Microalgae starch-based bioplastics: Screening of ten strains and plasticization of unfractionated microalgae by extrusion

Mathiot, Charlie; Ponge, Pauline; Gallard, Benjamin; Sassi, Jean-François; Delrue, Florian; Moigne, Nicolas Le

doi:10.1016/j.carbpol.2018.12.057

Cited by 138 publications

(70 citation statements)

References 48 publications

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“…Since India and China have a high fruit and vegetable production capacity [19], agro-wastes synthesized from fruit and vegetable wastes would be abundant in Asia. Coconut shells and microalgae are abundant in coastal areas and marine environments, respectively [20,35]. Jackfruits and other similar plants grow best in tropical and subtropical climates [20].…”

Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

“…The selection of suitable agro-waste is based on the following primary criteria: (i) starch content; (ii) cellulose and lignin and hemicellulose content (iii) bioavailability and impact on agricultural supply chains and food security (iv) complexity of the synthetic routes and desired material properties; (v) biodegradation [20,35,37,38]. Based on the data presented in Table 2, corn and stalks have the highest cellulose concentration % w/w, which is critical for high strength applications.…”

Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

“…Thick films have better mechanical properties compared to thin films. For example, Chlamydomonas reinhardtii microalgae species yield the highest starch content after 800 h of inoculation [35]. Based on the inoculation experiments, Chlamydomonas reinhardtii microalgae species would be highly preferred as precursors in the development of bio-based polymers compared to other species such as Scenedesmus sp and Chlorella variabilis.…”

Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

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Production of Sustainable and Biodegradable Polymers from Agricultural Waste

2020

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Agro-wastes are derived from diverse sources including grape pomace, tomato pomace, pineapple, orange, and lemon peels, sugarcane bagasse, rice husks, wheat straw, and palm oil fibers, among other affordable and commonly available materials. The carbon-rich precursors are used in the production bio-based polymers through microbial, biopolymer blending, and chemical methods. The Food and Agriculture Organization (FAO) estimates that 20–30% of fruits and vegetables are discarded as waste during post-harvest handling. The development of bio-based polymers is essential, considering the scale of global environmental pollution that is directly linked to the production of synthetic plastics such as polypropylene (PP) and polyethylene (PET). Globally, 400 million tons of synthetic plastics are produced each year, and less than 9% are recycled. The optical, mechanical, and chemical properties such as ultraviolet (UV) absorbance, tensile strength, and water permeability are influenced by the synthetic route. The production of bio-based polymers from renewable sources and microbial synthesis are scalable, facile, and pose a minimal impact on the environment compared to chemical synthesis methods that rely on alkali and acid treatment or co-polymer blending. Despite the development of advanced synthetic methods and the application of biofilms in smart/intelligent food packaging, construction, exclusion nets, and medicine, commercial production is limited by cost, the economics of production, useful life, and biodegradation concerns, and the availability of adequate agro-wastes. New and cost-effective production techniques are critical to facilitate the commercial production of bio-based polymers and the replacement of synthetic polymers.

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Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

Section: Production Of Bio-based Polymers From Renewable Sources and mentioning

confidence: 99%

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Production of Sustainable and Biodegradable Polymers from Agricultural Waste

2020

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“…Different microorganisms, microalgae and cyanobacteria were preselected according to previous experience and the bibliography [18][19][20]. We selected only robust strains suitable for large-scale production under non-optimally controlled conditions ( Table 2).…”

Section: Microorganisms and Culture Mediamentioning

confidence: 99%

Comparative evaluation of microalgae strains for CO2 capture purposes

Sepúlveda

Gómez-Serrano

Bahraoui

et al. 2019

Journal of CO2 Utilization

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In this paper we have compared eleven microalgae/cyanobacteria strains used for the development of a CO 2 capture process. Firstly, we studied the tolerance of the selected strains to the water quality available at the production site. The results confirmed that no toxins were present in the water used; in addition, we confirmed that fertilizers could be utilised as the nutrient source instead of pure chemicals. Secondly, the strains were evaluated in terms of growth rate, biomass productivity and photosynthetic efficiency concluding that Scenedesmus almeriensis, Neochloris oleoabundans and bloom from the River Seine were the most productive, above 1.0 g•L −1 •day −1. Thirdly, we determined the biochemical composition of the biomass with the results showing that most of the strains mainly accumulate carbohydrates in the stationary phase, over 60% d.wt.; the exceptions were Neochloris oleoabundans and Chlorella vulgaris, which accumulate lipids, above 20% d.wt. In any case, the performance of the microalgae strains was better than that of cyanobacteria both in terms of biomass productivity and the biochemical composition; consequently, using these types of microorganisms is recommended. By considering a fixed value for the main biomass components, we concluded that the most promising strains were Scenedesmus almeriensis, Neochloris oleoabundans and bloom from the River Seine, yielding a biomass value above 0.6 €•kg −1 and an economic value higher than 0.7 €•m-3 •day −1. These figures confirm that, in order to obtain profitable CO 2 capture processes and to develop more efficient production systems that reduce current production costs, coupling with wastewater treatment schemes is required.

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“…Unlike synthetic or hydrocarbon-based polymers, bio-based polymers are edible, ecofriendly, easily affordable and available. The development of bio-based lms or coatings from renewable sources, such as polysaccharides (starch, cellulose), proteins (gelatin, keratin), lipids have attracted considerable research efforts in recent times [5][6][7][8]. Protein-based biopolymer are characterized by their safety, biodegradability and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of keratin-starch bio-composite film from chicken feather waste and ginger starch

Oluba

Chibugo

Akpor

et al. 2020

Preprint

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Background: The disposal of chicken feather through burning or burying is not environmentally compliant due to the accompanying release of greenhouse gas and underground water contamination. Thus, the transformation of this bio-waste into a bio-composite film is considered not only sustainable strategy for disposal of these solid wastes but also an attractive alternative to developing an efficient nanostructure biomaterial from renewable bio resource.Methods: In the present study keratin extracted from chicken feather waste in combination with ginger starch were fabricated into a bio-composite film. The fabricated bio-composite films were characterized, using different analytical techniques.Results: The physicochemical characteristics of ginger starch showed a moisture content of 33.8%, pH of 6.21, amylose and amylopectin contents of 39.1% and 60.9%, respectively. The hydration capacity of the starch was 132.2% while its gelatinization temperature was 65.7 oC. Physical attributes of the bio-composite film, such as surface smoothness and tensile stress increased significantly (p < 0.05) with increasing keratin content, while transparency, solubility significantly (p < 0.05) decreased with increasing keratin level. The various blends of the bio-composite films decayed by over 50% of the original mass after 12 days of complete burial in soil.Conclusion: Based on the results obtained in this study, the addition of keratin to starch bio-composite showed improvement in mechanical properties, such as tensile stress and surface smoothness. The bio-composite film exhibited appropriate stability in water, although future study showed be carried out to evaluate its thermal stability. Nonetheless, the fabricated keratin-starch bio-composite showed desirable characteristics that could be optimized for industrial applications.

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Microalgae starch-based bioplastics: Screening of ten strains and plasticization of unfractionated microalgae by extrusion

Cited by 138 publications

References 48 publications

Production of Sustainable and Biodegradable Polymers from Agricultural Waste

Production of Sustainable and Biodegradable Polymers from Agricultural Waste

Comparative evaluation of microalgae strains for CO2 capture purposes

Fabrication and characterization of keratin-starch bio-composite film from chicken feather waste and ginger starch

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