BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Solubility is reported for two fat-soluble vitamins, vitamin E (R-tocopherol) and vitamin K3 (menadione), in aqueous mixtures containing ethanol at 33 °C. Both vitamins have very low solubility in pure water owing to hydrophobic repulsion.

Detailed explanation-2: -Because vitamin K is fat-soluble, it is best to eat vitamin K foods with some fat to improve absorption.

Detailed explanation-3: -Vitamin K3 is a synthetic, artificially produced form of vitamin K that doesn’t occur naturally. This is unlike the other two forms of vitamin K-vitamin K1, known as phylloquinone, and vitamin K2, called menaquinone. Vitamin K3 may be converted into K2 in your liver.

Detailed explanation-4: -Vitamin K3 is soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide (DMF). The solubility of vitamin K3 in these solvents is approximately 10, 20, and 30 mg/ml, respectively. Vitamin K3 is sparingly soluble in aqueous buffers.