Bioethanol production from carbohydrate-enriched residual biomass obtained after lipid extraction of Chlorella sp. KR-1

Lee, Ok Kyung; Oh, You-Kwan; Lee, Eun Yeol

doi:10.1016/j.biortech.2015.07.040

Cited by 99 publications

(29 citation statements)

References 32 publications

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“…(and similar species like Scenedesmus, Chlamydomonas, and Tetraselmis) typically produce large amounts of carbohydrate as energy and carbon reserves. As a result, it has been proposed that the use of carbohydrate-rich algal biomass (for example C. vulgaris) as feedstock for bioethanol production may be advantageous over conventional feedstocks by providing increased hydrolysis efficiency, higher fermentable yields, and reduced production costs [35,36].…”

Section: Composition Of Algal Biomassmentioning

confidence: 99%

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Matos

Feller

Moecke

et al. 2016

J Americ Oil Chem Soc

131

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Microalgae contain high levels of proteins, carbohydrates, and lipids, and have found a useful application in enhancing the nutritional value of foods. These organisms can also synthesize long‐chain fatty acids in the form of triacylglycerols, such as α‐linolenic acid (ALA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), linolenic acid (LA), γ‐linolenic acid (GLA) and arachidonic acid (AA). The aim of this study was to determine the chemical composition and measure protein, carbohydrates, fibers, lipids as well as the fatty acids composition of six microalgae species with potential application in the food industry. Two freshwater species, Chlorella vulgaris and Spirulina platensis, and four marine species, Nannochloropsis oculata, Nannochloropsis gaditana, Porphyridium cruentum, and Phaeodactylum tricornutum, were used in the experiments. Intracellular protein was the most prominent algal component (42.8–35.4 %), followed by carbohydrate + fiber (32.3–28.6 %), and lipids (15.6–5.3 %). N. gaditana is rich in saturated fatty acids, mainly palmitic acid (5.1 g/100 g), while the cells of S. platensis and C. vulgaris algae are abundant in GLA (1.9 g/100 g) and ALA (2.8 g/100 g) acids, respectively. P. cruentum differs from other algae, because it contains a large amount of AA (3.7 g/100 g). The marine microorganisms N. oculata and P. tricornutum are also a source of essential long‐chain polyunsaturated fatty acids (LC‐PUFA‐ɷ3), mainly composed of EPA and DHA. Our results suggest that the freshwater species C. vulgaris and S. platensis are attractive nutritional supplements because of their low fiber and high protein/carbohydrate contents, while the marine species P. tricornutum and N. oculata can enrich foods with LC‐PUFA‐ω3, because of their favorable ω3/ω6 ratio.

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Section: Composition Of Algal Biomassmentioning

confidence: 99%

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Matos

Feller

Moecke

et al. 2016

J Americ Oil Chem Soc

131

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“…Besides, lipid extract from C. sorokiniana has been found rich in ω-3 and ω-6 polyunsatured fatty acids and effective to improve short-term memory in rats [12]. carotenoids, hydrogen [1], and bioethanol [17]. Where Chlorella water extracts and their immuno stimulatory biopolymer isolates are drawing great attention to enhance their functionalities in antiageing (anti-radicals) for skin scare or boosting immunological systems for health purposes.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Extraction Process and Characterization of Antioxidant Ingredients from Chlorella Sorokiniana

Lai¹,

Sun²

2017

MOJFPT

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“…Carbohydrates in the form of starch, cellulose, hemicellulose can be converted into monosaccharides by chemical or enzymatic processes, and can thus be used for the production of bioethanol by the fermentation process . Lee et al in studies with Chlorella sp. KR‐1 biomass observed that after acid hydrolysis, carbohydrates representing 36.1% (wt/wt) of dry weight in the cells were converted to monosaccharides (glucose—82.8%, galactose—5.5%, xylose—0.9%, arabinose—5.3%, and rhamnose—5.4%).…”

Section: Resultsmentioning

confidence: 99%

“…Lee et al40 in studies with Chlorella sp. KR-1 biomass observed that after acid hydrolysis, carbohydrates representing 36.1% (wt/wt) of dry weight in the cells were converted to monosaccharides (glucose-82.8%, galactose-5.5%, xylose-0.9%, arabinose-5.3%, and rhamnose-5.4%).…”

mentioning

confidence: 99%

Bioprocess strategies for enhancing biomolecules productivity in Chlorella fusca LEB 111 using CO₂ a carbon source

Moraes

Santos

Costa

2019

Biotechnology Progress

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The aim of this study was to evaluate the influence of different carbon dioxide (CO2) concentrations on the distribution of carbon forms in the culture medium and the biomass production and biomolecules productivity of the strain Chlorella fusca LEB 111. In this study, experiments were carried out in which C. fusca cultures were exposed to different CO2 concentrations, 0.03% (0.08 mlCO2 mlmedium−1 days−1), 5% (0.18 mlCO2 mlmedium−1 days−1), and 15% vol/vol CO2 (0.54 mlCO2 mlmedium−1 days−1). Among the carbon chemical species distributions in the culture medium, bicarbonate was predominant (94.2–98.9%), with the highest quantitative percentage in the experiment receiving a 15% CO2 injection. C. fusca LEB 111 cultivated with 15% CO2 showed the highest biomass productivity (194.3 mg L−1 days−1) and CO2 fixation rate (390.9 mg L−1 days−1). The carbohydrate productivity in the culture that received 15% CO2 was 46.2% higher than the value verified for the culture with the addition of CO2 from the air (0.03% CO2). In addition, CO2 concentration providing increases of 0.03–15% to C. fusca cultures resulted in a 31.6% increase in the lipid productivity. These results showed that C. fusca can be used for CO2 bioconversion and for producing biomass with potential applications for biofuels and bioproducts.

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Bioethanol production from carbohydrate-enriched residual biomass obtained after lipid extraction of Chlorella sp. KR-1

Cited by 99 publications

References 32 publications

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Optimizing Extraction Process and Characterization of Antioxidant Ingredients from Chlorella Sorokiniana

Bioprocess strategies for enhancing biomolecules productivity in Chlorella fusca LEB 111 using CO₂ a carbon source

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Bioethanol production from carbohydrate-enriched residual biomass obtained after lipid extraction of Chlorella sp. KR-1

Cited by 99 publications

References 32 publications

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Chemical Characterization of Six Microalgae with Potential Utility for Food Application

Optimizing Extraction Process and Characterization of Antioxidant Ingredients from Chlorella Sorokiniana

Bioprocess strategies for enhancing biomolecules productivity in Chlorella fusca LEB 111 using CO2 a carbon source

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Bioprocess strategies for enhancing biomolecules productivity in Chlorella fusca LEB 111 using CO₂ a carbon source