@article{zhang_tian_wang_liu_lu_guo_jin_xiao_song_2022, title={Impact of degree of substitution of quaternary cellulose on the adsorption on charged surfaces and associated thermodynamics}, ISSN={["1572-882X"]}, DOI={10.1007/s10570-022-04975-y}, journal={CELLULOSE}, author={Zhang, Xinyu and Tian, Jing and Wang, Peipei and Liu, Tian and Lu, Xiaomin and Guo, Jiaqi and Jin, Yongcan and Xiao, Huining and Song, Junlong}, year={2022}, month={Dec} } @article{liu_zhang_lu_wang_zhang_tian_wang_song_jin_xiao_2021, title={Binding affinity of family 4 carbohydrate binding module on cellulose films of nanocrystals and nanofibrils}, volume={251}, ISSN={["1879-1344"]}, DOI={10.1016/j.carbpol.2020.116725}, abstractNote={The binding affinity and thermodynamics of family 4 carbohydrate-binding module (CBM4), belonging to type B CBM, on model surfaces of cellulose nanocrystals (CNC) and nanofibrils (CNF) were investigated by quartz crystal microbalance with dissipation monitoring (QCM-D) technology in real-time at different temperatures. The thermodynamic parameters associated with the interaction, such as Gibbs free energy, enthalpy change, entropy change and heat capacity were obtained using the van’t Hoff analysis via a nonlinear parameter estimation. The results demonstrated CBM4 binds preferentially to both CNF and CNC, whereas the driving forces behind them were very different. The former was related to the hydrogen bonds formed in the CBM4 clefts, resulting in a favorable enthalpy but compensated by unfavorable entropy change; on the contrary, the latter was mainly driven by favorable entropy but compensated by unfavorable enthalpic change due to water rearrangement.}, journal={CARBOHYDRATE POLYMERS}, author={Liu, Tian and Zhang, Yu and Lu, Xiaomin and Wang, Peipei and Zhang, Xinyu and Tian, Jing and Wang, Qingcheng and Song, Junlong and Jin, Yongcan and Xiao, Huining}, year={2021}, month={Jan} } @article{wang_hu_lu_wang_zhang_tian_guo_song_jin_xiao_2021, title={Impact of degree of substitution of cationic xylan on strength of cellulose fiber networks along with medium conductivity}, volume={159}, ISSN={["1872-633X"]}, DOI={10.1016/j.indcrop.2020.113058}, abstractNote={Hemicelluloses have been considered as an efficient component to improve the bonding or strength of fiber networks. The degree of substitution (DS) of cationic hemicelluloses and the ionic strength of applied medium are therefore two most important and crucial factors influencing its performance in wet-end of papermaking. Therein, the impact of DS of cationic xylan (CX) derived from corncob on the strength of fiber networks was systematically explored in aqueous media with various ionic strengths. Initially, a series of CXs with DS ranging from 0.051 to 0.113 were synthesized via a microwave-assisted method. The resulting CXs were applied as wet-end additives in the media with conductivity of 500, 2500, and 5000 μs/cm, representing the low, moderate, and high level of electrolytes in closed white water circulation, respectively. Comparing to the control, all CXs improved the tensile and tear strength of paper significantly, while not in burst strength. The medium conductivity had an adverse impact on the performance of CXs, and the optimum DS of CXs was down shifted to about 0.05 ∼ 0.06. To mimic the adsorption of CXs on fiber surface, the adsorption behavior of CXs on negatively charged gold sensor was monitored by SPR in an attempt to reveal the mechanism. It was found that CXs with low DS had a larger adsorption capacity, thicker and softer adlayer, which are beneficial to fiber bonding and paper strength. This study is meaningful to the applications of xylan into value-added products and to the valorization of agricultural and forestry wastes.}, journal={INDUSTRIAL CROPS AND PRODUCTS}, author={Wang, Xiaoyan and Hu, Fanghui and Lu, Xiaomin and Wang, Qingcheng and Zhang, Xinyu and Tian, Jing and Guo, Jiaqi and Song, Junlong and Jin, Yongcan and Xiao, Huining}, year={2021}, month={Jan} } @article{wu_jiang_jiang_wu_ding_jin_2021, title={Impacts of cotton linter pulp characteristics on the processivity of glycoside hydrolase family 5 endoglucanase from Volvariella Volvacea}, volume={28}, ISSN={["1572-882X"]}, DOI={10.1007/s10570-020-03665-x}, number={4}, journal={CELLULOSE}, author={Wu, Shanshan and Jiang, Xiao and Jiang, Huicong and Wu, Shufang and Ding, Shaojun and Jin, Yongcan}, year={2021}, month={Mar}, pages={1947–1959} } @article{zhang_jiang_wan_wu_wu_jin_2020, title={Adsorption behavior of two glucanases on three lignins and the effect by adding sulfonated lignin}, volume={323}, ISSN={["1873-4863"]}, DOI={10.1016/j.jbiotec.2020.07.013}, abstractNote={The adsorption behaviors of two glucanases, TvEG and TrCel7A, on three lignins were investigated. Three lignins were isolated from raw aspen and its pretreated solid residue. The isolated lignins were labeled as Asp-MWL, DA-MWL (pretreated by dilute acid), and GL-MWL (pretreated by green liquor), respectively. The surface properties of lignins and spin-coated lignin films were characterized by zeta potential, atomic force microscope (AFM) and contact angle. The enzyme adsorption behavior was monitored by quartz crystal microbalance (QCM) and fluorescence spectrometer. TlCel7A had similar adsorption capacities on the three lignin films but were higher than those of TvEG. The TrCel7A adsorptions on the three lignin films were affected by synergistic effect of electrostatic and hydrophobic interaction while the TvEG adsorptions on the three lignin films were mainly dominated by hydrophobic action. The adsorption capacities of TlCel7A and TvEG on the three lignin films were decreased by adding SL. Plausible explanation was that the SL and glucanase formed a complex with more negative charges, which suppressed the adsorption of glucannase on lignin through electrostatic repulsion. It also explained the improved enzymatic hydrolysis efficiency of lignocellulose upon adding SL.}, journal={JOURNAL OF BIOTECHNOLOGY}, author={Zhang, Yuqing and Jiang, Xiao and Wan, Shanqi and Wu, Wenjuan and Wu, Shufang and Jin, Yongcan}, year={2020}, month={Nov}, pages={1–8} } @article{wu_chen_jameel_chang_phillips_jin_2020, title={Effects of Lignin Contents and Delignification Methods on Enzymatic Saccharification of Loblolly Pine}, volume={59}, ISSN={["0888-5885"]}, DOI={10.1021/acs.iecr.0c00645}, abstractNote={Softwood pulp is more recalcitrant toward enzymatic hydrolysis than hardwood or nonwood pulps. Pulps of various kappa numbers were prepared from loblolly pine chips by kraft cooking, which was foll...}, number={18}, journal={INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH}, author={Wu, Shufang and Chen, Hui and Jameel, Hasan and Chang, Hou-min and Phillips, Richard and Jin, Yongcan}, year={2020}, month={May}, pages={8532–8537} } @article{lin_xing_jin_lu_huang_yong_2020, title={Insight into understanding the performance of deep eutectic solvent pretreatment on improving enzymatic digestibility of bamboo residues}, volume={306}, ISSN={["1873-2976"]}, DOI={10.1016/j.biortech.2020.123163}, abstractNote={Deep eutectic solvent (DES) is a promising pretreatment for improving enzymatic digestibility of lignocellulosic material by altering the physicochemical properties. However, few work has been done to quantitatively analysis the physicochemical properties changes of lignocellulosic material with enzymatic digestibility. In this work, DES pretreatment with different molar ratios of choline chloride/lactic acid was carried out on bamboo residues and respective enzymatic digestibility was investigated and linearly fitted with corresponding physicochemical features changes of the pretreated bamboo residues. Results showed that enzymatic digestibility of DES-pretreated bamboo residues was enhanced with the increasing molar ratio of choline chloride/lactic acid, which was due to DES pretreatment’s ability to remove lignin and xylan, reduce the degree of polymerization of cellulose, enhance the crystallite size of cellulose, and improve cellulose accessibility. Several compelling linear correlations (R2 = 0.6–0.9) were observable between enzymatic digestibility and these changes of physicochemical properties, demonstrating how DES pretreatment improve the enzymatic digestibility.}, journal={BIORESOURCE TECHNOLOGY}, author={Lin, Wenqian and Xing, Sheng and Jin, Yongcan and Lu, Xiaomin and Huang, Caoxing and Yong, Qiang}, year={2020}, month={Jun} } @article{jin_jameel_chang_phillips_2010, title={Green Liquor Pretreatment of Mixed Hardwood for Ethanol Production in a Repurposed Kraft Pulp Mill}, volume={30}, ISSN={["1532-2319"]}, DOI={10.1080/02773810903578360}, abstractNote={Abstract The development of a new, relatively simple process, which uses green liquor (sodium carbonate and sodium sulfide) as a pretreatment for the production of ethanol is described in this article. The pulps produced by this process can be enzymatically hydrolyzed to monomeric sugars with a high overall sugar recovery. The use of green liquor for pretreatment ensures that the chemicals used during pretreatment can be recovered efficiently using proven technology and can be easily implemented in a repurposed kraft pulp mill. The yield of pulps produced by the green liquor pretreatment process is about 80% with nearly 100% cellulose and 75% xylan in retention in mixed southern hardwood. The low pH prevents the random hydrolysis of polysaccharide and secondary peeling reactions from occurring during the pretreatment, resulting in higher retention of the polysaccharides in pulp. About 35% of the lignin is removed during the green liquor pretreatment process, which is sufficient for efficient enzymatic hydrolysis. The amount of sugar produced in enzymatic hydrolysis increased with both the green liquor and enzyme charge. The increase in enzymatic hydrolysis efficiency was small as the total titrateable alkali was increased beyond 12–16%. With green liquor pretreatment at 16% Total Titrateable Alkali (TTA), the overall sugar recovery for hardwood was shown to be around 77% at a cellulase charge of 20 FPU/gm of substrate. A sugar recovery of 80% could be achieved at higher enzyme charges. These levels of sugar recovery are competitive with other pretreatments for hardwood. This novel pretreatment process can be used to repurpose kraft mills, which are being closed due to a decrease in the demand for paper in North America, for production of ethanol.}, number={1}, journal={JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY}, author={Jin, Yongcan and Jameel, Hasan and Chang, Hou-min and Phillips, Richard}, year={2010}, pages={86–104} }