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    Chitin extraction and chitosan production from Chilopoda (Scolopendra cingulata) with identification of physicochemical properties
    (Maik Nauka/Interperiodica/Springer, 2015) Zelencova, Laura; Erdoğan, Sevil; Baran, Talat; Kaya, Murat
    The Chilopoda is found in a broad array of terrestrial habitats from tropical rain forests to deserts and there are more than 8000 species worldwide. Chitin and chitosan were obtained from Scolopendra cingulata for the first time in this study and physico-chemically characterized. The dry weight chitin content of S. cingulata was found to be 8% of body weight, and it produced chitosan yields of 66%. Analyses results revealed that Chilopoda chitin was in the alpha-form. The chitosan derived from Chilopoda chitin has a low molecular weight (2.278 kDa). The surface morphology of chitin from S. cingulata consists of dispersed nanopores and nanofibres.
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    Fluctuation in physicochemical properties of chitins extracted from different body parts of honeybee
    (Elsevier, 2015) Kaya, Murat; Mujtaba, Muhammad; Bulut, Esra; Akyüz, Bahar; Zelencova, Laura; Sofi, Karwan
    It is well known that physicochemical properties of chitin are related with the extraction method. Recently, it was revealed that some physicochemical properties of chitin are also related with taxonomical relationship. For the first time in this study, it was tested how these properties of chitin are affected by different body parts of one organism. The chitins were extracted from five different body parts (head, thorax, abdomen, legs and wings) of honeybee. These chitins were physicochemically characterized and differences among these body parts were identified. Highest chitin content was observed in legs (13.25%) while the lowest from thorax (6.79%). The surface morphologies of the isolated chitin structures from five different body parts were analyzed with SEM, as a result, five different types of surface morphologies were recorded. However, three different types of surface morphologies were observed only in abdomen. Maximum degradation temperatures (DTG(max)) of thorax, abdomen, legs and wings were recorded between 359 and 367 degrees C while DTG(max) value of head chitin was found as 308 degrees C. (C) 2015 Elsevier Ltd. All rights reserved.