Microalgae – source of natural bioactive molecules as functional ingredients

Gouveia, Luísa; Marques, Ana Evangelista; Sousa, João Marcelo de Castro e; Moura, Patrícia; Bandarra, Narcisa M.

doi:10.1616/1476-2137.15884

Cited by 64 publications

(38 citation statements)

References 142 publications

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“…Microalgae are a key unicellular resource of commercially important protein, lipids, carotenoids, enzymes, vitamins, minerals, phenolic compounds, polysaccharides and chlorophyll (Gouveia et al . ).…”

Section: Introductionmentioning

confidence: 97%

Low light intensity and nitrogen starvation modulate the chlorophyll content of Scenedesmus dimorphus

2016

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Section: Introductionmentioning

confidence: 97%

Low light intensity and nitrogen starvation modulate the chlorophyll content of Scenedesmus dimorphus

2016

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“…(Helistö et al 2001), and Paenibacillus ehimensis (Aktuganov et al 2008). β-1,3-Glucanase is useful for preparation of biologically active β-1,3-oligomers and protoplast of fungi and yeast cells and production of bioethanol from brown algae (Story et al 2014;Gouveria et al 2010). We have isolated many aerobic and heterotrophic bacteria from deep subseafloor core sediments collected by the deep-sea drilling vessel BChikyu^off Shimokita Peninsula of Japan at a water depth of 1180 m (Kobayashi et al 2008).…”

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confidence: 99%

Biochemical and genetic characterization of β-1,3 glucanase from a deep subseafloor Laceyella putida

Kobayashi

Uchimura

Kubota

et al. 2015

Appl Microbiol Biotechnol

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A β-1,3-glucanase (LpGluA) of deep subseafloor Laceyella putida JAM FM3001 was purified to homogeneity from culture broth. The molecular mass of the enzyme was around 36 kDa as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). LpGluA hydrolyzed curdlan optimally at pH 4.2 and 80 °C. In spite of the high optimum temperature, LpGluA showed relatively low thermostability, which was stabilized by adding laminarin, xylan, colloidal chitin, pectin, and its related polysaccharides. The gene for LpGluA cloned by using degenerate primers was composed of 1236 bp encoding 411 amino acids. Production of both LpGluA and a chitinase (LpChiA; Shibasaki et al. Appl Microbiol Biotechnol 98, 7845-7853, 2014) was induced by adding N-acetylglucosamine (GluNAc) to a culture medium of strain JAM FM3001. Construction of expression vectors containing the gene for LpGluA and its flanking regions showed the existence of a putative repressor protein.

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“…Only the concentration of Zn in the SW is below reported values in other cultivated green seaweeds of the genus Ulva (Afonso et al, ). Regarding the microalgal biomass, which corresponded to 100% of the feed in SW0, it is known that a balanced mineral content in the cultivation medium is required and largely reflected in the biomass composition (Gouveia, Marques, Sousa, Moura, & Bandarra, ).…”

Section: Resultsmentioning

confidence: 99%

Elemental composition and bioaccessibility of farmed oysters (Crassostrea gigas) fed different ratios of dietary seaweed and microalgae during broodstock conditioning

Cardoso

Gomes

Rato

et al. 2019

Food Science & Nutrition

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The Pacific oyster ( Crassostrea gigas ) culture has been expanding, thereby leading to a greater importance of hatcheries. Broodstock conditioning is very important in the hatchery process, in which diet composition may have a strong influence on the offspring production and quality. Therefore, the current study evaluated elemental composition and bioaccessibility of oysters fed different ratios of dietary seaweed (SW) and microalgae. The dietary conditioning consisted of direct replacement of microalgae by SW at four substitution levels (0%, 25%, 50%, and 100% diet). It was observed that oysters fed 100% SW had the highest levels of Be, Cu, Zn, Sr, and Cd. The most important trend was a concentration decline of most elements with progressively lower levels of SW substitution for microalgae in the feeds. No Cd or Pb hazard (contents below 1.0 mg/kg for Cd and 1.5 mg/kg for Pb) was found in oyster meat. Regarding elemental bioaccessibility, values were similar, near 100% in the cases of Cu, Br, and I. Only for Mn and Pb, bioaccessibility percentages deviated more from 100%. Indeed, the value for Pb was 50% ± 7% (initial group), and for Mn, all values were equal or lower than 29% ± 2% (final group of oysters fed microalgae). It was observed that Mn, Cd, and Pb bioaccessibility increased with a growing share of microalgal biomass in the feed. Therefore, this study showed that SW incorporation into the feed influences elemental composition and bioaccessibility of the oysters.

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Microalgae – source of natural bioactive molecules as functional ingredients

Cited by 64 publications

References 142 publications

Low light intensity and nitrogen starvation modulate the chlorophyll content of Scenedesmus dimorphus

Low light intensity and nitrogen starvation modulate the chlorophyll content of Scenedesmus dimorphus

Biochemical and genetic characterization of β-1,3 glucanase from a deep subseafloor Laceyella putida

Elemental composition and bioaccessibility of farmed oysters (Crassostrea gigas) fed different ratios of dietary seaweed and microalgae during broodstock conditioning

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