To provide a food for health supplement, food for nutritional supplement, food processed food, soft drink containing a medicine, quasi-drug, cosmetics, functional display food, nutritional functional food, food for specified health use Functions using silk glands including a pair of right and left ejection orifices, chitin, philippine gland, anterior yarn gland, middle yarn gland, and posterior yarn gland existing in larvae of a silkworm, Bombyx mori of the family Silkworm, Bombyx mori It is in obtaining sexual material.SOLUTION: In a silk gland including a discharge port, a chitin substance, a filippic gland, an anterior yarn gland, a middle yarn gland, and a posterior yarn gland existing in a pair of right and left larvae of a larva of the silkworm, Bombyx mori (Bombyx mori) , It is possible to obtain a functional material containing a high amino acid value which was not conventionally found.Selection drawing None【課題】本発明は、医薬品、医薬部外品、化粧品、機能性表示食品、栄養機能食品、特定保健用食品を含む健康補助用食品、栄養補助用食品、加工食品、清涼飲料水に使用される、カイコガ科カイコガ属カイコガ(Bombyx mori)の幼虫の体内に左右1対存在する吐糸口、キチン質、フィリッピ腺、前部糸腺、中部糸腺、後部糸腺を含む絹糸腺を用いた機能性素材を得ることにある。【解決手段】カイコガ科カイコガ属カイコガ(Bombyx mori)の幼虫の体内に左右1対存在する吐糸口、キチン質、フィリッピ腺、前部糸腺、中部糸腺、後部糸腺を含む絹糸腺に酵母を添加することで、従来には無かったアミノ酸高値含有の機能性素材が得られる。【選択図】なし