Grapefruit Seed Extract: Poison on Your Plate?

Grape Seed oil is a good oil which may increase good cholesterol levels and reduce bad cholesterol levels, and pure Grape Seed Extract contains beneficial substances (OPCs or Oligomeric ProanthoCyanidins) which slow or stop colon cancer.

Unfortunately the quite unrelated commercial product Grapefruit Seed Extract, purportedly from grapefruit as opposed to grapes, is often adulterated or even almost entirely made up from poisonous chemicals, since pure GSE has little or no antibacterial properties. Chief among the impurities is benzalkonium chloride. In a 2008 study synthetic disinfectants such as benzethonium or benzalkonium chloride were identified in most of the commercial GSE products:

Shokuhin Eiseigaku Zasshi. 2008 Feb;49(1):56-62.
[Survey of synthetic disinfectants in grapefruit seed extract and its compounded products].
[Article in Japanese] Sugimoto N, Tada A, Kuroyanagi M, Yoneda Y, Yun YS, Kunugi A, Sato K, Yamazaki T, Tanamoto K.
National Institute of Health Sciences, Tokyo, Japan.
Grapefruit seed extract (GSE), derived from the seeds of grapefruit (Citrus paradisi MCAF.), is listed as a natural food additive in Japan. Products containing GSE are used as disinfectants made from only natural sources, especially after Japanese researchers found that GSE prevents the growth of norovirus. On the other hand, recent overseas studies indicated that synthetic disinfectants, such as benzalkonium and benzethonium chlorides, were present in some commercial GSE products. To confirm the quality of commercial GSE products available in Japanese markets, we carried out comprehensive research to identify the major constituents of commercial GSE products which are used as food additives (13 products from 6 manufacturers), dietary supplements (5 products from 4 manufacturers), cosmetic materials (16 products from 10 manufacturers) and disinfectant or deodorant sprays (7 products from 7 manufacturers). By means of NMR and LC/MS analysis, synthetic disinfectants such as benzethonium or benzalkonium salts were detected in most of the commercial GSE products.
PMID: 18344660 [PubMed – indexed for MEDLINE] Free full text

In other words, make sure that one website calls Pure Liquid Gold is pure, especially before you take a spoonful internally. In fact, that brand has floor cleaner in it.

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4 Responses to Grapefruit Seed Extract: Poison on Your Plate?

  1. Margarito Kellaway says:

    The 1929 Ruby Red patent was associated with real commercial success, which came after the discovery of a red grapefruit growing on a pink variety. Only with the introduction of the Ruby Red did the grapefruit transform into a real agricultural success.`

    Good day to you

  2. Duncan Molin says:

    Egyptians ate grapes at least 6,000 years ago, and several ancient Greek philosophers praised the healing power of grapes — usually in the form of wine. European folk healers made an ointment from the sap of grapevines to treat skin and eye diseases. Grape leaves were used to stop bleeding, inflammation, and pain, such as the kind brought on by hemorrhoids. Unripe grapes were used to treat sore throats, and dried grapes (raisins) were used for constipation and thirst. Round, ripe, sweet grapes were used to treat a range of health problems including cancer, cholera, smallpox, nausea, eye infections, and skin, kidney, and liver diseases.’.*;

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  3. Jeremy Moehle says:

    There are 13 clinical trials (January, 2012) assessing potential effects of grape seed extracts on human diseases, such as breast cancer, blood estrogen levels in postmenopausal women, and coronary artery disease.-‘;.

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  4. Jerlene Witvoet says:

    Vitamin E, flavonoids, linoleic acid, and OPCs are highly concentrated in grape seeds. These compounds can also be found in lower concentrations in the skin of the grape. OPCs are also found in grape juice and wine, but in lower concentrations. Resveratrol is another of grape’s compounds which is related to OPCs and found mainly in the skins. Resveratrol has become very popular as an antioxidant and is being studied in connection with a variety of diseases.;-‘-

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