el jugo - juice, sap, something of substance or the essential nature of somethingSpanish example: Las azúcares que posee la manzana son una fuente inmediata de energía y el jugo de manzana provee fluidos esenciales para el cuerpo.
English example: The sugars that apples have an immediate source of energy, and apple juice provides fluids essential for the body.
Source: el jugo - juice, sap, something of substance or the essential nature of something (https://www.123teachme.com/spanish_feeds/word_of_the_day/2021/8/16)