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Name of presenter:      Bettina Horn Date: 02/06/2016 Location: Berlin, Germany Detection of spice adulteration using spectroscopic fingerprinting techniques

Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

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Page 1: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Name of presenter:      Bettina Horn

Date:  02/06/2016

Location:  Berlin, Germany

Detection of spice adulteration using spectroscopic fingerprinting techniques

Page 2: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

• combination of spectroscopy/spectrometry and multivariate data analysis

• comprehensive characterization of food matrices• differentiation of samples due to

Non‐targeted analysis – fingerprinting approach

botanical origingeographical origin

…adulteration

→→

1

Page 3: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

milling

• FTIR spectroscopy

Data analysis

Sample preparation

Spectroscopy

Non‐targeted analysis – fingerprinting approach

extraction

NMR tube

600 µl

sample

• 1H NMR spectroscopy

2

Page 4: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Analysis of spices and herbs • 1H NMR spectra(acetone‐d6 extracts)

• FTIR spectra

3

Page 5: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Analysis of spices and herbs

• PCA of 1H NMR data• PCA of FTIR data

4

Page 6: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Analysis of spices and herbs

• PCA of 1H NMR data• PCA of FTIR data

5

Page 7: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

• investigations focus on 3 types of adulteration:

Authentication of spices and herbs

(i) product foreign material

(iii) chemical additive

(ii) product own material

6

Page 8: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

• investigations focus on 3 types of adulteration:

Authentication of spices and herbs

(i) product foreign material

(iii) chemical additive:Sudan (I/IV) dye

(ii) product own material

6

Page 9: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Paprika identification – natural variation

QC sample(prepared in 

replicates, n=49)

projectsamples

(n=50, p=1)

commercialsamples

(n=62, p=29)

• PCA of 1H NMR data• PCA of FTIR data

7

Page 10: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Paprika authentication – detection of adulteration

projectsamples

(n=50, p=1)

• PCA of 1H NMR data• PCA of FTIR data

8

Page 11: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Paprika authentication – detection of adulteration

• PCA of FTIR data, prediction of test set

LOD ~ 1 %

projectsamples

(n=50, p=1)

9

Page 12: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Paprika authentication – detection of adulteration

• PCA of 1H NMR data, prediction of test set

projectsamples

(n=50, p=1)LOD ~ 100 ‐ 500 ppm

10

Page 13: Detection of spice adulteration using spectroscopic ... · • investigations focus on 3 types of adulteration: Authentication of spices and herbs (i) product foreign material (iii)

Thanks for your attention.

E‐mail of presenter:      [email protected]

Website:  http://www.spiced.eu