SPDS Aloe Vera Method Book

OFFICIAL DOCUMENT

Date Issued: Supersedes:

Page:

11 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

Lambda-Carrageenan, Kappa-Carrageenan, and Iota-Carrageenan For Carrageenan, the 1 H NMR spectra of Lambda-Carrageenan, Kappa-Carrageenan, and Iota- Carrageenan were collected to demonstrate the specificity (Figure 8 to Figure 10). These three (3) types of carrageenans are most widely used in food industry. As seen from the NMR spectra result, no Glucose, Malic acid, or Aloverose diagnostic peaks were observed in both Kappa- Carrageenan and Iota-Carrageenan products. The spectrum of Lambda-Carrageenan contains Glucose peak, but the other two chemical marker are missing

Figure 8. 1 H NMR spectrum of Lambda-Carrageenan

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