Chromatographia

, Volume 60, Issue 7–8, pp 411–417 | Cite as

Determination of Carotenoids in the Chinese Medical Herb Jiao-Gu-Lan (Gynostemma Pentaphyllum MAKINO) by Liquid Chromatography

Article

Abstract

The amount and variety of carotenoids in Jiao-Gu-Lan (Gynostemma pentaphyllum MAKINO), a traditional Chinese medicinal herb which is currently sold in Taiwan and China as herbal tea, were determined by HPLC. Dried Jiao-Gu-Lan samples were ground into fine materials, and the carotenoids were extracted, saponified and subjected to HPLC analysis. A gradient mobile phase of methanol/isopropanol (99/1, v/v) (A) and methylene chloride (B) was used: 100% A and 0% B initially, maintained for 15 min, decreased to 70% A in 45 min, maintained for 15 min, and returned to 100% A in 65 min. A total of 25 carotenoids were resolved within 54 min by using a C-30 column with flow rate at 1.0 mL min−1 and detection at 450 nm. For all the six cultivars of Jiao-Gu-Lan samples, all-trans-lutein was present in largest amount (72–376 μg g−1), followed by cis isomers of lutein (0–72 μg g−1), neochrome (13–65 μg g−1), neoxanthin (0–41 μg g−1), all-trans- α-carotene (0–27 μg g−1), auroxanthin (7–23 μg g−1), violaxanthin (3–22 μg g−1), luteoxanthin (4–19 μg g−1), all-trans-β-carotene (0–7.6 μg g−1), β-cryptoxanthin (0–6.7 μg g−1), and cis isomers of β-carotene (0–1.9 μg g−1), on a dry weight basis.

Keywords

Column liquid chromatography Carotenoids Jiao-Gu-Lan plant Gynostemma Pentaphyllum 

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Notes

Acknowledgments.

This study was supported by a grant (NSC93-2313-B-030-003) from National Science Council, Taiwan.

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Copyright information

© Friedr. Vieweg&Sohn/GWV Fachverlage GmbH 2004

Authors and Affiliations

  1. 1.Department of Hotel and Restaurant ManagementChina College of Marine Technology and CommerceTaipeiTaiwan
  2. 2.Department of Nutrition and Food SciencesFu Jen UniversityTaipeiTaiwan

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