Rapid and efficient extraction of chitin and chitosan for scale-up production: Effect of process parameters on deacetylation degree and molecular weight

Knidri, Hakima El; Dahmani, Jaouad; Addaou, Abdellah; Laajeb, Ali; Lahsini, Ahmed

doi:10.1016/j.ijbiomac.2019.08.079

Cited by 119 publications

(64 citation statements)

References 33 publications

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“…It is well-known that DDA influences the physical, chemical, and biological properties of CS including electrostatic characteristics, biodegradability, self-aggregation, adsorption properties, and chelating ability of metal ions [ 28 ]. DDA, representing the removal of acetyl group of chitin, mainly determines the content of free amino groups in the polysaccharides, which was affected by crustacean species and preparation process [ 29 ]. Moreover, alkali concentration was also recognized as an important factor to influence DDA value [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

et al. 2020

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In this work, physicochemical, rheological, and antibacterial properties of chitosan (CS) extracted from white shrimp (WS), giant river prawn (GP), and Antarctic krill (AK) were investigated. The results demonstrated that molecular weight (MW) of commercial chitosan (CCS), WSCS, GPCS, and AKCS were 1175.8, 2130.4, 1293.3, and 1109.3 kDa with the degree of deacetylation (DDA) of 73.5, 74.1, 82.1, and 75.9%, respectively. Fourier transform infrared (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscope (SEM) were employed to study the structural differences of CS. Moreover, storage modulus (G′) and loss modulus (G″) of AKCS were lower than that of WSCS and GPCS, respectively, but higher than that of CCS. Minimum inhibitory concentration (MIC) and minimum bacterial concentration (MBC) of CS against Escherichia coli and Staphylococcus aureus were investigated at concentration between 0.0125 and 1 mg/mL. These results highlighted that AKCS with low viscoelastic properties had a potential application in food and pharmaceutical application.

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Section: Resultsmentioning

confidence: 99%

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

et al. 2020

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“…This ecological method dramatically reduces the extraction time of chitosan to few minutes compared to the conventional method that requires several hours. Thus, microwave technology can be a rentable method to scale-up chitosan production [88].…”

Section: Novel Extraction Methods Of Chitin and The Production Of Chimentioning

confidence: 99%

Chitosan Composites in Packaging Industry—Current Trends and Future Challenges

et al. 2020

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Chitosan-based composites play an important role in food packaging applications and can be used either as films or as edible coatings. Due to their high costs and lower performance (i.e., lower barrier against water vapor, thermal, and mechanical properties) when compared to the traditional petroleum-based plastics, the use of such biopolymers in large-scale is still limited. Several approaches of chitosan composites in the packaging industry are emerging to overcome some of the disadvantages of pristine polymers. Thus, this work intends to present the current trends and the future challenges towards production and application of chitosan composites in the food packaging industry.

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“…Many researchers have successfully deacetylated chitin to chitosan using microwave radiation, with the DD reaching 80-95% in a few minutes and the molecular weight greatly decreasing. However, microwave deacetylation still consumes as much NaOH as traditional deacetylation [42][43][44][45]. El Knidri et al [46] were the first to use microwave technology for demineralization and deproteinization.…”

Section: Physical-assisted Pretreatmentmentioning

confidence: 99%

Production of 5-Hydroxymethylfurfural from Chitin Biomass: A Review

Zhou

Shen

et al. 2020

Molecules

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Chitin biomass, a rich renewable resource, is the second most abundant natural polysaccharide after cellulose. Conversion of chitin biomass to high value-added chemicals can play a significant role in alleviating the global energy crisis and environmental pollution. In this review, the recent achievements in converting chitin biomass to high-value chemicals, such as 5-hydroxymethylfurfural (HMF), under different conditions using chitin, chitosan, glucosamine, and N-acetylglucosamine as raw materials are summarized. Related research on pretreatment technology of chitin biomass is also discussed. New approaches for transformation of chitin biomass to HMF are also proposed. This review promotes the development of industrial technologies for degradation of chitin biomass and preparation of HMF. It also provides insight into a sustainable future in terms of renewable resources.

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Rapid and efficient extraction of chitin and chitosan for scale-up production: Effect of process parameters on deacetylation degree and molecular weight

Cited by 119 publications

References 33 publications

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

Insight into Physicochemical, Rheological, and Antibacterial Properties of Chitosan Extracted from Antarctic krill: A Comparative Study

Chitosan Composites in Packaging Industry—Current Trends and Future Challenges

Production of 5-Hydroxymethylfurfural from Chitin Biomass: A Review

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