نتایج جستجو برای: gas chromatographymass spectrometry gcms

تعداد نتایج: 326793  

Journal: :Jurnal Hortikultura Indonesia: Indonesian Journal of Horticulture 2021

Abiu (Pouteria caimito) merupakan tanaman tropis eksotis yang mempunyai banyak manfaat untuk kesehatan. menarik karena kandungan senyawa bioaktifnya beragam sehingga perlu dilakukan penelitian terhadap berbagai bioaktif terkandung pada masing-masing bagian abiu. Tujuan dari ini adalah mengidentifikasi dan mengevaluasi ekstrak beberapa abiu serta manfaatnya. Penelitian menggunakan lima (5) yaitu...

2014
Xiao Ying Chen Xiao Ning Zhao Hui Fang Zeng Jian Hui Xie Xiao Lu Chen Yong Zhuo Liang Qi Duan Wu Zi Ren Su Hong Feng Wang Xiao Ping Lai

Purpose: To establish an efficient method to recycle natural borneol from Cinnamomum camphor chvar. Borneol oil residue. Methods: The fractions and raffinate of the oil residue of Cinnamomum camphor chvar. Borneol were obtained by fractional distillation, and analyzed by gas chromatography with flame ionization detector (GC-FID) and gas chromatographymass spectrometry (GC-MS). Natural borneol w...

2006
George M. Singer William Lijinsky Leonard Buettner Gary A. McClusky

Nitrosomethylalkylamines with chain lengths from C4 (n-butyl-) to OK (n-tetradecyl-) were each administered to three rats at doses equimolar with 12 mg of the butyl compound. All of the compounds administered to rats at this dose, twice a week for 30 weeks, induced tumors in 100% of the animals. Some of the compounds with even-numbered alkyl chains induced bladder tumors, and a connection was s...

2002
PETER HALLGREN ARNE LUNDBLAD

Nine oligosaccharides have been isolated from urine collected from an O(H), Le(a+ b-1, nonsecretor, woman during her pregnancy and subsequent lactation. One of them is a new hexasaccharide denoted lacto-N-neo-difucohexaose II: P-D-Gal-(1~4)-[ru-L-Fuc-(1~3)1-P-D-GlcNAc-(1~3)-P-DGal-(1~4)-[a-L-Fuc-(1~3)1-D-Glc. Seven of the remainder were identified as the milk oligosaccharides lacto-N-difucohexa...

Journal: :Journal of Drug Delivery and Therapeutics 2022

Plant Based Natural Products (PBNPs) have been subject of interest since ancient time due to their use in food, industrial and biomedical applications. Research attention has further augmented explore phytochemical composition, properties, potential application the post-COVID era. In present study screening carried out with Methanolic Leaf Extracts Moringa oleifera (MLEMO) followed by Gas Chrom...

Journal: :IOP conference series 2021

The use of Moringa oleifera seed in water purification has reduced the chemical-based coagulants which is detrimental to both human and livestock. This project aimed at testing microbial properties M. oil extract on some selected pathogens (Bacterial fungi). was extracted using Soxhlet apparatus with ethanol as solvents. Gas-chromatography-mass spectrometry (GCMS) analyses were carried out for ...

2017
Daxesh P Patel Kristopher W Krausz Cen Xie Diren Beyoğlu Frank J Gonzalez Jeffrey R Idle

A novel, selective and sensitive single-ion monitoring (SIM) gas chromatography-mass spectrometry (GCMS) method was developed and validated for the determination of energy metabolites related to glycolysis, the tricarboxylic acid (TCA) cycle, glutaminolysis, and fatty acid β-oxidation. This assay used N-tert-butyldimethylsilyl-N-methyltrifluoroacetamide (MTBSTFA) containing 1% tert-butyldimethy...

2013
James A. Covington Eric W. Westenbrink Nathalie Ouaret Ruth Harbord Catherine Bailey Nicola O'Connell James Cullis Nigel Williams Chuka U. Nwokolo Karna D. Bardhan Ramesh P. Arasaradnam

Bile acid diarrhoea (BAD) is a common disease that requires expensive imaging to diagnose. We have tested the efficacy of a new method to identify BAD, based on the detection of differences in volatile organic compounds (VOC) in urine headspace of BAD vs. ulcerative colitis and healthy controls. A total of 110 patients were recruited; 23 with BAD, 42 with ulcerative colitis (UC) and 45 controls...

Journal: : 2022

The objective of the study was to investigate chemical composition and biological activity Cinnamomum burmannii essential oil in Cao Bang province. Use steam distillation method extract oils. oils determined by Gas chromatography-mass spectrometry (GCMS). Evaluation antioxidant capacity using DPPH free radical method. results this have that has 23 components with main including Citronellal (52....

Journal: :Cosmetics 2023

Fragrances are among the most common ingredients in cosmetics products. Importantly, exposure to fragrances on a daily basis might pose health risk, leading serious effects, such as contact dermatitis or eczema. Annex III of European Union Directive Cosmetic Products and Gulf Cooperation Council standardization organization (GSO) introduced restrictions for 26 allergens, with their concentratio...

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