Results 1 to 10 of about 6,678,115 (243)

Optical Rotation—A Reliable Parameter for Authentication of Honey? [PDF]

Molecules, 2022
The controversial question of whether optical rotation data can be used to distinguish floral from honeydew honey was investigated. Specific optical rotation angles were determined for 41 honey samples, including floral, honeydew, and adulterated honey ...
Dessislava Gerginova, Vanya Kurteva, Svetlana Simova   +2 more
doaj   +4 more sources

Complexation of Boronic Acid with Chiral α-Hydroxycarboxylic Acids and the Ability of the Complexes to Catalyze α-Hydroxycarboxylic Acid Esterification

Molecules, 2023
The complexation of boric acid (BA) with various α-hydroxycarboxylic acids (HCAs) was examined by analyzing the change in the optical rotation after the addition of BA to aqueous HCA solutions, and the catalytic properties of the complexes were examined ...
Zhonglei Meng, Rongxiu Qin, Rusi Wen, Junkang Xie, Haiyan Chen, Guiqing Li   +5 more
doaj   +1 more source

Ligiamycins A and B, Decalin-Amino-Maleimides from the Co-Culture of Streptomyces sp. and Achromobacter sp. Isolated from the Marine Wharf Roach, Ligia exotica

Marine Drugs, 2022
Streptomyces sp. GET02.ST and Achromobacter sp. GET02.AC were isolated together from the gut of the wharf roach, Ligia exotica, inhabiting the intertidal zone of the west coast of Korea.
Hyung-Ju Lim, Joon Soo An, Eun Seo Bae, Eunji Cho, Sunghoon Hwang, Sang-Jip Nam, Ki-Bong Oh, Sang Kook Lee, Dong-Chan Oh   +8 more
doaj   +1 more source

Polarimetric Measurements of Surface Chirality Based on Linear and Nonlinear Light Scattering

Frontiers in Chemistry, 2021
A molecule, molecular aggregate, or protein that cannot be superimposed on its mirror image presents chirality. Most living systems are organized by chiral building blocks, such as amino acids, peptides, and carbohydrates, and any change in their ...
Ankur Gogoi, Surajit Konwer, Guan-Yu Zhuo, Guan-Yu Zhuo   +3 more
doaj   +1 more source

Comparative Analysis of Physical and Chemical Properties of Differently Obtained Zn—Methionine Chelate with Proved Antibiofilm Properties (Part II)

Pharmaceutics, 2023
The previously demonstrated activity of aqueous solutions of methionine and zinc salts against biofilms of uropathogenic bacteria prompted us to investigate the structure and properties of zinc methionine complex obtained from such solutions.
Alla V. Marukhlenko, Vladimir N. Tumasov, Leonid A. Butusov, Georgy A. Shandryuk, Mariya A. Morozova   +4 more
doaj   +1 more source

Calculations of optical rotation: Influence of molecular structure [PDF]

Journal of the Serbian Chemical Society, 2012
Ab initio Hartree-Fock (HF) method and Density Functional Theory (DFT) were used to calculate the optical rotation of 26 chiral compounds. The effects of theory and basis sets used for calculation, solvents influence on the geometry and values of ...
Yu Jia, Cao Yu, Song Hang, Wang Xianlong, Yao Shun   +4 more
doaj   +1 more source

Synthesis and luminescent properties of novel red-emitting Eu(III) complexes based on alanine aliphatic derivatives with different optical rotation

Materials Research Express, 2020
A series of novel luminescent amino acid-rare earth complexes (denoted as Eu(L/D-SA) _3 -Phen) have been successfully synthesized. Using stearoyl alanine (denoted as SA) with different optical rotations as the first ligand and 1,10-phenanthroline (Phen ...
Xue Zhang, Andy Xie, Yuewen Wu, Zihan Gao, Hongde Xie   +4 more
doaj   +1 more source

Determination of Optical Rotation Based on Liquid Crystal Polymer Vortex Retarder and Digital Image Processing

IEEE Access, 2022
A polarimeter for optical rotation (OR) detection and optical active media measurement based on m=1 Zero-Order Liquid Crystal Polymer Vortex Half-Wave Retarder (LCPVR) and Digital Image Processing (DIP) was proposed in this letter.
Sijia Huang, Site Luo, Yang Yang, Ting Li, Yan Wu, Qiongfang Zeng, Huihui Huang   +6 more
doaj   +1 more source

High-Throughput Chiral Molecule Determination Based on Multi-Channel Weak Measurement

IEEE Photonics Journal, 2021
A multi-channel high-throughput chiral molecule determination method based on weak value amplification (WVA) is proposed for the first time. This method can be used for high-throughput and high-precision determination of chiral molecule.
Lixuan Shi, Yang Xu, Zhen Qiao, Xinhui Xing, Zhangyan Li, Chongqi Zhou, Suyi Zhong, Le Liu, Tian Guan, Yonghong He   +9 more
doaj   +1 more source

High-Precise Measurement of Optical Rotatory Dispersion Based on Weak Value Amplification

IEEE Photonics Journal, 2021
Chiroptical signals (generally very weak) play significant roles in chiral discrimination that bring great benefits in biochemistry, pharmacy, chemical, and so on. But, high-precise chiroptical detection is still a challenge.
Jingyi Shao, Lan Luo, Yu He, Jiacheng You, Yurong Liu, Yuyuan Wang, Zhiyou Zhang   +6 more
doaj   +1 more source