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侯先生 13691497252 The market for nutritional and dietary supplements is growing tremendously. And, as these nutraceutical and dietary supple¬ment markets grow, the need for simple, rugged, and accurate high performance liquid chromatography (HPLC) methods to analyze vitamins becomes increasingly important. Vitamins encompass a wide range of organic compounds. They are required by the human body in only minute quantities. Yet, they have significant impact at the cellular level. Vitamins play a vital role in converting fat and carbohydrates to energy, regu¬lating metabolism, and other bodily functions. Vitamins can be broadly classified into two groups, water-solu-ble vitamins and fat-soluble vitamins. Fat-soluble vitamins include such constituents as Vitamin A (retinol) and Vitamin D3 (cholecalciferol). Vitamin A has been found to play an important role in proper growth and eye function, while Vitamin D is required for proper bone and tooth growth.
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