Emulsion properties of algae soluble protein isolate from Tetraselmis sp.

Schwenzfeier, Anja; Helbig, A.; Wierenga, Peter A.; Gruppen, Harry

doi:10.1016/j.foodhyd.2012.06.002

Cited by 83 publications

(51 citation statements)

References 25 publications

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“…The lipid fraction of some species includes the long-chained n-3 polyunsaturated fatty acids (LC n-3 PUFAs) which have been shown to have beneficial effects on cardiovascular diseases and other inflammatory-type diseases [4]. Proteins from microalgae can have balanced amino-acid profiles and good technical functionality [3,5,6], making them good candidates as functional food or feed ingredients. However, most of the microalgae grown on commercial scales are not consumed by humans or terrestrial animals directly.…”

Section: Introductionmentioning

confidence: 99%

pH-shift processing of Nannochloropsis oculata microalgal biomass to obtain a protein-enriched food or feed ingredient

2015

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Keywords:Microalgae Nannochloropsis Food Acid/alkaline solubilization and precipitation Protein n-3 fatty acids Fractionation of plant and animal raw materials by pH-shift processing has been widely applied to purify proteins. The principle is to solubilize proteins at high or low pH, removing debris and precipitating the proteins near their isoelectric point. We here describe the pH-shift process on commercially available Nannochloropsis oculata. The partitioning of major nutrients into the various fractions of the process was studied. Proteins were found to exhibit maximal solubility between pH 7 and 10, with a minimal solubility below pH 4. Two process versions were investigated in this study, with solubilization at either pH 7 (native pH) or 10; both versions were precipitated at pH 3. Up to 85% of both the protein and total fatty acids were recovered in the final product, compared to the initial algal slurry. Protein, total fatty acids and carbohydrates were concentrated in the final product, while the ash content was lower compared to the starting material. From a processing point of view, solubilization of Nannochloropsis at native pH was found to be preferable, since less chemicals were consumed compared to high-pH solubilization. Owing to its content of protein and (total) fatty acids (23 and 12% of dry weight, respectively), the latter enriched in eicosapentaenoic acid (EPA), the product of the pH-shift process has potential as a functional food ingredient.

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Section: Introductionmentioning

confidence: 99%

pH-shift processing of Nannochloropsis oculata microalgal biomass to obtain a protein-enriched food or feed ingredient

2015

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“…Microbial glycolipids [99], sophorolipids [100,101], and lipopeptides [102,103] have also been reported as powerful bio-surfactants [104]. In addition, certain types of proteins [105,106] and polysaccharides [107] can also act as emulsifiers.…”

Section: Emulsion Formationmentioning

confidence: 99%

Lipid recovery from wet oleaginous microbial biomass for biofuel production: A critical review

et al. 2016

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h i g h l i g h t sChallenges in industrial lipid extraction processes were illustrated. Lipid recovery from wet biomass was critically reviewed in the context of biofuel productions. Cell wall disruption technologies were critically reviewed and compared. a b s t r a c tBiological lipids derived from oleaginous microorganisms are promising precursors for renewable biofuel productions. Direct lipid extraction from wet cell-biomass is favored because it eliminates the need for costly dehydration. However, the development of a practical and scalable process for extracting lipids from wet cell-biomass is far from ready to be commercialized, instead, requiring intensive research and development to understand the lipid accessibility, mechanisms in mass transfer and establish robust lipid extraction approaches that are practical for industrial applications. This paper aims to present a critical review on lipid recovery in the context of biofuel productions with special attention to cell disruption and lipid mass transfer to support extraction from wet biomass.

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“…Indeed they have the ability to maintain some properties especially to enhance the solubility in a wide range of pH conditions where functional agents from plants failed. They also displayed promising emulsifying properties (Gerde et al, 2013;Schwenzfeier et al, 2013;Ursu et al, 2014). Regrettably, H. pluvialis proteins functionality has not yet been studied.…”

Section: Introductionmentioning

confidence: 99%

“…Since carbohydrates could modify the techno-functional properties of microalgae protein extracts(Schwenzfeier et al, 2013), it seemed important to verify their influence on emulsifying properties of a water-soluble matrix. In the native supernatant, the sugars to proteins ratio is estimated at 1.4.…”

mentioning

confidence: 99%

Haematococcus pluvialis soluble proteins: Extraction, characterization, concentration/fractionation and emulsifying properties

Ursu

Laroche

et al. 2016

Bioresource Technology

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Emulsion properties of algae soluble protein isolate from Tetraselmis sp.

Cited by 83 publications

References 25 publications

pH-shift processing of Nannochloropsis oculata microalgal biomass to obtain a protein-enriched food or feed ingredient

pH-shift processing of Nannochloropsis oculata microalgal biomass to obtain a protein-enriched food or feed ingredient

Lipid recovery from wet oleaginous microbial biomass for biofuel production: A critical review

Haematococcus pluvialis soluble proteins: Extraction, characterization, concentration/fractionation and emulsifying properties

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