Search

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao is the property of Basic Sciences Journal of Textile Universities and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

微课是信息化教学的重要辅助方式之一，在医学课程教学中有着广泛应用。但是，目前教学中所用的微课质量参差不齐，教学效果并不均一。为提高微课制作质量，最大程度发挥辅助教学效果，本文分析了当下微课制作的现状及存在问题，并结合此前制作的微课，分析优质微课制作的要素和重点，为快速、有效搭建并制作优质微课提供借鉴。 [ABSTRACT FROM AUTHOR]

随着中国国际影响力的不断提高,来中国医学的留学生逐年增加,医学留学生教育已经成为中国医学教育的重要组成部分。临床实习是医学生从学生向医生角色转换的重要步骤。该文总结该院在医学留学生临床实习工作中的带教体会。 [ABSTRACT FROM AUTHOR]

Objective: To analyze the clinical characteristics, treatment methods and cause of death of aluminium phosphide poisoning in children. Methods: The clinical data of 55 cases of children with accidental inhalation of aluminum phosphide poisoning in our hospital from 2014 to 2018 (31 cases of mild poisoning and 14 cases of severe poisoning ) were analyzed, including the age, gender, onset seasons, poisoning inhalation time, visit time and examination results. Results: In the 55 cases, 10 cases died. The average inhalation time of mild poisoning was 25.1 hours, of which the severe poisoning was 185.4 hours, and the average visit time were 14.6 hours and 38.5 hours separately. The clinical manifestations were nausea and vomiting in 55 cases (100%), dizziness and pale in 14 cases (25%), palpitation in 16 cases (29%), respiratory failure in 14 cases (25%), severe arrhythmia in 8 cases (14.5%), hypotension and cardiogenic shock in 10 cases (18%). Electrocardiogram examination were analyzed: 1 case of supraventricular tachycardia, 4 cases of ventricular tachycardia, 1 case of grade 2 II atrioventricular block, 5 cases of sinus arrhythmia, and 26 cases of sinus tachycardia. Laboratory results followed: myocardial enzymes were elevated in 19 cases (34.5%), liver function were abnormal in 12 cases (21.8%), 6 cases (10.9%) had abnormal renal function and 14 cases (25%) had metabolic acidosis. Treatment is mainly symptomatic support treatment. All of them were severe poisoned and died from circulatory failure. Conclusion: The mortality of aluminium phosphide poisoning is very high and the cause of death is circulatory failure. There are no special detoxification drugs now, so it is important to diagnose early and treatment comprehensively. [ABSTRACT FROM AUTHOR]

OBJECTIVE: To compare the efficacy and safety between beclomethasone dipropionate(BDP) and mesalazine in enema treatment of active ulcerative colitis. METHODS: Cohort study was conducted on 102 patients with mild or moderate active ulcerative colitis in 2018, which were divided into BDP group(52 cases, given BDP for enema) and mesalazine group(50 cases, given mesalazine for enema) via random number table. After 8-week treatment, differences in disease activity index(DAI) scores, clinical efficacy and safety between two groups were compared. RESULTS: After treatment, the DAI scores of both groups were significantly lower than those of before treatment, with statistically significant difference(P<0.05); the improvement rate of BDP group was 82.69%(95%CI=0.75-0.92), and that of mesalazine group was 80.00%(95%CI=0.72-0.90), the difference had no statistical significance(P>0.05); the remission rate of BDP group was 34.00%(95%CI=0.25-0.54), and that of mesalazine group was 32.00%(95%CI=0.34-0.60), the difference had no statistical significance(P>0.05). Both topical treatment regimens were well tolerated; compared with the baseline, no changes in cortisol levels in morning were observed in BDP group. CONCLUSIONS: The efficacy of BDP in enema treatment of active ulcerative colitis is comparable to that of mesalazine, with good safety, which has no effects on function of the hypothalamic-pituitary-adrenal axis. [ABSTRACT FROM AUTHOR]

Copyright of Nursing of Integrated Traditional Chinese & Western Medicine is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

目的 探讨溴隐亭不同给药途径治疗女性高泌乳素血症的临床效果。方法 选择该院妇产科2016年1月至 2018年1月收治的确诊为高泌乳素血症患者90例，将其分为对照组和观察组，每组45例。对照组采用溴隐亭口服治疗，观察组 采用溴隐亭阴道给药，2组均治疗3个月。比较2组患者治疗前，治疗后1、2、3个月血清泌乳素水平，以及治疗后临床症状及妊娠 率。结果 2组患者治疗后1、2、3个月血清泌乳素水平均低于治疗前，差异均有统计学意义（P<0.05);但治疗后2组患者间血 清泌乳素水平比较，差异无统计学意义（P>0. 05)。治疗后观察组月经失调、闭经和泌乳发生率均显著低于对照组，妊娠率高于 对照组，差异均有统计学意义（P<0.05)。结论 2种给药途径均能够显著降低患者血清泌乳素水平，但阴道给药能更好地改善 临床症状，提高妊娠率。 [ABSTRACT FROM AUTHOR]

[Objectives] The aim of this paper is to understand the subcellular localization of NbGRX1(Nicotiana benthamiana glutaredoxin 1) and its role in plant response to drought stress. [Methods] To investigate the subcellular localization of NbGRX1 protein in plant cell, the NbGRX1 protein was fused to the C-terminus of GFP(green fluorescent protein) and the construct was transiently expressed in N. benthamiana leaf epidermal cells and then monitored by capturing GFP fluorescence. To uncover the function of the NbGRX1 gene in response to drough stress, NbGRX1 gene silencing vector was constructed based on the geminivirus satellite silencing vector and then introduced into Agrobacterium tumefaciens strain EHA105. NbGRX1-silenced and non-silenced control plants were imposed by withholding water in a growth chamber until wilted leaves were observed on all the NbGRX1-silenced plants and relative water content(RWC) in the leaves of each plant was also estimated. Next, the coding sequence of NbGRX1 was introduced into Arabidopsis under the control of the cauliflower mosaic virus(CaMV) 35S promoter. Independent homozygous lines with a single copy of NbGRX1 were allowed to grow for 3 generations for further studies. For drought assay, plants were imposed by withholding water in a growth chamber until a lethal effect of dehydration was observed on all of the control plants. Plants treated with water were regarded as the mock. [Results] The results suggested that NbGRX1 protein was localized in both nucleus and cytoplasm. Virus-induced gene silencing of NbGRX1 in tobacco led to increased sensitivity to drought stress with easily becoming yellowing and wilt with decreased relative water content, suggesting that NbGRX1 was required for plant resistance to drought stress. The coding sequence of NbGRX1 was introduced into Arabidopsis and two independent homozygous lines(N1, N2) with a single copy of NbGRX1 were allowed to grow for 3 generations for further studies. Over-expression of NbGRX1 in Arabidopsis plants enhanced the lines in their tolerance to drought in soil-grown conditions, conforming that NbGRX1 plays important role in plant resistance to drought stress. [Conclusions] Our research demonstrated that NbGRX1 can improve plant resistance to drought stress. [ABSTRACT FROM AUTHOR]

Copyright of Guihaia is the property of Guihaia Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Capital Institute of Physical Education is the property of Shoudu Tiyu Xueyuan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Earth Sciences & Environment is the property of Journal of Earth Sciences & Environment and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tianjin Medical Journal is the property of Tianjin Medical Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

High pulsed electric field (HPEF) pretreatment is helpful to induce breakdown and displacement effect in cell of fruits and vegetables, which is useful to improve drying speed. We should study the effect of HPEF on the physical properties of fruits and vegetables, which puts the base for optimizing the parameters and mechanism analysis. In this study, 2 kinds of fruits and 2 kinds of vegetables, apple, pear, potato and radish were chosen as raw material. The moisture contents of apple, pear, potato and radish were approximately 86.89%, 89.46%, 78.35% and 93.61%, respectively. Immediately before measuring, the fruits and vegetables were washed and peeled by hand, and then cut into 13 mm diameter and 5 mm thickness using a cork borer. High pulsed electric field generator was used for the HPEF pretreatment of the fruits and vegetables, and the parameters were set as follows: 1) 1 000 V/cm pulse strength, 60 ?s pulse length, pulse number of 15, 2) 1 250 V/cm pulse strength, 90 ?s pulse length, pulse number of 30, and 3) 1 500 V/cm pulse strength, 120 ?s pulse length, pulse number of 45. After HPEF pretreatment, the dynamic viscoelasticity behavior was performed with DMA testing machine using compression platen (diameter of 15 mm). The linear viscoelastic range (LVR) was determined through stress sweeps. A constant amplitude of 10 μm was then chosen (common to the LVR of all samples) to obtain the mechanical spectra as frequency sweeps from 1 to 100 Hz at 25 ℃ and temperature sweeps from 25 to 90 ℃ at 10 Hz. The test and analysis of dynamic viscoelastic of fruits and vegetables were performed by TA Universal Analysis software. Analysis of variance was applied to the data. In order to study the differences among samples, all the data were analyzed with the use of SAS (statistical analysis system) software (version of 9.2). The microstructure analysis was performed by scanning electron microscopy (SEM) on apple samples with the 3 sets of pretreatment parameters, and untreated samples. The storage modulus, loss modulus and loss tangent on different HPEF pretreatment parameters and different oscillation frequency were plotted to characterize the viscoelastic behavior. The theoretical analysis about dynamic viscoelastic mechanics was presented. Results showed that all samples showed a slight linear increase in storage modulus, loss modulus and loss tangent as frequency diminished. A statistically significant difference in storage modulus, loss modulus and loss tangent between different varieties was confirmed. For apple samples, the HPEF pretreatment led to the decrease of storage modulus and loss modulus by 72.36% and 78.09%, respectively. It was primarily attributed to the changes of the cell structure and the intracellular space of the cell as revealed by the SEM. The same decreasing tendency of storage modulus and loss modulus with the increasing of HPEF parameters was observed for potatoes. However, the radish showed a contrary tendency that the storage modulus and loss modulus of radish tissue increased with the increasing of HPEF parameters. High cell turgor pressure may be the main reason for the increase in radish dynamic viscoelasticity after HPEF pretreatment. To pears, as HPEF pretreatment parameters were 1 000 V/cm pulse strength, 60 ?s pulse length, and pulse number of 15, the storage modulus and loss modulus of pear tissue reached the maximum. The reason may be the changes in pear cell turgor pressure caused by low HPEF pretreatment, and then with the further increasing of the HPEF parameters, pear cell membrane could be damaged and the dynamic viscoelasticity of pear tissue decreased. With the temperature increasing, the storage modulus of apple, pear, potato, and radish decreased by 34.44%±3.47%, 49.04%±10.64%, 28.12%±10%, and 55.25%±5.61%, respectively. The loss modulus of them decreased by 66.49%±8.05%, 82.12%±15.12%, 44.66%±7.79%, and 67.84%±2.54%, respectively. These results can provide useful information for the optimization of drying process parameters and the improvement of the industrial pretreatment technique in vacuum freeze-drying processing. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Millet is one of the most important special crops in arid and semi-arid north region of China. It has the features of strong tolerance to drought and barren soil, high nutritional value, and wide adaptability, and therefore becomes an important part of industry structure development for specialty crop in China. As people adjust their diet structure, millet has increasingly become an essential and high quality food on the dining table. However, the limited development in mechanization of millet production equipment has significantly restricted the development of millet industry. Millet can be mechanically damaged due to the friction in the processes of seeding, harvesting, milling, storage and transportation. So it is important to understand the friction characteristics of millet and use the friction parameters for the design of equipment during the above processes and applications of related technologies. The previous research on grains’ friction characteristics was mostly about big grain kernel and small grain kernel like millet has been rarely studied. In this research, a typical millet, Jingu-21, produced in Shanxi Province, was selected as test material with 4 moisture content treatments of 10.7%, 13.7%, 16.0% and 19.8%.. The parameters of friction characteristics of millet including repose angle, coefficient of sliding friction and coefficient of internal friction were measured using a test device of repose angle, a test device of sliding friction and a direct shear apparatus. Variations of the friction characteristics affected by moisture content, contact material and shear velocity were quantified and modeled. The results showed that the moisture content ranging from 10.7% to 19.8% did not significantly affect the size and shape of millet grains, which in turn were not significant factors influencing the friction characteristics of millet. The friction between millet and contacting surfaces was mainly caused by the meshing of concave and convex surfaces and the adsorption of millets. Moisture content had a significant effect on repose angle of millet, which increased from 27.32° to 28.43°. The coefficient of sliding friction linearly increased as the moisture content increased, and the coefficients of static/dynamic sliding friction between millet and steel, iron and acrylic were 0.185-0.290/0.169-0.278, 0.212-0.336/0.190-0.319 and 0.190-0.312/0.182-0.302, respectively. The coefficient of sliding friction of millet against iron plate was the highest, while that against steel plate was the lowest. In the terms of friction reduction, the mechanical parts contacting with millet, such as metering device, should adopt steel material. The internal friction coefficient of millet was not affected by the shear velocity (P>0.05), but linearly increased as the grain moisture content increased, and decreased significantly as the normal stress increased (P<0.01). The coefficient of internal friction of millet decreased quadratically as the normal stress increased, and tended to be stable when the vertical stress was higher than 150 kPa. When the shear velocity was 4.8 mm/min, the normal stress was 50-200 kPa, and the moisture content was 10.7%-19.8%, the coefficient of internal friction of millet ranged from 0.501 to 0.639. In order to improve the flow characteristics of millet in the processes of seeding, storage and transportation, the moisture content should be reduced and the normal stress be increased appropriately. The above results were analyzed using the statistical regression and the mechanical performance parameters of millet on friction were established as test elements respectively. The study can provide a theoretical basis for the design and development of millet mechanization equipment. [ABSTRACT FROM AUTHOR]

Compared with other drying methods, vacuum freeze-drying (VFD) has better rehydration property, which can keep the original quality and color to the maximum extent, and has broader application prospects in such fields as food, medicine and biological products. In order to realize the on-line monitoring of moisture ratio, it is important to research the rules of moisture diffusion and the parameter optimization of VFD process within fruits and vegetables. In this paper, the drying ratio in VFD process was expressed with the change of porosity for fruits and vegetables based on Lattice Boltzmann Method (LBM). During the VFD process, ice crystals' sublimation begins at the material surface, and then goes into the inside gradually; the drying layer gets thicker and thicker, and the frozen layer thinner and thinner. Accordingly, the porosity in different parts of the material is different: the porosity at the edge expands quickly with the earliest sublimation and the value is the biggest at last, while the porosity at the center stays stable, and its value is the smallest. Based on the analysis of VFD process of fruits and vegetables, the paper constructed a square porous media model. The porosity of the model was variable, and the model presumed that the porosity increased linearly from the center to the edges during the drying procedure. By using the LBM combined with the conservation laws of mass, momentum and energy, the VFD velocity distribution in the model was simulated. The results showed that the bigger the change of porosity, the higher the VFD velocity, which suggested that the change of porosity in porous media can express the drying rate in VFD process. Then the experiment took apples as samples to validate the results in the simulation. Cleaned and peeled, apples were cut into 10 mm × 17 mm × 17 mm rectangular samples by a sharp self-made knife and frozen in a refrigerator at -40℃ for 10-12 h. In a VFD machine, through the built-in computer in the machine and on-line moisture measurement system connected to the machine, the real-time data of drying apples were collected and the curve of drying was drawn. In different drying stages of apples (1, 3, 5 and 7 h), the distance between 4 different positions at water boundary and sample edge was measured with vernier calipers, the electron microscope scanning was used to observe apple samples surface, and the porosity of apples in different water boundary was got with the help of image processing software Photoshop 2015 and Matlab 7.0. Origin 8.5 software was adopted to analyze the correlation relationship between the location of water boundary and the porosity of apples with experimental data. The results found that the porosity of apples increased linearly from the center to the edges during the drying procedure. Origin 8.5 software was also adopted to analyze the correlation relationship between the moisture ratio and the porosity of apples with experimental data. The mathematical function between the drying rate and the change of porosity was deduced on the basis of the relationship between the moisture ratio and the porosity. The results found that the bigger the change of porosity, the higher the VFD velocity. All the results in the experiments were consistent with those in the simulation, which proved that the change of porosity of apples can express drying rate in VFD process and LBM can be used to analyze moisture migration diffusion and distribution in VFD process. The conclusions not only provide basis for parameter optimization of VFD process of fruits and vegetables, but also offer application infrastructure for on-line monitoring of moisture ratio. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Physical Education Institute / Shanghai Tiyu Xueyuan Xuebao is the property of Shanghai Physical Education Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To compare the short⁃term efficacy and safety of low temperature plasma radiofrequence ablation (LA) vs. high voltage long duration pulsed radiofrequency (HL⁃PRF) in the treatment of cervicogenic headache (CEH). Methods Eighty patients with cervicogenic headache were divided two groups： one treated with low temperature plasma radiofrequence ablation group as group L (n = 50) and the other treated with high voltage long duration pulsed radiofrequency group as group H (n = 30). The two groups were compared in terms of the score by the Visual Analog Scale, score by the Range of Motion Scale, postoperative pain relief rate, postoperative complication incidence, 1, 4, 12, and 24 weeks after the operation, as well as the therapeutic effectiveness and safety. Results Both groups showed significantly lower VAS and ROM scores after operation (P < 0.05). Compared with group L, group H had significantly lower VAS (all P < 0.05) but insignificantly lower ROM scores (all P > 0.05) at each time point. At T4, group H had significantly higher therapeutic effectiveness rate (P < 0.05) and higher incidence of scalp numbness at T3, as compared to group L (P < 0.05). Conclusion The low temperature plasma radiofrequency ablation and high voltage long duration pulsed radiofrequency both are effective and safe in the treatment of CEH, the latter approach can achieve better therapeutic effectiveness 24 weeks after the operation than the former. [ABSTRACT FROM AUTHOR]

Chondroitin sulfate (CS) is widely distributed in animal cartilage tissues, such as thoracic cartilage, laryngeal bone, and nasal bone. The market demand for CS products is ever increasing with the global aging and aging of chronic diseases in recent years, due to the various functional characteristics, such as antioxidant, anti-inflammatory, and lipid-lowering. It is very necessary to promote the extraction of specific active substances. Natural deep eutectic solvents (NADESs) are often simply synthesized to design their structure for high extraction efficiency. The solvents can also be recycled and reused after use, in order to make them green and environmentally friendly. This study aims to improve the utilization rate of cartilage raw materials and reduce the burden of waste treatment. A natural deep eutectic solvent method was also proposed to extract the CS from the bovine laryngeal cartilage, taking betaine and choline chloride as hydrogen bond acceptors and six common natural substances as hydrogen bond donors. Twelve NADESs were prepared to combine them in pairs. Among them, NADES-3 (betaine/urea, molar ratio 1:2) had the highest extraction rate of CS, which was 16.49%. The reason was that the weak hydrogen bonds were formed in the solvent, due to the small molecular weight of urea, and then the betaine counteracted the denaturation of protein by urea, indicating the synergistic effect. The extracted CS was characterized by monosaccharide analysis, infrared spectroscopy, and molecular weight analysis, in order to confirm the extracted CS with an excellent structure. Subsequently, the effects of four single factors on CS extraction were studied, including liquid-solid ratio (10:1, 20:1, 30:1, 40:1, and 50:1 mL/g), moisture content (5%, 20%, 40%, 60%, and 80%), temperature (90, 100, 110, 120, and 130 ℃), and time (60, 90, 120, 150, and 180 min). The optimal extraction conditions were: liquid-solid ratio of 30:1 mL/g, moisture content of 40%, extraction temperature of 110 ℃, and extraction time of 120 minutes. The CS extraction rate reached 17.33%, which was 2.88 times higher than the traditional water extraction. A correlation analysis was made between the physicochemical properties of NADESs and the CS recovery rate. The extraction rate was negatively correlated with the viscosity, whereas, that was positively correlated with pH and polarity, and there was no significant correlation with the density. The density and viscosity of the solvent decreased after dilution with water, and the hydrogen bonding interaction between NADES components gradually weakened to enhance the mass transfer movement of the cartilage matrix to the solvent, thereby improving the extraction rate of CS. Excessive water disrupted the tight hydrogen bonding structure of NADESs, leading to the formation of simple aqueous solutions and the extraction efficiency of solvents. Finally, NADES-3 with a moisture content of 40% was determined as the optimal solvent for the CS extraction. Subsequently, NADES-3 was recycled to verify the reusability. The extraction rate of CS still reached 15.89% after five repetitions. The excellent extraction was maintained after multiple extractions, where some collagen residues in the solvent increased the steric hindrance between molecules, and weakened the hydrogen bonding interaction between them. The NADES extraction can effectively green-recover CS from laryngeal cartilage. This finding can provide new ideas for recyclable extractants, in order to extract bioactive compounds. [ABSTRACT FROM AUTHOR]