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Choudhary P, G VS, Khade M, Savant S, Musale A, G RKK, Chelliah MS, Dasgupta S. Empowering blue economy: From underrated ecosystem to sustainable industry. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 291:112697. [PMID: 33934021 DOI: 10.1016/j.jenvman.2021.112697] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
With increasing demand for resources to achieve global food-water-energy nexus and rapid decline in land-based sources, oceans represent both solution and boost to sustainable environment and economy. In addition to fundamental part of earth's ecosystem for uncatalogued diversity of life, oceans are undervalued economy powerhouse with gross marine product value. With sustainable management of existing assets including shipping, transportation, manufacturing, fisheries, tourism and exploration of new business like marine biotechnology and renewable energy, the ocean or blue economy has potential to fulfill sustainable development goals (SDG). In spite of recognition of blue economy as a new economic frontier, investments by existing industries and emergence of new ones are limited and less known, hence require more in depth attention and scientific understanding. In the present study, authors present a systematic comparative assessment of blue economy sectors with distinct challenges and strategies to be further explored and implemented for industrial deployment. The conceptualization of integrated routes of bio(economy) by the current study can act as gateway for key stakeholders, i.e. governance, bluepreneurs (scientists and industries) to prioritize technologies for sustainable applications of marine resources.
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Affiliation(s)
- Poonam Choudhary
- RIL Biofuel R&D Site, Reliance Industries Limited, Motikhavadi, Jamnagar, India.
| | - Venkata Subhash G
- Reliance Technology Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
| | - Monika Khade
- Reliance Technology Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
| | - Sandip Savant
- RIL Biofuel R&D Site, Reliance Industries Limited, Motikhavadi, Jamnagar, India.
| | - Amar Musale
- Reliance Technology Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
| | - Raja Krishna Kumar G
- Reliance Technology Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
| | | | - Santanu Dasgupta
- Reliance Technology Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
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Saadaoui I, Rasheed R, Aguilar A, Cherif M, Al Jabri H, Sayadi S, Manning SR. Microalgal-based feed: promising alternative feedstocks for livestock and poultry production. J Anim Sci Biotechnol 2021; 12:76. [PMID: 34134776 PMCID: PMC8359609 DOI: 10.1186/s40104-021-00593-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 04/06/2021] [Indexed: 11/18/2022] Open
Abstract
There is an immediate need to identify alternative sources of high-nutrient feedstocks for domestic livestock production and poultry, not only to support growing food demands but also to produce microalgae-source functional foods with multiple health benefits. Various species of microalgae and cyanobacteria are used to supplement existing feedstocks. In this review, microalgae have been defined as a potential feedstock for domestic animals due to their abundance of proteins, carbohydrates, lipids, minerals, vitamins, and other high-value products. Additionally, the positive physiological effects on products of animals fed with microalgal biomass have been compiled and recommendations are listed to enhance the assimilation of biomolecules in ruminant and nonruminant animals, which possess differing digestive systems. Furthermore, the role of microalgae as prebiotics is also discussed. With regards to large scale cultivation of microalgae for use as feed, many economic trade-offs must be considered such as the selection of strains with desired nutritional properties, cultivation systems, and steps for downstream processing. These factors are highlighted with further investigations needed to reduce the overall costs of cultivation. Finally, this review outlines the pros and cons of utilizing microalgae as a supplementary feedstock for poultry and cattle, existing cultivation strategies, and the economics of large-scale microalgal production.
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Affiliation(s)
- Imen Saadaoui
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O.Box.2713, Doha, Qatar.
| | - Rihab Rasheed
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O.Box.2713, Doha, Qatar
| | - Ana Aguilar
- Department of Molecular Biosciences, UTEX Culture Collection of Algae, University of Texas at Austin, Austin, TX, 78712, USA
| | - Maroua Cherif
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O.Box.2713, Doha, Qatar
| | - Hareb Al Jabri
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O.Box.2713, Doha, Qatar
| | - Sami Sayadi
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O.Box.2713, Doha, Qatar
| | - Schonna R Manning
- Department of Molecular Biosciences, UTEX Culture Collection of Algae, University of Texas at Austin, Austin, TX, 78712, USA
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Abstract
In recent years, there has been considerable interest in using microalgal lipids in the food, chemical, pharmaceutical, and cosmetic industries. Several microalgal species can accumulate appreciable lipid quantities and therefore are characterized as oleaginous. In cosmetic formulations, lipids and their derivatives are one of the main ingredients. Different lipid classes are great moisturizing, emollient, and softening agents, work as surfactants and emulsifiers, give consistence to products, are color and fragrance carriers, act as preservatives to maintain products integrity, and can be part of the molecules delivery system. In the past, chemicals have been widely used but today’s market and customers’ demands are oriented towards natural products. Microalgae are an extraordinary source of lipids and other many bioactive molecules. Scientists’ attention to microalgae cultivation for their industrial application is increasing. For the high costs associated, commercialization of microalgae and their products is still not very widespread. The possibility to use biomass for various industrial purposes could make microalgae more economically competitive.
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54
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Phytosterol-rich compressed fluids extracts from Phormidium autumnale cyanobacteria with neuroprotective potential. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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55
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Ciani M, Lippolis A, Fava F, Rodolfi L, Niccolai A, Tredici MR. Microbes: Food for the Future. Foods 2021; 10:foods10050971. [PMID: 33925123 PMCID: PMC8145633 DOI: 10.3390/foods10050971] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/24/2021] [Accepted: 04/25/2021] [Indexed: 02/07/2023] Open
Abstract
Current projections estimate that in 2050 about 10 billion people will inhabit the earth and food production will need to increase by more than 60%. Food security will therefore represent a matter of global concern not easily tackled with current agriculture practices and curbed by the increasing scarcity of natural resources and climate change. Disrupting technologies are urgently needed to improve the efficiency of the food production system and to reduce the negative externalities of agriculture (soil erosion, desertification, air pollution, water and soil contamination, biodiversity loss, etc.). Among the most innovative technologies, the production of microbial protein (MP) in controlled and intensive systems called “bioreactors” is receiving increasing attention from research and industry. MP has low arable land requirements, does not directly compete with crop-based food commodities, and uses fertilizers with an almost 100% efficiency. This review considers the potential and limitations of four MP sources currently tested at pilot level or sold as food or feed ingredients: hydrogen oxidizing bacteria (HOB), methanotrophs, fungi, and microalgae (cyanobacteria). The environmental impacts (energy, land, water use, and GHG emissions) of these MP sources are compared with those of plant, animal, insect, and cultured meat-based proteins. Prices are reported to address whether MP may compete with traditional protein sources. Microalgae cultivation under artificial light is discussed as a strategy to ensure independence from weather conditions, continuous operation over the year, as well as high-quality biomass. The main challenges to the spreading of MP use are discussed.
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56
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Kiran BR, Venkata Mohan S. Microalgal Cell Biofactory-Therapeutic, Nutraceutical and Functional Food Applications. PLANTS (BASEL, SWITZERLAND) 2021; 10:836. [PMID: 33919450 PMCID: PMC8143517 DOI: 10.3390/plants10050836] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 12/11/2022]
Abstract
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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Affiliation(s)
| | - S. Venkata Mohan
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering (DEE), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India;
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do Nascimento TC, Pinheiro PN, Fernandes AS, Murador DC, Neves BV, de Menezes CR, de Rosso VV, Jacob-Lopes E, Zepka LQ. Bioaccessibility and intestinal uptake of carotenoids from microalgae Scenedesmus obliquus. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110780] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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58
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Tavakoli S, Regenstein JM, Daneshvar E, Bhatnagar A, Luo Y, Hong H. Recent advances in the application of microalgae and its derivatives for preservation, quality improvement, and shelf-life extension of seafood. Crit Rev Food Sci Nutr 2021; 62:6055-6068. [PMID: 33706613 DOI: 10.1080/10408398.2021.1895065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Seafood is a highly perishable food product due to microbiological, chemical, and enzymatic reactions, which are the principal causes of their rapid quality deterioration. Therefore, ever-increasing consumers' demand for high-quality seafood along with a negative perception of synthetic preservatives creates opportunities for natural preservatives such as microalgae extracts. They are potential alternatives to reduce microbial growth, increase oxidative stability, and protect the sensorial properties of seafood. Research has shown that the inclusion of microalgae extracts into the aquatic animal's diet could enhance their meat quality and increase production. This review focuses on the direct application of various microalgae extracts as seafood preservative, and their functional properties in seafood, such as antioxidant and antimicrobial activities. Besides, the potential nutritional application of microalgae extracts as an alternative in aqua-feed and their impact on seafood quality (indirect application) are also presented. The safety aspects and regulatory issues of products from microalgae are highlighted.
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Affiliation(s)
- Samad Tavakoli
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Joe M Regenstein
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Ehsan Daneshvar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Mikkeli, Finland
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Mikkeli, Finland
| | - Yongkang Luo
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Hui Hong
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu, China
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59
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Jareonsin S, Pumas C. Advantages of Heterotrophic Microalgae as a Host for Phytochemicals Production. Front Bioeng Biotechnol 2021; 9:628597. [PMID: 33644020 PMCID: PMC7907617 DOI: 10.3389/fbioe.2021.628597] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/19/2021] [Indexed: 12/17/2022] Open
Abstract
Currently, most commercial recombinant technologies rely on host systems. However, each host has their own benefits and drawbacks, depending on the target products. Prokaryote host is lack of post-transcriptional and post-translational mechanisms, making them unsuitable for eukaryotic productions like phytochemicals. Even there are other eukaryote hosts (e.g., transgenic animals, mammalian cell, and transgenic plants), but those hosts have some limitations, such as low yield, high cost, time consuming, virus contamination, and so on. Thus, flexible platforms and efficient methods that can produced phytochemicals are required. The use of heterotrophic microalgae as a host system is interesting because it possibly overcome those obstacles. This paper presents a comprehensive review of heterotrophic microalgal expression host including advantages of heterotrophic microalgae as a host, genetic engineering of microalgae, genetic transformation of microalgae, microalgal engineering for phytochemicals production, challenges of microalgal hosts, key market trends, and future view. Finally, this review might be a directions of the alternative microalgae host for high-value phytochemicals production in the next few years.
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Affiliation(s)
- Surumpa Jareonsin
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Chayakorn Pumas
- Research Center in Bioresources for Agriculture, Industry and Medicine, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
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60
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Vieira MV, Pastrana LM, Fuciños P. Microalgae Encapsulation Systems for Food, Pharmaceutical and Cosmetics Applications. Mar Drugs 2020; 18:E644. [PMID: 33333921 PMCID: PMC7765346 DOI: 10.3390/md18120644] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 12/13/2022] Open
Abstract
Microalgae are microorganisms with a singular biochemical composition, including several biologically active compounds with proven pharmacological activities, such as anticancer, antioxidant and anti-inflammatory activities, among others. These properties make microalgae an interesting natural resource to be used as a functional ingredient, as well as in the prevention and treatment of diseases, or cosmetic formulations. Nevertheless, natural bioactives often possess inherent chemical instability and/or poor solubility, which are usually associated with low bioavailability. As such, their industrial potential as a health-promoting substance might be severely compromised. In this context, encapsulation systems are considered as a promising and emerging strategy to overcome these shortcomings due to the presence of a surrounding protective layer. Diverse systems have already been reported in the literature for natural bioactives, where some of them have been successfully applied to microalgae compounds. Therefore, this review focuses on exploring encapsulation systems for microalgae biomass, their extracts, or purified bioactives for food, pharmaceutical, and cosmetic purposes. Moreover, this work also covers the most common encapsulation techniques and types of coating materials used, along with the main findings regarding the beneficial effects of these systems.
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Affiliation(s)
| | | | - Pablo Fuciños
- Food Processing and Nutrition Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal; (M.V.V.); (L.M.P.)
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61
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Paz A, Karnaouri A, Templis CC, Papayannakos N, Topakas E. Valorization of exhausted olive pomace for the production of omega-3 fatty acids by Crypthecodinium cohnii. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 118:435-444. [PMID: 32971378 DOI: 10.1016/j.wasman.2020.09.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
Exhausted olive pomace (EOP) represents a potential candidate side stream to be utilized in biotechnological processes. EOP composition includes significant amounts of extractives and pectin, which are both usually discarded and are not utilized in the valorization process of the raw material. In this study, organosolv technology was optimized to remove the extractives and pectin using a Central Composite Rotatable Design. Optimal pretreatment conditions were predicted to be at 97.95 °C for 23.18 min, upon addition of 50% (v/v) EtOH in H2O, with 0.5% (w/v) of H2SO4 as catalyst. The composition analysis of liquid fraction revealed a high content of total sugars (17.58 g/L), galacturonic acid (7.05 g/L) and phenolic compounds (2.97 g/L). The liquid fraction was utilized as a carbon source by the heterotrophic marine microalgae Crypthecodinium cohnii, where it was shown to promote lipid accumulation up to 38.5% wt. of cell biomass, even without any additional detoxification step. This study is the first report that shows the use of galacturonic acid as carbon source for the growth of C. cohnii, while underpinning the use of EOP as a promising substrate for the development of zero-waste bioprocesses.
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Affiliation(s)
- Alicia Paz
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece; Industrial Biotechnology and Environmental Engineering Group "BiotecnIA", Chemical Engineering Department, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Galicia, Spain
| | - Anthi Karnaouri
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece
| | - Chrysovalantis C Templis
- Chemical Process Engineering Laboratory, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece
| | - Nikolaos Papayannakos
- Chemical Process Engineering Laboratory, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece
| | - Evangelos Topakas
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 5 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece.
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62
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Deprá MC, Severo IA, dos Santos AM, Zepka LQ, Jacob-Lopes E. Environmental impacts on commercial microalgae-based products: Sustainability metrics and indicators. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102056] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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63
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Silva SC, Ferreira ICFR, Dias MM, Barreiro MF. Microalgae-Derived Pigments: A 10-Year Bibliometric Review and Industry and Market Trend Analysis. Molecules 2020; 25:E3406. [PMID: 32731380 PMCID: PMC7435790 DOI: 10.3390/molecules25153406] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 12/23/2022] Open
Abstract
Microalgae productive chains are gaining importance as sustainable alternatives to obtain natural pigments. This work presents a review on the most promising pigments and microalgal sources by gathering trends from a 10-year bibliometric survey, a patents search, and an industrial and market analysis built from available market reports, projects and companies' webpages. The performed analysis pointed out chlorophylls, phycocyanin, astaxanthin, and β-carotene as the most relevant pigments, and Chlorella vulgaris, Spirulina platensis, Haematococcus pluvialis, and Dunaliella salina, respectively, as the most studied sources. Haematococcus is referred in the highest number of patents, corroborating a high technological interest in this microalga. The biorefinery concept, investment in projects and companies related to microalgae cultivation and/or pigment extraction is increasingly growing, particularly, for phycocyanin from Spirulina platensis. These pieces of evidence are a step forward to consolidate the microalgal pigments market, which is expected to grow in the coming years, increasing the prospects of replacing synthetic pigments by natural counterparts.
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Affiliation(s)
- Samara C. Silva
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
- Laboratory of Separation and Reaction Engineering—Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;
| | - Isabel C. F. R. Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
| | - Madalena M. Dias
- Laboratory of Separation and Reaction Engineering—Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;
| | - M. Filomena Barreiro
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
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64
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do Nascimento TC, Cazarin CBB, Maróstica MR, Mercadante AZ, Jacob-Lopes E, Zepka LQ. Microalgae carotenoids intake: Influence on cholesterol levels, lipid peroxidation and antioxidant enzymes. Food Res Int 2020; 128:108770. [DOI: 10.1016/j.foodres.2019.108770] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 10/08/2019] [Accepted: 10/25/2019] [Indexed: 12/11/2022]
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65
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Riccio G, Lauritano C. Microalgae with Immunomodulatory Activities. Mar Drugs 2019; 18:E2. [PMID: 31861368 PMCID: PMC7024220 DOI: 10.3390/md18010002] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/11/2019] [Accepted: 12/16/2019] [Indexed: 12/14/2022] Open
Abstract
Microalgae are photosynthetic microorganisms adapted to live in very different environments and showing an enormous biochemical and genetic diversity, thus representing an excellent source of new natural products with possible applications in several biotechnological sectors. Microalgae-derived compounds have shown several properties, such as anticancer, antimicrobial, anti-inflammatory, and immunomodulatory. In the last decade, compounds stimulating the immune system, both innate immune response and adaptive immune response, have been used to prevent and fight various pathologies, including cancer (cancer immunotherapy). In this review we report the microalgae that have been shown to possess immunomodulatory properties, the cells and the cellular mediators involved in the mechanisms of action and the experimental models used to test immunostimulatory activities. We also report information on fractions or pure compounds from microalgae identified as having immunostimulatory activity. Given the increasing interest in microalgae as new eco-friendly source of bioactive compounds, we also discuss their possible role as source of new classes of promising drugs to treat human pathologies.
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Affiliation(s)
| | - Chiara Lauritano
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, CAP80121 Naples, Italy
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66
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Influence of incorporated Spirulina platensis on the growth of microflora and physicochemical properties of ayran as a functional food. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101710] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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67
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M U N, Mehar JG, Mudliar SN, Shekh AY. Recent Advances in Microalgal Bioactives for Food, Feed, and Healthcare Products: Commercial Potential, Market Space, and Sustainability. Compr Rev Food Sci Food Saf 2019; 18:1882-1897. [PMID: 33336956 DOI: 10.1111/1541-4337.12500] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/24/2019] [Accepted: 08/13/2019] [Indexed: 12/20/2022]
Abstract
To combat food scarcity as well as to ensure nutritional food supply for sustainable living of increasing population, microalgae are considered as innovative sources for adequate nutrition. Currently, the dried biomass, various carotenoids, phycocyanin, phycoerythrin, omega fatty acids, and enzymes are being used as food additives, food coloring agents, and food supplements. Apart from nutritional importance, microalgae are finding the place in the market as "functional foods." When compared to the total market size of food and feed products derived from all the possible sources, the market portfolio of microalgae-based products is still smaller, but increasing steadily. On the other hand, the genetic modification of microalgae for enhanced production of commercially important metabolites holds a great potential. However, the success of commercial application of genetically modified (GM) algae will be defined by their safety to human health and environment. In view of this, the present study attempts to highlight the industrially important microalgal metabolites, their production, and application in food, feed, nutraceuticals, pharmaceuticals, and cosmeceuticals. The current and future market trends for microalgal products have been thoroughly discussed. Importantly, the safety pertaining to microalgae cultivation and consumption, and regulatory issues for GM microalgae have also been covered.
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Affiliation(s)
- Nethravathy M U
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Inst. (CFTRI), Mysore, 570020, India
| | - Jitendra G Mehar
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Inst. (CFTRI), Mysore, 570020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sandeep N Mudliar
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Inst. (CFTRI), Mysore, 570020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ajam Y Shekh
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Inst. (CFTRI), Mysore, 570020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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68
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Camacho F, Macedo A, Malcata F. Potential Industrial Applications and Commercialization of Microalgae in the Functional Food and Feed Industries: A Short Review. Mar Drugs 2019; 17:E312. [PMID: 31141887 PMCID: PMC6628611 DOI: 10.3390/md17060312] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/23/2019] [Accepted: 05/25/2019] [Indexed: 12/23/2022] Open
Abstract
Bioactive compounds, e.g., protein, polyunsaturated fatty acids, carotenoids, vitamins and minerals, found in commercial form of microalgal biomass (e.g., powder, flour, liquid, oil, tablet, or capsule forms) may play important roles in functional food (e.g., dairy products, desserts, pastas, oil-derivatives, or supplements) or feed (for cattle, poultry, shellfish, and fish) with favorable outcomes upon human health, including antioxidant, anti-inflammatory, antimicrobial, and antiviral effects, as well as prevention of gastric ulcers, constipation, anemia, diabetes, and hypertension. However, scale up remains a major challenge before commercial competitiveness is attained. Notwithstanding the odds, a few companies have already overcome market constraints, and are successfully selling extracts of microalgae as colorant, or supplement for food and feed industries. Strong scientific evidence of probiotic roles of microalgae in humans is still lacking, while scarce studies have concluded on probiotic activity in marine animals upon ingestion. Limitations in culture harvesting and shelf life extension have indeed constrained commercial viability. There are, however, scattered pieces of evidence that microalgae play prebiotic roles, owing to their richness in oligosaccharides-hardly fermented by other members of the intestinal microbiota, or digested throughout the gastrointestinal tract of humans/animals for that matter. However, consistent applications exist only in the dairy industry and aquaculture. Despite the underlying potential in formulation of functional food/feed, extensive research and development efforts are still required before microalgae at large become a commercial reality in food and feed formulation.
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Affiliation(s)
- Franciele Camacho
- LEPABE-Laboratory of Process Engineering, Environment, Biotechnology and Energy, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
| | - Angela Macedo
- LEPABE-Laboratory of Process Engineering, Environment, Biotechnology and Energy, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
- UNICES-ISMAI-University Institute of Maia, Av. Carlos Oliveira Campos, 4475-690 Maia, Portugal.
| | - Francisco Malcata
- LEPABE-Laboratory of Process Engineering, Environment, Biotechnology and Energy, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
- Department of Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
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