of nanoparticles is generally investigated by the nanomaterials’ effect on green algae, especially on Chlorella vulgaris. In this review, several aspects are reviewed: the Chlorella vulgaris culture monitoring and growth parameters, the effect of different nanoparticles on Chlorella vulgaris, the toxicity of photocatalyst nanoparticles, and the mechanism of photocatalyst during oxidative stress on the photosynthetic mechanism of Chlorella vulgaris. The Bold basal medium (BBM) is generally recognized as an excellent standard cultivation medium for Chlorella vulgaris in the known environmental conditions such as temperature in the range 20–30 °C and light intensity of around 150 μE·m2·s−1 under a 16/8 h light/dark cycle. The nanoparticles synthesis methods influence the particle size, morphology, density, surface area to generate growth inhibition and further algal deaths at the nanoparticle-dependent concentration. Moreover, the results revealed that nanoparticles caused a more potent inhibitory effect on microalgal growth and severely disrupted algal cells’ membranes.

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Microalgae for biotechnological applications: Cultivation, harvesting and biomass processing

Cited by 125 publications

References 187 publications

Microalgal Cell Biofactory—Therapeutic, Nutraceutical and Functional Food Applications

Microalgal Cell Biofactory—Therapeutic, Nutraceutical and Functional Food Applications

Microalgae Growth under Mixotrophic Condition Using Agro-Industrial Waste: A Review

Aquatic Toxicity of Photocatalyst Nanoparticles to Green Microalgae Chlorella vulgaris

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