Accumulation of oxyresveratrol in ramulus mori upon postharvest storage

Jun Ho Kim, Ki Hyun Kim, Min Young Lee, Young Hee Lim, Jeong Keun Kim

Research output: Contribution to journalArticle

Abstract

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 30oC for 7 days. The optimal temperature and postharvest storage time for oxyresveratrol accumulation was 30oC 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.

Original languageEnglish
Pages (from-to)98-104
Number of pages7
JournalKorean Journal of Food Science and Technology
Volume50
Issue number1
DOIs
Publication statusPublished - 2018 Feb 1

Keywords

  • Morus alba L.
  • Oxyresveratrol
  • Postharvest
  • Ramulus mori
  • Stilbenoid

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology

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