Isolation and characterization of chitosan from different local insects in Egypt

Marei, Narguess H.; El-Samie, Emtithal Abd; Salah, Taher A.; Saad, Gamal R.; Elwahy, Ahmed H. M.

doi:10.1016/j.ijbiomac.2015.10.024

Cited by 132 publications

(101 citation statements)

References 54 publications

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“…Chitin yields range from 10 to 30% on a dry weight basis, depending on the source and preparation method (Kandra, Challa, & Jyothi, ). Our results showed a lower percentage chitin yield from shrimp waste from the Marmara Sea than that reported in the literature (Abdou, Nagy, & Elsabee, ; Mohammed et al, ; Sagheer et al, ), although our results were in agreement with those of Özbay, Baştürk, and Sungur (), Kaya et al (), and Marei et al ().…”

Section: Resultssupporting

confidence: 90%

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Optimization of chitin and chitosan production from shrimp wastes and characterization

Tokatlı

Demirdöven

2017

J Food Process Preserv

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The objectives of this study were to optimize and evaluate chitin and chitosan production conditions from shrimp waste using the response surface methodology and to characterize obtained chitosans. The effects of demineralization and deproteinization conditions on chitin production and deacetylation conditions on chitosan production were investigated. Optimum conditions for chitin production were observed at using 0.73 mol/L hydrochloric acid for 132.61 min at room temperature for demineralization and 0.95 mol/L sodium hydroxide for 75.65 min at 60.49 °C for deproteinization. The obtained chitin was used to optimize chitosan production and two different chitosans were defined as chitosan‐1 and chitosan‐2. Chitosan‐1 was obtained by deacetylation with 40% sodium hydroxide at 120 °C for 300 min, and Chitosan‐2 was obtained by deacetylation with 50% sodium hydroxide at 100 °C for 720 min. The obtained chitosans were characterized by their degree of deacetylation, molecular weight, viscosity, mineral content, whiteness index, and scanning electron microscope micrographs. Practical applications Chitosan, carbohydrate‐based polymer, is derived from crustacean shells. The extraction process of chitin and chitosan from shrimp wastes sourced of different sources needs optimization to obtain high yield chitosan without impurity. Although the production of chitosan by chemical method has been studied earlier, this is the first report on extraction of chitin and chitosan from shrimp waste from the Marmara Sea in Turkey. Shrimp waste from Marmara Sea in Turkey, which has no economic value, can be successfully converted into chitosan. The effective utilization of these wastes would not only eliminate waste but also contribute to the economy as value‐added products.

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Section: Resultssupporting

confidence: 90%

“…The working condition intervals (solution concentration, time, and temperature) for deacetylation stage were determined based on the minimum and maximum values from literature data (Abdel‐Rahman et al, ; Kumari & Rath, ; Lertsutthiwong et al, ; Marei, El‐Samie, Salah, Saad, & Elwahy, ; Mohammed et al, ; Yen et al, ).…”

Section: Methodsmentioning

confidence: 99%

Optimization of chitin and chitosan production from shrimp wastes and characterization

Tokatlı

Demirdöven

2017

J Food Process Preserv

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“…Chitin is the second most diverse and abundantly founded natural biopolymer on the planet (Marei et al 2016). Chitin exists in skeletal structures of various creatures including algae, fungi, Anthozoa (corals), Porifera (marine and freshwater sponges), Annelida, Mollusca, Nematode and arthropods (Insecta, Crustacea, and Arachnida) (Southward et al 2005;Ehrlich et al 2007;Rădulescu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Extraction of high thermally stable and nanofibrous chitin from Cicada (Cicadoidea)

Mol

Kaya

Mujtaba

et al. 2018

Entomological Research

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Due to the increasing interest in natural biopolymers including chitin, the exploitation of economic and easily accessible chitin sources with good physicochemical properties is nowadays required. In view of this fact, in the current study chitin was extracted and physicochemically characterized from six Cicadas (Hemiptera: Homoptera: Cicadoidea) species collected from Mediterranean region of Turkey (2014–15). Chitin was extracted using a classic extraction method that includes acid and base treatment. TGA results revealed a remarkable increase (410–412°C) for all the six Cicada species compared to other chitin samples extracted from various sources. For all of the six selected species the chitin contents on the dry basis were determined as 6.7% for Cicadatra atra, 5.51% for C. hyalina, 8.84% for C. platyptera, 4.97% for Cicada lodosi, 6.49% for C. mordoganensis, and 5.88% for Cicadetta tibialis. The surface morphology of chitin isolates from Cicada species was observed to consist of nanofibers and nanopores.

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“…A variety of isolation techniques have been used up until now, depending on the source and corresponding chitin ratio. The source and origin mainly determine the crystallinity, purity, and polymer chain arrangement . Up until now, waste crustacean biomass has been the preferred source for chitin isolation; however, techniques to extract chitin from other sources such as sponges, corals, mushrooms, insects, and worms are emerging.…”

Section: Chitin Biomassmentioning

confidence: 99%

Natural Polymers from Biomass Resources as Feedstocks for Thermoplastic Materials

Müller

Zollfrank

Schmid

2019

Macro Materials & Eng

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With the objective of a more sustainable circular economy, one long‐term goal is the utilization of renewable resources as feedstock for the production of polymer‐based materials. In order to successfully process such materials using existing industrial‐scale technologies or even recycling processes, the natural polymers must have thermoplastic properties. With only a few exceptions, natural polymers are not thermoplastic. However, chemical and physical modification techniques are able to induce thermoplasticity in natural polymers from biomass resources such as cellulose, lignin, and chitin. Modification techniques focus on masking the hydroxyl groups to disrupt dense hydrogen bonding and so enable polymer chain mobility upon heating. The introduction of long alkyl chains into the polymer backbone effectively improves the thermoplastic processing of natural polymers. With regard to polymer blending, chemical grafting and graft copolymerization are powerful tools for enhancing compatibility. For both chemical and physical modification, solvents such as ionic liquids and deep eutectic solvents are currently being explored for biomass and fiber processing and show promise for the future development of thermoplastic biopolymers. This review describes possible modifications, potential processing difficulties, and gives a summary of relevant studies described in the scientific literature.

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Isolation and characterization of chitosan from different local insects in Egypt

Cited by 132 publications

References 54 publications

Optimization of chitin and chitosan production from shrimp wastes and characterization

Optimization of chitin and chitosan production from shrimp wastes and characterization

Extraction of high thermally stable and nanofibrous chitin from Cicada (Cicadoidea)

Natural Polymers from Biomass Resources as Feedstocks for Thermoplastic Materials

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