Results 71 to 80 of about 462,385 (285)

Improved Method for Isolation of Lycopsamine from Roots of Comfrey ()

Natural Product Communications, 2012
An improved method for the isolation and purification of pyrrolizidine alkaloids from comfrey ( Symphytum officinale L.) roots was developed, introducing very fast, selective and ion residue-free reduction of N -oxides followed by ion-exchange ...
Damjan Janeš, Boštjan Kalamar, Samo Kreft   +2 more
doaj   +1 more source

Determination of the tryptophan content of proteins by ion exchange chromatography of alkaline hydrolysates.

Journal of Biological Chemistry, 1972
A study of the variables in techniques for alkaline hydrolysis of proteins and for chromatographic analysis of the products has led to a method for the accurate determination of tryptophan. Quantitative recoveries of tryptophan are obtained when proteins
T. Hugli, S. Moore
semanticscholar   +1 more source

Mechanically Robust and Depolymerizable Polyesters With Near‐Complete Monomer Recovery for Circular Additive Manufacturing

Advanced Materials, EarlyView.
A sustainable δ‐lactone‐based polymer platform enables multimodal additive manufacturing through DLP, DIW, and FFF, combining tunable crystallinity, photocurable networks, mechanical robustness, and functional response. The printed materials can be mechanically reprocessed and chemically depolymerized into recoverable monomers, demonstrating a closed ...
Farzad Gholami, Rampi Ramprasad, H. Jerry Qi   +2 more
wiley   +1 more source

β-Lactoglobulin separation from whey protein: A comprehensive review of isolation and purification techniques and future perspectives

Journal of Dairy Science
: Cow milk, although rich in essential nutrients, is a well-known food allergen that can cause allergic reactions in infants and young children. β-Lactoglobulin accounts for 10% of the total protein in milk and 50% of the whey protein, which has high ...
Z.L. Wang, X. Tang, M. Wang, Y.X. She, B.R. Yang, Q.H. Sheng, A.M. Abd El-Aty   +6 more
doaj   +1 more source

Stabilized Bi(III) Sites Direct *NH2OH Pathway for Efficient Cyclohexanone Oxime Electrosynthesis

Advanced Materials, EarlyView.
The electron‐buffering effect stabilizes Bi3+ sites under electroreductive conditions, preserving a favorable interfacial water configuration that sustains the selective *NH2OH pathway and enables efficient cyclohexanone oxime electrosynthesis. ABSTRACT Coupling electrocatalytic nitrite reduction reaction (NO2−RR) with cyclohexanone conversion enables ...
Zichao Xi, Yan Du, Haijing Li, Jian Shang, Jinxiao Wu, Peng Li, Huimin Yu, Tianyi Ma, Huanyu Jin   +8 more
wiley   +1 more source

Improvement in protein separation by pH excursion modulated ion-exchange chromatography

Journal of Chromatography Open
The transient change in pH during the elution step in ion exchange chromatography is commonly referred to as pH excursion. Acidic pH excursion is usually observed during salt-based elution in cation exchange chromatography.
Raja Ghosh
doaj   +1 more source

Decoupling Activation and Preservation: Architectural Design Principles of Organic Frameworks for Selective Photocatalytic Methane Oxidation

Advanced Materials, EarlyView.
Selective methane (CH4) photooxidation emerges from architectural decoupling of activation and preservation. Programmable organic semiconductor frameworks spatially organize oxidative flux and intermediate residence, separating reaction zones from product domains to synchronize activation strength with stabilization and establish a selective oxidation ...
Minxian Zhang, Jie He, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Recent Advances in Ferrite‐Based Materials for Biomedical Applications: A Comprehensive Review

Advanced Materials, EarlyView.
Ferrite nanoplatforms are presented as tunable biomedical materials in which synthesis control, cation engineering, defect/morphology regulation, and surface functionalization govern structure–property–bioactivity relationships. These design strategies enable multifunctional applications including MRI contrast, magnetic hyperthermia, targeted drug ...
Pramod D. Mhase, Varsha C. Pujari, Akash V. Fulari, Sunil M. Patange, Sean Li, Danyang Wang, Sagar E. Shirsath   +6 more
wiley   +1 more source

Charge‐Encoded Sidechains Enable Deterministic Ion Ingress and Memory Retention in Organic Electrochemical Synaptic Transistors

Advanced Materials, EarlyView.
Organic electrochemical synaptic transistors based on sidechain‐engineered conjugated polyelectrolytes reveal that cationic sidechains enable efficient volumetric ion penetration and dense backbone doping, leading to enhanced transconductance and long‐term synaptic retention.
Haim Kwon, Jihyeon You, Chaeyeon Park, Dong Gue Roe, Ji Hyun Jung, Jeong Ho Cho, Han Young Woo   +6 more
wiley   +1 more source

Enhancing Selectivity of Protein Biopharmaceuticals in Ion Exchange Chromatography through Addition of Organic Modifiers. [PDF]

Int J Mol Sci, 2023
Duivelshof BL, Bouvarel T, Pirner S, Larraillet V, Knaupp A, Koll H, D'Atri V, Guillarme D.   +7 more
europepmc   +1 more source