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Thermoanalytical studies on lobster shell

II. Quantitative analysis

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Abstract

The chemical composition of lobster shells was determined by thermal analysis without previous sample preparation. The humidity and ash content were directly calculated from the TG curve. A correlation between the percentage weight loss is a particular temperature interval and the concentration of chitin and protein in the starting material was found, and based on this new method is proposed for the quantitative determination of both polymers. The residual protein after the deproteinization could be estimated with 0.3% error.

Zusammenfassung

Mittels Thermoanalyse wurde ohne Probenaufbereitung die chemische Zusammensetzung von Hummerpanzern ermittelt. Feuchtigkeits- und Aschegehalt wurden aus der TG-Kurve direkt berechnet. Es konnte ein Zusammenhang zwischen der prozentuellen Massenabnahme in einem bestimmten Temperaturintervall und der Konzentration von Chitin und Protein in der Ausgangssubstanz ermittelt und auf dieser Grundlage ein neues Verfahren zur quantitativen Bestimmung beider Polymere vorgeschlagen werden. Das nach der Deproteinierung verbleibende Protein konnte mit einem relativen Fehler von 0.3 % bestimmt werden.

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References

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Authors and Affiliations

  1. Institute of Fundamental Brain Research, Academy of Sciences of Cuba, Havana, Cuba

    I. Garcia Alonso & D. Oviedo Vega

Authors
  1. I. Garcia Alonso
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  2. D. Oviedo Vega
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Alonso, I.G., Vega, D.O. Thermoanalytical studies on lobster shell. Journal of Thermal Analysis 36, 1347–1354 (1990). https://doi.org/10.1007/BF01914057

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  • DOI: https://doi.org/10.1007/BF01914057

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