Accumulation of oxyresveratrol in Ramulus mori upon postharvest storage

숙성에 의한 뽕나무 상지 내 옥시레스베라트롤 축적

  • Kim, Jun-Ho (Marine Bioenergy R&D Consortium) ;
  • Kim, Ki-Hyun (Marine Bioenergy R&D Consortium) ;
  • Lee, Min-Young (Department of Chemical Engineering & Biotechnology, Korea Polytechnic University) ;
  • Lim, Young-Hee (Department of Public Health Science (BK21 PLUS Program), Graduate School, Korea university) ;
  • Kim, Jeong-Keun (Department of Chemical Engineering & Biotechnology, Korea Polytechnic University)
  • 김준호 (해양바이오에너지 생산기술개발연구센터) ;
  • 김기현 (해양바이오에너지 생산기술개발연구센터) ;
  • 이민영 (한국산업기술대학교 생명화학공학과) ;
  • 임영희 (고려대학교 보건과학과(BK21 PLUS Program)) ;
  • 김정근 (한국산업기술대학교 생명화학공학과)
  • Received : 2017.09.22
  • Accepted : 2017.12.04
  • Published : 2018.02.28


Oxyresveratrol (trans-2, 3', 4, 5'-tetrahydroxystilbene), found in many plants including grape, peanut and mulberry, is a phytoalexin, an antimicrobial and antioxidative substance that rapidly accumulates in areas infected by the pathogen. We examined the accumulation of oxyresveratrol in nine Morus alba L. cultivars with respect to storage time and temperature postharvest and infection with GRAS microorganisms. Among the nine cultivars, the Suwon cultivar showed the highest oxyresveratrol content (9.6-fold increase) postharvest, when stored at $30^{\circ}C$ for 7 days. The optimal temperature and postharvest storage time for oxyresveratrol accumulation was $30^{\circ}C$ and 6 days. When Ramulus mori was infected with five microorganisms, the accumulation of oxyresveratrol increased over 4-fold in response to B. coagulans infection. These results suggest that oxyresveratrol accumulation is influenced by storage temperature, storage time, Ramulus mori cultivars, and microbial attack. Therefore, postharvest storage for an appropriate time period at a suitable temperature might be a useful way to industrially produce Ramulus mori cultivars with high oxyresveratrol content.


Supported by : 농림축산식품부


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