Penaeus orientalis 껍질에서 6종류의 carotenoids가 분리 정제되었다. β-carotene(3.1%), doradexanhin ester(16.1%). astaxanthin diester(54.8%) , zeaxanthin monoester(7.9%), astaxanthin monoester(12.4%) 그리고 astaxanthin(5.7%)의 함량과 구조들은 UV/VIS. IR, ^1H-NMR. MS 스펙트라와 검화반응. 아세탈화반응. 알릴릭그룹. 에폭시 반응 그리고 환원반응을 이용하여 결정되었다. Carotenoids와 에스테르 결합된 지방산들은 주로 C_(18:1), C_(16:0), C_(16:1)이고 나머지 지방산들도 소량 함유되었다.
6 carotenoids were separated and identified in Penaeus orientalis shells. β-carotene (3.1%), doradexanthin ester (16, 1 %), astaxanthin diester (54.8%) , zeaxanthin monoester (7.9%), astaxanthin monoester(12.4%) and astaxanthin(5.7%) were structurally elucidated by UV/VIS, IR, ^1H-NMR, MS spectra and organic reactions such as saponification, acetylation, allylic group, epoxide test and reduction (NaBH_4), respectively. Fatty acids esterified with carotenoid were mainly C_(18:1), C_(16 :0) and C_(16:1), and the others are minors.