Gumbi Gumbi & the cancer cure claim

Gumbi Gumbi: Rare member of family Pittosporaceae

Gumbi Gumbi is a medium to large tree, native to certain areas of Australia only, and very sparsely found. Because of its scarcity, but similarity in appearance to other species, it is often confused with trees more widely found.

Many people believe there to be as many as six varieties with only one having medicinal properties and another being toxic. Our investigations and experimentation with propagation suggests this is not the case at all. We believe there is only one true Gumbi Gumbi.

Currently Gumbi Gumbi is extremely rare, as only one tree is found growing naturally in an average of 400 sq/km (250 sq/miles) and it is not being farmed to any large extent. One significant reason for its rarity is that Gumbi Gumbi saplings and young trees are commonly ravaged by wildlife and roaming farm stock, such as Kangaroos and cattle, prior to reaching maturity. Animals instinctively know what is good for them, as did the early indigenous people. We modern people, on the other hand, are only now beginning to understand.

Gumbi Gumbi trees are by nature very slow growing and difficult to propagate. In order to ensure the required properties are inherent within trees grown in other than their naturally occurring environment; certain conditions have to be met. Mature trees develop a taproot to 60 feet in natural conditions. Many people have attempted to grow Gumbi Gumbi from seeds and saplings and failed to attain mature trees.

Scientific Analysis

Tests undertaken using Leaf and Leaf Extract from Gumbi Gumbi Natural plantation (Central Queensland, Australia)

Gumbi Gumbi contains significant amounts of elements known to aid in benefiting health.

Further testing has also shown Gumbi Gumbi to be very high in Saponins. This assists with the delivery of the inherent benefits of Gumbi Gumbi Leaf when used as a tea as per our brewing instructions.
TEST REPORT — Chemical Analysis
Gumbi Leaf: 5 July 2006

Calcium (Ca) 1.56%
Potassium (K) 3.10%
Magnesium Mg) 0.36%
Sodium (Na) 0.19%
Phosphorus (P) 0.08%
Sulphur (S) 0.21%
Boron (B) 51.82 ppm
Cobalt (Co) 0.04 ppm
Chromium (Cr) 0.26 ppm
Copper (Cu) 3.55 ppm
Iron (Fe) 15.52 ppm
Iodine (I) 30.06 ppm
Lithium (Li) 0.08 ppm
Manganese (Mn) 0.08 ppm
Molybdenum (Mo) 0.62 ppm
Rubidium (Rb) 6.75 ppm
Zinc (Zn) 42.86 ppm
Silver (Ag) 0.07 ppm
Aluminium (Al) 18.77 ppm
Arsenic (As) 0.33 ppm
Gold (Au) 2.14 ppm
Barium (Ba) 7.20 ppm
Beryllium (Be) 0.04 ppm
Bismuth (Bi) 0.03 ppm
Cadmium (Cd) 0.15 ppm
Germanium (Ge) 0.18 ppm
Mercury (Hg) 0.27 ppm
Nickel (Ni) 0.78 ppm
Lead (Pb) 0.92 ppm
Platinum (Pt) 0.53 ppm
Antimony (Sb) 0.27 ppm
Selenium (Se) 12.15 ppm
Silicon (Si) 14.81 ppm
Tin (Sn) 0.25 ppm
Strontium (Sr) 149.96 ppm
Titanium (Ti) 0.81 ppm
Thallium (Tl) 0.03 ppm
Uranium (U) 0.01 ppm
Vanadium (V) 0.90 ppm
Tungsten (W) 0.03 ppm

TEST REPORT — Chemical Analysis
Gumbi Tea: 21 September 2006

Calcium (Ca) 43.99 ppm
Potassium (K) 346.02 ppm
Magnesium Mg) 29.55 ppm
Sodium (Na) 36.57 ppm
Phosphorus (P) 6.92 ppm
Sulphur (S) 13.37 ppm
Boron (B) 0.58 ppm
Cobalt (Co) N.D.
Chromium (Cr) 0.01 ppm
Copper (Cu) N.D.
Iron (Fe) N.D.
Iodine (I) 0.23 ppm
Lithium (Li) N.D.
Manganese (Mn) N.D.
Molybdenum (Mo) N.D.
Rubidium (Rb) 0.05 ppm
Zinc (Zn) 0.25 ppm
Silver (Ag) N.D.
Aluminium (Al) N.D.
Arsenic (As) 0.01 ppm
Gold (Au) 0.01 ppm
Barium (Ba) N.D.
Beryllium (Be) N.D.
Bismuth (Bi) N.D.
Cadmium (Cd) N.D.
Germanium (Ge) 0.00 ppm
Mercury (Hg) 0.00 ppm
Nickel (Ni) 0.00 ppm
Lead (Pb) N.D.
Platinum (Pt) 0.01 ppm
Antimony (Sb) 0.00 ppm
Selenium (Se) 0.00 ppm
Silicon (Si) 5.41 ppm
Tin (Sn) 0.02 ppm
Strontium (Sr) 0.33 ppm
Titanium (Ti) N.D.
Thallium (Tl) N.D.
Uranium (U) N.D.
Vanadium (V) N.D.
Tungsten (W) N.D.

Concentrations in ppm are equivalent to mg/Kg or mg/L
N.D. = Not Detected

Constituent Summary of extracts of Pittosporum Angustifolium (gumbi gumbi)


The major constituent of gumbi gumbi extract was found to be saponin (a sulphonated di- or tri- terpene). Saponins are natural detergents found in plants (that is, they contain water soluble and fat soluble components and dissolve in water to form a stable soapy froth).

Saponins have commercial uses in a number of applications such as in beverages such as root beer and slurpies (to provide the foamy “head”). Saponins have also found application as emulsifiers for photographic film preparations and cosmetics (such as shampoos and lipsticks) and as industrial frothers for ore separation. Saponins also have anti bacterial and anti-fungal properties1. Saponins decrease blood lipids, lower blood glucose response, and as an antidote to acute lead poisoning2.

Extracts containing saponins currently have a wide application. For example, they are used in animal livestock production facilities for ammonia and odour control as well as in gut bacteria control. Certain saponins form strong insoluble complexes with cholesterol which has application in cholesterol lowering in humans. Bile acids metabolised by bacteria in the colon form secondary bile acids, some of which are known promoters of colon cancer. The feeding of saponins to laboratory mice has shown a reduction in the formation of preneoplastic colon lesions1. This has a potential in the prevention and treatment of colon cancer in humans. Saponins also have application as use for adjuvants in vaccines (adjuvants increase immune-stimulation, by using saponins their emulsifying properties can also be utilised).

Saponins are highly toxic to cold blooded animals and some have been identified in snake venom, starfish, and sea cucumber. Some are toxic to humans.


The term tannins is widely applied to large polyphenolic compounds that contains sufficient hydroxyl and/or carboxyl groups to form complexes with proteins and other large molecules. Tannins are classified into two groups — notable hydrolysable tannins, and condensed tannins. The term tannin refers to the use of tannins in tanning animals hides.

Tannins are almost ubiquitous in the plant kingdom. They are astringent and bitter in taste. Their astringency causes the dry and puckery feeling in the mouth following consumption of red wine, strong tea or un-ripened fruit.

They are also predominantly responsible for the colour of the above and hydrolysable tannins have long-term antioxidant properties (the reaction of hydrolysable tannins in red wine is attributable to the “maturing” of the wine). Tannins are found in fruits, berries, smoked foods, beer and wines (more tannin is found in red wines than in white), citrus juices, condiments (such a cloves, tarragon, vanilla and cinnamon), legumes, and chocolate3. Tannins have shown potential antiviral, antibacterial, and anti parasitic properties. They have also been studied for their effects on the treatment of cancers and their inhibitory effect on HIV.


Alkaloids are naturally occurring chemical compounds containing basic nitrogen functionality.

There are three main types of alkaloids — true alkaloids, proto alkaloids, and pseudo alkaloids. Both true alkaloids and proto alkaloids are derived from amino acids, while pseudo alkaloids are not derived from amino acids.

Alkaloids are alkaline and they are reactive compounds that have pharmacological effects at low doses and are used as medications and recreational drugs. Cocaine, caffeine, nicotine, and Quinine are all examples of alkaloids. Alkaloids form water soluble salts and may exist in the free-state, as salts, or as N-oxides — depending on pH or physiological conditions. These properties make them have enormous application as medications.


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