SPDS Aloe Vera Method Book

OFFICIAL DOCUMENT

Date Issued: Supersedes:

Page:

13 of 15

Procedure Title: Identification and quantitation of Aloe Vera Using 1 H NMR

N/A

Effective Date:

TBD

SOP #:

Revision #:

00

Prepared By: Department: Applies To:

Isaac Lee Quality Herbalife QC Laboratories

A sample diluted with lambda carrageenan can be detected by looking at this region.

Maltodextrin

Test data for Maltodextrin sample indicated no Glucose, Malic acid, and Aloverose peaks (Figure 11) thus confirming the material is not aloe vera. In addition, the spectrum of Maltodextrin contains distinguishable peak at 5.4ppm region. The aloe vera sample contains doublet at 5.4ppm region, which belongs to sucrose. Maltodextrin peak is not a doublet and it is broader than the sucrose peak. So, any aloe vera sample diluted with maltodextrin is detectable (see figure 13).

Figure 11. 1 H NMR spectrum of Maltodextrin

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