Recovery of Protein Concentrates From Microalgal Biomass Grown in Manure for Fish Feed and Valorization of the By-Products Through Anaerobic Digestion

Hernández, D.; Molinuevo-Salces, Beatriz; Riaño, Berta; Larrán-García, Ana María; Tomás-Almenar, Cristina; García-González, María Cruz

doi:10.3389/fsufs.2018.00028

Cited by 17 publications

(7 citation statements)

References 41 publications

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“…shows that the highest Mg concentration was 9697.65 [mg (100g dw ) -1 ] (25 times higher than in the initial biomass), observed for the culture grown at 0.27 g L -1 of sodium nitrate, 0.00 g L -1 of sodium acetate and 95.28 μE m -2 s -1 (Figure 6). Under these conditions the Mg concentration in Scenedesmus obliquus is higher than that previously reported by Hernández, et al [19] for Scenedesmus almeriensis growing in pig manure (511 [mg (100g dw ) -1 ]).…”

Section: Analysis Of the Response Surface Methodology (Rsm)contrasting

confidence: 53%

Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass

Mariana¹,

Zapata²,

Gina³

et al. 2020

J Biomed Res Environ Sci

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Research Article Microalgae are capable of absorbing and concentrating constituent elements that have a wide variety of applications in agriculture, food industry, and medicine. Microalgae chemical composition change according to internal and external factors. In this study, the effect of irradiance, sodium nitrate and sodium acetate concentration on the accumulation of essential minerals in Scenedesmus obliquus biomass were evaluated using 2 3 factorial screening designs. The simultaneous effect of the three experimental factors was studied using three levels for each parameter (irradiance: 36.71, 69.50, 102.30 μE m-2 s-1 , sodium nitrate: 0.27, 44.00, 87.73 g L-1 and sodium acetate: 0.00, 2.50, 5.02 g L-1). The response variables were the minerals concentration of Na, K, Ca, Mg, Fe, Zn and Mn. Results show that each mineral has an optimal operation condition in order to improve its concentration in the microalgae biomass. A signifi cant interaction between the variables was observed, which has direct effects on the minerals accumulation in the microalgae biomass. Under these conditions, the maximum concentration of K (1515.77 [mg (100g dw)-1 ]), Ca (2744.24 [mg (100g dw)-1 ]), Mg (9697.65 [mg (100g dw)-1 ]), Fe (2932.42 [mg (100g dw)-1 ]), Mn (38.48 [mg (100g dw)-1 ]), Zn (324.00 [mg (100g dw)-1 ]) and the minimum concentration of Na (5607.20 [mg (100g dw)-1 ]) were obtained from the microalga biomass. Thus, Scenedesmus obliquus biomass was characterized as good essential mineral source and confi rmed to be potentially valuable ingredient for utilization in the food industry.

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Section: Analysis Of the Response Surface Methodology (Rsm)contrasting

confidence: 53%

Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass

Mariana¹,

Zapata²,

Gina³

et al. 2020

J Biomed Res Environ Sci

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show abstract

“…After extraction, insoluble residues are separated by centrifugation or filtration. Proteins in the extracted solutions are then precipitated by adjusting the solution pH to an isoelectric point (pI) which varies depending on protein type, pH 5.2-6.0 for fish proteins [12] and 3.0-4.0 for proteins of different microalgae species [51,331,332]. Precipitating fish proteins, i.e., herring proteins, at pH 5.5 recovered approximately 96% and 94% for acidic and alkaline extractions respectively [330], but 95-97% of microalgal proteins were precipitated at pH 3.0 for neutral and alkaline extracts [51].…”

Section: Isoelectric Solubilisation/precipitation (Isp) Process For Imentioning

confidence: 99%

Protein Recovery from Underutilised Marine Bioresources for Product Development with Nutraceutical and Pharmaceutical Bioactivities

2020

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The global demand for dietary proteins and protein-derived products are projected to dramatically increase which cannot be met using traditional protein sources. Seafood processing by-products (SPBs) and microalgae are promising resources that can fill the demand gap for proteins and protein derivatives. Globally, 32 million tonnes of SPBs are estimated to be produced annually which represents an inexpensive resource for protein recovery while technical advantages in microalgal biomass production would yield secure protein supplies with minimal competition for arable land and freshwater resources. Moreover, these biomaterials are a rich source of proteins with high nutritional quality while protein hydrolysates and biopeptides derived from these marine proteins possess several useful bioactivities for commercial applications in multiple industries. Efficient utilisation of these marine biomaterials for protein recovery would not only supplement global demand and save natural bioresources but would also successfully address the financial and environmental burdens of biowaste, paving the way for greener production and a circular economy. This comprehensive review analyses the potential of using SPBs and microalgae for protein recovery and production critically assessing the feasibility of current and emerging technologies used for the process development. Nutritional quality, functionalities, and bioactivities of the extracted proteins and derived products together with their potential applications for commercial product development are also systematically summarised and discussed.

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“…The Ca content of our hydrochars, (54.0 ± 1.2) mg g -1 , is much higher than that reported by Ekpo et al (2016): 16.8 mg g -1 . The difference can ascribed to the origin of our MAB, which was fed with pig manure rich in mineral matter (Hernández et al, 2018); also, the difference reflected in a high ash content in the hydrochars (Table 1). Phosphorus content, which is a highly valuable byproduct for use in a number of fertilizers, increased by a factor of 1.8 upon hydrothermal treatment at 240 ºC, but remained at its initial level with the treatment at 180 ºC.…”

Section: (2018)mentioning

confidence: 99%

Valorization of microalgal biomass by hydrothermal carbonization and anaerobic digestion

Marin-Batista

Villamil

Rodrı́guez

et al. 2019

Bioresource Technology

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Recovery of Protein Concentrates From Microalgal Biomass Grown in Manure for Fish Feed and Valorization of the By-Products Through Anaerobic Digestion

Cited by 17 publications

References 41 publications

Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass

Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass

Protein Recovery from Underutilised Marine Bioresources for Product Development with Nutraceutical and Pharmaceutical Bioactivities

Valorization of microalgal biomass by hydrothermal carbonization and anaerobic digestion

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