A novel on-line ultrasonic extraction system for determination of the optimal ultrasonic frequency for plant material

2015 ◽  
Vol 7 (1) ◽  
pp. 336-341 ◽  
Author(s):  
Jianqing Liao ◽  
Baida Qu ◽  
Baoguo Xu
Keyword(s):  
Extraction Method ◽  
Plant Material ◽  
Extraction Yield ◽  
Ultrasonic Extraction ◽  
Extraction System ◽  
Ultrasonic Frequency ◽  
The Novel ◽  
On Line ◽  
Optimum Extraction

The novel extraction system was developed to efficiently extract plant material by determining optimum extraction frequency via two steps. Extraction experiments show that this extraction system gave a higher extraction yield compared to existing ultrasonic extraction method.

Research on the Extraction of Dendranthema Morifolium Volatile Oils by Microwave-Assisted Steam Distillation Extraction

2013 ◽  
Vol 634-638 ◽  
pp. 1049-1053
Author(s):  
Hui Lin Cao ◽  
Shuang Ran Liang ◽  
Yang Tian ◽  
Zhi Ling Chen ◽  
Jian Ping Chao
Keyword(s):  
Extraction Method ◽  
Steam Distillation ◽  
Extraction Efficiency ◽  
Extraction Yield ◽  
Volatile Oils ◽  
Microwave Assisted ◽  
Steam Extraction ◽  
Steam Distillation Extraction ◽  
Optimum Extraction ◽  
Modern Technologies

Microwave-assisted steam extraction system combines the advantages of both conventional and modern technologies. MAE is probably going to be the leading technology in essential oil producing industry. In our research, one-factor and uniform experimental designs are used to determine the optimum extraction conditions, and the results are as follows: the extraction yield is measured as 2.30% with 3h of reflux time, when degree of pulverization is 90, immersing time is 3h, yield of solid to liquid equals 12: 1 ml/g. The chemicals in the production were examined by GC-MS. More than 40 kinds of chemicals were detected, which is consistent with that of the traditional steam extraction method. However, the extraction efficiency is dramatically increased when the steam extraction is assisted with microwave heating, and it is up to 3.8 times.

scholarly journals Nicotiana glauca poisoning in ostriches (Struthio camelus)

2011 ◽  
Vol 82 (2) ◽  
Author(s):  
C. J. Botha ◽  
P. A. Steenkamp ◽  
A. Olivier ◽  
L. C. Bekker
Keyword(s):  
Extraction Method ◽  
Plant Material ◽  
Solid Phase ◽  
Dry Weight ◽  
Phase Extraction ◽  
Liquid Chromatography Mass Spectrometry ◽  
Nicotiana Glauca ◽  
Struthio Camelus ◽  
Chemical Determination

Putative Nicotiana glauca (wild tobacco) poisoning was diagnosed in a flock of ostriches near Oudtshoorn, South Africa. Post mortem examinations (n = 7) were performed on ostriches (Struthio camelus) that had died. Suspicious leaf remnants (weighing 80–770 g), packed in a layer on top of other plant material, were carefully separated from the proventricular content and submitted for chemical determination of anabasine, the major toxic principle contained by this plant. A standard solid phase extraction method was used followed by an optimised liquid chromatography-mass spectrometry procedure. Anabasine was detected in the leaf remnants (114–177 μg/g dry weight) removed from the proventriculus of the ostriches that succumbed as well as in control N. glauca leaves (193 μg/g dry weight). The analytical methods used in this study revealed the presence of anabasine in the suspicious leaf remnants, indicating that the birds had been exposed to N. glauca and had died of this poisoning.

An on-line solid phase extraction system using polyurethane foam for the spectrophotometric determination of nickel in silicates and alloys

1999 ◽  
Vol 378 (1-3) ◽  
pp. 287-292 ◽  
Author(s):  
Sérgio Luis Costa Ferreira ◽  
Djane Santiago de Jesus ◽  
Ricardo Jorgensen Cassella ◽  
Antonio Celso Spinola Costa ◽  
Marcelo Souza de Carvalho ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Polyurethane Foam ◽  
Spectrophotometric Determination ◽  
Solid Phase ◽  
Extraction System ◽  
Phase Extraction ◽  
Determination Of Nickel ◽  
On Line
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