## 4 Discussion
pinnatifida_ the highest protein yield. In this context, the fiber content found in the analyzed seaweeds are similar to 39.47 g of broccoli (0.8 g of Fiber) or 26 g of sweet potato (0.8 g of Fiber). The protein profile is equivalent to 51.8 g of broccoli (1.4 g of protein) or 69.3 g of cauliflower (1.4 g of protein), indicating a viable terrestrial vegetable alternative [117]. Regarding calories intake, all the seaweeds show a low energy profile at 7 g or a limit daily intake (LDI) (Tables 9-12), where the maximum was registered in _L. ochroleuca_ (7 g: 19.81 Kcal; LDI: 158.48 Kcal), demonstrating that seaweeds are a low caloric food source. For example, these species contain similar calories to 93 g of asparagus (20 Kcal), 148 g of tomato (25 Kcal), and lower than 67 g of lime or 147 g of peach. This demonstrates the possible impact of seaweeds in food security and as a key player in a nutritious food diet where vegetables and fruits do not satisfy all the needs of the human diet [5; 117]. Thus, seaweeds can be key for the future sustainability of the food intake by humans, based on their potential in various macro- and micro-nutrients (as a food supplement) [5]. But, most important of all is that seaweeds do not compete by arable land and freshwater [5]. Nevertheless, the main risk to human life is the over intake of seaweed due to the low daily recommend dose of several micro- and macro-nutrients [118]. It is obvious that the seaweeds have a promissory potential to substitute vegetables, making a link between food security and supply, as possible food for the growing human population. There are also more benefits of using seaweeds as food supplements, such as health benefits of their components, turning them in nutraceuticalts [5]. Furthermore, there are also secondary metabolites, which can enhance a positive impact on the human welfare. Moreover, the phenolic compounds are being studied, aiming for the mitigation or curing some of the most common medical concerns today, such as cardiovascular, diabetic, neurodegenerative, and mental disorders [25; 42; 119]. Algal phenolic compounds, especially phlorotannins, have exceptional antioxidant propertiesdue to their capacity to chelate reactive oxygen species, avoiding oxidative stress and cell damage as a result [119; 120; 121]. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & & & \multicolumn{4}{c}{**Limit Daily Intake**} \\  & & & **(42 g DW)** & & \\ \hline
**Typology** & **Compound** & **Quantity** & **\% DRI** & **Quantity** & **\% DRI** & **DRI** \\ \hline
**S** & **Phosphorus (mg)** & 15.5722 & 2.225\% & 93.4332 & 13.348\% & 700 \\  & & Calcium (mg) & 42.6496 & 5.331\% & 255.8976 & 31.987\% & 800 \\  & & Magnesium (mg) & 29.8655 & 7.964\% & 179.193 & 47.785\% & 375 \\  & & Potassium (mg) & 38.7121 & 1.936\% & 232.2726 & 11.614\% & 2000 \\  & & Sodium (mg) & 98.3178 & 16.386\% & 589.0968 & 98.318\% & 600 \\  & & Iron (mg) & 0.4774 & 3.410\% & 2.8644 & 20.460\% & 14 \\  & & Copper (mg) & 0.014 & 1.400\% & 0.084 & 8.400\% & 1 \\  & & Zinc (mg) & 0.1939 & 1.939\% & 1.1634 & 11.634\% & 10 \\  & & Manganese (mg) & 0.0266 & 1.330\% & 0.1596 & 7.980\% & 2 \\ \hline
**S** & **A**sh (g) & 1.3006 & ND & 7.8036 & ND & ND \\  & & Total lipid (g) & 0.0441 & 0.063\% & 0.2646 & 0.378\% & 70 \\  & & Fatty Acids (mg) & 245.91 & 0.56\% & 1475.46 & 3.35\% & 44,000 \\  & & Fiber (g) & 0.616 & 2.464\% & 3.696 & 14.784\% & 25 \\  & & Protein (g) & 1.6478 & 3.296\% & 9.8868 & 19.774\% & 50 \\  & & Nitrogen-Free & & & & & \\  & & Extractives (g) & 3.3908 & 1.304\% & 20.3448 & 7.825\% & 260 \\  & & Energy (Kcal) & 20.58 & 1.029\% & 123.48 & 6.174\% & 2000 \\ \hline \hline \end{tabular}
\end{table} 
Table 11: Nutritional value in 7 g of _S. polyshides_ according to the established Dietary Reference. Intake (DRI) and its food intake limit using the DRI [5; 9]. ND—not determined.