The present invention relates to a method for producing a fermented soybean oil which comprises 4 to 6 wt% of mustard seed oil, 35 to 45 wt% of walnut seed oil, 35 to 45 wt% of lobed seed oil, 4 to 6 wt% And 6% by weight of a vegetable oil, and mixing and sealing the mixed oil in a soft capsule.본 발명은 겨자씨유 4 ~ 6wt%, 호두나무씨유 35 ~ 45wt%, 소엽씨유 35 ~ 45wt%, 산초나무씨유 4 ~ 6wt%, 후추씨유 4 ~ 6wt%, 팔각회향씨유 4 ~ 6wt%를 혼합하고, 혼합유를 연질캅셀에 담아서 밀폐시킨 것을 특징으로 하는 겨자씨유를 함유한 식욕감소 효과가 있는 기능성 식품에 관한 것이다.
