Potential of using Daphnia magna (crustacea) developing in an aerated waste stabilisation pond as a commercial source of chitin

Cauchie, Henry‐Michel; Jaspar-Versali, Marie-France; Hoffmann, Lucien; Thomé, Jean-Pierre

doi:10.1016/s0044-8486(01)00674-3

Cited by 16 publications

(7 citation statements)

References 11 publications

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“…Anyway, hydrolysis under acidic pH led to hydrolysates richer in minerals (33% and 41% respectively for Novozym 37020 and Pepsin) while proteolysis under alkaline conditions led to a lower level of minerals (24% and 29% respectively for Protex 6L and Delvolase). Such results are expected as it is well known that demineralisation of shrimp carapace occurs at low pH and this is the basis of the chitin extraction by chemical treatments (Cauchie, Jaspar-Versali, Hoffmann & Thomé, 2002;Paulino, Simionato, Garcia & Nozaki, 2006;Pillai, Paul & Sharma, 2009;Sagheer, Al-Sughayer, Muslim & Elsabee, 2009;Yen, Yang & Mau, 2009) or by fermentation process (Bhaskar et al, 2007;Cira et al, 2002;Jung, Kuk, Kim & Park, 2005;Pacheco et al, 2009). In addition, low pH increases the solubility of insoluble salt of Calcium (Jung & Kim, 2007).…”

Section: Proximate Compositionmentioning

confidence: 73%

Proteolysis of shrimp by-products (Peaneus monodon) from Madagascar Proteólisis de derivados de langostino (Peaneus monodon) de Madagascar

Randriamahatody

Sylla

Nguen

et al. 2011

CyTA - Journal of Food

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Section: Proximate Compositionmentioning

confidence: 73%

Proteolysis of shrimp by-products (Peaneus monodon) from Madagascar Proteólisis de derivados de langostino (Peaneus monodon) de Madagascar

Randriamahatody

Sylla

Nguen

et al. 2011

CyTA - Journal of Food

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“…The powder obtained was suspended in Milli-Q water and sequentially washed three times with alternating centrifugation and supernatant aspiration to keep only the particulate material. The chitin content of intact daphnia has been estimated at 7%, whereas the chitin content of the carapaces has been estimated at 18% (Cauchie et al 2002). The chitin content of the prepared particulate daphnia material should fall within this range.…”

Section: Methodsmentioning

confidence: 99%

Uncoupling of chitinase activity and uptake of hydrolysis products in freshwater bacterioplankton

Beier

Bertilsson

2011

Limnology & Oceanography

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We investigated to what extent chitinolytic bacteria subsidize bacterial populations that do not produce chitinolytic enzymes but still use the products of chitin hydrolysis. Applying single-cell techniques to untreated and chitin-enriched lake water, we show that the number of planktonic cells taking up chitin hydrolysis products by far exceeds the number of cells expressing chitinases. Flavobacteria, Actinobacteria, and specifically members of the abundant and ubiquitous freshwater Ac1 cluster of the Actinobacteria, increased in abundance and were enriched in response to the chitin amendment. Flavobacteria were frequently observed in dense clusters on chitin particles, suggesting that they are actively involved in the hydrolysis and solubilization of chitin. In contrast, Actinobacteria were exclusively planktonic. We propose that planktonic Actinobacteria contain commensals specialized in the uptake of small hydrolysis products without expressing or possibly even possessing the machinery for chitin hydrolysis. More research is needed to assess the importance of such ''cheater'' substrate acquisition strategies in the turnover and degradation of polymeric organic matter in aquatic ecosystems.

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“…We consider that these studies have a potential in the future in order to optimize wastewater treatment and to increase the output from these plants. In addition to generating a harvest of zooplankton for fish larvae and lowering nutrients such as nitrogen and phosphorus, Moina , like Daphnia 24 can also be a source of chitin for the pharmaceutical industry. Algal growth in wastewater can also reduce the load of heavy metals due to the formation of metallothioneins and phytochelatins 25.…”

Section: Discussionmentioning

confidence: 99%

Growth of Plankton (Scenedesmus acutus (Chlorophyceae) and Moina macracopa (Cladocera)) on Domestic Wastewater

Nandini

Alonso-Soto

2012

CLEAN Soil Air Water

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Research ArticleGrowth of Plankton (Scenedesmus acutus (Chlorophyceae) and Moina macracopa (Cladocera)) on Domestic WastewaterThe population growth of the freshwater chlorophyte, Scenedesmus acutus and the cladoceran Moina macrocopa cultured in the laboratory and in microcosms of a wastewater treatment plant was studied. S. acutus was cultured in a defined algal medium and mixed with wastewater. On diets of S. acutus cultured using Bold medium or a mixture with wastewater, the peak densities of M. macrocopa were 6-7 ind. mL À1 , while on a diet of algae cultured on wastewater alone the cladoceran density fluctuated around 2 ind. mL À1 . Population growth rates of M. macrocopa, which ranged from 0.3 to 0.4 d À1 , were significantly lower on alga cultured in wastewater alone. The body size structure of M. macrocopa was larger on algae cultured in Bold medium than in wastewater. Peak densities of M. macrocopa were around 700 ind. L À1 when the organic matter in the containers was supplemented with algae but it reached lower densities (400 ind. L À1 ) when cultured on the organic matter in wastewater alone. Our study indicates that the nutrients in the final stages of wastewater treatment can support the growth of both phytoplankton and zooplankton.

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Potential of using Daphnia magna (crustacea) developing in an aerated waste stabilisation pond as a commercial source of chitin

Cited by 16 publications

References 11 publications

Proteolysis of shrimp by-products (Peaneus monodon) from Madagascar Proteólisis de derivados de langostino (Peaneus monodon) de Madagascar

Proteolysis of shrimp by-products (Peaneus monodon) from Madagascar Proteólisis de derivados de langostino (Peaneus monodon) de Madagascar

Uncoupling of chitinase activity and uptake of hydrolysis products in freshwater bacterioplankton

Growth of Plankton (Scenedesmus acutus (Chlorophyceae) and Moina macracopa (Cladocera)) on Domestic Wastewater

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