Microalgae-Based Carotenoids Production

Rajesh, K.; Rohit, M.V.; Mohan, S. Venkata

doi:10.1016/b978-0-444-63784-0.00007-2

Cited by 20 publications

(16 citation statements)

References 71 publications

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“…21 It has a relatively high lipids content in the range of 35% 30 ; also, under stress conditions, it can accumulate significant amounts of valuable substances, such as vitamins, proteins, and pigments, 31 including β-carotene. 32 The stress factor, here, is the homeostasis disruption by salinity, leading to cell metabolism alterations during homeostasis acclimation and restoration. 33 Therefore, the commercial-scale cultivation of D. salina is an option to reduce the contamination risk because highly selective cultivations can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Improving the economic feasibility of biodiesel production from microalgal biomass via high‐value products coproduction

et al. 2020

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Summary Microalgal biodiesel has emerged as a promising fuel source, but has still not been adopted commercially. One of the several inherent challenges is its high production cost, which mandates the need to develop an integrated process to produce other valuable coproducts economically. This article combines life cycle assessment and preliminary life cycle cost assessment of a proposed biorefinery, in which a high value product, β‐carotene, is coproduced from microalgae with biodiesel. The GaBi 6 environmental management software was employed to investigate the environmental impact associated with the production life cycle. The mass flow rates and the energy consumed in all stages of biodiesel and β‐carotene coproduction for the functional unit of 1 kg of biodiesel were assessed. When the coproduction of β‐carotene was not taken into consideration, the total energy input for a functional unit of 1.0 kg biodiesel/m2/y and the net energy ratio, that is, energy returned on energy invested were estimated to be 128.1 GWh/y and 0.27, respectively. The life cycle cost analysis showed that although the total production cost associated with coproduction of β‐carotene from Dunaliella salina was higher than that of the sole production of biodiesel, it generates a hiked revenue of up to $37 million/y. Over the system lifetime of 10 years, the sole production of biodiesel showed a loss of US$345 million per functional unit, whereas the coproduction of β‐carotene achieved a net profit of US$120.7 million per functional unit. This work clearly showed that the coproduction of β‐carotene with biodiesel from D. salina overcomes the cost‐ineffectiveness resulting from the production of biodiesel alone.

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Section: Introductionmentioning

confidence: 99%

Improving the economic feasibility of biodiesel production from microalgal biomass via high‐value products coproduction

et al. 2020

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“…In the IBWMC the limit to the plankton size range of 10-50 µm is <10 viable organisms per ml. This fraction contains practically all HABs, since microalgae cells are typically small, in the range of micrometers to tens of micrometers [8].…”

Section: Introductionmentioning

confidence: 99%

Nuisance Algae in Ballast Water Facing International Conventions. Insights from DNA Metabarcoding in Ships Arriving in Bay of Biscay

Ardura

Borrell

Fernández

et al. 2020

Water

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Ballast water is one of the main vectors of transport of nuisance species among marine ports. Neither treatment nor interchange completely reduces the risk of ballast water containing DNA from harmful species, being a signal of potential threat. However, although there are some efficient treatments, they are not available on all ships and there might be some technological/economical constrains for their active and routine usage. Understanding what routes lead to a higher risk of contamination is important for designing targeted surveillance. We analysed ballast water from seven ships arriving in Gijon port (south Bay of Biscay, Spain). DNA metabarcoding was employed for identification of exotic species and harmful algae. One ship carried DNA of 20 risk species in the ballast water. Three ships contained DNA of only one risk species, and three ships had none. Seventy two algae species were found, 22.2% are exotic to the Bay of Biscay and 11.1% are catalogued as harmful. The results demonstrated the importance of continuous surveillance of ballast water.

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“…Carotenoids are hydrophobic, light-harvesting accessory pigments with the C 40 backbone structure of isoprene units, which act as antioxidants and play a major role in quenching free radicals and inhibiting oxidative injury to cells, tissues, and membranes [ 29 ]. Approximately 400 carotenoids were identified in different living beings, and those that are widely commercialized are β-carotene, astaxanthin, lutein, fucoxanthin, zeaxanthin, antheraxantin, violaxanthin, neoxanthin, loroxanthin, diadinoxanthin, diatoxanthin, and siphonein [ 30 ].…”

Section: Bioactive Compoundsmentioning

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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Microalgae-Based Carotenoids Production

Cited by 20 publications

References 71 publications

Improving the economic feasibility of biodiesel production from microalgal biomass via high‐value products coproduction

Improving the economic feasibility of biodiesel production from microalgal biomass via high‐value products coproduction

Nuisance Algae in Ballast Water Facing International Conventions. Insights from DNA Metabarcoding in Ships Arriving in Bay of Biscay

Microalgal Cell Biofactory—Therapeutic, Nutraceutical and Functional Food Applications

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