Article
Biochemistry & Molecular Biology
Sanja Radman, Igor Jerkovic
Summary: The analysis of volatile organic compounds (VOCs) in two brown algae from the Adriatic Sea revealed differences between fresh and air-dried samples, particularly in the percentages of fatty acids and their derivatives, terpenes, and aliphatic compounds.
Article
Biochemical Research Methods
Catherine E. Sansom, Nigel B. Perry
Summary: Hydrogen is the most efficient carrier gas for gas chromatography, but there are rare reports of artefact formation by hydrogenation of unsaturated compounds on GC. The study found that unsaturated plant volatiles may be hydrogenated on HS-SPME-GC when using H-2 carrier gas with SPME fibre coatings containing DVB polymer or CAR porous particles. It is recommended to conduct parallel analyses with He and H-2 carrier gases or use PDMS-only coated fibres when developing HS-SPME-GC methods for plant volatiles.
PHYTOCHEMICAL ANALYSIS
(2022)
Article
Biochemical Research Methods
Zhibo Fu, Qiangqiang Jia, Hongyang Zhang, Lu Kang, Xuezhi Sun, Min Zhang, Yuerong Wang, Ping Hu
Summary: A new method for simultaneous quantification of eleven SCFAs by derivatization combined with SPME and GC-MS/MS was developed, showing satisfactory linearity, low LOD and LOQ, as well as good precision and recovery rates in validation.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Food Science & Technology
Jiahui Chen, Lina Tao, Ting Zhang, Jingjing Zhang, Tingting Wu, Donglei Luan, Ling Ni, Xichang Wang, Jian Zhong
Summary: This study used different techniques to analyze the effects of four thermal processing methods on the aroma profiles of acidity regulator-treated tilapia muscles, finding that thermal processing significantly and differently decreased the types of volatile organic compounds in the muscles.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Food Science & Technology
Shouhui Wei, Jian Lyu, Lijuan Wei, Bojie Xie, Jinmei Wei, Guobin Zhang, Ju Li, Chengfei Gao, Xuemei Xiao, Jihua Yu
Summary: This study systematically optimized the HS-SPME conditions for the analysis of volatiles in coriander aerial part using chemometric approaches. A total of 67 volatiles were identified, with 21 characteristic volatiles contributing significantly to coriander flavor. The research provided advanced technical support for the extraction and analysis of coriander volatiles.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Yang-Yang Yan, Chu-Fan Wang, Xing Fan, Zhen-Yu Gao, Wen-Han Wei, Guo-Ming Zhao, Peng Liang, Ran-Ran Hou, Xian-Yong Wei
Summary: Due to the low concentration and detection limit, many compounds in the thermal dissolution extract of coals cannot be detected. Therefore, the introduction of SPME for sampling is necessary to enrich compounds with similar structures and exclude interferences. In this study, SPME with a PDMS coating successfully enriched partial species in the TD extract of Zhaotong lignite and increased the content of aliphatic hydrocarbons.
Article
Chemistry, Analytical
Tahmine Baheri, Yadollah Yamini, Maryam Shamsayei, Mahmoud Tabibpour
Summary: In this study, a copper-based metal-organic framework (HKUST-1) was used for the first time to preconcentrate trace amounts of addictive drugs in biological samples. The prepared coating showed good extraction efficiency due to its large surface area and pi-pi stacking interaction with selected analytes, leading to validated method with reasonable determination coefficient and suitable linear dynamic range for drug determination in water, urine, and plasma samples. The method demonstrated reliable and consistent performance for the analysis of drugs in biological samples.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Chemistry, Analytical
Shu-Han Chang, Hui-Yu Ho, Ching-Chia Chang, Chi-Zong Zang, Ya-Hui Hsu, Mei-Chih Lin, Su-Hsiang Tseng, Der-Yuan Wang
Summary: Probable carcinogenic nitrosamine impurities, such as N-nitrosodiethylamine (NDEA) and N-nitrosodimethylamine (NDMA), have been detected in various pharmaceuticals in recent years. This study presents a gas chromatograph tandem mass (GC-MS/MS) method, using the headspace-solid phase microextraction (HS-SPME) sampling mode, for monitoring 14 nitrosamines in 44 pharmaceuticals. The optimized HS-SPME conditions achieved a limit of quantification (LOQ) of 0.05 μg/g for nitrosamines in pharmaceutical matrices.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Environmental Sciences
Aray Zhakupbekova, Nassiba Baimatova, Elefteria Psillakis, Bulat Kenessov
Summary: A new method for quantification of unsymmetrical dimethylhydrazine transformation products in sand samples using vacuum-assisted headspace solid-phase microextraction without addition of water followed by gas chromatography-mass spectrometry is proposed. The method offers lower detection limits, better accuracy and precision, and similar or lower cost of sample preparation compared to existing methods.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Matthew T. Bingman, Josephine L. Hinkley, Colin P. P. Bradley II, Callie A. Cole
Summary: This study monitored the volatile organic compounds (VOCs) in cider production and revealed the influence of lees resting and dry hopping on cider aroma. The findings suggest that different hop varieties and processing steps significantly alter the identity and concentration of aroma-important VOCs in dry-hopped cider.
APPLIED SCIENCES-BASEL
(2022)
Article
Infectious Diseases
Hong Luo, Yaping Hang, Hongying Zhu, Qiaoshi Zhong, Suqin Peng, Shumin Gu, Xueyao Fang, Longhua Hu
Summary: This study used HS-SPME/GC-MS to investigate the VOCs released by carbapenemase-producing CRKP, and identified 3-methyl-1-butanol as a potential biomarker for screening carbapenemase-producing CRKP strains.
INFECTION AND DRUG RESISTANCE
(2023)
Article
Chemistry, Multidisciplinary
Xinlong Wu, Wei Li, Chao Li, Jiaxin Yin, Tong Wu, Min Zhang, Limin Zhu, Hanjiang Chen, Xilian Zhang, Songtao Bie, Fangyi Li, Xinbo Song, Xingchu Gong, Heshui Yu, Zheng Li
Summary: This study developed a method for quickly identifying the components of Acori tatarinowii rhizome (ATR) using headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) and headspace solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) to analyze and characterize the volatile organic compounds (VOCs) of ATR. The results showed that these methods can effectively identify the quality of ATR and establish its fingerprint and heatmap.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Samuel Macario Padilla-Jimenez, Maria Valentina Angoa-Perez, Hortencia Gabriela Mena-Violante, Guadalupe Oyoque-Salcedo, Jose Luis Montanez-Soto, Ernesto Oregel-Zamudio
Summary: This study investigated organic volatile markers of three strawberry varieties during different stages of maturation using gas chromatography-mass spectrometry. The dynamic changes in the concentration of certain compounds during maturation were observed, and these compounds were identified as possible volatile markers to measure the ripeness of strawberry fruits. The findings underscore the importance of harvest timing and maturation stage in preserving or enhancing the desirable aromatic characteristics of strawberries.
Article
Chemistry, Medicinal
Qundong Liu, Katsuko Komatsu, Kazufumi Toume, Shu Zhu, Ken Tanaka, Shigeki Hayashi, Naoko Anjiki, Nobuo Kawahara, Akihito Takano, Katsunori Miyake, Norio Nakamura, Suchada Sukrong, Mangestuti Agil, Indira Balachandra
Summary: This study aimed to characterize the essential oil compositions of 12 Curcuma species and detect the compositional variation among different species, as well as between plant specimens and genetically validated crude drug samples. The results showed that plant specimens of the same species exhibited similar essential oil patterns regardless of their geographical sources. Marker compounds identified through orthogonal partial least squares-discriminant analysis were able to distinguish each group or species.
JOURNAL OF NATURAL MEDICINES
(2023)
Article
Chemistry, Multidisciplinary
Jingyi Xie, Xuejuan Li, Wei Li, Hui Ding, Jiaxin Yin, Songtao Bie, Fangyi Li, Chengwang Tian, Lifeng Han, Wenzhi Yang, Xinbo Song, Heshui Yu, Zheng Li
Summary: In this study, headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) and headspace solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) were used to comprehensively analyze the volatile organic compounds (VOCs) of fresh and dried P. frutescens in different parts. The findings provide a reference for evaluating the quality and exploring the edible and medicinal effects of P. frutescens.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.