The chemical composition of subcutaneous fats was analyzed in a corpse that had died from drowning. The skin of the cadaver examined postmortem showed different stages of adipocere. Samples from these regions were chemically compared with the fatty tissue of a person who had died recently. HPLC, GC, GC-MS, NMR (1H- and 13C-NMR), TLC and titrimetrical methods were used to evaluate the degree of decomposition. The fatty acid pattern of the triglycerides (TG) and the free fatty acids (FFA) obtained by TLC separation was also investigated. Some discrepancy was observed between the autopsy findings and the results of the chemical analysis. It is suggested that the autopsy should be supplemented by chemical analysis in order to describe the state of adipocere correctly.
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http://dx.doi.org/10.1007/BF00205095 | DOI Listing |
Org Biomol Chem
January 2025
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
Ni(II)-hydrazineylpyridine (Ni(II)-PyH)-catalyzed regioselective synthesis of α-benzyl substituted β-hydroxy ketones from α,β-unsaturated ketones and alcohols is reported a Fenton free-radical reaction. This protocol enables facile access to desired products in good to excellent yields in 12 h using toluene solvent at room temperature to 100 °C. The structural analysis of the products was confirmed by H, C-NMR, GC-MS, and HRMS data.
View Article and Find Full Text PDFFood Res Int
January 2025
Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil. Electronic address:
This study evaluated the impact of fermentation with Lactobacillus acidophilus pre-subjected to acid, osmotic, and oxidative stress conditions on the production of metabolites and the bioaccessibility of nutrients and bioactive compounds in fermented milks and yogurts. The products were added with orange bagasse (additional calcium - Ca source) and buriti pulp (carotenoids source). Gas chromatography coupled with mass spectrometry (GC-MS) and nuclear magnetic resonance (NMR) were used to analyze the volatile and non-volatile compounds metabolites from fermentation, respectively.
View Article and Find Full Text PDFTalanta
January 2025
Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, PR China; School of Chemical Engineering and Technology, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519082, Zhuhai, PR China; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Provincial Engineering Research Center for Ambient Mass Spectrometry, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center Guangzhou), 100 Xianlie Middle Road, Guangzhou, 510070, PR China; Chemistry College, Center of Advanced Analysis and Gene Sequencing, Zhengzhou University, Kexue Avenue 100, Zhengzhou, 450001, PR China.
Macrocyclic polymer materials exhibit excellent selectivity and adsorption performance in pollutant adsorption due to unique host-guest recognition. Herein, three kinds of calixarene polymers (C4P, C6P and C8P) were synthesized through Sonogashira reaction, and were characterized through H NMR, FT-IR, SEM, and TEM. The water contact angle experiments revealed that three kinds of calixarene polymers were highly hydrophobic, and they all exhibited high enrichment efficiency for weak polar chloro-substituted benzene compounds (chlorobenzene, o-chlorotoluene, p-dichlorobenzene and o-dichlorobenzene) and BTEX (benzene, toluene, ethylbenzene and xylenes).
View Article and Find Full Text PDFFront Nutr
December 2024
Department of Traditional Chinese Medicine, Henan Agricultural University, Zhengzhou, China.
In this study, an acid-assisted extraction strategy was used to extract a novel polysaccharide (ACP) from after which this polysaccharide was purified and subjected to extensive characterization. ACP was determined to have an average molecular weight of 15,580 Da in structural characterization studies, and it was found to primarily consist of glucose, galactose, L-fucose, and fructose at an 82.14:12.
View Article and Find Full Text PDFMult Scler
January 2025
Departamento de Neurología, Pontificia Universidad Católica de Chile, Santiago, Chile.
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