The method comprising the steps of: providing a kind likely to red of one or more kinds selected from chondrus (a) or Porphyra, the present invention, the volume ratio of alcohol to water of 1 to 5 carbon atoms in such unlikely red it is (b) the available There 1: 9 to 9: adding a mixed solvent is 1, extracting the active ingredient while maintaining at a temperature of 30~60 ℃, including to a solid material such seems red and the balance (c) the active ingredient and a method of producing a non-toxic UV screening for extracts containing the steps of separating the solid matter such as red look and residual supernatant by filtration and solvent mixture. From the use of chondrus or Porphyra as raw material for extraction, a method for producing a non-toxic UV blocking extract according to the present invention, Maikosuporin like amino acids yield of UV-blocking for extracts containing (Mycosporine-like amino acids MAA) But, I have a kind benefits so green, a high relatively more pronounced than extracts from plants such as red and seems kind so brown. It should be noted that, from cytotoxicity and light toxicity is very low, UV blocking for extracts from chondrus or Porphyra irritant dermatitis and at the same time, without giving foreign body sensation caused by residual water or feel heavy on the skin, it can be used as the main component of the UV-blocking agent does not have side effects such as toxicity and allergic reaction or skin irritation contact dermatitis, such as phototoxic dermatitis or photoallergic.本発明は、(a)アマノリ属またはツノマタから選ばれる1種以上の紅そう類を用意するステップと、(b)前記用意された紅そう類に炭素数1~5のアルコール対水の体積比が1:9~9:1である混合溶媒を添加し、30~60℃の温度において維持して有効成分を抽出するステップと、(c)前記有効成分及び残余の紅そう類固形物を含む混合溶媒をろ過して上澄み液と残余の紅そう類固形物とに分離するステップと、を含む非毒性紫外線遮断用抽出物を製造する方法を提供する。本発明に係る非毒性紫外線遮断用抽出物を製造する方法は、抽出原料としてアマノリ属またはツノマタを用いることから、マイコスポリン様アミノ酸(Mycosporine-like amino acids;MAA)を含む紫外線遮断用抽出物の歩留まりが、緑そう類、褐そう類及び紅そう類植物からの抽出物よりも相対的に顕著に高いというメリットを有する。なお、アマノリ属またはツノマタから抽出された紫外線遮断用抽出物は光毒性及び細胞毒性が非常に低いことから、皮膚に重たい感じ若しくは残余の水による異物感を
