Microalgae Cultivation for the Biotransformation of Birch Wood Hydrolysate and Dairy Effluent

Lage, Sandra; Kudahettige, N. P.; Ferro, Lorenza; Μάτσακας, Λεωνίδας; Funk, Christiane; Gentili, Francesco G.

doi:10.3390/catal9020150

Cited by 17 publications

(11 citation statements)

References 48 publications

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“…To reduce the cost of the carbon source, an alternative to glucose, low-cost carbon sources have been extensively studied in the literature. Among them, the use of residual lignocellulosic biomass such as agricultural and forest residues, as well as energy crops, is extensively studied in the literature [37][38][39][40][41][42][43][44][45]. Another well-studied alternative carbon source is glycerol.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

et al. 2020

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Microorganisms are known to be natural oil producers in their cellular compartments. Microorganisms that accumulate more than 20% w/w of lipids on a cell dry weight basis are considered as oleaginous microorganisms. These are capable of synthesizing vast majority of fatty acids from short hydrocarbonated chain (C6) to long hydrocarbonated chain (C36), which may be saturated (SFA), monounsaturated (MUFA), or polyunsaturated fatty acids (PUFA), depending on the presence and number of double bonds in hydrocarbonated chains. Depending on the fatty acid profile, the oils obtained from oleaginous microorganisms are utilized as feedstock for either biodiesel production or as nutraceuticals. Mainly microalgae, bacteria, and yeasts are involved in the production of biodiesel, whereas thraustochytrids, fungi, and some of the microalgae are well known to be producers of very long-chain PUFA (omega-3 fatty acids). In this review article, the type of oleaginous microorganisms and their expertise in the field of biodiesel or omega-3 fatty acids, advances in metabolic engineering tools for enhanced lipid accumulation, upstream and downstream processing of lipids, including purification of biodiesel and concentration of omega-3 fatty acids are reviewed.

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Section: Introductionmentioning

confidence: 99%

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

et al. 2020

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“…In another investigation, the main fatty acid profiles were C16:0, C18:1, and C18:2 when various microalgal species ( C. vulgaris , C. sacharophila , C. sorokiniana , and Coelostrella sp.) were cultivated mixotrophically on dairy effluents and Birch wood hydrolysate 63 . Similarly, main fatty acids produced in recent studies also ranged from C16:0 to C18:0 when sugarcane‐bagasse hydrolysate was utilized mixotrophically while growing C. vulgaris and Nannochloropsis sp.…”

Section: Resultsmentioning

confidence: 93%

Mixotrophic cultivation of Chlorella vulgaris in sugarcane molasses preceding nitrogen starvation: Biomass productivity, lipid content, and fatty acid analyses

Laraib

Manzoor

Javid

et al. 2021

Env Prog and Sustain Energy

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In the present study, a precharacterized oleaginous microalgal species (Chlorella vulgaris) was exploited for its biomass productivity, lipid yield, and fatty acid analysis under mixotrophic and photoautotrophic conditions. For the purpose, the microalgal biomass was raised mixotrophically as well photoautotrophically. For mixotrophic cultivation, molasses was used as additional source of carbon and energy, while for photoautotrophic cultivation, atmospheric CO 2 was the sole source of carbon and energy. The microalgal biomass raised thus was then harvested following 5 days of nitrogen starvation. Mixotrophic cultivation depicted remarkably higher biomass productivity (137.43 ± 13.3 mg L −1 day −1 ) than that of photoautotrophic cultivation (91.57 ± 7.9 mg L −1 day −1 ). About 39% (w/w) of total lipid content was obtained from the dried biomass raised mixotrophically. Lipidomic analysis of the extracted oil depicted higher concentrations of polyunsaturated fatty acids (palmitic and oleic acids). The significant availability of polyunsaturated fatty acids (60 mg g −1 of dried algal biomass) ensured the production of high quality biofuel.

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“…The enzymatic hydrolysate was applied as nutrient for Crypthecodinium cohnii growth with successful results, reaching up to 43.5% of DHA. The ability of Crypthecodinium cohnii strain to grow on galacturonic acid obtained from the valorization of exhausted olive pomace suggests that galacturonic acid could represent a good candidate to be investigated in biotechnological applications [98]. Some authors described a combination of nutrients as alternative source.…”

Section: Alternative Carbon Sources For Sustainable Epa/dha Productionmentioning

confidence: 99%

Producing Omega-3 Polyunsaturated Fatty Acids: A Review of Sustainable Sources and Future Trends for the EPA and DHA Market

et al. 2020

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Omega-3 polyunsaturated fatty acids (Omega-3 PUFA) are recognized as being essential compounds for human nutrition and health. The human body generates only low levels of Omega-3 PUFA. Conventional sources of Omega-3 PUFA are from marine origin. However, the global growth of population combined with a better consumer understanding about healthy nutrition leads to the fact that traditional sources are exhausted and therefore not enough to satisfy the demand of Omega-3 PUFA for human diet as well as aquaculture. Microalgae cultivated under heterotrophic conditions is increasingly recognized as a suitable technology for the production of the Omega-3 PUFA. The high cost of using glucose as main carbon source for cultivation is the main challenge to establish economical feasible production processes. The latest relevant studies provide alternative pathways for Omega-3 PUFA production. As preliminary results show, volatile fatty acids (VFA) recovered from waste stream could be a good alternative to the use of glucose as carbon source in microalgae cultivation. The purpose of this paper is to highlight the actual situation of Omega-3 PUFA production, sources and market request to provide a summary on sustainable sources that are being investigated as well as present and future market trends in Omega-3 market.

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Microalgae Cultivation for the Biotransformation of Birch Wood Hydrolysate and Dairy Effluent

Cited by 17 publications

References 48 publications

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

Mixotrophic cultivation of Chlorella vulgaris in sugarcane molasses preceding nitrogen starvation: Biomass productivity, lipid content, and fatty acid analyses

Producing Omega-3 Polyunsaturated Fatty Acids: A Review of Sustainable Sources and Future Trends for the EPA and DHA Market

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