Deep eutectic solvent-based extraction and fabrication of chitin films from crustacean waste

Saravana, Periaswamy Sivagnanam; Ho, Truc Cong; Chae, Sol-Ji; Cho, Yeon-Jin; Park, Jin-Seok; Lee, Hee-Jeong; Chun, Byung‐Soo

doi:10.1016/j.carbpol.2018.05.018

Cited by 142 publications

(62 citation statements)

References 37 publications

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“…Results (Table 2) showed that chitin polymorphism and its crystallinity are affected by the preparation procedure resulting in the molecular weight decrease of obtained polymers. The resulted generation of amorphous polymer structure can be due to the cleavage of intra and intermolecular hydrogen bonds [19][20][21][22]33]. The highest crystallinity index was obtained with CCLA-70 as well the highest degree of deacetylation, indicating that the degree of crystallinity depends on the chitin degree of deacetylation.…”

Section: Fractionation Of Shrimp Shell Biomass Into Valuable Componenmentioning

confidence: 99%

“…To synthesize NADES, only natural based sources need to be used [18]. The use of DES in the extraction and/or dissolution of chitin have been proposed by several authors [18][19][20][21][22][23][24]. In one hand, authors of [17] reported the enhanced chitin dissolution by DES using conventional heating, heating under microwave irradiation and heating assisted by ultrasonication under an inert atmosphere.…”

Section: Introductionmentioning

confidence: 99%

“…In one hand, authors of [17] reported the enhanced chitin dissolution by DES using conventional heating, heating under microwave irradiation and heating assisted by ultrasonication under an inert atmosphere. On the other hand, authors of [19] and [22] proposed the direct extraction of chitin from lobster and shrimp (Marsupenaeus japonicas) shells using DES composed from choline chloride as a hydrogen bond acceptor and urea, thiourea, glycerol and malonic acid as hydrogen bond donors at high temperatures except for the last one where 50°C was used, yet there was no recycling of the solvents. This was later improved in [20], where the authors performed a direct conversion of shrimp shells to O-acylated chitin using natural deep eutectic solvents (NADES) as a reaction medium, while also being able to remove the minerals and proteins simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Crustacean shell bio-refining to chitin by natural deep eutectic solvents

Bradić

Novak

Likozar

2019

Green Processing and Synthesis

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AbstractThis study provides a complete evaluation of a sustainable zero-waste process for the recovery of added value biomaterials from the abundant shrimp shell biomass waste using natural deep eutectic solvents (NADES). The process parameters for the fractionation of α-chitin, minerals and protein was followed using on-line measurements. Furthermore, the quantitative analysis of isolated chitin, minerals and solvent waste streams were examined. The dominant fractionation mechanisms are explained through the analysis of the liquid and solid fractions. Four of the most promising, and commercially available, NADES consisting on mixtures of Choline Chloride-Lactic Acid (CCLA), Choline Chloride-Malonic Acid (CCMA), Choline Chloride-Urea (CCUR) and Choline Chloride-Citric Acid (CCCA), were tested. The highest chitin extraction yield obtained was < 90% using CCLA, leading to purity higher than 98%. Moreover, it is possible to recycle this particular NADES several times, while having no loss in the shrimp shell fractionation capability.

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Section: Fractionation Of Shrimp Shell Biomass Into Valuable Componenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crustacean shell bio-refining to chitin by natural deep eutectic solvents

Bradić

Novak

Likozar

2019

Green Processing and Synthesis

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“…In the following studies, accordingly, we used AMIMBr solutions as media for facile acylation and self-assembled regeneration of chitin to successfully produce chitin esters and nanochitins [22][23][24][25][26]. The presence of Recently, some deep eutectic solvents (DESs) as analogs of ILs, mainly composed of choline chloride, have also been found to dissolve chitin [27][28][29][30][31][32][33][34][35]. DESs are fluids formed by adequate mixtures of hydrogen bond acceptors (HBAs) and hydrogen bond donors (HBDs), which are capable of self-association through hydrogen bonding interactions to form eutectics with lower melting points (mps) in comparison to each individual component [36].…”

Section: Introductionmentioning

confidence: 99%

Dissolution of Chitin in Deep Eutectic Solvents Composed of Imidazolium Ionic Liquids and Thiourea

2019

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Chitin is an abundant organic resource but shows poor solubility, leading to difficulty in utilization as materials. We have already reported that an ionic liquid (IL), 1-allyl-3-methylimidazolium bromide, dissolves chitin at concentrations up to ca. 5 wt %. However, the color of the resulting solution is blackened, mainly owing to the presence of bromide. On the other hand, some deep eutectic solvents (DESs) have been already reported to dissolve chitin. In this study, we found that DESs composed of imidazolium ILs and thiourea dissolved chitin without obvious coloring. DESs are systems formed from eutectic mixtures of hydrogen bond accepters and donors. We first prepared DESs by heating mixtures of imidazolium ILs with thiourea at 100 °C for 30 min with stirring. Predetermined amounts of chitin were then added to the DESs, and for the dissolution, the mixtures were left standing at room temperature for 24 h, followed by heating at 100 °C for 24 h with stirring. The dissolution processes were evaluated by CCD camera views, which revealed in most cases the dissolution of chitin at 2–5 wt % concentrations with the present DESs.

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“…Chitin, with the chemical structure of β-(1-4)-linked 2-acetamido-2-deoxy-d-glucopyranose units, is the most abundant nitrogen-bearing compound in nature and the second most abundant biopolymer on earth after cellulose. Chitin can be achieved from the exoskeletons of arthropods such as crabs, shrimps, lobsters, prawns, or the cell walls of some microorganisms and some fungi [ 1 , 2 , 3 , 4 , 5 ]. As a natural renewable resource, chitin possesses advantages in unique physicochemical characteristics and bioactivities expressed as its biodegradability, biocompatibility, and non-toxicity property [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Chitin Derivatives Bearing Amino Groups and Evaluation of Their Antifungal Activity

Zhang

Luan

et al. 2018

Marine Drugs

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Chemical modification is one of the most effective methods to improve the biological activity of chitin. In the current study, we modified C3-OH and C6-OH of chitin (CT) and successfully synthesized 6-amino-chitin (NCT) and 3,6-diamino-chitin (DNCT) through a series of chemical reactions. The structure of NCT and DNCT were characterized by elemental analyses, FT-IR, 13C NMR, XRD, and SEM. The inhibitory effects of CT, NCT, and DNCT against six kinds of phytopathogen (F. oxysporum f. sp. cucumerium, B. cinerea, C. lagenarium, P. asparagi, F. oxysporum f. niveum, and G. zeae) were evaluated using disk diffusion method in vitro. Meanwhile, carbendazim and amphotericin B were used as positive controls. Results revealed that 6-amino-chitin (NCT) and 3,6-diamino-chitin (DNCT) showed improved antifungal properties compared with pristine chitin. Moreover, DNCT exhibited the better antifungal property than NCT. Especially, while the inhibition zone diameters of NCT are ranged from 11.2 to 16.3 mm, DNCT are about 11.4–20.4 mm. These data demonstrated that the introduction of amino group into chitin derivatives could be key to increasing the antifungal activity of such compounds, and the greater the number of amino groups in the chitin derivatives, the better their antifungal activity was.

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Deep eutectic solvent-based extraction and fabrication of chitin films from crustacean waste

Cited by 142 publications

References 37 publications

Crustacean shell bio-refining to chitin by natural deep eutectic solvents

Crustacean shell bio-refining to chitin by natural deep eutectic solvents

Dissolution of Chitin in Deep Eutectic Solvents Composed of Imidazolium Ionic Liquids and Thiourea

Synthesis of Novel Chitin Derivatives Bearing Amino Groups and Evaluation of Their Antifungal Activity

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