Article
Agricultural Engineering
Shuguang Han, Xiangnan Kong, Shitao Xia, Bin Jia, Mengqi Dong, Lu Gan
Summary: The study demonstrates that photocatalytic degradation of condensed tannins can be efficiently achieved by controlling the formaldehyde reactivity of degradation products, with optimal conditions being tannin concentration at 4%, nano-TiO2 catalyst load at 0.2%, and degradation time of 5 hours. Photocatalytic degradation mainly converts condensed tannins of larch bark into dimers with high formaldehyde reactivity.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agriculture, Multidisciplinary
Haibo Pan, Yi Wang, Xinlei Xu, Ziqi Qian, Huan Cheng, Xingqian Ye, Shiguo Chen
Summary: Biorefineries of polyphenols from plant leaves aim to maximize their commercial value, but the presence of condensed tannins (CTs) hinders their bioavailability. A one-step method using acid catalysis was developed to extract polyphenols and depolymerize CTs, leading to improved bioavailability. Purification with specific polymeric resins, such as Amberlite XAD-2, showed high efficiency in enhancing the bioavailability and activity of polyphenols from plant leaves.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Polymer Science
A. F. Jaramillo, J. C. Martinez, P. Flores, C. Medina, D. Rojas, A. Diaz-Gomez, C. Fuentealba, M. F. Melendrez
Summary: Condensed tannins extracted from Pinus radiata bark were used to synthesize tannin resins as a replacement for phenol in phenolic resins and as a polymer matrix in carbon nanofiber-reinforced composite materials. The addition of tannins reduced the gel time and useful life of the resins, while showing no significant variation in degradation temperature. Mechanical properties of the composite materials were improved with tannin resins, leading to a significant increase in modulus.
Article
Agricultural Engineering
Linxin Guo, Taotao Qiang, Yangmin Ma, Longfang Ren, Tingting Dai
Summary: An economical and efficient method for the purification of novel vegetable tannin resources from Coriaria nepalensis bark using macroporous resin was developed in this study. The purity of the tannins was significantly increased through optimal adsorption and desorption process conditions, showing improved antioxidant and antibacterial properties.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Agricultural Engineering
Paula Jylha, Eelis Halmemies, Jarkko Hellstrom, Maija Hujala, Petri Kilpelainen, Hanna Brannstrom
Summary: Norway spruce bark is rich in polyphenolic compounds, including condensed tannins and stilbenes, which have commercial potential. Thermal drying can lead to losses of extractives compounds, and the content of condensed tannins in bark can be better preserved at temperatures below 50 degrees Celsius. Stilbene content is unlikely to be maintainable through thermal drying for industrial processes.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Materials Science, Paper & Wood
Joao Gilberto Meza Ucella-Filho, Mario Sergio Lorenco, Elias Costa Souza, Geraldo Marcio Da Costa, Roberta Hilsdorf Piccoli, Ananias Francisco Dias Junior, Fabio Akira Mori
Summary: This study quantified condensed tannins in the barks of different tree species and evaluated their antibacterial activity against mastitis pathogens. The results showed that Mimosa tenuiflora and Anacardium occidentale had the highest condensed tannin content, and all tree species exhibited good antimicrobial effect, indicating their potential application in the development of natural medicines for treating mastitis.
Article
Engineering, Chemical
Norizaty Irman, Nur Hanis Abd Latif, Nicolas Brosse, Francois Gambier, Firda Aulya Syamani, M. Hazwan Hussin
Summary: This study investigates the possibility of using tannin as a formaldehyde-free wood adhesive. Tannins extracted from Mangrove bark were modified into tanninacetone-phenol-glyoxal (TAPG) and tannin-methanol-phenol-glyoxal (TMPG) adhesives. The properties of the extracted tannins were characterized using various techniques, and the physico-chemical and mechanical properties of TAPG and TMPG adhesives were determined. Results show that both TAPG and TMPG adhesives have superior tensile strength compared to the control adhesive containing formaldehyde.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Chemistry, Multidisciplinary
DeMichael Winfield, John Ring, Jessica Horn, Evan M. White, Jason Locklin
Summary: The study systematically investigates the mechanical and biodegradation properties of semi-aromatic polyesters derived from lignin, which exhibit a wide range of properties including elastomeric, thermoplastic, and strong rigid characteristics. The experiments demonstrate that both degradable and non-degradable polymers can be achieved in this class, illustrating the potential of these polymers to replace non-sustainably derived plastics.
Article
Parasitology
Berit Marie Blomstrand, Heidi Larsen Enemark, Oivind Oines, Havard Steinshamn, Inga Marie Aasen, Karl-Christian Mahnert, Kristin Marie Sorheim, Spiridoula Athanasiadou, Stig Milan Thamsborg, Ian David Woolsey
Summary: The study found that pine bark extracts containing condensed tannins have dose-dependent inhibitory effects on C. parvum, encouraging further investigation into their in vitro and in vivo effects.
PARASITOLOGY RESEARCH
(2021)
Article
Chemistry, Physical
Evandro Bonifacio, Debora P. Facchi, Paulo R. Souza, Johny P. Monteiro, Ketul C. Popat, Matt J. Kipper, Alessandro F. Martins
Summary: This study presents an innovative adsorbent material obtained through dialysis and freezing-thawing cycles, resulting in a solid adsorbent with water insolubility and stability. The adsorbent showed high efficiency in removing dyes from water and exhibited favorable kinetic and equilibrium properties. The adsorption process was spontaneous, endothermic, and governed by hydrophobic interactions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Veterinary Sciences
Spiridoula Athanasiadou, Marit Almvik, Jarkko Hellstrom, Eva Madland, Nebojsa Simic, Havard Steinshamn
Summary: The study showed that bark extracts from commercially used trees in Scandinavia have the potential to be used as alternatives to anthelmintics. The total condensed tannin content was higher in the bark from younger pine and spruce trees, decreased with tree age in pine, while remained relatively stable in spruce and birch bark. The anthelmintic activity of bark extracts varied and was influenced by the tree age and species.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Review
Food Science & Technology
Xuwei Liu, Carine Le Bourvellec, Sylvain Guyot, Catherine M. G. C. Renard
Summary: Flavanols, a subgroup of polyphenols with antioxidant properties, are naturally produced in plants and have significant effects on human health. However, their changes during physical processing, such as oxidation, polymerization, degradation, and epimerization, are often underestimated due to analytical challenges. Research on the effects of physical processing techniques on flavanol content and structural changes is important for improving nutritional value, but further studies are needed to better understand the role of flavanols in food processing.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2021)
Article
Green & Sustainable Science & Technology
Elesandra da Silva Araujo, Mario Sergio Lorenco, Uasmim Lira Zidanes, Thais Brito Sousa, Graciene da Silva Mota, Verena de Nazare de Oliveira Reis, Marcela Gomes da Silva, Fabio Akira Mori
Summary: The bark of the Myrcia eximia DC. tree from the Brazilian Amazon was found to contain high levels of condensed tannins suitable for natural adhesives in wood bonding applications, showing good adhesive properties in both wet and dry conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Jiaman Liu, Yanbiao Chen, Xinxin Zhang, Jie Zheng, Weiying Hu, Bo Teng
Summary: This study found that tannins from hops can effectively inhibit the activity of tyrosinase, with whitening and antioxidant activities, making them suitable as whitening agents in the cosmetics industry.
Article
Chemistry, Multidisciplinary
Sandip K. Singh, Kolja Ostendorf, Markus Euring, Kai Zhang
Summary: This paper introduces a novel lignin-based adhesive synthesized through the synergistic reaction between lignin, dimethylformamide, and acrylic acid under a basic environment. The characterized adhesive shows excellent adhesive performance on various substrates and exhibits good physical-mechanical strength under neutral, acidic, or basic media. It is a versatile and universally applicable adhesive.
Article
Chemistry, Multidisciplinary
Ailei Li, Youbing Mu, Wei Jiang, Xiaobo Wan
CHEMICAL COMMUNICATIONS
(2015)
Article
Polymer Science
Youbing Mu, Sasa Xue, Danfeng Pei, Wei Jiang, Xiaobo Wan
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2017)
Article
Polymer Science
Youbing Mu, Xiaobo Wan
MACROMOLECULAR RAPID COMMUNICATIONS
(2016)
Article
Polymer Science
Sasa Xue, Danfeng Pei, Wei Jiang, Youbing Mu, Xiaobo Wan
Article
Polymer Science
Danfeng Pei, Jiming Wang, Youbing Mu, Xiaobo Wan
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2017)
Article
Polymer Science
Zelin Wu, Liang Li, Youbing Mu, Xiaobo Wan
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Zelin Wu, Jiming Wang, Danfeng Pei, Liang Li, Youbing Mu, Xiaobo Wan
MACROMOLECULAR MATERIALS AND ENGINEERING
(2018)
Article
Materials Science, Biomaterials
Youbing Mu, Zelin Wu, Yan Ma, Jiyong Zheng, Wei Zhang, Zhiyong Sun, Xiao Wang, Danfeng Pei, Liang Li, Wei Jiang, Jian Hou, Xiaobo Wan
JOURNAL OF MATERIALS CHEMISTRY B
(2017)
Article
Materials Science, Biomaterials
Youbing Mu, Zelin Wu, Danfeng Pei, Jiming Wang, Xiaobo Wan
JOURNAL OF MATERIALS CHEMISTRY B
(2018)
Article
Chemistry, Multidisciplinary
Xiuling Sun, Youbing Mu, Jia Zhang, Xiaona Wang, Pingan Hu, Xiaobo Wan, Zongxia Guo, Shengbin Lei
CHEMISTRY-AN ASIAN JOURNAL
(2014)
Article
Polymer Science
Ruiying Gong, Zongxia Guo, Fei Li, Yubao Song, Youbing Mu, Ming Li, Xiaobo Wan
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2014)
Article
Polymer Science
Ailei Li, Mingchen Jia, Youbing Mu, Wei Jiang, Xiaobo Wan
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2015)
Article
Chemistry, Multidisciplinary
Guozheng Xia, Mei Lin, Yi Jiayu, Hu Jinkang, Li Bowen, Youbing Mu, Xiaobo Wan
Summary: This study presents a fast-curing mussel-inspired underwater adhesive, PUP-PPG-DBHP, utilizing the strong underwater adhesion capability of catecholic groups in mussel adhesion proteins and the fast curing capability of polyurethane prepolymer. The adhesive can be directly applied underwater, reaching high bonding strength in a short curing time. It shows good tolerance to pH, ionic strength, and temperature changes, providing an innovative and convenient solution for underwater engineering applications.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Gaoyan Xiong, Wenjuan Xiong, Siwen Dai, Mei Lin, Guozheng Xia, Xiaobo Wan, Youbing Mu
Summary: A mussel-inspired adhesive was synthesized through a one-step esterification reaction, utilizing both double bonds and catechol moieties to achieve short curing time and high bonding strength. It can be used as an underwater adhesive, with shorter curing time and stronger bonding strength compared to conventional agents. Its synthesis from low-cost renewable resources in one step makes it a potential candidate for large-scale practical applications.
ACS APPLIED BIO MATERIALS
(2021)