The invention relates to the agri-food industry and the pharmaceutical and cosmetic industry. The invention is suitable for use in the agri-food industry, in particular in the production of food stabilisers extracted from Locust bean gum. The invention relates to a method for dehulling locust bean seeds by means of the combined action of an enzyme and ultrasounds, leading to a softening of the seed coat forming the shell of the seed. The detachment of the seed coat is made easier, and the structural and functional integrity of the hydrolysed compounds is preserved.