1: INTRODUCTION
All foods contain nutrients with different composition and concentration. Nutrients are organic or mineral compounds required by the body to survive and grow. Nutrients must be obtained from diet, since the human body does not synthesize them (1–6). Nutrients are used to produce energy, to move, to respire, to grow, to reproduce, to excrete wastes, and so on. In other words, without the supply of nutrients from foods, the human body does not function normally, and this can lead to disease and even death.
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