Composition for photodynamic reaction containing extract of Ligularia fischeri as an effective ingredient, antimicrobial, antifungal and sterilization composition including the same, and sterilization method using the composition for photodynamic reaction

A sterilization method comprising:

• bringing a composition including Ligularia fischeri or an ethanolic fraction thereof as an active ingredient into contact with food, fruit, meat, fresh meat, water, a nutrient solution, a plant, a crop, a container, a packaging material, or an appliance;
• irradiating for 1 minute to 15 minutes using a red light-emitting diode (LED) lamp the food, fruit, meat, fresh meat, water, nutrient solution, container, packaging material, or appliance, which is in contact with the composition, with an absorbable wavelength of excitation light having a wavelength of 660 nm at an intensity of 1 W/m2 to 600±20 W/m2;
• and
• reducing and killing bacteria and fungi on the food, fruit, meat, fresh meat, water, nutrient solution, plant, crop, container, packaging material, or appliance irradiated by the excitation light.