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Volatile components of Juglans mandshurica root shell
Juglans mandshurica Max., a fast growing hardword species in family of Juglandaceae, has an extensive distribution ranging from China, Siberia to Korean peninsula. The tree has been used as a folk medicinal plant for treatment of esophageal, gastric, cardiac and lung cancer [1–3]. By comparison of mass fragmentation pattern of each component with two modern MS libaries namely Wiely 6 and NIST, the volatile compounds from root shell of J. mandshurica were determined as three naphthoquinone derivatives such as 1,4-naphthoquinone (I), 5-hydroxy-1,4-naphthoquinone (Juglone, II) and 5-hydroxy-2-methyl-1,4-naphthoquinone (plumbagin, III), and one aliphatic alcohol, 3-ethyl-2-methyl-1-pentene-3-ol (IV). Evaluated by quantitative investigation with authentic compounds of the three corresponding naphthoquinone derivatives, compounds I and II were the major volatile components in J. mandshurica root shell and their yields were around 54.4µg/g and 21.3µg/g, respectively.
Acknowledgements: This work was supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009–0094074), Natural Science Foundation of Tianjin City (09JCYBJC15800) and Foundation for the Development of Science and Technology in Tianjin Universities (No. 20080616).
References: 1. Kim, TW. (1994) The Woody Plants of Korea in Color. Kyohak Press, Seoul, pp. 58–59.
2. Kim, JK. et al. (2006)J. Kor. Wood Sci. Technol. 34(6): 51–60.
3. Min, BS. et al. (2003) Biol. Pharm. Bull. 26(7):1042–1044.