Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Analysis of dog meat adulteration in beef meatballs using non-targeted UHPLC-Orbitrap HRMS metabolomics and chemometrics for halal authentication study
The objective of this research was to develop an analytical method for halal authentication testing of beef meatballs (BM) from dog meat (DM) using a non-targeted metabolomics approach employing liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and chemometrics. The differentiation of authentic BM from that adulterated with DM was successfully performed using partial least square-discriminant analysis (PLS-DA) with high accuracy (R2X = 0.980, and R2Y = 0.980) and good predictivity (Q2 = 0.517). In addition, partial least square (PLS) and orthogonal PLS (OPLS) were successfully used to predict the DM added (...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 14, 2023 Category: Chemistry Authors: Anjar Windarsih Nor Kartini Abu Bakar Abdul Rohman Yuny Erwanto Source Type: research

Simultaneous speciation analysis of arsenic and iodine in human urine by high performance liquid chromatography-inductively coupled plasma mass spectrometry
Anal Sci. 2023 Dec 13. doi: 10.1007/s44211-023-00472-9. Online ahead of print.ABSTRACTA high-performance liquid chromatography-inductively coupled plasma mass spectrometry-based method was developed for the simultaneous determination of four iodine species (i.e. iodate, 3-iodo-tyrosine, 3,5-diiodo-tyrosine, and iodide) and six arsenic species (i.e. arsenobetaine, arsenite, dimethylarsinic acid, arsenocholine, methylarsonic acid, and arsenate) in human urine. The chromatographic separation was performed on a Dionex IonPac As7 anion exchange column. The mobile phase was initiated with 0.5 mmol/L ammonium carbonate solution, ...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 13, 2023 Category: Chemistry Authors: Shaomin Zhou Heng Wang Jun Tang Heng Wang Jianbo Yan Source Type: research

A fluorescence-based binding assay for proteins using the cell surface as a sensing platform
Anal Sci. 2023 Dec 13. doi: 10.1007/s44211-023-00476-5. Online ahead of print.ABSTRACTProtein-protein interaction (PPI) analysis is very important for elucidating the functions of proteins because many proteins execute their functions in living cells by interacting with one another. In PPI analysis, methods using the sensor chips are widely employed to obtain quantitative data. However, these methods require that the target proteins be immobilized on the sensor chips, and the immobilization processes can affect the binding of the target proteins to their binding partners. In the present work, we propose a PPI analysis syst...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 13, 2023 Category: Chemistry Authors: Kazuki Hirano Shinji Sueda Source Type: research

Solidification characteristics of solid biofuel densified by two-step torrefaction process
In this study, an innovative densification molding method is proposed; it uses a two-step torrefaction process with a high CO2 reduction effect. The molding method consists of the following two-step torrefaction process at torrefaction temperatures of 463-773 K: In the first step, raw biomass is torrefied to remove some of the volatile matter that inhibits densified molding. In the second step, the torrefied biomass is densified at the above temperature. The purpose of the second torrefaction step is to further enhance the fuel ratio due to the conversion of volatile matter to fixed carbon and to develop the thermal soften...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 13, 2023 Category: Chemistry Authors: Takahiro Murakami Satoru Mizuno Toru Sawai Source Type: research

A colorimetric probe for the detection of hydrazine and its application
Anal Sci. 2023 Dec 12. doi: 10.1007/s44211-023-00473-8. Online ahead of print.ABSTRACTA colorimetric probe was developed to detect N2H4 content based on the colour change in natural light, and the recognition mechanism is the N2H4 cutting the ester bond of probe 1. As the N2H4 concentration increases, the Ultraviolet absorption ratio (A352nm/A505nm) of the probe solution was gradually increases, and the colour of the solution changed from colourless to pink under natural light. The detection limit of probe 1 for N2H4 was 0.1 μM. The probe can also be applied to test paper detection, and the test paper of probe was changed...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 12, 2023 Category: Chemistry Authors: Jingyi Feng Ning Duan Shaoxiang Yang Hongyu Tian Baoguo Sun Source Type: research

Preparation of a novel MOF-POPM and its application in online purification and enrichment of oleanolic acid in medicinal plants
Anal Sci. 2023 Dec 12. doi: 10.1007/s44211-023-00465-8. Online ahead of print.ABSTRACTIn present work, a method for enrichment, purification, and content determination of oleanolic acid (OA) in medicinal plants was established based on on-line solid phase extraction (SPE). A metal organic frameworks-porous organic polymer monolith (MOF-POPM) was prepared with functionalized UiO-66-(OH)2 as monomer and was used as SPE column for online enrichment and purification of OA. The ratio of adsorbent, enriching and eluting solvent, mobile phase pH, and flow rate had been systematically investigated. Under the optimum conditions, th...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 12, 2023 Category: Chemistry Authors: Miaomiao Zhang Xuanwen Wei Ligai Bai Haiyan Liu Source Type: research

Rapid classification of whole milk powder and skimmed milk powder by laser-induced breakdown spectroscopy combined with feature processing method and logistic regression
Anal Sci. 2023 Dec 11. doi: 10.1007/s44211-023-00467-6. Online ahead of print.ABSTRACTWhole milk powder and skimmed milk powder are suitable for different groups of people due to their differences in composition. Therefore, a rapid classification method for whole milk powder and skimmed milk powder is urgently needed. In this paper, a novel strategy based on laser-induced breakdown spectroscopy (LIBS) and feature processing methods combined with logistic regression (LR) was constructed for the classification of milk powder. A LR classification model based on mini-batch gradient descent (MGD) was employed first. As indicate...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - December 11, 2023 Category: Chemistry Authors: Yu Ding Wen-Jie Chen Jing Chen Lin-Yu Yang Yu-Feng Wang Xing-Qiang Zhao Ao Hu Yan Shu Mei-Ling Zhao Source Type: research