Article
Biochemistry & Molecular Biology
Sazzadur Rahman, Devasish Chowdhury
Summary: This work demonstrates the use of guar gum-sodium alginate blending with glucose-glycerol carbon dots nanocomposite film to detect relative humidity. The fabricated nanocomposite film acts as an excellent smart sensor based on the fluorescence 'on-off' mechanism against humidity. By observing the fluorescence change under different humidity conditions, the study successfully detects the freshness of packed food in high humidity conditions using the developed nanocomposite film.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Nahid Najafian, Aazam Aarabi, Alireza Nezamzadeh-Ejhieh
Summary: This study aimed to optimize the formulation of gluten-based composite film incorporated with Persian gum and Guar gum using the response surface method. The effects of different variables on the physicochemical properties of the films were investigated. The results showed that gluten is compatible with Persian gum and Guar gum, and the variables significantly affected the films' mechanical and physical properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Showkat Ali Ganie, Rayees Ahmad Naik, Akbar Ali, Tariq Ahmad Mir, Nasreen Mazumdar
Summary: Guar gum was utilized as a complexing agent for iron to obtain a polysaccharide-bound iron (II) complex in this study. The guar gum-based delivery system showed pH-sensitive behavior towards the controlled release of iron. The new functionalized guar gum iron complexes exhibited positive effects on improving hematological index and growth in rats with iron deficiency anemia.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Applied
J. Tripathi, R. Ambolikar, S. Gupta, P. S. Variyar
Summary: Incorporating nanoclays into methylated guar gum films can significantly improve tensile strength and reduce water vapor transmission rate, while not affecting the opacity of the films. The intercalation of methylated guar gum improves the barrier and mechanical properties of nanocomposite films.
FOOD HYDROCOLLOIDS
(2022)
Article
Chemistry, Applied
Lei Dai, Xiangju Xi, Xinyu Li, Wei Li, Yuehong Du, Yong Lv, Wenhang Wang, Yonghao Ni
Summary: This study improved the mechanical and barrier properties of paper by modifying it with TOCN/CGG hydrogel film, significantly enhancing the tensile strength and bursting strength. The hydrogel film not only provided oil resistance, but also maintained the freshness of the mooncake, making it a green and sustainable food packaging material.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Neha Pal, Madhu Agarwal, Ragini Gupta
Summary: Polysaccharide-based guar gum (GG) biopolymer is used to synthesize silver nanoparticles via a hydrothermal process, with GG acting as a reducing and stabilizing agent. In addition, GG is used to prepare peel-off masks as antibacterial agents. The synthesized GG/Ag nanoparticles peel-off gel shows good antibacterial efficiency against various bacteria.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Yiping Wen, Zhengfeng Xie, Songsong Xue, Jie Long, Wei Shi, Yucheng Liu
Summary: A novel environmentally friendly benzenesulfonyl hydrazone modified guar gum (DGH) was prepared and characterized for its excellent adsorption performance towards dyes. The as-prepared DGH showed highly efficient separating performance towards anionic and cationic dyes. The adsorption thermodynamics indicated that the adsorption of dyes onto DGH was spontaneous and endothermic, and the adsorption mechanism involved hydrogen bonding and electrostatic interaction.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Aatrayee Das, Sonia Kundu, Mradu Gupta, Arup Mukherjee
Summary: In this research, bio-safe films were successfully developed for disrupting Escherichia coli biofilms and killing planktonic cells. The films, made from kojic acid and guar gum propionate, showed excellent physical and tensile properties. The results showed that the films were highly effective in inhibiting E.coli biofilms and planktonic cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Materials Science, Multidisciplinary
Himadree Sarmah, Bitupon Boruah, Munu Borah, Nishant Shukla, Ankur Gogoi, Utpal J. Mahanta, Jayanta K. Sarmah, Lakshi Saikia, M. Deka
Summary: This study demonstrates the development of biodegradable gel polymer electrolytes based on guar gum dispersed with TiO2 nanofibers. By incorporating 2.5 wt% nanofibers into the guar gum, a very high ionic conductivity of 2.3 x 10-3 Scm-1 at ambient temperature has been achieved at a relatively low electrolyte uptake ratio of 92%, indicating the role of nanofibers in promoting ion transport in NCGPEs. The nanofibers also enhance the electrochemical and interfacial properties of NCGPEs, making them a suitable candidate for next-generation energy storage systems.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Composites
Ming Yan, Hailong Lu, Ting Wu, Lili Zhang, Jinxia Ma, Xiaofan Zhou
Summary: The accumulation of plastic wastes poses a serious threat to the environment and human health. This study presents a green and highly efficient method for preparing cellulose composites with excellent performances, inspired by the reinforcement principle of lignin-carbohydrate complexes in natural trees. The method utilizes biomass-derived materials to improve the performance of the cellulose framework, and employs a self-assembled and infiltrated strategy for preparing the composites, which can be manufactured on an industrial scale.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Yang Yang, Chen Qi, Zhu Chao, Wu Xiaolong, Ji Zhe, Gu Zhuoran, Chen Liang
Summary: The nano-zirconium-boron crosslinker significantly improved the temperature and shear resistance of the fracturing fluid, maintaining viscosity above 60 mPa.s after shearing at 180 degrees Celsius for 2 hours. The analysis showed that the fracturing fluid crosslinked by nano-zirconium-boron has thicker and stronger connecting lines, leading to better temperature and shear resistance.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Junchi Ma, Yanru Gu, Depeng Ma, Weizhao Lu, Jianfeng Qiu
Summary: In this study, a modified guar gum (GG-SH) was prepared through a rapid condensation reaction and showed high removal efficiency of crude oil, with a maximum adsorption capacity of 2157.3 mg.g-1. The sorption of crude oil onto GG-SH was governed by pseudo-second-order kinetics and Langmuir models. After six cycles of regeneration, the removal rate remained high, indicating the outstanding ability of GG-SH for oily sewage treatment with high efficiency and recyclability.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jiahuan Hu, Tiantian Zhou, Xiaoxue Zhou, Xiaojie Qin, Weibao Kong, Ji Zhang, Junlong Wang
Summary: Selenylation is an important modification strategy for polysaccharides, and the use of [HNMP]HSO4 as an acid catalyst has been shown to efficiently synthesize Se-GGs with increased selenium content and molecular weight. The selenite groups were found to be located at the C6 position in Se-GGs. The results demonstrate a new synthetic method for preparing functional polysaccharides with a wide range of potential applications.
Article
Food Science & Technology
Emrah Kirtil, Ayca Aydogdu, Tatyana Svitova, Clayton J. Radke
Summary: Biopolymer-based films, particularly those using guar gum, show potential for enhanced physical properties when incorporating orange peel oil and halloysite nanotubes, as well as crosslinking with sodium trimetaphosphate. Despite some decrease in mechanical strength, the addition of oil improves hydrophobicity and water barrier properties, while crosslinking reduces solubility and improves overall film properties.
FOOD PACKAGING AND SHELF LIFE
(2021)
Article
Materials Science, Multidisciplinary
Raj Kumar, Emmanuel Joseph, Atul Chaudhari, Anuya Nisal, Kamendra P. Sharma
Summary: Regenerated silk fibroin (RSF) has attracted attention for its exceptional toughness, strength, and biocompatible nature. However, processing RSF often leads to conformational transformation and loss of toughness. With the use of a dual layer modification, a solvent-free bioconjugate system with a soft solid-liquid transition has been developed, preserving the native-like conformation of RSF.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hironori Izawa, Yuta Toyoshima, Minoru Morimoto, Hiroyuki Saimoto, Shinsuke Ifuku
Summary: The results show that oriented chitosan films prepared by elongation can be applied to surface wrinkling systems via a horseradish peroxidase-catalyzed surface reaction of ferulic acid and drying, resulting in different wrinkle morphologies influenced by drying compression stress.
Article
Biotechnology & Applied Microbiology
Vaibhav A. Mantri, Yashesh Shah, Nikunj Balar, Keval Chavda, Mayur Mavani, Mayur Kolhe, Kanchan Sambhwani, Ramavatar Meena, Kamlaesh Prasad, Monica G. Kavale, Rajendra Singh Thakur
Summary: This study compared different life cycle stages of the red alga Gracilaria dura, focusing on morphological structures, growth performance, agarose characteristics, biochemical, and molecular profiling. Significant differences were found in growth rates and agarose yield among male gametophytes, tetrasporophytes, and cystocarpic female gametophytes. Metabolomic analysis revealed critical differences in alanine, lactate, and isethionic acid among stages, while genetic correlation analysis showed an average polymorphism of 47.02%. The study concludes that characterizing and differentiating isomorphic life phases of G. dura could be valuable for selecting appropriate cultivars for commercial farming and breeding programs.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Chemistry, Physical
Gyanendra Sharma, Rosy Alphons Sequeira, Matheus M. Pereira, Tapan Kumar Maity, Nishith A. Chudasama, Kamalesh Prasad
Summary: The study found that ILs are more advantageous than DESs in terms of the dissolution and stability of DNA, mainly due to the higher dissolution capacity and better hydrogen bonding ability with DNA of ILs as compared to DESs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Jitkumar Bhatt, Rosy Alphons Sequeira, Aliasgar Vohra, Ranjitsinh Vijaysingh Devkar, Tapan Kumar Maity, Kamalesh Prasad
Summary: The sustainable method developed in this study allows for the facile production of nonviral gene vectors using ionic liquids, producing stable nanosized polyplexes that are hemocompatible and noncytotoxic. The one-pot strategy produces no byproducts, maximizing atom economy for bulk production. The single-step process is energy efficient and cost-effective, making it suitable for advanced gene delivery applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Paper & Wood
Mizuki Kishimoto, Hironori Izawa, Hiroyuki Saimoto, Shinsuke Ifuku
Summary: The study successfully obtained chitin nanofibers of different colors using reactive dyes, which are resistant to hot water and detergents and can be mixed to produce a variety of colors. Through evaluation using reflection spectrum and color space, the optimal ratio of reactive dye to chitin was determined to be 5%, while maintaining the morphology of the nanofibers.
Article
Polymer Science
Koichi Tanabe, Hironori Izawa, Shinsuke Ifuku
Summary: Utilizing the emulsion-forming ability of partially deacetylated chitin nanofibers, a composite with polystyrene was prepared, significantly improving the mechanical and thermal properties of polystyrene. The optimal mixing ratio of chitin nanofibers for improving mechanical properties was 7%. The composite material showed good recyclability without a decrease in mechanical properties after hot pressing molding.
Article
Chemistry, Applied
Hironori Izawa, Tomoe Yonemura, Yumi Nakamura, Yuta Toyoshima, Momoka Kawakami, Hiroyuki Saimoto, Shinsuke Ifuku
Summary: This study introduces hierarchical surface wrinkles and bumps fabricated through drying-induced shrinkage. The kappa-carrageenan system shows hierarchical wrinkles, while the iota-carrageenan system exhibits hierarchical bumps.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Hujun Li, Saori Yoshida, Naofumi Mitani, Mayumi Egusa, Momoko Takagi, Hironori Izawa, Teruyuki Matsumoto, Hironori Kaminaka, Shinsuke Ifuku
Summary: This study investigated the potential use of spent mushroom substrate (SMS) in agriculture and successfully isolated chitin/cellulose nanofiber complex (CCNFC) from SMS. Further research revealed that low concentration CCNFC water dispersion exhibited significant plant disease resistance and plant growth promotion activities.
CARBOHYDRATE POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Dagmawi Abebe Zewude, Takako Noguchi, Kimihiko Sato, Hironori Izawa, Shinsuke Ifuku
Summary: In this study, chitin nanoparticles were successfully prepared by alkaline treatment and regeneration, which showed small particle size, high dispersibility, and high heat resistance. Compared to nanofibers, nanoparticles had lower viscosity, allowing for preparation at higher concentrations, and can be easily redispersed in water after concentration.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Organic
Hironori Izawa, Fumika Yasufuku, Tomoko Matsumoto, Shinsuke Ifuku, Hiroyuki Saimoto, Masato Sumita
Summary: A novel colorimetric sensor system utilizing the photo-induced colorimetric reaction of TENDI is demonstrated for the detection and quantification of carboxylate derivatives. The presence of CH3COONa induces a photo-induced colorimetric reaction in the TENDI solution under UV irradiation, enabling the detection of carboxylate derivatives. Additionally, TENDI has the ability to distinguish the structural features of carboxylate derivatives based on color tone.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Hironori Izawa, Shota Ishisaka, Hiroyuki Saimoto, Shinsuke Ifuku
Summary: The effects of the physical properties of skin layers and substrates on drying-induced surface wrinkling were investigated. It was found that the size of surface wrinkles formed by different polymers on skin layers varied. The hardness of the skin layers was the primary factor determining wrinkle size.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2022)
Article
Materials Science, Composites
Dagmawi Abebe Zewude, Hironori Izawa, Shinsuke Ifuku
Summary: Chitin nanofibers were prepared by mechanically grinding chitin using a ball mill. The optimal conditions for efficient preparation were determined by analyzing the resulting water dispersion and cast film. The length and width of the nanofibers were measured, and it was found that the size of the balls, total ball weight, and milling time all had an impact on the grinding efficiency and fiber properties.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Materials Science, Composites
Kana Kishida, Toshifumi Mizuta, Hironori Izawa, Shinsuke Ifuku
Summary: Crickets are gaining attention as a low environmental impact nutrient source. In this study, chitin isolated from crickets was successfully converted into nanochitin, which had larger fiber width and smaller crystal size compared to crab shells. The shape differences affected the physical properties of the dispersion.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Polymer Science
Hironori Izawa, Ayaka Yagi, Ryo Umemoto, Shinsuke Ifuku
Summary: In this study, water-soluble guanidinylated chitosan (WGCS) is introduced as a potential material for protein delivery systems to improve the cellular internalization of protein/peptide drugs. WGCS, composed mainly of guanidinylated chitosan, chitosan, and chitin units, showed higher internalization into HeLa cells compared to common chitosan. The increased internalization was attributed to the guanidinylation and electrostatic interactions between WGCS and the protein.
Article
Engineering, Biomedical
Nowshin Farzana Khan, Hideaki Nakamura, Hironori Izawa, Shinsuke Ifuku, Daisuke Kadowaki, Masaki Otagiri, Makoto Anraku
Summary: Researchers evaluated the in vivo safety of GCS and observed no deleterious effects after a single oral administration of an excessive dose. They also found that GCS had a slower migration rate in the gastrointestinal tract and exhibited mucoadhesive properties. Future studies will focus on using GCS to improve absorption of poorly water-soluble and poorly membrane-permeable drugs.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
