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McHugh, Dennis J.; Hernández‐Carmona, Gustavo; Arvizu-Higuera, D.L.; Rodríguez-Montesinos, Y. Elizabeth

doi:10.1023/a:1012532706235

Cited by 36 publications

(9 citation statements)

References 4 publications

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“…Generally, the protocol concerning extraction of alginates is composed of 5 steps: (1) acidification of the seaweeds, (2) alkaline extraction with sodium carbonate (Na 2 CO 3 ), (3) solid/liquid separation, (4) precipitation and (5) drying [5,8,11,37,38]. All these steps were described in details in a series of publications dedicated to the pilot plant scale extraction of alginates from Macrocystis pyrifera: effect of pre-extraction treatments on yield and quality of alginate [5], extraction conditions and methods of separating the alkaline-insoluble residue [39], precipitation, bleaching and conversion of calcium alginate to alginic acid [40] and conversion of alginic acid to sodium alginate, drying and milling [41]. The results of the experiments carried out in a pilot plant presented in the mentioned publications are especially important because they are closer to those that can be expected at an industrial scale [39].…”

Section: Conventional Extraction Of Alginates From Brown Seaweedsmentioning

confidence: 99%

Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review

2019

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In this paper, the current state-of-art of extraction of alginates and the determination of their physico-chemical properties as well as their overall applications focussing on biomedical purposes has been presented. The quality and quantity of the alginate obtained with a variable yield prepared from brown seaweeds as a result of many factors, such as type of algae, extraction methods, chemical modification and others. Alginates are mainly extracted by using conventional alkaline extraction. However, novel extraction techniques such as microwave and ultrasound assisted extractions have gained a lot of interest. The extraction parameters (e.g., temperature and time of extraction) have critical impact on the alginate physiochemical and mechanical properties and thus, their potential applications. By controlling a chemical process makes it possible get various forms of alginates, such as fibres, films, hydrogels or foams. It is important to characterise the obtained alginates in order to their proper applications. This article presents several techniques used for the analysis of alginate properties. These natural polysaccharides are widely used in the commercial production, as a food ingredient, in the pharmaceutical industry due to their antibacterial, anticancer and probiotic properties. Their gelling characteristic and absorbable properties enable using alginates as a wound management material. Moreover, they are also biocompatible, non-toxic and biodegradable, therefore adequate in other biomedical applications.

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Section: Conventional Extraction Of Alginates From Brown Seaweedsmentioning

confidence: 99%

Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review

2019

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“…However, efficient use of marine organisms is still lacking. Due to marine-derived biopolymer diversity and simplicity of the isolation processes [55,56,57], marine biomaterials for 3D bioprinting applications have received rapidly increasing attention. Many marine-derived biomaterials are selected as bioinks in 3D bioprinting (Figure 1B), including not only the widely used alginate, chitosan [10], and carrageenan [58], but also HA, collagen, and gelatin [5,8,55].…”

Section: Marine-derived Biomaterials For 3d Bioprintingmentioning

confidence: 99%

Biomaterials Based on Marine Resources for 3D Bioprinting Applications

et al. 2019

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Three-dimensional (3D) bioprinting has become a flexible tool in regenerative medicine with potential for various applications. Further development of the new 3D bioprinting field lies in suitable bioink materials with satisfied printability, mechanical integrity, and biocompatibility. Natural polymers from marine resources have been attracting increasing attention in recent years, as they are biologically active and abundant when comparing to polymers from other resources. This review focuses on research and applications of marine biomaterials for 3D bioprinting. Special attention is paid to the mechanisms, material requirements, and applications of commonly used 3D bioprinting technologies based on marine-derived resources. Commonly used marine materials for 3D bioprinting including alginate, carrageenan, chitosan, hyaluronic acid, collagen, and gelatin are also discussed, especially in regards to their advantages and applications.

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“…A detailed alginate extraction process, involving multiple steps, was modeled (Fig. 3) based on pilot-scale experiments reported in the literature [20,[23][24][25]. Briefly, macroalgae was first soaked in a formalin solution for 12 h and then washed with acid (HCl).…”

Section: Coproduction Of Alginate and Ethanol In The Macroalgae Biorementioning

confidence: 99%

“…The Na(alg) paste was further dried in a rotary dryer to reduce the moisture content to about 10 wt%. Using this extraction process, an overall yield (i.e., ration between the alginate extracted in the product and the alginate present in the feed, w/w) of 88 % was assumed [25].…”

Section: Coproduction Of Alginate and Ethanol In The Macroalgae Biorementioning

confidence: 99%

An Investigation on the Economic Feasibility of Macroalgae as a Potential Feedstock for Biorefineries

et al. 2015

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Macroalgal biomass has been considered as a prospective feedstock for biofuel production as, among other benefits, it is an abundant source of renewable sugars and its growth does not require arable land, fresh water, or intense care. Successful commercial deployment of macroalgae-based biorefineries, however, depends on their economic viability at industrial scales. A key objective of this study was to carry out a detailed technoeoconomic analysis (TEA) of a macroalgae biorefinery to understand the economic potential and cost drivers of macroalgae as a feedstock for the production of biofuels and biochemicals. Ethanol was used as a representative macroalgae-derived product, given the wealth of public information available to model this option, and the analysis was extended to biomass-derived sugars in order to explore the production of other fermentation-derived chemicals. Sensitivity analysis was performed on various cost drivers, such as macroalgae price, yield, solids loading, and enzyme loading during hydrolysis. With a feedstock price of $100/MT, depending on the maturity of the other key process parameters (i.e., yield, solids loading, and enzyme loading), the minimum ethanol selling price (MESP) was observed to be in the range of $3.6-8.5/gal and reduced to $2.9-7.5/gal with macroalgae priced at $50/MT. For production of chemicals, sugar prices were in the range of ¢21-47/lb or ¢16-40/lb with macroalgae priced at $100/MT and $50/MT, respectively. Given the challenging economics of the macroalgae biorefinery, coproduction of alginate was used to show the importance of multiple revenue sources, though issues regarding market saturation continue to arise when dealing with products of disparate market sizes.

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Cited by 36 publications

References 4 publications

Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review

Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review

Biomaterials Based on Marine Resources for 3D Bioprinting Applications

An Investigation on the Economic Feasibility of Macroalgae as a Potential Feedstock for Biorefineries

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