Method for extracting oligosaccharide from sunflower pith core

The invention discloses a method for extracting oligosaccharide from sunflower pith cores, and belongs to the field of agricultural and sideline product processing. The method for extracting the oligosaccharide from the sunflower pith core specifically comprises the following steps: cutting off the sunflower pith core, and then adding water for soaking treatment; then putting the soaked sunflower pith cores into a mechanical stirring reaction kettle, adding water for mixing, and extracting for 30-120 minutes under the conditions that the temperature is 105-125 DEG C, air is removed, the pressure is maintained to be 0.5 Mpa, the pH value of the system is controlled to be 1.0-3.0 and the stirring speed is 150-200 revolutions per minute; and after the extraction is finished, filtering and separating, and drying the filtrate to obtain the oligosaccharide. The method has the advantages of high oligosaccharide extraction efficiency, greenness, safety, cost saving, no new pollution to the raw materials, and facilita