Microalgae, a Potential Natural Functional Food Source – a Review

Villarruel-López, Angélica; Ascencio, Felipe; Nuño, Karla

doi:10.1515/pjfns-2017-0017

Cited by 107 publications

(55 citation statements)

References 103 publications

(113 reference statements)

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“…Microalgae are photosynthetic microorganisms capable of producing a wide variety of biomolecules in accordance with the division or class to which they belong. The large biodiversity encompasses about 200,000-800,000 species, of which only 50,000 have been taxonomically defined and over 15,000 novel compounds have so far been associated with algae biomass, including carotenoids, sterols, phycobiliproteins, phycotoxins, and polysaccharides [1][2][3]. Phylum Haptophyta comprises two classes, Coccolithophyceae and Pavlovophyceae [4], where the latter includes the two marine species under study, Pavlova lutheri and Pavlova gyrans.…”

Section: Introductionmentioning

confidence: 99%

Marine Microalgae Biomolecules and Their Adhesion Capacity to Salmonella enterica sv. Typhimurium

et al. 2020

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Different molecules have been tested as analog receptors due to their capacity to bind bacteria and prevent cell adhesion. By using in vitro assays, the present study characterized the aqueous and alkaline extracts from microalgae Pavlova lutheri and Pavlova gyrans and evaluated the capacity of these extracts to adhere to enterobacteria (Salmonella Typhimurium). The aqueous and alkaline extracts of both species were fractionated via freeze-thawing, giving rise to soluble and insoluble (precipitate) fractions in cold water. The obtained fractions were studied using thermogravimetric, methylation analyses, and using 1D and 2D NMR techniques. The cold-water-soluble fractions obtained from the aqueous extracts were mainly composed of highly branched (1→3),(1→6)-β-glucans, whereas the cold-water-precipitate fractions were constituted by (1→3)-β-glucans. The alkaline extract fractions showed similar compositions with a high protein content, and the presence of glycosides (sulfoquinovosylglycerol (SQG), digalactosylglycerol (DGG)), and free fatty acids. The linear (1→3)-β-glucans and the alkaline extract fractions showed an adhesion capacity toward Salmonella. The chemical composition of the active fractions suggested that the presence of three-linked β-glucose units, as well as microalgal proteins and glycosides, could be important in the adhesion process. Therefore, these microalgal species possess a high potential to serve as a source of anti-adhesive compounds.

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Section: Introductionmentioning

confidence: 99%

Marine Microalgae Biomolecules and Their Adhesion Capacity to Salmonella enterica sv. Typhimurium

et al. 2020

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“…Therapeutic supplements from microalgae represent an important commodity with compounds such as b-carotene, astaxanthin, polyunsaturated fatty acid (PUFA), such as DHA and EPA, and polysaccharides, such as b-glucan, showing the best commercial potential. Strains of Chlorella, Arthrospira (Spirulina) and Dunaliella have been the focus of research for biofuel production, since they convert solar energy into various chemical forms (Kruse et al 2005;Chisti 2007;Schenk et al 2008;Priyadarshani & Rath 2012;Villarruel-Lopez et al 2017;Carrasco et al 2018;Gatamaneni et al 2018;Kumar et al 2018;Pierobon et al 2018;Velazquez-Lucio et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Advances and challenges in genetic engineering of microalgae

Fajardo

Donato

Carrasco

et al. 2019

Reviews in Aquaculture

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Knowledge at the molecular level of microalgae has obtained great scientific interest in recent years, because of their potential for biofuel production, as well as other highly valued molecules. Recent advances in the area of the genetic manipulation of microalgae open an entirely new field of possible applications for these organisms as biorefineries. This review represents a compendium that gathers the main milestones that have marked the area of genetic engineering in microalgae during the last decade, from classical techniques for the transformation and expression of transgenes, to the most avant‐garde techniques currently used for gene silencing and DNA edition, as well as a discussion about the future perspectives in this field.

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“…Among the microalgae that can be offered to these cladoceran, Chlorella vulgaris is one of the most widely used, not only because of its ideal size, ease of cultivation and accelerated growth (Lourenço, 2006) but also because it has a significant nutritional content. Its protein content is more than 40% of its dry weight (Matosi et al, 2015) and it has a high concentration of fatty acids, which are about 10% of its dry weight (Villarruel-López et al, 2017). Of the total amount of fatty acids, 40.8% are polyunsaturated fatty acids (PUFA) (Tibbetts et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF THE C:N RATIO ON <i>Daphnia magna<i> (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER

et al. 2019

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The purpose of this study was to produce Daphnia magna in wastewater from Tilapia farmed in a biofloc system, to evaluate three different carbohydrate:nitrogen ratios. The experiment was conducted for 30 days following a completely randomized experimental design, with the three treatments: C:N 10:1, C:N 15:1 and C:N 20:1, all fed with Chlorella vulgaris. The physical-chemical variables of the water analyzed were: temperature, dissolved oxygen (DO), pH, TAN, NO 2 , hardness and alkalinity. The following growth variables of the Daphnia were also evaluated: Maximum average density (MAD), Maximum density day (MDD), Specific growth rate (SGR), Doubling time (DT) and yield (Y). The water quality variables remained in the range of ideal conditions for the species, presenting significant differences (p <0.05) among the treatments for: pH, DO, hardness and alkalinity. Regarding the growth variables, significant differences (p <0.05) were observed, with higher MAD, Y and SGR values for the 10:1 treatment (3,433 ± 267 ind L-1 , 245 ± 19 ind L-1 day-1 and 45.3 ± 0.6% day-1 , respectively) and lower for the 20:1 (1,011 ± 283 ind L-1 , 55 ± 15 ind L-1 day-1 and 28.3 ± 1.6% day-1 , respectively). The MDD occurred on day 12 for the 10:1 treatment and on day 18 for the 15:1 and 20:1 treatments. Alkalinity and hardness had stronger influence on the growth variables, which was also indicated by the simple linear regression. The principal component analysis (PCA), with 80% of explanation, identified high values of SGR, density and Y for the 10:1 and high values of alkalinity, hardness, DT and NO 2 for the 20:1. Thus, the use of effluent from Tilapia farming in a biofloc system with a C:N ratio of 10:1 provided better production results for D. magna, demonstrating that it is an option for the production of live feed for aquaculture.

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Microalgae, a Potential Natural Functional Food Source – a Review

Cited by 107 publications

References 103 publications

Marine Microalgae Biomolecules and Their Adhesion Capacity to Salmonella enterica sv. Typhimurium

Marine Microalgae Biomolecules and Their Adhesion Capacity to Salmonella enterica sv. Typhimurium

Advances and challenges in genetic engineering of microalgae

EFFECT OF THE C:N RATIO ON <i>Daphnia magna<i> (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER

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