Unraveling the Difference in the Composition/Content of the Aroma Compounds in Different Tobacco Leaves: For Better Use by Tiejun Yan, Ping Zhou, Fei Long, Jing Liu, Fengguang Wu, Maolin Zhang, Jialei Liu

“…The composition/content of aroma compounds in tobacco leaves in the different producing areas varies too much, and it is very meaningful to develop advanced analysis techniques to investigate the composition/content-producing area correlation. Here, gas chromatography-ion mobility spectroscopy (GC-IMS) was used to analyze the composition/content of aroma compounds in tobacco samples from eight different producing areas. …”
Get full text

The Effect of Different Freezing Rates and Long-Term Storage Temperatures on the Stability of Sliced Peaches by Paul Dawson, Wesam Al-Jeddawi, James Rieck

“…Quality measurements included freeze thaw and weight loss, lightness, firmness, moisture content, ascorbic acid equivalent antioxidant capacity (AAEAC), hexanal detection using gas chromatography (GC), scanning electron microscopy (SEM), and sensory evaluation. …”
Get full text

Changes in Texture and Flavor of Dehydrated Shiitake Mushroom during Rehydration by LI Qianyu, CAO Xuehui, ZHUO Qiuchen, YOU Kaiyan, LIANG Zhitang, ZHU Danshi

“…An electronic tongue, headspace solid phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS) and laser scanning confocal microscopy (LSCM) were used to analyze the texture and flavor characteristics of shiitake mushroom during the rehydration process. …”
Get full text

Preparation of Multiwalled Carbon Nanotubes/Hydroxyl-Terminated Silicone Oil Fiber and Its Application to Analysis of Crude Oils by Shukui Zhu, Ting Tong, Wanfeng Zhang, Wei Dai, Sheng He, Zhenyang Chang, Xuanbo Gao

“…A simple and efficient method to analyze the volatile and semivolatile organic compounds in crude oils has been developed based on direct immersion solid-phase microextraction coupled to comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (DI-SPME-GC × GC/TOFMS). …”
Get full text

Formation Patterns of Major Flavor Substances Based on the Analysis of Spatiotemporal Heterogeneity in the Traditional Solid-State Fermentation System of Shanxi Aged Vinegar by SHEN Jin, ZHOU Jingli, LANG Fanfan, YAN Yufeng, WANG Li, XIA Yaoyao, LI Jie, ZHANG Feng, WANG Chenyuan, ZHENG Yu

“…Samples of fermented grains (Cupei) taken at different spatial locations and at different fermentation times were analyzed for physicochemical characteristics, flavor substances and microbial community composition by metagenomics and headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS). The results showed that the moisture and temperature of Cupei significantly varied among spatial locations. …”
Get full text

QuEChERS Method Followed by Solid Phase Extraction Method for Gas Chromatographic-Mass Spectrometric Determination of Polycyclic Aromatic Hydrocarbons in Fish by Mona Khorshid, Eglal R. Souaya, Ahmed H. Hamzawy, Moustapha N. Mohammed

“…A gas chromatography equipped with mass spectrometer (GCMS) method was developed and validated for determination of 16 polycyclic aromatic hydrocarbons (PAHs) in fish using modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for extraction and solid phase extraction for sample cleanup to remove most of the coextract combined with GCMS for determination of low concentration of selected group of PAHs in homogenized fish samples. …”
Get full text

Biosynthesis of silver nanoparticles from macroalgae Hormophysa triquetra and investigation of its antibacterial activity and mechanism against pathogenic bacteria by Shazia Bibi, Mohammed H. Abu-Dieyeh, Mohammad A. Al-Ghouti

“…The NPs are characterized using Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Gas chromatography/Mass spectrometry (GC/MS) and X-ray photoelectron spectroscopy (XPS). …”
Get full text

Inflammatory Markers Are Positively Associated with Serum trans-Fatty Acids in an Adult American Population by Mohsen Mazidi, Hong-kai Gao, Andre Pascal Kengne

“…TFAs were measured via capillary gas chromatography and mass spectrometry using negative chemical ionization. …”
Get full text

Nitrous oxide emissions from wetland soil amended with two types of cattle manure by Johnson Masaka, Justice Nyamangara, Menas Wuta

“…The static chamber and gas chromatography techniques were used to capture and measure fluxes of N2O. …”
Get full text

Production and characterization of biodiesel from Argemone mexicana seed oil by Melese Damtew Asfaw, Adamu Tizazu Yadeta, Betelihem Gessese Yewalie, Yosef Wondossen Negash

“…Furthermore, the fatty acid profile of the A. mexicana oil was determined through gas chromatography, revealing a composition of predominantly linoleic acid (C18:2), oleic acid (C18:1), and palmitic acid (C16:0). …”
Get full text

Streptomyces sp. strain MUSC 5 from mangrove forest in Malaysia: Identification, antioxidant potential and chemical profiling of its methanolic extract by Hefa Mangzira Kemung, Loh Teng-Hern Tan, Kok-Gan Chan, Hooi-Leng Ser, Jodi Woan-Fei Law, Bey Hing Goh

“…The antioxidant potential of methanolic extract from Streptomyces sp. strain MUSC 5 was assessed using a number of antioxidants assays which included free radical scavenging assays, metal chelation and ferric reduction antioxidant power (FRAP) assay. Furthermore, Gas chromatography Mass Spectrometry (GC-MS) was used to determine the presence of biologically active chemical compounds in methanolic extract of Streptomyces sp. strain MUSC 5. …”
Get full text

Degradation of High Concentrations of Anthracene Using White-Rot Wood-Inhabiting Fungi and Investigation of Enzyme Activities by Mohadeseh Khajehzadeh, Masoomeh Ghobad-Nejhad, Hamid Moghimi, Ali Abolhasani Soorki, Yu-Cheng Dai, Jing Si

“…The enzyme activity of laccase and manganese peroxidase that directly correlated with the biodegradation were determined, and the strains with the highest enzyme activities were evaluated for their ability to degrade 400 mg/L of anthracene over 28 days. Gas chromatography with flame ionization detector (GC-FID) revealed that four polypores viz., Trametes versicolor v21te, T. versicolor v22da, T. hirsuta, and Oxyporus sp. degraded 64%, 52%, 34%, and 20% of the anthracene, respectively. …”
Get full text

Detection, Risk Assessment, and Survey of Four Polycyclic Aromatic Hydrocarbon Markers in Infant Formula Powder by Chenggang Cai, Pinggu Wu, Pingping Zhou, Dajin Yang, Zhengyan Hu

“…A gas chromatography-mass spectroscopy (GC-MS) method was developed to assess the infant exposure assessment from four important polycyclic aromatic hydrocarbon (PAH) markers in infant formula powder: benzo[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene (collectively referred to as PAH4). …”
Get full text

Effect of H2O2 induced oxidative stress on volatile organic compounds in differentiated 3T3-L1 cells by Adebowale Samuel Oyerinde, Vaithinathan Selvaraju, Melissa Boersma, Jeganathan Ramesh Babu, Thangiah Geetha

“…The effect of OS on cell metabolism was analyzed by detecting VOCs in the headspace of the cells using solid phase micro extraction (SPME) and gas chromatography-mass spectrometry (GCMS). Our findings indicate that H2O2 concentrations exceeding 300 µM induce significant OS, leading to adipocyte apoptosis, as evidenced by various assays. …”
Get full text

Identification of Volatile Compounds and Insecticidal Activity of Essential Oils from Origanum compactum Benth. and Rosmarinus officinalis L. against Callosobruchus maculatus (Fab.... by Asmae Baghouz, Yamna Bouchelta, Imane Es-safi, Mohammed Bourhia, El Moussaoui Abdelfattah, Abdullah A. Alarfaj, Abdurahman Hajinur Hirad, Hiba-Allah Nafidi, Raja Guemmouh

“…(EOR) were extracted by use of hydrodistillation, and their volatile compounds were profiled by gas chromatography-mass spectrometry (GC-MS). The insecticidal activity of extracted EOC and EOR was evaluated against C. maculatus. …”
Get full text

Investigation of CO2 Extract of Portulaca oleracea for Antioxidant Activity from Raw Material Cultivated in Kazakhstan by Meruyert I. Tleubayeva, Raisa M. Abdullabekova, Ubaidilla М. Datkhayev, Margarita Yu. Ishmuratova, Mereke B. Alimzhanova, Kaldanay K. Kozhanova, Aida M. Seitaliyeva, Kairat S. Zhakipbekov, Zhanar B. Iskakova, Elmira A. Serikbayeva, Elena V. Flisyuk

“…For the first time, the antioxidant activity of Portulaca oleracea CO2 extract was determined by the amperometric method. Gas chromatography-mass spectrometry (GC-MS) chemical analysis of Portulaca oleracea CO2 extract dissolved in hexane revealed 37 components, including a complex mixture of aldehydes, alkanes, alkenes, esters, diterpenes, steroids, vitamin E, and carbohydrates. …”
Get full text

Stability Study of Algerian Nigella sativa Seeds Stored under Different Conditions by Muhammad Safwan Ahamad Bustamam, Kamarul Arifin Hadithon, Ahmed Mediani, Faridah Abas, Yaya Rukayadi, Nordin Lajis, Khozirah Shaari, Intan Safinar Ismail

“…Six replicates each were prepared and analyzed with Headspace-Gas Chromatography-Mass Spectrometry (HS-GC-MS) for three time points at the initial (1st day (0)), 14th (1), and 28th (2) day of storage. …”
Get full text

Uncovering the Hydrocracking Efficiency of Iron-Based Catalysts: A Novel Approach to Asphaltene Transformation in Iranian Heavy Oil by Muzaffer Yaşar, Savaş Gürdal, Kadir Yılmaz

“…Gas products were characterized using Gas Chromatography (GC). The investigation aimed to identify the catalyst precursor mixture that would maximize asphaltene conversion while minimizing coke production. …”
Get full text

Quality analysis of Idesia polycarpa fruit oil samples from cultivars with different phenotypes by Tianting Luo, Jiaqi Xu, Zhouqin Zhen, Xue Pan, Lang Feng, Likang Qin, Tingyuan Ren

“…A total of 532 aroma compounds were identified via gas chromatography–mass spectrometry (GC–MS), with terpenes as the major contributors. …”
Get full text

Resilience of <i>Chlorella vulgaris</i> to Simulated Atmospheric Gas Compositions of Mars, Jupiter, and Titan by Ariela Likai, Aikaterini Papazi, Kiriakos Kotzabasis

“…Photosynthetic performance was analyzed through chlorophyll a fluorescence induction (JIP-test), metabolic activity via gas chromatography, and biomass accumulation measurements. …”
Get full text