Results 51 to 60 of about 16,785,729 (104)

A Simple Isolation Method for the Major Catechins in Green Tea Using High-Speed Countercurrent Chromatography

, 2016
An efficient protocol for the preparative purification of the major tea catechins (−)-epicatechin gallate (3) and epigallocatechin gallate (5) has been developed, employing liquid−liquid partitioning, high-speed countercurrent chromatography, and gel ...
Sven Adler (2950740), Matthias Hamburger (38424), Dietmar Baumann (3060249)   +2 more
core   +1 more source

Sex‐Specific Regulation of Glycemic Homeostasis by Theabrownin from Pu‐erh Tea

Advanced Science, Volume 13, Issue 38, 9 July 2026.
Pu‐erh tea's key component, theabrownin (TB), lowers blood glucose in a sex‐specific manner. In females, estrogen boosts intestinal MUC2 production, which dramatically enhances TB's ability to inhibit the carbohydrate‐digesting enzyme α‐glucosidase.
Yang Li, Junliang Kuang, Dan Zheng, Jieyi Wang, Kun Ge, Chun Qu, Xiaojiao Zheng, Zhenxing Ren, Fengjie Huang, Mingliang Zhao, Yimin Sun, Huiheng Zhang, Keke Ding, Xixi Xia, Yajun Tang, Lu Liu, Jian Zhou, Fei Gao, Xiaohui Ma, Yongquan Xu, Guoxiang Xie, Aihua Zhao, Wei Jia   +22 more
wiley   +1 more source

Asymmetric Dialysis: Truly Unified and Simultaneous Single‐Pass Concentration and Buffer Exchange

Biotechnology and Bioengineering, Volume 123, Issue 7, Page 1814-1824, July 2026.
Asymmetric dialysis, a novel one‐step continuous process combining ultrafiltration and diafiltration, achieves high product concentrations (up to 200 g/L) with low pressures and reduces buffer consumption by 75% compared to conventional methods. This sustainable, low‐cost technology demonstrates significant potential for integration into continuous ...
Ujwal Patil, Michelle Chen, Irina Ramos, Jon Coffman   +3 more
wiley   +1 more source

亚油酸分离纯化技术研究进展Progress on separation and purification technology of linoleic acid

Zhongguo youzhi, 2022
亚油酸属ω-6型多不饱和脂肪酸，具有独特的生理功能，与人体健康密切相关。由于亚油酸大多来源于天然动植物油脂，其含量尚不能满足食品和制药业的需求，有效分离纯化亚油酸已成为近年来的研究热点。为给亚油酸的分离纯化研究提供参考，综述了近年来国内外亚油酸分离纯化技术的研究进展，系统介绍了尿素包合法、硝酸银硅胶柱色谱法、分子蒸馏法、脂肪酶酶解法、溶剂冷冻结晶法、高速逆流色谱法及耦合法的分离原理及研究成果，并分析了各分离纯化方法的优缺点。两种或多种分离纯化技术耦合可优势互补，提高分离效率，淀粉 ...
白希，陈爽，周灿兰，柏茹梦，平宇杰，杜为军 BAI Xi，CHEN Shuang, ZHOU Canlan，BAI Rumeng, PING Yujie, DU Weijun
doaj   +1 more source

Chiral (Stereoselective) Drugs, Asymmetric Synthesis, and Racemic Resolution Methods

Chirality, Volume 38, Issue 7, July 2026.
Chirality is crucial in drug development since both biological targets in the organism and the majority of pharmaceutical compounds are chiral. The synthesis and resolution of chiral compounds are critical steps while developing chiral drugs. Asymmetric synthesis and racemic resolution are the two most common methods for obtaining enantiopure drugs ...
Burcu Karayavuz, Cigdem Karaaslan Kirmizioglu   +1 more
wiley   +1 more source

HPLC-ESI-QTOF-MS/MS Analysis of Artemisia cina Leaves Aqueous Extract and Flavonoid Isolation Using High-speed Countercurrent Chromatography [PDF]

Acta Poloniae Pharmaceutica
Artemisia cina Berg ex Poljakov, a shrubby plant endemic to the semi-arid areas of Kazakhstan, has as a long history of being used in traditional medicines as an antitumour, antifungal and anthelmintic agent.
Sonwabiso Tshunungwa, Bashaer Alsharif, Tolkyn Bekezhanova, Kulzada Begalinovna Bazhykova, Wirginia Kukula-Koch, Fabio Boylan   +5 more
doaj   +1 more source

Advances in Eco‐Friendly Extraction of Fruit Bioactive Compounds: Technologies, Challenges and Future Directions

Analytical Science Advances, Volume 7, Issue 1, June 2026.
Fruit bioactive compounds offer antioxidant, anti‐inflammatory, and preventive benefits, yet extraction is hindered by poor solubility and conventional methods using toxic solvents and high energy. This review evaluates traditional and advanced eco‐friendly technologies, highlighting efficiency, selectivity, and sustainability.
Abadi Gebreyesus Hndeya, Desta Berhe Sbhatu, Gebreselema Gebreyohannes   +2 more
wiley   +1 more source

Experimentally Overcoming the Limitations of Methanol Synthesis From Syngas by Sorption Enhancement

Chemical Engineering &Technology, Volume 49, Issue 6, June 2026.
A deep analysis of the sorption‐enhanced reaction process (SERP) for methanol synthesis from CO2/H2 syngas with the experimental study of many parameters. ABSTRACT Methanol is an excellent candidate as a low carbon footprint fuel for the energy transition.
Enrico Antonuccio, Frédéric Bornette, Guillaume Aubert, David Edouard, Pascal Fongarland   +4 more
wiley   +1 more source

Identification and In Vitro Cytotoxic Evaluation of (E)‐Nerolidol From Piper mollicomum Kunth Essential Oil in Breast and Lung Cancer Cell Lines

Chemistry &Biodiversity, Volume 23, Issue 5, May 2026.
This study integrates chemical characterization and biological evaluation of Piper mollicomum. Ethanolic and dichloromethanic extracts and the leaf essential oil were analyzed, revealing a sesquiterpene‐rich composition with (E)‐nerolidol as the major compound.
Letícia Barbosa Santos, Raquel Speziali Aroeira Marques dos Santos, Nayara Couto Moreira, Gustavo Pereira Cosenza, Paula Mendonça Leite, Elaine Maria de Souza‐Fagundes, Mônica Cristina de Oliveira, Izabella Thaís da Silva, Rachel Oliveira Castilho   +8 more
wiley   +1 more source

Sample Preparation and Separation of Lignans by Liquid Chromatography

Journal of Separation Science, Volume 49, Issue 5, May 2026.
ABSTRACT Lignans are important phytochemicals found mostly in the resins of coniferous trees, but are also introduced into human diets through foods such as sesame seeds and extra‐virgin olive oil. They are pharmacologically interesting mainly because of their antioxidant activities, and they have also been shown to have cytotoxic and antimicrobial ...
Miikka Paloluoto, Susanne K. Wiedmer
wiley   +1 more source