• Preventive Nutrition and Food Science
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• v.1 no.1
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• pp.1-5
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• 1996

Rapid analytical method was investigated to determine precursors of N-nitrosamine such an nitrite and nitrate in squid(Illex illecebrosus and Sepiell maindroni), codfish(Gadus marcrocephalus)and flatfish(Paralichthys olivaceus) by ion chromatography(IC) and colorimetric methods. Recoveries of nitrite and nitrate in fish tissues were 89~98.7% and 94.1~99.8% for IC, and 98.4~103.7% and 67.7~102.2% for colori-metric method, respectively. Using IC, nitrite was not detected and nitrate was 0.89~1.23mg/kg, while using colorimetric method, nitrite and nitrate were NO~0.08mg/kg and 0.3~0.42mg/kg, respectively. Therefore, the IC method showed better recoveries, and was applicable to extract nitrite and nitrate simultaneously, and is simpler compared with colorimetric method in analyzing nitrite and nitrate from fish tissues.

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.377-378
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.379-380
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• 2006

• Proceedings of the Korean Society of Plant Pathology Conference
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• 1999.04a
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• pp.25.2-25
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• 1999

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.122.2-123
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• 2000

No Abstract, See Full Text

• The Korean Journal of Soil Zoology
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• v.2 no.2
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• pp.104-114
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• 1997

Herein, 29 species of the ground beetles are reported from the Cheju Island (=Quelpart Is.). Of these, 18 species are new to Cheju Island.

• Proceedings of the Korean Nuclear Society Conference
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• 1999.10a
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• pp.97.2-97
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• 1999

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.168-171
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• 2006

The Haenyeo of Jeju exists as a unique human resource only in Korea and Japan in the world. Especially, the anti-Japan opposition movement of the Haenyeo of Jeju, which had started to get the right to live on their own in 1931, had developed as the national liberation movement by struggling against a colonial of Japan and the official regulation association that was a plundering organization of Japan. Accordingly, there is making an effort to register Jeju's women divers as The National Treasure in UNESCO's Memory of the world. In this research, we are going to make stuff like a digital storytelling, characters, animation movies, games, and hompage to let our children understand and succeed the spirit and culture of the Haenyeo. We'll also use these contents for the education. We examine ways to recreate the culture resources related to the Haenyeo who gradually vanishes.

• Journal of Life Science
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• v.14 no.3
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• pp.521-524
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• 2004

This experiment was carried out to analyze genetic characteristics and to develop the breed specific DNA marker for Cheju-native horse. If this marker contains high repetitive sequences, it is possible to convert a RAPD marker of interest into a single-locus PCR marker called a sequence characterized amplified region(SCAR). Twenty six Cheju-native horse and Fifty thoroughbred genomic DNA were pooled and PCR. were accomplished using 800 random primers. Comparing the pooled DNA from Cheju-native horse and thoroughbred, we found 9 primers which identified markers present in the pooled DNA from breed but absent in the other breed. Among 9 random primers, 6 primers were thoroughbred specific and 3 primers were Cheju-native horse specific. Testing individual horse revealed that 5 marker showed the similar band pattern between Cheju-native horse and Thoroughbred. However, 4 marker were wholly absent in breed while present in the other breed. UBC $126_{3500bp}$, UBC $162_{500bp}$, and UBC $244_{1200bp}$ was detected only Thoroughbred and UBC $562_{560bp}$was detected Cheju-native horse, respectively. After determining of the cloned breed-specific fragment sequence, we designed the SCAR-primers and carried out PCR. Compared to random primer, RAPD-SCAR primer didn't show significantly higher specific band. However, RAPD analysis is useful for genetic characterization of Cheju-native horse.

• Food Science and Biotechnology
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• v.16 no.5
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• pp.728-733
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• 2007

Bamboo grass, Sasa quelpaertensis, is a native plant to Jeju Island, Korea. The leaves of Sasa plants are widely used in traditional Korean medicine to treat inflammation-related diseases. We investigated the effect of hot water extract from Sasa quelpaertensis leaves (HWE-SQ) on nitric oxide (NO) production and nuclear $factor-{\kappa}B\;(NF-{\kappa}B)$ activation in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. HWE-SQ inhibited LPS-induced NO production and inducible NO synthase (iNOS) protein expression in a dose-dependent manner. Reporter gene assays indicated that HWE-SQ decreases LPS-induced $NF-{\kappa}B$ transcriptional activation. However, HWE-SQ did not affect the phosphorylation and degradation of inhibitory ${\kappa}B{\alpha}\;(1{\kappa}B{\alpha})$. HWE-SQ also directly inhibited iNOS enzyme activity in a dose-dependent manner. These results suggest that HWE-SQ suppresses NO synthesis in macrophages by attenuating $NF-{\kappa}B-mediated$ iNOS protein expression and inhibiting iNOS enzymatic activity, thereby implicating a mechanism by which HWE-SQ is able to ameliorate inflammation-related diseases by limiting excessive or prolonged NO production in pathological events.