Journal of Zhejiang University SCIENCE B

, Volume 11, Issue 4, pp 286–291 | Cite as

Accumulation of 1-deoxynojirimycin in silkworm, Bombyx mori L.



1-deoxynojirimycin (1-DNJ) contents in the silkworm, Bombyx mori, at different developmental stages and tissues were investigated by using reverse-phase high-performance liquid chromatography. The 1-DNJ contents of silkworm larvae change significantly with their developmental stages. The male larvae showed higher accumulation efficiency of 1-DNJ than the females and also a significant variation was observed among the silkworm strains. The present results show that tissue distribution of 1-DNJ was significantly higher in blood, digestive juice, and alimentary canal, but no 1-DNJ was observed in the silkgland. Moreover, 1-DNJ was not found in silkworms fed with artificial diet that does not contain mulberry leaf powder. This proves that silkworms obtain 1-DNJ from mulberry leaves; they could not synthesize 1-DNJ by themselves. The accumulation and excretion of 1-DNJ change periodically during the larval stage. There was no 1-DNJ in the newly-hatched larvae and 1-DNJ was mainly accumulated during the early and middle stages of every instar, while excreted at later stages of larval development. Further, it is possible to extract 1-DNJ from the larval feces and it is optimal to develop the 1-DNJ related products for diabetic auxiliary therapy.

Key words

Silkworm 1-deoxynojirimycin (1-DNJ) Accumulation Bombyx mori 

CLC number



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Copyright information

© Zhejiang University and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Hao Yin
    • 1
    • 2
  • Xin-qin Shi
    • 1
  • Bo Sun
    • 1
  • Jing-jing Ye
    • 1
  • Zu-an Duan
    • 1
  • Xiao-ling Zhou
    • 1
  • Wei-zheng Cui
    • 1
  • Xiao-feng Wu
    • 3
  1. 1.Key Laboratory of Agricultural Ecology and Environment, College of ForestryShandong Agricultural UniversityTaianChina
  2. 2.Institute of Sericultural Sciences of Sichuan ProvinceNanchongChina
  3. 3.College of Animal ScienceZhejiang UniversityHangzhouChina

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