Biomedical subjects

Jacqueline M R Bélanger

Publications and source records attributed to Jacqueline M R Bélanger.

3 recordsLinked to original sources

PubMed2006

Applications of microwave-assisted processes (MAP) to environmental analysis.

The use of microwave-assisted extraction has gained wide acceptance as a powerful tool for the recovery of environmental contaminants and their subsequent analysis. This paper reviews the historical and fundamental basis of the technology. It also provides a cursory review of the current state-of-the-art and literature (2000-2006) in the area of environmental analysis in addition to providing a critical review of the level of efforts being devoted to its further development.

Animals↗

PubMed2003

Optimization of microwave-assisted extraction (MAP) for ginseng components by response surface methodology.

Response surface methodology (RSM) was applied to predict optimum conditions for microwave-assisted extraction-a MAP technology-of saponin components from ginseng roots. A central composite design was used to monitor the effect of ethanol concentration (30-90%, X(1)) and extraction time (30-270 s, X(2)) on dependent variables, such as total extract yield (Y(1)), crude saponin content (Y(2)), and saponin ratio (Y(3)), under atmospheric pressure conditions when focused microwaves were applied at an emission frequency of 2450 MHz. In MAP under pre-established conditions, correlation coefficients (R (2)) of the models for total extract yield and crude saponin were 0.9841 (p < 0.001) and 0.9704 (p < 0.01). Optimum extraction conditions were predicted for each variable as 52.6% ethanol and 224.7 s in extract yield and as 77.3% ethanol and 295.1 s in crude saponins, respectively. Estimated maximum values at predicted optimum conditions were in good agreement with experimental values.

Ethanol↗

PubMed2002

MAP: microwave-assisted extraction of cockroaches.

A Microwave-Assisted Process (MAP is a Trade-Mark of Her Majesty the Queen in Right of Canada as represented by the Minister of the Environment) solvent extraction procedure was used in conjunction with GC-MS analysis to investigate the chemical composition of dried and live cockroaches. The main components extracted were classified into four groups: sterols. fatty acids and their esters, long chain alkanes and fused aromatic hydrocarbons.

Alkanes↗