Vitamin E exists in eight different forms ("isomers"): alpha, beta, gamma and delta tocopherol; and alpha, beta, gamma and delta tocotrienol. Each form has its own biological activity, Alpha-tocopherol is the most active form in humans. The natural form is labeled "D", while the synthetic form is labeled "DL". The synthetic form is only half as active as the natural form. Vitamin E in supplements is usually sold as alpha-tocopheryl acetate, a form of alpha-tocopherol that protects its ability to function as an antioxidant. Kangcare TocobestTM, powerful antioxidant that works to keep healthy, is a group of standard natural Vitamin E products, including:
TocobestTM Mixed Tocopherols
TocobestTM Mixed Tocopherol occurs as a brownish red to light yellow, clear, viscous oil having a mild, characteristic odor and taste. Its biological activity is higher than synthetic VE. Unlike its synthetic counterpart, natural Vitamin E does not contain any chemical contamination which result from the chemical synthesis process.
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Item |
Specification |
|
Appearance |
Yellow to Brownish red |
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Total tocopherol |
≥50, 70, 90% |
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d-(β+γ+δ)-tocopherols in total tocopherols |
≥80% |
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Acidity |
≤1.0 ml |
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Heavy Metals |
≤10 ppm |
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Specific Rotation |
≥+20º |
TocobestTM D-α-tocopherol
TocobestTM D-alpha-tocopherol is a clear, red or red brownish viscous oil having mild characteristic aroma and taste. Protecting from light, from heat, from contact with transition metals and from alkalis are recommended. TocobestTM is concentrated form of d-α-tocopherol derived from edible soybean oil.
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Item |
Specification |
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Appearance |
Yellow to Brownish red |
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Total tocopherol |
1000 IU,1100 IU
1200 IU,1300 IU |
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D-tocopherol |
≥67.1% |
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Acidity |
≤1.0 ml |
|
Heavy Metals |
≤10 ppm |
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Specific Rotator |
≥+24º |
TocobestTM D-α-tocopheryl Acetate
The acetate form of D-α-tocopherol is called an ester, which is more stable to light and oxygen than free tocopherol. The shelf-life of the tocopheryl acetate is greater than that of the unesterified tocopherol. Tocopheryl acetate is naturally converted by the body to vitamin E. TocobestTM D-α-tocopheryl Acetate is pale yellow to yellow, transparence, and glutinous liquid, or 700 I.U. CWS powder. 1 mg d-a-tocopherol acetate = 1.36 I.U.
TocobestTM D-α-tocopheryl Acetate 96% Oil:
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Item |
Specification |
|
Appearance |
Pale yellow to yellow, transparence oil |
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D-α-tocopheryl Acetate |
96-102% |
|
Absorbancy index
(at 284nm wave length) |
41.0-45.0 |
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Index of refraction |
1.494-1.499 |
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Acidity |
≤2.8 ml mg KOH/g |
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Heavy Metals |
≤10ppm |
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Specific Rotator |
≥+24º |
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Organic Volatile Impurities |
Pass, USP<467>Method IV |
|
Benz (a) Pyrene |
Max.1ppb |
TocobestTM D-α-tocopheryl Succinate
TocobestTM D-alpha tocopheryl succinate is the esterification product of d-a-tocopherol and succinic acid, which is a white to off-white crystalline powder with little or no odor or taste, It is derived from non genetically modified soybeans, and is thus not subject to labeling under EU Regulations (EC) 1829/2003 and 1830/2003. TocobestTM D-alpha tocopheryl succinate is intended for use as vitamin E in the dietary supplement, food and Pharmaceuticals industry. 1 mg d-a-tocopherol succenate = 1.21 IU
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Item |
Specification |
|
Appearance |
White to off-white crystalline powder |
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D-α-tocopheryl Succinate |
98-102% |
|
Melting point |
73-78º |
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Colour (Gardner) |
4 Max |
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Heavy Metals |
≤10ppm |
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Specific Rotator |
≥+24º |
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Organic Volatile Impurities |
Pass, USP<467>Method IV |
|
Benz (a) Pyrene |
Max.1ppb |