Valorizing fish canning industry by-products to produce <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="mml24" display="inline" overflow="scroll" altimg="si1.gif"><mml:mi>ω</mml:mi></mml:math>-3 compounds and biodiesel

Silva, Teresa Lopes da; Santos, Amanda Rithieli Pereira dos; Gomes, Ruth; Reis, Alberto

doi:10.1016/j.eti.2017.11.002

Cited by 13 publications

(5 citation statements)

References 10 publications

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“…Figure 1 shows C. cohnii biomass saponification and EE separation. The method was based on that reported by Mendes et al [16] and Lopes da Silva et al [33], with improvements. In this work, the EE fractionation by urea addition at different temperatures (25 • C, 4 • C and −18 • C) was performed.…”

Section: Cohnii Biomass Saponification and Ee Fractionationmentioning

confidence: 99%

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The Biorefinery of the Marine Microalga Crypthecodinium cohnii as a Strategy to Valorize Microalgal Oil Fractions

et al. 2022

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Chrypthecodinium cohnii lipids have been almost exclusively used as a source of Docosahexaenoic acid (DHA). Such an approach wastes the remaining microalgal lipid fraction. The present work presents a novel process to produce C. cohnii biomass, using low-cost industrial by-products (raw glycerol and corn steep liquor), in a 7L-bioreactor, under fed-batch regime. At the end of the fermentation, the biomass concentration reached 9.2 g/L and the lipid content and lipid average productivity attained 28.0% (w/w dry cell weight) and 13.6 mg/L h, respectively. Afterwards the microalgal biomass underwent a saponification reaction to produce fatty acid (FA) soaps, which were further converted into FA ethyl ester (FA EE). C. cohnii FA EE mixture was then fractionated, using the urea complexation method at different temperatures, in order to obtain a polyunsaturated fatty acid ethyl ester (PUFA EE) rich fraction, that could be used for food/pharmaceutical/cosmetic purposes, and a saturated fatty acid ethyl ester (SAT EE) rich fraction, which could be used as biodiesel. The temperature that promoted the best separation between PUFA and SAT EE, was −18 °C, resulting in a liquid fraction with 91.6% (w/w) DHA, and a solid phase with 88.2% of SAT and monounsaturated fatty acid ethyl ester (MONOUNSAT), which could be used for biodiesel purposes after a hydrogenation step.

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Section: Cohnii Biomass Saponification and Ee Fractionationmentioning

confidence: 99%

“…The C. cohnii biomass production step was followed by biomass saponification and lipid fractionation using the urea complexation method, which has been successfully used to concentrate PUFA in diverse lipidic materials, including vegetable and fish microalgal oils [11,16,27,33].…”

Section: Cohnii Faee Fractionationmentioning

confidence: 99%

The Biorefinery of the Marine Microalga Crypthecodinium cohnii as a Strategy to Valorize Microalgal Oil Fractions

et al. 2022

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“…124,125 2. Fatty acids and lipids: The lipids extracted from algae, fish, and marine invertebrate waste can be used for biodiesel production 63,69,86,[101][102][103] or in food, nutraceutical, and pharmaceutical industries. 75 Seafood oil and fat are valuable sources of liposoluble vitamins (e.g., E, D, and A), 75,109 monounsaturated fatty acids, 110 omega-3 fatty acids, 82,83,102 phospholipids, 80,81 polyunsaturated fatty acids, 79,80 and saturated fatty acids.…”

Section: Fishing and Aquaculture Industries Waste And Productsmentioning

confidence: 99%

From green to blue economy: Marine biorefineries for a sustainable ocean-based economy

et al. 2021

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“…After the DHA extraction, the remaining lipid fraction, composed of SFA and MUFA, can be directed to biodiesel purposes [15]. If the properties of this fraction does not allow obtaining a final product within the biodiesel quality specifications-EN 14214, it can be used in mixture with vegetable oils containing low SFA content.…”

Section: Cohnii Lipid Productionmentioning

confidence: 99%

Raw Glycerol Based Medium for DHA and Lipids Production, Using the Marine Heterotrophic Microalga Crypthecodinium cohnii

et al. 2021

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Crude glycerol, a biodiesel industry byproduct, and corn steep liquor (CSL) derived from a starch industry, were used as carbon and nitrogen sources, respectively, for lipid production, using the heterotrophic microalga C. cohnii grown in a bench bioreactor, in a batch culture. The maximum biomass concentration, lipid content and lipid productivity attained were 5.34 g/L, 24.6% (w/w Dry Cell Weight-DCW) and 0.016 g L−1 h−1, respectively. Flow cytometry analysis was used to evaluate the impact of these substrates on the microalgae cells. A high proportion of intact cells with enzymatic (esterases) activity (>50%) was present throughout the cultivation time course. These results indicate that crude glycerol and CSL can be used in the medium formulation for DHA and lipid production using this microalga, which reduce the process costs in an expected maximum of 84%.

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Valorizing fish canning industry by-products to produce ω-3 compounds and biodiesel

Cited by 13 publications

References 10 publications

The Biorefinery of the Marine Microalga Crypthecodinium cohnii as a Strategy to Valorize Microalgal Oil Fractions

The Biorefinery of the Marine Microalga Crypthecodinium cohnii as a Strategy to Valorize Microalgal Oil Fractions

From green to blue economy: Marine biorefineries for a sustainable ocean-based economy

Raw Glycerol Based Medium for DHA and Lipids Production, Using the Marine Heterotrophic Microalga Crypthecodinium cohnii

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