IR and NMR Spectra of Serenoa repens (Saw Palmetto) Oil Extracts and Reference Oils

Source: R/SrE.R

A collection of 14 IR and NMR spectra of essential oil extracted from the palm Serenoa repens or Saw Palmetto, which is commonly used to treat BPH in men. The 14 spectra are of different retail samples, and are divided into two categories based upon the label description: adSrE, adulterated extract, and pSrE, pure extract. The adulterated samples typically have olive oil added to them, which is inactive towards BPH. There are two additional spectra included as references/outliers: evening primrose oil, labeled EPO in the data set, and olive oil, labeled OO. These latter two oils are mixtures of triglycerides for the most part, while the SrE samples are largely fatty acids. As a result, the spectra of these two groups are subtly different.

Format

The data are stored as a Spectra object.

Source

IR data collected in the author's laboratory. NMR data collected at Purdue University with the generosity and assistance of Prof. Dan Raftery and Mr. Tao Ye.

See also

Additional documentation at https://bryanhanson.github.io/ChemoSpec/

Examples


data(SrE.IR)
sumSpectra(SrE.IR)
#> 
#>  Serenoa repens IR quality study 
#> 
#> 	There are 16 spectra in this set.
#> 	The y-axis unit is absorbance.
#> 
#> 	The frequency scale runs from
#> 	399.2123 to 3999.837 wavenumber
#> 	There are 1868 frequency values.
#> 	The frequency resolution is
#> 	1.9286 wavenumber/point.
#> 
#> 
#> 	The spectra are divided into 4 groups: 
#> 
#>   group no.   color symbol alt.sym
#> 1 adSrE  10 #984EA3     15       d
#> 2   EPO   1 #377EB8      2       b
#> 3    OO   1 #4DAF4A      3       c
#> 4  pSrE   4 #E41A1C      1       a
#> 
#> 
#> *** Note: this is an S3 object
#> of class 'Spectra'
data(SrE.NMR)
sumSpectra(SrE.NMR)
#> 
#>  Serenoa repens NMR quality study 
#> 
#> 	There are 16 spectra in this set.
#> 	The y-axis unit is peak height.
#> 
#> 	The frequency scale runs from
#> 	16.4831 to -4.1818 ppm
#> 	There are 32768 frequency values.
#> 	The frequency resolution is
#> 	6e-04 ppm/point.
#> 
#> 
#> 	The spectra are divided into 4 groups: 
#> 
#>   group no.   color symbol alt.sym
#> 1 adSrE  10 #984EA3     15       d
#> 2   EPO   1 #377EB8      2       b
#> 3    OO   1 #4DAF4A      3       c
#> 4  pSrE   4 #E41A1C      1       a
#> 
#> 
#> *** Note: this is an S3 object
#> of class 'Spectra'