INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Youyong Wang,Jing Tang,Qianhui Peng,Huilin Yu,Xiufang Zhu,Haifeng Li,Di Lan
Scalable and highly efficient bamboo whitening remains a great challenge. Herein, an effective bamboo whitening strategy is proposed based on photocatalyzed oxidation , which involves H 2 O 2 infiltration and UV illumination. The as-prepared white bamboo well maintains the nature structure of natural bamboo and demonstrates high whiteness and superior mechanical properties. The absorbance value is significantly decreased to 3.5 and the transmittance is increased to 0.04 % in UV–visible wavelength range due to the removal of light-absorbing chromospheres of lignin, resulting in a high whiteness when the UV illumination time is 8 h. In addition, the white bamboo displays a high tensile strength of 30 MPa and a high flexural strength of 36 MPa due to the well-preserved lignin units (lignin preservation is about 89 %). XRD patterns and analysis show that photocatalyzed oxidation has no effect on the crystal parameters of cellulose. Compared with the traditional bamboo whitening technology, our photocatalyzed oxidation strategy demonstrates significant advantage including chemical and time conservation, high efficiency, environment friendliness, and mechanical robustness. This highly efficient and environmentally friendly photocatalyzed oxidation strategy for the fabrication of white bamboo may pave the way of bamboo-based energy-efficient structural materials for engineering application .
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Zihao Wang,Xuan Wang,Yaoli Zhang
Based on the preparation of transparent bamboo, this study optimized the preparation process by selecting different position of bamboo and adjusting the delignification time. It is concluded that the transparent bamboo prepared from middle layer bamboo after 5 h delignification treatment has the best comprehensive performance, with light transmittance of 89.6% and haze of 43.3%. It has excellent tensile strength (89.7 MPa), good thermal insulation performance (0.187Wm −1 K −1 ), certain UV aging resistance, thermal dimensional stability and waterproof properties for outdoor conditions. It can not only select transparent bamboo with the best performance, but also save raw materials as much as possible, so that its application range is wider.
研究领域:
材料科学
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植物学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 23
·1887
·
IF 4.4
Xiaolong Qiao,Shixing Wang,Qiulian Liu,Yuanming Zhang,Guangting Han,Haoxi Ben,Wei Jiang,Haiguang Zhao,Yan Song
China is the country with the most abundant bamboo resources in the world. Using bamboo as a raw material for pulping and papermaking can save a lot of wood and protect forests. Bamboo pulping enterprises mostly adopt sulfate processes to produce a large amount of black liquor (BL), which contains monosaccharides, polysaccharides, oligosaccharides, pectin, lignin, etc. The utilization of the high-value organic matter is of great economic and environmental significance. In this study, blue-green carbon dots (C-dots) were prepared from bamboo ( Lingnania chungii ) kraft pulp BL using a hydrothermal method. The changes in carbohydrate content in BL in relation to hydrothermal temperature and hydrothermal time were discussed in detail. Then, a series of characterizations of BL-C-dots, prepared under one of the hydrothermal conditions (180 °C, 6 h), were performed and the BL-C-dots showed an excitation-dependent photoluminescence (PL) spectrum and a quantum yield (QY) of 2.9% in an aqueous solution. Finally, the as-prepared BL-C-dots were successfully used as fluorescent materials to develop an anti-counterfeiting code. The fluorescent code exhibited a clear outline, an excitation-tunable color, good stability, and high security, showing great anti-counterfeiting potential and realizing the high-value utilization of BL.
研究领域:
林业
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Xin Weiming,Zhang He,Huang Weiwei,Zeng Rong,Gao Xia,Zhou Zuowan
Bamboo, as a renewable and biodegradable polymer resource, is currently used to develop environmentally-friendly polymer materials. However, obtaining bamboo-derived foam materials through sol–gel method encounters challenges in controlling pore structures and foam performance, primarily stemming from weak hydrogen bonding interactions among cellulose, hemicellulose and lignin. In this work, robust bamboo-derived foam materials are developed by freeze-drying all-component bamboo gels. To obtain gels with stable three-dimensional network structure, tannic acid (TA) is used to accelerate the sol–gel transition of the all-component bamboo suspension, by mediating the hydrogen bonding interactions among various biomass components. As a result, the gelation time is reduced from 60 h for the bamboo suspension down to 6 h for the TA/bamboo suspension. After freeze-drying the TA/bamboo gels, foam materials with a low density of ~ 0.08 g/cm 3 and satisfactory thermal insulation can be obtained. Notably the addition of TA not only preserves all components of the bamboo biomass in the foam materials, but also improves the compressive strength of the bamboo-derived foam material by 240% with respect to that pure bamboo foam. This study offers a sustainable and efficient approach for developing high-performance porous materials from all-biomass resources. Graphic abstract
研究领域:
材料科学
·
可再生资源研究
✓ 已验证
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Fanyang Meng,Thomas L. Eberhardt,Yaru Li,Chen Xu,Hui Pan
A novel ternary deep eutectic solvent (TDES) composed of glycine hydrochloride, ethylene glycol, and p -toluenesulfonic acid was synthesized. The prepared TDES exhibited highly efficient capacity for the pretreatment of bamboo biomass ( Phyllostachys edulis ). About 95 % of xylan and 89 % of lignin could be removed from the bamboo feedstock after being pretreated with the TDES at 100 °C for 1 h. In addition, a nearly complete glucose yield of 98.7 % could be achieved, which was 9.4 times higher than that of the untreated bamboo. The pH value of the TDES is an important factor affecting the bond cleavage between lignin and carbohydrates. Additionally, the polarity facilitates selective dissolution of lignin via hydrogen bonding. Molecular dynamics simulations reveal an increase in hydrogen bond formation between TDES and lignin model compounds. The findings establish the TDES as a green, efficient method for bamboo biomass pretreatment, facilitating the conversion of this biomass resource into glucose for bioenergy applications.
研究领域:
生物化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Hong Liao,Baojun Feng,Xueping Song,Junhua Zhang,Zhanying Zhang
Mandelic acid (MA), a natural and environmentally friendly organic acid, demonstrates high selectivity and efficiency in hydrolyzing hemicellulose, making it an excellent candidate for xylooligosaccharides (XOS) production at low acid dosages. Despite its potential, the application of MA for XOS production has not been evaluated. The study first investigated the effectiveness of MA in hydrolyzing hemicellulose in bamboo into XOS. Under optimized conditions (50 mM MA, 180 °C, 45 min), a high XOS yield of 65.9 % was achieved, with a total xylobiose and xylotriose yield of 43.5 %. Subsequent alkaline pretreatment enabled 92.1 % lignin removal from MA-pretreated bamboo. The recovered lignin exhibited a high purity of 95.2 % and retained fundamental structure and functional groups of native lignin. The resulting residue displayed enhanced crystallinity and accessibility, with reduced hydrophobicity and surface area lignin compared to untreated bamboo. At high substrate concentration of 20 %, cellulase hydrolysis resulted in a glucose conversion efficiency of 83.9 %. Overall, this integrated strategy offered an efficient approach for the co-production of valuable XOS, lignin, and glucose from bamboo. The efficient energy utilization and economic viability further highlighted the potential of this method for large-scale industrial applications, making it an attractive option for biomass valorization.
研究领域:
生物化学
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生物质能
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 4
·期 3
·552-561
·
IF 5.693
Yan Jia,Niu Yanfei,Wu Chunhua,Shi Zhengjun,Zhao Ping,Naik Nithesh,Mai Xianmin,Yuan Bingnan
As antimicrobial agents, essential oils (EOs) have been used by more and more companies as alternatives to traditional chemicals. In the study, seven EOs from Pinus massoniana , cinnamon , Star anise , Litsea cubeba , Cinnamomum camphora , Lemon eucalyptus , and Camphor from Guangxi were researched for their antifungal performances and chemical components. With the help of the diffusion in a disc way as well as the minimum inhibitory concentration (MIC) to three fungi, the antifungal impacts and the bamboo slices anti-mold tests of these EOs were studied. The compositions of these oils were identified. Litsea cubeba EO, Anise EO, and Cinnamon EO exhibited super antifungal activity against Trichoderma viride , Aspergillus niger , and Penicillium citrinum . Treated by Cinnamon EO, Anise EO, or Litsea cubeba EO, few molds were observed on the surface of bamboo chips, which showed that these EOs had a good antifungal effect on molds of bamboo. Graphical abstract Antifungal effect of seven essential oils on bamboo
研究领域:
植物学
·
微生物学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 26
·16942-16954
·
IF 4.036
Yawei Zhan,Meixin Wang,Tengfei Ma,Zhiqiang Li
In this study, the effect of the γ-valerolactone (GVL)/H2O pretreatment system on bamboo (Neosinocalamus affinis) for enzymatic hydrolysis and ethanol fermentation was investigated. The performance characterization of the pretreated bamboo substrates, including the chemical composition, the structural characteristics, and the ability to produce bioethanol, were evaluated. The recovered substrates were enzymatically hydrolyzed for 48 h and then fermented to bioethanol. For the cellulose in the raw bamboo material, the highest cellulose-to-glucose conversion yield (CGCY) was achieved at 140 °C for 2 h with GVL : H2O = 8 : 2, which was 73.39%, and the cellulose-to-ethanol conversion yield (CECY) was 67.00%. This indicated that 183.5 kg of bioethanol could be produced per ton of bamboo, which was 9.71-folds higher than that directly converted from the untreated raw bamboo powder. Under these conditions, 50.60% of the active lignin can be recovered and be used as a wood-derived feedstock for further high-valued utilization. Meanwhile, the maximum concentration of fermentation inhibitors formed after pretreatment was about 140.9 mmol L−1, and had weak inhibition to the subsequent reaction. It has been shown that the cellulose could be effectively separated from bamboo and converted into bioethanol through the GVL/H2O pretreatment system.
研究领域:
生物能源
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植物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2022
·
IF 7.693
Zhongwei Wang,Shoulu Yang,Zhu Liu,Fangjun Ding,Ning Ji,Yiqiang Wu
A novel method for preparing a tung oil-based flame retardant polyol (MTTO) is described. An epoxidized tung oil methyl ester was initially prepared using green nontoxic phosphotungstate (Ag 3 O 40 PW 12 ·xH 2 O) as the catalyst. The MTTO was then produced from epoxidized transesterified tung oil (ETOME) using diethyl phosphate and ring-opening. The MTTO molecular structure was analyzed using FTIR, 1 H, 31 P, 13 C NMR, and HR-MS. Both MTTO and MTTO-coated melamine-modified bamboo showed excellent flame retardation, with a UL-94 rating of V-0, increased LOI from 28.3 % to 36.4 % and 38.7 %, and significant reductions in the PHRR and THR of the untreated bamboo of 42.7 % and 50.6 % and 37.5 % and 42.1 %, respectively. MTTO was effective in both the gas and condensed phases, preventing bamboo degradation through the release of non-flammable small molecules and the formation of a cross-linked phosphorus-oxygen network carbon layer. Moreover, the addition of melamine led to the release of more non-flammable gases, expansion of the char layer, and increased density of the nitrogen-phosphorus-oxygen cross-linked network carbon layer during combustion, resulting in reduced PHRR and THR.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Bioresources and Bioprocessing
·
2021
·Vol. 8
·期 1
·1-14
·
IF 4.578
Gong Zhenggang,Yang Guangxu,Song Junlong,Zheng Peitao,Liu Jing,Zhu Wenyuan,Huang Liulian,Chen Lihui,Luo Xiaolin,Shuai Li
Abstract Lignin deposits formed on the surface of pretreated lignocellulosic substrates during acidic pretreatments can non-productively adsorb costly enzymes and thereby influence the enzymatic hydrolysis efficiency of cellulose. In this article, peanut protein (PP), a biocompatible non-catalytic protein, was separated from defatted peanut flour (DPF) as a lignin blocking additive to overcome this adverse effect. With the addition of 2.5 g/L PP in enzymatic hydrolysis medium, the glucose yield of the bamboo substrate pretreated by phenylsulfonic acid (PSA) significantly increased from 38 to 94% at a low cellulase loading of 5 FPU/g glucan while achieving a similar glucose yield required a cellulase loading of 17.5 FPU/g glucan without PP addition. Similar promotion effects were also observed on the n-pentanol-pretreated bamboo and PSA-pretreated eucalyptus substrates. The promoting effect of PP on enzymatic hydrolysis was ascribed to blocking lignin deposits via hydrophobic and/or hydrogen-bonding interactions, which significantly reduced the non-productive adsorption of cellulase onto PSA lignin. Meanwhile, PP extraction also facilitated the utilization of residual DPF as the adhesive for producing plywood as compared to that without protein pre-extraction. This scheme provides a sustainable and viable way to improve the value of woody and agriculture biomass. Peanut protein, a biocompatible non-catalytic protein, can block lignin, improve enzymatic hydrolysis efficiency and thereby facilitate the economics of biorefinery. Graphical abstract
研究领域:
生物化学
·
可再生资源与环境
✓ 已验证
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2020
·Vol. 231
·期 10
·1-18
·
IF 1.9
Liu Huan,Xu Chao,Wei Xueling,Ren Yiming,Tang Dingxing,Zhang Cuige,Zhang Rongli,Li Fang,Huo Chaofei
In this study, activated carbons were prepared from bamboo via carbonization and successive KOH activation by tuning the post-treatment procedure. The resultant carbons possessed high surface area, high oxygen doping, and 3D hierarchical porous structure with interconnected micro-, meso- and macropores. These features resulted in ultra-excellent adsorption capacity for rhodamine B (> 1200 mg/g). Furthermore, the kinetic and isotherm experimental data were best described by pseudo-second kinetic model and Langmuir isotherm model, respectively. The adsorption of RhB onto the as-synthesized carbons was a spontaneous endothermic process. The π–π stacking, hydrogen bond, and acid-base interaction were proposed to account for the adsorption mechanism. Moreover, SiO 2 in bamboo-based carbon functioned as frameworks and its removal via alkali treatment led to the collapse of porous structure, decreasing surface area, pore volume, and O heteroatom doping, consequently dropping the adsorption performance. Overall, bamboo as an abundant and renewable biomass could be considered as a potential precursor for the production of excellent adsorbent for wastewater purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Gaigai Duan,Shiyi Zeng,Haotian Jin,Shuijian He,Haoqi Yang,Xiaoshuai Han,Chunmei Zhang,Yong Huang,Shaohua Jiang
Carbon-based supercapacitors are highly regarded for their high specific power and long cycle life. However, they often face the challenge of low specific energy and difficulty in simultaneously improving both specific energy and specific power. In this study, a high-performance composite electrode was prepared using the cross-section of bamboo as raw material, followed by KOH activation, in-situ growth of ZIF-67, and carbonization. The bamboo-derived porous carbon showed significant improvement in performance indicators such as specific capacitance and energy density. Electrochemical characterization in a three-electrode system showed that at a current density of 1 mA cm −2 , our composite electrode material achieved a peak specific capacitance of 24.7 F cm −2 . When assembled into a symmetric supercapacitor, it can provide an energy density of 1.00 mWh cm −2 at a power density of 2.49 mW cm −2 . Notably, at a substantial current density of 30 mA cm −2 , the electrode maintained a capacitance retention of 96.2 % after 10,000 cycles. These results not only highlight the potential of bamboo-derived porous carbon but also point to a broad avenue for the preparation of energy storage devices by combining MOFs with bamboo.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）