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Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology)  2010, Vol. 11 Issue (4): 286-291    DOI: 10.1631/jzus.B0900344
Biotechnology     
Accumulation of 1-deoxynojirimycin in silkworm, Bombyx mori L.
Hao Yin, Xin-qin Shi, Bo Sun, Jing-jing Ye, Zu-an Duan, Xiao-ling Zhou, Wei-zheng Cui, Xiao-feng Wu
Key Laboratory of Agricultural Ecology and Environment, College of Forestry, Shandong Agricultural University, Taian 271018, China, Institute of Sericultural Sciences of Sichuan Province, Nanchong 637000, China, College of Animal Science, Zhejiang University, Hangzhou 310029, China
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Abstract  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 wordsSilkworm      1-deoxynojirimycin (1-DNJ)      Accumulation      Bombyx mori     
Received: 30 October 2009      Published: 29 March 2010
CLC:  Q966  
Cite this article:

Hao Yin, Xin-qin Shi, Bo Sun, Jing-jing Ye, Zu-an Duan, Xiao-ling Zhou, Wei-zheng Cui, Xiao-feng Wu. Accumulation of 1-deoxynojirimycin in silkworm, Bombyx mori L.. Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology), 2010, 11(4): 286-291.

URL:

http://www.zjujournals.com/xueshu/zjus-b/10.1631/jzus.B0900344     OR     http://www.zjujournals.com/xueshu/zjus-b/Y2010/V11/I4/286

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