Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-26012
Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Biochemical and nutritional evaluation of Chlorella and Auxenochlorella biomasses relevant for food application
Authors: Canelli, Greta
Tarnutzer, Carmen
Carpine, Roberta
Neutsch, Lukas
Bolten, Christoph J.
Dionisi, Fabiola
Mathys, Alexander
et. al: No
DOI: 10.3389/fnut.2020.565996
10.21256/zhaw-26012
Published in: Frontiers in Nutrition
Volume(Issue): 7
Issue: 565996
Issue Date: 2020
Publisher / Ed. Institution: Frontiers Research Foundation
ISSN: 2296-861X
Language: English
Subjects: Auxenochlorella; Chlorella; Bioaccessibility; Digestion; Microalgae; Omega-3-polyunsaturated fatty acids; Protein
Subject (DDC): 664: Food technology
Abstract: Microalgae are a source of potentially healthy and sustainable nutrients. However, the bioaccessibility of these nutrients remains uncertain. In this study, we analyzed the biomass composition of five commercial Chlorella and Auxenochlorella strains, and Chlorella vulgaris heterotrophically cultivated in our laboratory. Protein accounted for 65 ± 3% (w w-1) dry matter (DM) in all biomasses, except for the lab-grown C. vulgaris that contained 20% (w w-1) DM protein. The fatty acids content was comparable and ranged between 7 and 10% (w w-1) DM. Most of the biomasses had a ω6-polyunsaturated fatty acids (PUFAs)/ω3-PUFAs ratio <4, as recommended by nutritional experts. A recently published harmonized protocol for in vitro digestion was used to evaluate fatty acids and protein bioaccessibilities. Protein bioaccessibility ranged between 60 and 74% for commercial Chlorella and Auxenochlorella biomasses and was 43% for the lab-grown C. vulgaris. Fatty acids bioaccessibility was <7% in commercial biomasses and 19% in the lab-grown C. vulgaris. Taken together, the results show that microalgae are promising sources of bioaccessible protein. The limited fatty acids bioaccessibility indicates the need for alternative upstream and downstream production strategies.
URI: https://digitalcollection.zhaw.ch/handle/11475/26012
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Appears in collections:Publikationen Life Sciences und Facility Management

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Canelli, G., Tarnutzer, C., Carpine, R., Neutsch, L., Bolten, C. J., Dionisi, F., & Mathys, A. (2020). Biochemical and nutritional evaluation of Chlorella and Auxenochlorella biomasses relevant for food application. Frontiers in Nutrition, 7(565996). https://doi.org/10.3389/fnut.2020.565996
Canelli, G. et al. (2020) ‘Biochemical and nutritional evaluation of Chlorella and Auxenochlorella biomasses relevant for food application’, Frontiers in Nutrition, 7(565996). Available at: https://doi.org/10.3389/fnut.2020.565996.
G. Canelli et al., “Biochemical and nutritional evaluation of Chlorella and Auxenochlorella biomasses relevant for food application,” Frontiers in Nutrition, vol. 7, no. 565996, 2020, doi: 10.3389/fnut.2020.565996.
CANELLI, Greta, Carmen TARNUTZER, Roberta CARPINE, Lukas NEUTSCH, Christoph J. BOLTEN, Fabiola DIONISI und Alexander MATHYS, 2020. Biochemical and nutritional evaluation of Chlorella and Auxenochlorella biomasses relevant for food application. Frontiers in Nutrition. 2020. Bd. 7, Nr. 565996. DOI 10.3389/fnut.2020.565996
Canelli, Greta, Carmen Tarnutzer, Roberta Carpine, Lukas Neutsch, Christoph J. Bolten, Fabiola Dionisi, and Alexander Mathys. 2020. “Biochemical and Nutritional Evaluation of Chlorella and Auxenochlorella Biomasses Relevant for Food Application.” Frontiers in Nutrition 7 (565996). https://doi.org/10.3389/fnut.2020.565996.
Canelli, Greta, et al. “Biochemical and Nutritional Evaluation of Chlorella and Auxenochlorella Biomasses Relevant for Food Application.” Frontiers in Nutrition, vol. 7, no. 565996, 2020, https://doi.org/10.3389/fnut.2020.565996.


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