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Article ; Online: Salty treatment increased bioactive compounds accumulation during agarwood development in Aquilaria sinensis trees.

Yan, Tingting / Zhang, Ningnan / Hong, Zhou / Chen, Yuan / Li, Gaiyun

2024 Volume 175, Page(s) 105901

Abstract: To compare the bioactive compounds in agarwood induced by different methods in Aquilaria sinensis(Lour.) Gilg trees, a two dimensional thin layer chromatograph(2D-TLC) combined with effect directive analysis(EDA) was developed. Three antioxidants were ... ...

Abstract	To compare the bioactive compounds in agarwood induced by different methods in Aquilaria sinensis(Lour.) Gilg trees, a two dimensional thin layer chromatograph(2D-TLC) combined with effect directive analysis(EDA) was developed. Three antioxidants were found by 2D-TLC-DPPH and further identified as 2-(2-phenylethyl) chromones(PECs) with LC-MS/MS. The 3 antioxidants decreased along agarwood formation and their compositions in drilling induced agarwood differed with those in microbe culture induced agarwood. Further study showed NaCl treatment promoted antioxidants accumulation in agarwood induced by drilling or hot drilling. Hot drilling combined with salty stimulation was most efficient in some chemicals accumulation, which were identified as PECs with antioxidant, tyrosinase or β-glucosidase inhibiting activities by 2D-TLC-EDA-LC-MS/MS. This study provided a 2D-TLC-EDA-LC-MS/MS method for bioactive compounds screen and qualification of agarwood. Based on this method, non-conventional methods were found to accelerate the accumulation of some bioactive PECs in A. sinensis trees.
Language	English
Publishing date	2024-03-11
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	412385-2
ISSN	1873-6971 ; 0367-326X
ISSN (online)	1873-6971
ISSN	0367-326X
DOI	10.1016/j.fitote.2024.105901
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Article ; Online: Toward well-defined colloidal particles: Efficient fractionation of lignin by a multi-solvent strategy.

Jiang, Pan / Pang, Bo / Li, Gaiyun / Han, Yanming / Chu, Fuxiang

International journal of biological macromolecules

2023 Volume 254, Issue Pt 3, Page(s) 127948

Abstract: Colloidal lignin particles (CLPs) have sparked various intriguing insights toward bio-polymeric materials and triggered many lignin-featured innovative applications. Here, we report a multi-solvent sequential fractionation methodology integrating green ... ...

Abstract	Colloidal lignin particles (CLPs) have sparked various intriguing insights toward bio-polymeric materials and triggered many lignin-featured innovative applications. Here, we report a multi-solvent sequential fractionation methodology integrating green solvents of acetone, 1-butanol, and ethanol to fractionate industrial lignin for CLPs fabrication. Through a rationally designed fractionation strategy, multigrade lignin fractions with variable hydroxyl group contents, molecular weights, and high purity were obtained without altering their original chemical structures. CLPs with well-defined morphology, narrow size distribution, excellent thermal stability, and long-term colloidal stability can be obtained by rational selection of lignin fractions. We further elucidated that trace elements (S, N) were reorganized onto the near-surface area of CLPs from lignin fractions during the formation process in the form of -SO
MeSH term(s)	Solvents/chemistry ; Lignin/chemistry ; Ethanol ; Acetone ; Chemical Fractionation/methods
Chemical Substances	Solvents ; Lignin (9005-53-2) ; Ethanol (3K9958V90M) ; Acetone (1364PS73AF)
Language	English
Publishing date	2023-11-10
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2023.127948
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Article ; Online: Identification and characterization of two O-methyltransferases involved in methylated 2-(2-phenethyl) chromones biosynthesis in agarwood.

Wu, Wenli / Yan, Tingting / Sun, Xiaochen / Wilson, Iain / Li, Gaiyun / Hong, Zhou / Shao, Fenjuan / Qiu, Deyou

Journal of experimental botany

2024

Abstract: The 2-(2-phenethyl)chromones (PECs) are the signature constituents responsible for the fragrance and pharmacological properties of agarwood. O-methyltransferases (OMTs) are necessary for the methylated PECs biosynthesis, however, there is little ... ...

Abstract	The 2-(2-phenethyl)chromones (PECs) are the signature constituents responsible for the fragrance and pharmacological properties of agarwood. O-methyltransferases (OMTs) are necessary for the methylated PECs biosynthesis, however, there is little information known about OMTs in Aquilaria sinensis. In this study, we identified 29 OMT genes from the A. sinensis genome. Expression analysis showed they were differentially expressed in different tissues and responded to drill wounding. Comprehensive analysis of the gene expression and methylated PECs content revealed that the AsOMT2, AsOMT8, AsOMT11, AsOMT16, and AsOMT28 could potentially be involved in methylated PECs biosynthesis. The vitro enzyme assays and functional analysis in Nicotiana benthamiana demonstrated that AsOMT11 and AsOMT16 could methylate 6-hydroxy-2-(2-phenylethyl)chromone to form 6-methoxy-2-(2-phenylethyl) chromone. The transient overexpression experiment in Qi-Nan revealed that AsOMT11 and AsOMT16 could significantly promote the accumulation of three major methylated PECs. Our results provide candidate genes for the mass production of methylated PECs using synthetic biology.
Language	English
Publishing date	2024-03-18
Publishing country	England
Document type	Journal Article
ZDB-ID	2976-2
ISSN	1460-2431 ; 0022-0957
ISSN (online)	1460-2431
ISSN	0022-0957
DOI	10.1093/jxb/erae130
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Article: Anatomical, chemical and endophytic fungal diversity of a Qi-Nan clone of

Li, Xiaofei / Fang, Xiaoying / Cui, Zhiyi / Hong, Zhou / Liu, Xiaojin / Li, Gaiyun / Hu, Houzhen / Xu, Daping

Frontiers in plant science

2024 Volume 15, Page(s) 1320226

Abstract: Recently, some new Qi-Nan clones ... ...

Abstract	Recently, some new Qi-Nan clones of
Language	English
Publishing date	2024-03-25
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2613694-6
ISSN	1664-462X
ISSN	1664-462X
DOI	10.3389/fpls.2024.1320226
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Article ; Online: Effects of action processes on wood modification: the in situ polymerization of epoxy monomers as an example

Guo, Dengkang / Yang, Sheng / Fu, Feng / Li, Gaiyun / Chu, Fuxiang

Wood Sci Technol. 2022 Nov., v. 56, no. 6 p.1705-1720

2022

Abstract: A suitable polymer formation process is crucial for the design of new wood modification systems. An unsuitable polymer formation process may result in defects and a decrease in the performance of modified wood. This study elucidates that the shrinkage of ...

Abstract	A suitable polymer formation process is crucial for the design of new wood modification systems. An unsuitable polymer formation process may result in defects and a decrease in the performance of modified wood. This study elucidates that the shrinkage of the gel polymer formed in situ in wood during polymerization results in the shrinking and cracking of the modified wood and shows the importance of separating polymers and solvents during the first stage of wood cell wall polymerization modification to avoid the formation of a gel polymer. Based on this principle, a new epoxy modification system for this process is designed, which includes an epoxy monomer (1,4-butanediol diglycidyl ether), a curing agent (isophorone diamine), and a solvent (ethyl alcohol and water). The epoxy polymer is separated from water during the first-stage reaction, thereby avoiding the formation of a gel polymer. No shrinkage or cracking is observed in the modified wood. Furthermore, the performance of the treated wood is improved. The results show that the anti-swelling efficiency, modulus of rupture, modulus of elasticity, and compressive strength of the treated wood are enhanced by 49%, 20.4%, 24.1%, and 44.2%, respectively, compared with untreated wood. This study provides a reference for the design of new wood modification systems.
Keywords	cell walls ; compression strength ; epoxides ; ethanol ; gels ; modulus of elasticity ; modulus of rupture ; polymerization ; polymers ; shrinkage ; solvents ; wood
Language	English
Dates of publication	2022-11
Size	p. 1705-1720.
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	241313-9
ISSN	0043-7719
ISSN	0043-7719
DOI	10.1007/s00226-022-01424-8
Database	NAL-Catalogue (AGRICOLA)

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Article: The contribution mechanism of furfuryl alcohol treatment on the dimensional stability of plantation wood

Shen, Xiaoshuang / Yang, Sheng / Li, Gaiyun / Liu, Shengquan / Chu, Fuxiang

Industrial crops and products. 2022 Oct. 15, v. 186

2022

Abstract: Furfuryl alcohol polymers (PFA) derived from lignocellulosic biomass have been confirmed as an effective modifier to improve dimensional stability of wood. However, the main reason for the dimensional stability related to this method has remained unclear. ...

Abstract	Furfuryl alcohol polymers (PFA) derived from lignocellulosic biomass have been confirmed as an effective modifier to improve dimensional stability of wood. However, the main reason for the dimensional stability related to this method has remained unclear. In this study, principal consideration of dimensional stabilization was analyzed by a mathematics model regarding anti-swelling efficiency (ASE) and cell wall bulking of furfurylated woods with different weight gain precents (WPGs), and ASE’ obtained by method of Ohmae et al. Simultaneously, confocal laser scanning microscopy and nanoindentation technique were applied to explain the dimensional stability mechanism. Results showed that both ASE and cell wall bulking increased with WPG at 0–69%. A nearly linear (R² = 0.9690) relationship was observed between ASE and cell wall bulking. ASE’ values at different WPGs were approaching zero. The dimensional stability was dominated by cell wall bulking analyzed through both the mathematical model and small ASE’ values at various WPG. In this study, the mechanistic insights into dimensional stabilization of furfurylated wood could provide highly beneficial for controlling the dimensional stability by cell wall bulking.
Keywords	biomass ; cell walls ; dimensional stability ; furfuryl alcohol ; lignocellulose ; mathematical models ; mathematics ; weight gain ; wood
Language	English
Dates of publication	2022-1015
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1132158-1
ISSN	1872-633X ; 0926-6690
ISSN (online)	1872-633X
ISSN	0926-6690
DOI	10.1016/j.indcrop.2022.115143
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Article: Modification mechanism of plantation wood via grafting epoxy monomers onto cell walls

Guo, Dengkang / Yang, Sheng / Fu, Feng / Guo, Nai / Li, Gaiyun / Chu, Fuxiang

Wood science and technology. 2022 May, v. 56, no. 3

2022

Abstract: The range of application for fast-growing plantation wood is limited by its dimensional instability, susceptibility to biodegradation and low mechanical strength. In this study, a novel method based on in situ reaction of a hydrophilic epoxy monomer (1,4- ...

Abstract	The range of application for fast-growing plantation wood is limited by its dimensional instability, susceptibility to biodegradation and low mechanical strength. In this study, a novel method based on in situ reaction of a hydrophilic epoxy monomer (1,4-butanediol diglycidyl ether) in the wood cell walls was proposed to improve the performance of plantation wood. The effects of curing agent on the reaction mechanism and performance of treated wood were discussed in detail. The results demonstrated that after curing using methyl hexahydro phthalic anhydride (MHHPA), an epoxy oligomer with a higher molecular weight and superior water resistance was formed inside the wood cell wall compared to curing with the 2-methylimidazole (2-MI). Moreover, the epoxy group was able to react with alcohol and phenolic hydroxyl in wood through 2-MI catalysis resulting in a higher grafting ratio. After the modification reaction, notable improvements were observed in the dimensional stability (anti-swelling efficiency of more than 65%), fungal (Gloeophyllum trabeum) decay resistance (weight loss of < 6%) and compressive strength (increased by 17%) of the wood.
Keywords	Gloeophyllum trabeum ; alcohols ; biodegradation ; catalytic activity ; cell walls ; compression strength ; decay resistance ; dimensional stability ; epoxides ; fungi ; hydrophilicity ; molecular weight ; phthalic anhydride ; reaction mechanisms ; strength (mechanics) ; technology ; weight loss ; wood
Language	English
Dates of publication	2022-05
Size	p. 813-831.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	241313-9
ISSN	0043-7719
ISSN	0043-7719
DOI	10.1007/s00226-022-01384-z
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Article ; Online: Clinical Observation of Anatomical and Visual Outcomes of Macular Hole after Inverted Internal Limiting Membrane Flap in Patients with Idiopathic Macular.

Zhang, Yunda / Li, Jie / Yue, Huifang / Gao, Zhao / Ma, Tao / Gao, Xiaohong / Yuan, Zhigang / Li, Gaiyun / Zhang, Ximei

Journal of healthcare engineering

2023 Volume 2023, Page(s) 5816473

Abstract: Objective: To investigate anatomical and visual outcomes of macular hole (MH) after inverted internal limiting membrane (ILM) flap technique for idiopathic macular hole (IMH).: Methods: A total of 13 IMH cases diagnosed in Shanxi Eye Hospital between ...

Abstract	Objective: To investigate anatomical and visual outcomes of macular hole (MH) after inverted internal limiting membrane (ILM) flap technique for idiopathic macular hole (IMH). Methods: A total of 13 IMH cases diagnosed in Shanxi Eye Hospital between January 2015 and June 2016 were included in the study. All patients underwent vitrectomy combined with indocyanine green-assisted inverted ILM flap technique. The MH closure rate, best-corrected visual acuity (BCVA), changes of ellipsoid zone (EZ), and external limiting membrane (ELM) were examined before operation and one, three, and six months after operation. Furthermore, 488 nm fundus autofluorescence (FAF) and spectral domain optical coherence tomography (SD-OCT) were used to observe the dynamic changes in function of macular area after surgery. Results: One month after the surgery, the MH closure rate was 100% and the visual acuity (VA) was stable, with no recurrence. Additionally, the average logMAR BCVA before operation was 1.208 ± 0.158, and this value became 0.877 ± 0.105 one month after the operation, showing a significant decrease. Three months after surgery, the average logMAR BCVA was 0.792 ± 0.103, which was significantly lower than the level one month after the surgery but much higher than that six months after surgery (0.708 ± 0.131). Besides, the diameter of the EZ defect of the postoperative one month, three months, and six months was (1377.46 ± 198.65) Conclusion: Inverted ILM flap technique can reconstruct macular anatomical structure and improve VA. This technique is effective for the treatment of IMH with large MH minimum diameter and base diameter.
MeSH term(s)	Humans ; Retinal Perforations/surgery ; Retinal Perforations/diagnosis ; Retrospective Studies ; Retina/diagnostic imaging ; Retina/surgery ; Visual Acuity ; Surgical Flaps
Language	English
Publishing date	2023-02-15
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2545054-2
ISSN	2040-2309 ; 2040-2295
ISSN (online)	2040-2309
ISSN	2040-2295
DOI	10.1155/2023/5816473
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Article: Effects of Lignin-Based Hollow Nanoparticle Structure on the Loading and Release Behavior of Doxorubicin.

Zhou, Yu / Han, Yanming / Li, Gaiyun / Chu, Fuxiang

Materials (Basel, Switzerland)

2019 Volume 12, Issue 10

Abstract: Because of their exceptional absorption capacity, biodegradability, and nontoxicity, nanomaterials fabricated from renewable natural resources have recently become an increasingly important research area. However, the mechanism of drug encapsulation by ... ...

Abstract	Because of their exceptional absorption capacity, biodegradability, and nontoxicity, nanomaterials fabricated from renewable natural resources have recently become an increasingly important research area. However, the mechanism of drug encapsulation by lignin nanoparticles and the role of nanoparticle structure on the stability and loading performance still remain unknown. Herein, lignin hollow nanoparticles (LHNPs) were prepared and applied as promising vehicles for the antineoplastic antibiotic drug doxorubicin hydrochloride (DOX). The hydrogen bonding and π-π interactions contributed to the encapsulation of hydrophilic DOX by LHNPs with hydrophobic cavities. The encapsulation of DOX was enhanced by the pore volume and surface area. In addition, the nanoparticles contributed to the cellular uptake and the accumulation of the drug within HeLa cells. This work provides a scientific basis for future studies on the selective entrapment properties of hollow polymer nanoparticles derived from biomass material as vehicles for overcoming pharmacokinetic limitations.
Language	English
Publishing date	2019-05-24
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma12101694
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Article: Reaction mechanisms of furfuryl alcohol polymer with wood cell wall components

Shen, Xiaoshuang / Guo, Dengkang / Jiang, Pan / Li, Gaiyun / Yang, Sheng / Chu, Fuxiang

Holzforschung. 2021 Dec. 20, v. 75, no. 12

2021

Abstract: Wood properties of furfurylation can be altered by reaction mechanisms of furfuryl alcohol polymer (PFA) and cell walls. Although chemical reactions between PFA and lignin have been studied, reaction mechanisms between PFA and cell wall components, ... ...

Abstract	Wood properties of furfurylation can be altered by reaction mechanisms of furfuryl alcohol polymer (PFA) and cell walls. Although chemical reactions between PFA and lignin have been studied, reaction mechanisms between PFA and cell wall components, including lignin, cellulose and hemicellulose are still not comprehensively understood. In order to elucidate chemical reactions regarding PFA with wood cell walls, model compounds of main cell wall components were used to investigate its reactions with PFA by ¹³C NMR spectroscopy and differential scanning calorimetry (DSC). Results showed that there was no chemical bonding of PFA with either cellulose or hemicellulose. Condensations of uncrowded ring positions (meta, ortho and para) and side chains (α–C, β–C, β–OH, and γ–OH) of lignin with PFA did occur based on ¹³C NMR spectra. Reaction enthalpy and activation energy also confirmed the condensation reactions between lignin and PFA. This study could provide design guidelines to control the chemical reactions of PFA in cell walls and lignin and, therefore, improve the properties of furfurylated wood.
Keywords	activation energy ; cell walls ; cellulose ; enthalpy ; furfuryl alcohol ; hemicellulose ; lignin ; nuclear magnetic resonance spectroscopy ; wood
Language	English
Dates of publication	2021-1220
Size	p. 1150-1158.
Publishing place	De Gruyter
Document type	Article
ZDB-ID	1466072-6
ISSN	1437-434X ; 0018-3830
ISSN (online)	1437-434X
ISSN	0018-3830
DOI	10.1515/hf-2020-0271
Database	NAL-Catalogue (AGRICOLA)

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