Extraction and fractionation of microalgae-based protein products

Sierra, Laura Soto; Stoykova, Petya; Nikolov, Z̆ivko L.

doi:10.1016/j.algal.2018.10.023

Cited by 199 publications

(115 citation statements)

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“…their ability to perform photoautotrophic, mixotrophic, or heterotrophic metabolism , they represent promising biological systems for treating a variety of sources of wastewater. In particular, in the context of a circular and bio‐based economy and the development of biorefinery concepts , microalgae biomass produced from wastewater streams offers a great potential for sustainable bioproducts (dependent on national legislation on reusing microalgae biomass/bioproducts), such as proteins , fatty acids , pigments , biofertilizers/biochar , and animal feed . Algae‐based WWT technologies have in fact been researched since the 1950s, mainly because of their very efficient fixation of inorganic N and P.…”

Section: Introductionmentioning

confidence: 99%

Microalgae wastewater treatment: Biological and technological approaches

Wollmann

Dietze

Ackermann

et al. 2019

Engineering in Life Sciences

268

108

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Current global environmental issues raise unavoidable challenges for our use of natural resources. Supplying the human population with clean water is becoming a global problem. Numerous organic and inorganic impurities in municipal, industrial, and agricultural waters, ranging from microplastics to high nutrient loads and heavy metals, endanger our nutrition and health. The development of efficient wastewater treatment technologies and circular economic approaches is thus becoming increasingly important. The biomass production of microalgae using industrial wastewater offers the possibility of recycling industrial residues to create new sources of raw materials for energy and material use. This review discusses algae‐based wastewater treatment technologies with a special focus on industrial wastewater sources, the potential of non‐conventional extremophilic (thermophilic, acidophilic, and psychrophilic) microalgae, and industrial algae‐wastewater treatment concepts that have already been put into practice.

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Section: Introductionmentioning

confidence: 99%

Microalgae wastewater treatment: Biological and technological approaches

Wollmann

Dietze

Ackermann

et al. 2019

Engineering in Life Sciences

268

108

View full text Add to dashboard Cite

show abstract

“…Regarding protein, even though the content is relatively low (15%), it can be considered as a valuable product for food, feed and technical purposes of lower economic concern. To utilize starch/glucose and simultaneously increase the protein output, the conversion of glucose into protein via heterotrophic algae (single cell protein) represents a possible approach for overcoming the above mentioned drawbacks . Chlorella spp.…”

Section: Introductionmentioning

confidence: 99%

“…Chlorella spp. is one of the possible microalgae that can be used for human food and animal feed because of its high protein content (up to around 60%) . In addition, it contains all of the essential amino acids .…”

Section: Introductionmentioning

confidence: 99%

“…To utilize starch/glucose and simultaneously increase the protein output, the conversion of glucose into protein via heterotrophic algae (single cell protein) represents a possible approach for overcoming the above mentioned drawbacks. 3,4 Chlorella spp. is one of the possible microalgae that can be used for human food and animal feed because of its high protein content (up to around 60%).…”

Section: Introductionmentioning

confidence: 99%

“…is one of the possible microalgae that can be used for human food and animal feed because of its high protein content (up to around 60%). 4,5 In addition, it contains all of the essential amino acids. 6 As far as hemicellulose is concerned, the production of soluble dietary fiber or arabionoxylan may have commercial potential.…”

Section: Introductionmentioning

confidence: 99%

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Transformation of rice bran into single‐cell protein, extracted protein, soluble and insoluble dietary fiber, and minerals

2019

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BACKGROUND It is evident that, during the conversion of agricultural sidestreams into valuable substances, a complete utilization is necessary for economic reasons. The present study investigated the transformation of defatted rice bran into proteins (single cell and extracted protein), soluble and insoluble dietary fiber, and minerals. RESULTS In a process chain, starch/glucose was enzymatically extracted and converted into single cell protein (Chlorella sorokiniana). Then, rice bran proteins were extracted and partially precipitated. The remaining liquid was ultrafiltered (3 kDa) to obtain a further protein fraction and minerals. The protein fraction contained a considerable amount of soluble dietary fiber. With these steps, around 69% of the rice bran was transformed, resulting in three protein fractions with an average purity of approximately 45% and minerals with a purity of approximately 63%. In a subsequent process, the remaining cake was disintegrated at 95 °C and pH 2. A further 12% of the rice bran could be liquefied. After centrifugation, the supernatant was subjected to ultrafiltration (3 kDa) to obtain soluble dietary fiber in the retentate and minerals in the permeate. However, only around 2% of the rice bran was converted into soluble dietary fiber, whereas the remainder comprised a mixture of minerals and monomeric sugars. CONCLUSION The process chain can be rearranged and optimized especially to increase the output of soluble dietary fiber and proteins as a result of using the digested monomeric sugars for algae cultivation. At the end of the process, 18% of rice bran remained as an insoluble dietary fiber fraction. © 2019 Society of Chemical Industry

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Extraction Technologies for Proteins and Peptides

Tremblay

Beaulieu

2021

Recent Advances in Micro and Macroalgal Processing

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Extraction and fractionation of microalgae-based protein products

Cited by 199 publications

References 119 publications

Microalgae wastewater treatment: Biological and technological approaches

Microalgae wastewater treatment: Biological and technological approaches

Transformation of rice bran into single‐cell protein, extracted protein, soluble and insoluble dietary fiber, and minerals

Extraction Technologies for Proteins and Peptides

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