Results 41 to 50 of about 1,650 (166)

Ultrasonic/cellulase-assisted extraction of polysaccharide from Garcinia mangostana rinds and its carboxymethylated derivative

Ultrasonics Sonochemistry, 2023
Response surface methodology was selected to explore the ultrasonic-assisted cellulase extraction conditions of Garcinia mangostana rind polysaccharides (GMRPs), and the optimum values of each condition were as follows: ratio of raw material to liquid of
Zhenjie Tang, Gangliang Huang, Hualiang Huang   +2 more
doaj   +1 more source

A Solid‐Phase Approach to Chiral C2‐Substituted Cyclen and DOTA‐Like Lanthanoid Ligands

Chemistry – A European Journal, EarlyView.
Chiral C2‐substituted cyclen derivatives have been designed and synthesized from chiral cyclic peptoids. Their conversion into the corresponding DOTA‐type ligands opens new avenues for the development of high‐relaxivity MRI contrast agents. ABSTRACT Magnetic resonance imaging (MRI) is a powerful diagnostic modality that relies on Gd+3‐based contrast ...
Rosaria Schettini, Roberta Napolitano, Alberto Fringuello Mingo, Federica Buonsanti, Giovanni Pierri, Consiglia Tedesco, Chiara Costabile, Giorgio Della Sala, Irene Izzo, Francesco De Riccardis   +9 more
wiley   +1 more source

Lignocellulosic Triboelectric Materials for Energy Harvesting and Emerging Applications: A Review on Lignin‐Molecular Engineering toward Improved Performance

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Contrasting sustainable biomass with depleting petroleum resources, this review charts the evolutionary timeline of lignin‐based TENGs. We systematically evaluate their fundamental mechanisms, enhancement strategies, and applications in green self‐powered electronics.
Yuxin Yang, Boyu Du, Yuwen Wang, Tian Tang, Yuxuan Xie, Jiajun Zhang, Yajun Zhang, Jingyu Xu, Xing Wang, Chuanyin Xiong   +9 more
wiley   +1 more source

Effects of Enzymolysis Combined with Chemical Modification on Physicochemical Properties and Hypoglycemic Activity of Oil Palm Kernel Expeller Dietary Fiber

Shipin gongye ke-ji
This study investigated the effects of enzymolysis combined with carboxymethylation or acetylation modification on the chemical composition, structure, physicochemical properties, and hypoglycemic activity of oil palm kernel expeller dietary fiber.
Nan WANG, Xinling SONG, Biao MA, Xinyu LIU, Yixuan ZHANG, Yajun ZHENG, Hao WANG   +6 more
doaj   +1 more source

Preparation and characterization of carboxymethylchitosan

Polímeros, 2005
Chitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6).
Fernanda R. de Abreu, Sérgio P. Campana-Filho   +1 more
doaj   +1 more source

Ultrasound-assisted extraction and properties of polysaccharide from Ginkgo biloba leaves

Ultrasonics Sonochemistry, 2023
Response surface methodology (RSM) was used to optimize the ultrasound-assisted extraction conditions of Ginkgo biloba leaves polysaccharide (GBLP). The optimum extraction conditions for the ultrasound-assisted extraction of GBLP were obtained as liquid ...
Junchi Li, Zhongxuan Chen, Huimin Shi, Jie Yu, Gangliang Huang, Hualiang Huang   +5 more
doaj   +1 more source

Selective N‐Functionalization of Pyrazoles

European Journal of Organic Chemistry, EarlyView.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek, Matthias Schrader, Christopher J. Teskey   +2 more
wiley   +1 more source

Preparation of Transparent and Thick CNF/Epoxy Composites by Controlling the Properties of Cellulose Nanofibrils

Nanomaterials, 2020
Cellulose nanofibrils (CNFs) have been used as reinforcing elements in optically transparent composites by combination with polymer matrices. In this study, strong, optically transparent, and thick CNF/epoxy composites were prepared by immersing two or ...
Shin Young Park, Simyub Yook, Sooim Goo, Wanhee Im, Hye Jung Youn   +4 more
doaj   +1 more source

Comparison of the Physicochemical Properties of Carboxymethyl Agar Synthesized by Microwave-Assisted and Conventional Methods

Gels, 2022
The microwave-assisted carboxymethylation of agar to improve its physicochemical properties was investigated. Microwave power, reaction time, and temperature, ethanol concentration, and amounts of chloroacetic acid and sodium hydroxide were assessed for ...
Bo Qi, Shaoling Yang, Yongqiang Zhao, Yueqi Wang, Xianqing Yang, Shengjun Chen, Yanyan Wu, Chuang Pan, Xiao Hu, Chunsheng Li, Lunan Wang   +10 more
doaj   +1 more source

Proteoforms in Disease: Biomedical Applications of Top‐Down Proteomics

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The proteome is a dynamic landscape of proteoforms arising from genetic mutations, alternative splicing, and post‐translational modifications (PTMs), which collectively drive biological function and disease phenotypes. Mass spectrometry (MS)‐based proteomics has emerged as an essential technique for elucidating this molecular complexity ...
Holden T. Rogers, Zachery R. Gregorich, Megan S. Gant, Zhan Gao, Julia Chamot‐Rooke, Ying Ge   +5 more
wiley   +1 more source