Comparative characterization of ethanol organosolv lignin polymer from bamboo green, timber and yellow

Zhang, Wenbo; Tian, Guohui; Polle, Andrea; Janz, Dennis; Euring, Dejuan; Yue, Xianghua; Zhao, Hansheng; Fei, Baowei; Jiang, Zehui

doi:10.1007/s00226-018-1019-9

Cited by 22 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relative amount of chemical composition, including lignin, cellulose, hemicellulose, and ash, is presented in Figure 9 . This research has shown that bamboo green is different from the inner culm in the percentage of the three main components, accounting for a high ratio of lignin [ 86 ]. Under both roofed and unroofed conditions, bamboo green presented a descending amount of the cell wall components total (CWT), particularly unroofed bamboo, as much as 10.6%, indicating a degradation in the bamboo cell wall from week_4 to week_13.…”

Section: Resultsmentioning

confidence: 99%

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

An,

Han,

Ren

et al. 2023

JoF

View full text Add to dashboard Cite

Bamboo’s mechanical and aesthetic properties are significantly influenced by fungi. However, few studies have been conducted to investigate the structure and dynamics of fungal communities in bamboo during its natural deterioration. In this study, fungal community succession and characteristic variations of round bamboo in roofed and unroofed environments over a period of 13 weeks of deterioration were deciphered using high-throughput sequencing and multiple characterization methods. A total of 459 fungal Operational Taxonomic Units (OTUs) from eight phyla were identified. The fungal community’s richness of roofed bamboo samples showed an increasing trend, whereas that of unroofed bamboo samples presented a declining trend during deterioration. Ascomycota and Basidiomycota were the dominant phyla throughout the deterioration process in two different environments: Basidiomycota was found to be an early colonizer of unroofed bamboo samples. Principal Coordinates Analysis (PCoA) analysis suggested that the deterioration time had a greater impact on fungal community variation compared to the exposure conditions. Redundancy analysis (RDA) further revealed that temperature was a major environmental factor that contributed to the variation in fungal communities. Additionally, the bamboo epidermis presented a descending total amount of cell wall components in both roofed and unroofed conditions. The correlation analysis between the fungal community and relative abundance of three major cell wall components elucidated that Cladosporium was negatively correlated with hemicellulose in roofed samples, whereas they presented a positive correlation with hemicellulose and a negative correlation with lignin in unroofed samples. Furthermore, the contact angle decreased during the deterioration process in the roofed as well as unroofed samples, which could arise from the degradation of lignin. Our findings provide novel insights into the fungal community succession on round bamboo during its natural deterioration and give useful information for round bamboo protection.

show abstract

Section: Resultsmentioning

confidence: 99%

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

An,

Han,

Ren

et al. 2023

JoF

View full text Add to dashboard Cite

show abstract

“…S3. The severity of the damage to the parenchyma cells and fibers was different due to the differences in their chemical components, microstructure, and properties, which lead to them reacting differently when treated under the same alkali conditions (Huang et al 2015;Zhang et al 2018;Jin et al 2019;Lian et al 2020;Chen et al 2021b). The density of the bamboo slivers treated with a 15% NaOH solution increased up to the maximum values of 1.7 and 1.45 g/cm 3 for the slivers from the inner and outer layer of the bamboo, respectively (the untreated samples were 0.87 and 1.22 g/cm 3 , respectively).…”

Section: Microstructurementioning

confidence: 99%

Dimensional stability and mold resistance of bamboo slivers treated by alkali

Chen

Shi

et al. 2022

BioRes

View full text Add to dashboard Cite

The aim of this study was to investigate the dimensional stability and mold resistance of slivers from the outer and inner layers of bamboo treated with alkali solutions at various concentrations. The microstructure of the bamboo slivers considerably changed as the parenchyma cells collapsed after alkali treatment followed by a drying process. The water absorption of the treated bamboo slivers increased, while the dimensional stability decreased, especially for the slivers from the inner layer of bamboo. The alkali treatment removed starch from the parenchyma cells in the bamboo slivers treated with a 2% to 15% alkali solution, resulting in a considerable improvement in the mold resistance. The mold resistance performance of inner bamboo slivers was greatly improved when treated at a low concentration (2%). No mold on the bamboo slivers was found even in a high humidity environment for a long period of time, i.e. 87 days. As the concentration increased up to 25%, alkali only removed starch from parenchyma cells that were near the surface of the bamboo slivers and caused partial damage to the parenchyma cells in the outer bamboo slivers. The wettability of the alkali-treated bamboo slivers was higher than that of the untreated samples due to the removal of lignin and a rougher surface. Based on the test results, alkali treatment is a simple yet highly effective method for improving mold resistance but would cause a reduction in the dimensional stability of the bamboo slivers.

show abstract

“…Compared to other lignocellulosic biomass, bamboo has unique characteristics in chemical composition. Cellulose is the most abundant organic polymer on earth, making up 40–50% of the mass in bamboo. , Hence, chemical characterization of bamboo is essential in determining its suitability for various applications. The accurate compositional analysis enables the evaluation of potential conversion yields and process economics .…”

Section: Introductionmentioning

confidence: 99%

Effect of Age and Height on the Chemical Properties of Muli Bamboo (Melocanna baccifera)

Hossain¹,

Ghosh²,

Das

et al. 2022

ACS Omega

View full text Add to dashboard Cite

Melocanna baccifera is the most common bamboo species which grows naturally and gregariously covering large tracts of land in the forests of Chittagong Hill Tracts of Bangladesh. However, there is limited information about the chemical characterization of its culms for its utilization and processing. This paper aimed to determine the effect of age and height position on the chemical properties of M. baccifera. The highest value of holocellulose content was 74.66% for the top portion of 3-year-old bamboo, while the bottom part of 3-year-old bamboo showed the highest value of lignin (27.83%) and extractive (5.24%) content. For caustic soda (1% NaOH) solubility, the bottom portion of 1-year-old bamboo had shown the maximum value (25.67%), and it was the lowest (19.10%) for the top portion of 3-year-old bamboo. Ageing had a significant (p < 0.05) effect on all chemical properties, while the height position had a significant effect on the holocellulose and lignin content and water solubility. The chemical properties of M. baccifera can enable its proper utilization in the downstream process.

show abstract

Comparative characterization of ethanol organosolv lignin polymer from bamboo green, timber and yellow

Cited by 22 publications

References 17 publications

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

Dimensional stability and mold resistance of bamboo slivers treated by alkali

Effect of Age and Height on the Chemical Properties of Muli Bamboo (Melocanna baccifera)

Contact Info

Product

Resources

About