Sea urchin skeleton: Structure, composition, and application as a template for biomimetic materials

Шапкин, Н. П.; Khal’chenko, I. G.; Панасенко, А. Е.; Drozdov, Anatoly L.

doi:10.1063/1.4989943

Cited by 6 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high calcium levels obtained in this study further strengthen the potential application of sea urchin shells as a natural source of calcium (Politi et al, 2004;Akerina et al, 2015;Cahyono et al, 2019). This is attributed to the presence of calcium carbonate (calcite CaCO3), identified as one of the main substances in shells, and magnesium carbonate (magnesite MgCO3) (Shapkin et al, 2017). Furthermore, both constituents have been identified at the prismatic layer, and are known to occur in the form of calcite and aragonite crystals (Amarowicz et al, 2012).…”

Section: Calcium Levelssupporting

confidence: 73%

Practical application of sea urchin shell flour supplementation as a stimulant moulting in vannamei shrimp

Heriansah

Nursyahran

Nursidi

et al. 2021

Depik

View full text Add to dashboard Cite

The practical application of waste recycling as feed supplement is potentially required by small-scale aquaculturist. Furthermore, some of the flour derived from waste sea urchin shells and in adopted in feed, including Deadema setosum were evaluated to estimate the effect on white shrimp Litopenaeus vannamei moulting. This research required the experimentation of four doses with triplicate supplementation (0, 2, 4, and 6 g 100 g-1 of feed) on shrimps four times daily (12% of body weight) for 35 days test period. The juvenile specimens, characterized by an initial weight of 1.61±0.11 g, were stocked at a density of 12 individuals in a 12 L aquarium. In addition, four compartments were created in each aquarium to facilitate progress observations. The proximate analysis results showed a 53.76±0.27% calcium content in the shell flour, which significantly increased (P0.05) after higher dose supplementation, in the sequential order 18.65±0.13%, 20.04±0.08%, 23.18±0.10%, and 25.04±0.11%. Moreover, the frequency and moulting interval with 4 g doses (16.59%±0.36% day-1 and 5.91±0.18 days-1) were significant (P0.05) and considered the best, compared to 0 g (10.48% ± 0.24% day-1 and 9.97±0.37 days-1), 2 g (13.49%±0.96% day-1 and 8.10±0.29 days-1), and 6 g (13.81%±0.24% day-1 and 7.90±0.06 days-1). In addition, the respective trend pattern for both parameters increased and decreased at 4 g and 6 g, correspondingly. The highest moulting intensity was also obtained with the 4 g doses, at a range of 4 to 6 times, while the lowest (0 g) varied from 3 to 4 times. These sea urchin shell flour was determined to have numerous practical applications as a feed supplement with proven ability to stimulate moulting in vannamei shrimp.Keywords:MoultingCalciumShellSea urchinFeed supplementationVannamei shrimp

show abstract

Section: Calcium Levelssupporting

confidence: 73%

Practical application of sea urchin shell flour supplementation as a stimulant moulting in vannamei shrimp

Heriansah

Nursyahran

Nursidi

et al. 2021

Depik

View full text Add to dashboard Cite

show abstract

“…The sea urchin test, which is an organic-inorganic biocomposite, is of great interest as such a template. As shown in the skeletons of the sea urchins Heterocentrotus mamillatus [22] and Strongylocentrotus intermedius [23], these skeletons are characterized by their complex bicontinuous porous structure, also known as stereome, which often also exhibits controlled gradients of porosity and structural change [24]. At the same time, individual skeletons based on stereomes are single crystals based on calcite containing magnesium [23,25], which indicates the chemical activity of the inorganic base of the sea urchin skeleton when used as a raw material in chemical synthesis.…”

Section: Introductionmentioning

confidence: 97%

Synthesis of Porous Biomimetic Composites: A Sea Urchin Skeleton Used as a Template

et al. 2021

Self Cite

View full text Add to dashboard Cite

The paper presents an original method for the template synthesis of biomimetic porous composites using polyferrophenylsiloxane (PFPS) and the skeleton of the sea urchin Strongylocentrotus intermedius as a structuring template. The study aimed to form an organosilicon base of a composite with an inverted structure relative to the original structure of the sea urchin shell with a period of structure movement of about 20 µm and ceramic composites fabrication with the silicate base with an average pore size distribution of about 10 μm obtained by the reaction of PFPS with the inorganic base of the sea urchin test under conditions of calcination at 1000 °C followed by acid etching. The composition and morphology of the obtained composites were investigated by IR, XRD, XPS, EDX, and SEM techniques and by mercury porosimetry; the parameters of the porous structures depend on the selected methods of their synthesis. The proposed method is of fundamental importance for developing methods for the chemical synthesis of new biomimetics with a unique porosity architecture based on environmentally friendly natural raw materials for a vast practical application.

show abstract

“…Sea urchins should be mentioned as having rich potential for practical use in the obtention of biomimetic products, as they are sources of raw materials for organo–inorganic biocomposites [ 18 , 19 ]. Recently, sea urchins have been used to produce bioceramics for biomedical applications [ 20 , 21 ], including materials with high antibacterial activity [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…Sea urchin skeletons are characterized by a complex bicontinuous porous structure, also known as a mechanical tissue system (stereome). The stereome often exhibits controlled gradients of porosity and structural changes [ 19 ]. At the same time, individual stereome-based skeletons are calcite-based monocrystals containing magnesium.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, individual stereome-based skeletons are calcite-based monocrystals containing magnesium. This indicates that the inorganic base of the sea urchin skeleton is chemically active when used as a raw material in chemical synthesis [ 19 , 36 ]. The strength and other mechanical properties of sea urchin shells and spicules vary with the chemical composition and structural organization of their components [ 31 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silica-Containing Biomimetic Composites Based on Sea Urchin Skeleton and Polycalcium Organyl Silsesquioxane

Shapkin,

Khalchenko,

Drozdov

et al. 2023

Biomimetics

Self Cite

View full text Add to dashboard Cite

The paper presents an original approach to the synthesis of polycalciumorganyl silsesquioxanes through the reaction of polyorganyl silsesquioxanes [RSiO1.5]n (where R is an ethyl and phenyl radical) with sea urchin skeleton under the conditions of mechanochemical activation. The novelty and practical significance of the present study lies in the use of an available natural raw source as a source of calcium ions to initiate the reaction of calcium silicate formation and create a matrix for the formation of a porous inorganic composite framework. The thermal stability of the introduced silicates, i.e., the ability to maintain a porous structure at high temperatures, is key to the production of an ordered porous material. The reaction scheme was proposed to be based on the interaction of calcium carbonate with the siloxane bond. FTIR, XRD, GPC, and TGA were used to study the composition and structure of the obtained materials. The cross-sectional area of the polymer chain and the volumes of the coherent scattering regions of the polymers obtained were calculated from the XRD data. To prepare the composites, the sea urchin skeleton was further modified with polycalciumorganyl silsesquioxanes in a toluene solution. To remove the sea urchin skeleton, the obtained biomimetic composites were treated with hydrochloric acid. The results of the morphological and surface composition studies are reported. The method proposed in the paper could be of fundamental importance for the possibility of obtaining structured porous composite materials for a wide range of practical applications, including for the purpose of creating a composite that may be a promising carrier for targeted delivery of chemotherapy agents.

show abstract

Sea urchin skeleton: Structure, composition, and application as a template for biomimetic materials

Cited by 6 publications

References 11 publications

Practical application of sea urchin shell flour supplementation as a stimulant moulting in vannamei shrimp

Practical application of sea urchin shell flour supplementation as a stimulant moulting in vannamei shrimp

Synthesis of Porous Biomimetic Composites: A Sea Urchin Skeleton Used as a Template

Silica-Containing Biomimetic Composites Based on Sea Urchin Skeleton and Polycalcium Organyl Silsesquioxane

Contact Info

Product

Resources

About