Two different extraction processes, Soxhlet and ultrasound, were used to obtain the oil extracts of Western Schley, Wichita, and Native pecan nuts cultured in Chihuahua, Mexico. The aspects evaluated in this study were the extraction yield of the processes and fatty acids' profile of the resulting extracts. Gas chromatography coupled with mass spectrometry (GC-MS) was used to identify and deter...

In the course of the nutrition investigations in this laboratoq m-e have occasion to make a great many estimations of fat in samples of portions of animals and in feeding stuffs. The usual Soxhlet extraction of the thoroughly dried sample with ether is the method that has been employed. It is understood that this method gives a determination of the crude fat or total ethersoluble material. By t...

An improved, rapid method for polychlorobiphenyl (PCB) extraction from lipid rich matrices and determination by GC-MS is presented. PCBs accumulate in the environment, can be extremely persistent, and health complications including neurotoxic effects have been reported. Thus, monitoring these persistent organic pollutants seems prudent. The analytical procedure for PCB assessment from environme...

Abstract To increase the effectiveness of coffee oil processing process in drying beans, this study, pretreatment using a microwave was evaluated. The method carried out with three power inputs. After process, it followed by roasting and grinding beans. Then beans were extracted so that obtained. From 3 variations input power, namely MH, MM, ML, from initial moisture content 56.75%, 7.29% row; ...

A case study of Polish Melilotus officinalis honey was presented for the first time. Gas chromatography-mass spectrometry (GC-MS) (after steam distillation, Soxhlet extraction, ultrasonic solvent extraction, and solid phase extraction (SPE)) and targeted high performance liquid chromatography with a photodiode array detector (HPLC-PAD) were applied to determine the characteristic components of ...

In the present work the efficiency of water under subcritical conditions for the extraction of pesticides having a broad spectrum of polarities from soils was evaluated. The pesticides under study were carbofuran, hexachlorobenzene, dimethoate, simazine, atrazine, lindane, diazinon, methylparathion, alachlor, aldrin-R, metholachlor, chlorpyrifos, heptachlor epoxide, dieldrin, endrin, 4,4-DDT an...