Sodium alginate is a natural polymer derived from brown seaweed, known for its remarkable thickening, gelling, and stabilizing properties. Widely employed in the food industry, sodium alginate is utilized to create gels and provide texture in various culinary applications, such as in the formation of gel-like spheres through molecular gastronomy techniques. It also finds use in the pharmaceutical and textile industries, where it serves as a thickener in liquid medicines and a sizing agent in textile printing, respectively. Sodium alginate's biocompatibility and ability to form gels in the presence of calcium ions make it a versatile and valuable substance in numerous fields.