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TeaWiki > Hibiscus

Hibiscus


Category: Herbs
Version: 1.2
Last modified: 06/30/2007 19:21 PST


Hibiscus (Hibiscus sabdariffa) is a flowering shrub in the plant family of Malvaceae.

Other names: Jamaica sorrel, red sorrel, roselle, rozelle, sorrel

Table of contents
1. Classification
2. Description
3. Traditional usage
4. Side effects
5. Tea blends
6. Chemical makeup
7. Learn more
8. References

Classification


  • Kingdom: Plantae
  • Division: Magnoliophyta
  • Class: Magnoliopsida
  • Order: Malvales
  • Family: Malvaceae
  • Genus: Hibscus
  • Species: Hibiscus sabdariffa (and ~200 other species)


    Description


    Hibiscus (Hibiscus sabdariffa), also known as roselle, is a flowering shrub in the plant family of Malvaceae and is the commonly used species of hibiscus for tea. The calyces (or calyxes) are used which are the outer portion of the flower bud. The calyces are often referred to as hibiscus flowers in recipes and tea blends.

    Traditional usage


    This list reflects the "traditional usage" of hibiscus, which should be considered folklore unless supported by a scientific study. Studies, where available, are quoted and referenced. See the Disclaimer below.

  • Cholesterol / Heart Disease - a study at the Chung Shan University in Taiwan involving rats on high cholesterol diets demonstrated that an extract of the hibiscus flower significantly lowered cholesterol content in blood serum and prevented oxidation of LDL, "bad", cholesterol.

    "Experiments have shown that compounds extracted from red wine and tea reduce cholesterol and lipid build-up in the arteries of rats.

    "This is the first study to show that Hibiscus extract has the same effect."

    - Dr. Chau-Jong Wang, lead researcher

  • Hypertension - in one study individuals with hypertension were given hibiscus tea once daily for 12 days. Members of the control group lowered their blood pressure by 11% versus 4% for the control group.

  • Liver Disorder - hibiscus is thought to help with liver disorders, though no studies to this effect have been done.

    Ref: [2][3]

    Side effects


    No studies on the side effects of hibiscus usage have been reviewed.

    Tea blends


    Hibscus flowers can be used alone as a tea or blended with other herbals. Common blends include:

  • Hibiscus/Rose Hips - these herbs are often combined.

    Note: the above combinations of herbs and their effects should be considered "folklore" and are not based on clinical studies. See the Disclaimer below.

    Chemical makeup


    This list of chemicals represents the calyx and flower material only, where possible, and is not comprehensive.

  • Acetic-acid
  • Aluminum
  • Anisaldehyde
  • Anthocyanins
  • Ascorbic-acid
  • Benzaldehyde
  • Benzyl-alcohol
  • Beta-Carotene
  • Butyric-acid
  • Calcium
  • Calcium-oxalate
  • Caprylic-acid
  • Carbohydrates
  • Chromium
  • Citric-acid
  • Cobalt
  • Cyanidin-3-sambubioside
  • Delphinin
  • Delphinidin
  • Delphinidin-3-glucoside
  • Delphinidin-3-sambubioside
  • Ethanol
  • Formic-acid
  • Glycolic-acid
  • Gossipetin
  • Gossypetin-3-glucoside
  • Hibiscetin
  • Hibiscic-acid
  • Hibiscin
  • Hibiscretin
  • Iron
  • Isoamyl-alcohol
  • Isopropyl-alcohol
  • Magnesium
  • Malic-acid
  • Manganese
  • Methanol
  • 3-Methyl-1-butanol
  • Mucilage
  • Niacin
  • Oxalic-acid
  • Pectin
  • Pelargonic-acid
  • Potassium
  • Propionic-acid
  • Protocatechuic-acid
  • Resin
  • Riboflavin
  • Sabdaretin
  • Sabdaritrin
  • Selenium
  • Sucrose
  • Alpha-terpinyl-acetate
  • Thiamin
  • Utalonic-acid
  • Zinc
  • Ref: [1]

    Learn more


  • PubMed - Clinical studies of Hibiscus sabdariffa

    References


    1. Duke, James A. Handbook of phytochemical constituents of GRAS herbs and other economic plants. 2000 Boca Raton, FL. CRC Press.

    2. Chang-Che Chen, Fen-Pi Chou, Yung-Chyan Ho, Wea-Lung Lin, Chin-Pin Wang, Erl-Shyh Kao, An-Chung Huang and Chau-Jong Wang "Inhibitory effects of Hibiscus sabdariffa L extract on low-density lipoprotein oxidation and anti-heperlipidemia in fructose-fed and cholesterol-fed rats" Journal of the Science of Food and Agriculture Volume 84

    3. Haji Faraji M, Haji Tarkhani A. "The effect of sour tea (Hibiscus sabdariffa) on essential hypertension." Journal Ethnopharmacol 1999;65:231-6.




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    The information presented here should be considered fiction unless verified by stated references.
    Medical statements presented have not been reviewed by the FDA.
    No claim is made as to the health benefits or appropriateness of any product for any medical condition.
    Please consult a physician for all medical advice.


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