著者

Kenji KUMAZAWA Nao SAKAI Hiroko AMMA Satoshi SAKAMOTO Masaki KODAMA Yoshiyuki WADA Osamu NISHIMURA

出版者

Japan Society for Bioscience, Biotechnology, and Agrochemistry

雑誌

Bioscience, Biotechnology, and Biochemistry (ISSN:09168451)

巻号頁・発行日

vol.74, no.6, pp.1231-1236, 2010-06-23 (Released:2010-06-23)

参考文献数

17

被引用文献数

5

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An aroma concentrate of the mat rush (igusa) was prepared by combining solvent extraction with the solvent-assisted flavor evaporation (SAFE) technique. An aroma extract dilution analysis (AEDA) applied to the volatile fraction revealed 51 odor-active peaks with FD factors between 43 and 47. Among the perceived odorants, twelve peaks with the higher FD factors (≥46) were proved to be the most important components of the characteristic aroma in mat rush. Eleven odorants were identified or tentatively identified from the twelve peaks as methional, (E,Z)-2,6-nonadienal, (E)-2-nonenal, (E,E)-2,4-nonadienal, (E,E,Z)-2,4,6-nonatrienal, trans-4,5-epoxy-(E)-2-decenal, 4-hydroxy-2,5-dimethyl-3(2H)-furanone, 3-hydroxy-4,5-dimethyl-2(5H)-furanone, isovaleric acid, methyl anthranirate, and vanillin. The FD factors of the odor-active peaks in dried mat rush were observed to be much higher than those in raw mat rush. This finding suggests that the drying process during manufacturing of the mat rush is one of the most important factors for the formation of the characteristic mat rush aroma.

著者

Masaki Okamoto Masaki Tominaga Shigeki Shimizu Chiyo Yano Ken Masuda Masayuki Nakamura Yoshiaki Zaizen Takashi Nouno Satoshi Sakamoto Mitsuru Yokoyama Tomotaka Kawayama Tomoaki Hoshino

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

vol.56, no.24, pp.3323-3326, 2017-12-15 (Released:2017-12-15)

参考文献数

19

被引用文献数

11

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A 40-year-old female dental technician visited our hospital for the investigation of a chest X-ray abnormality. Chest computed tomography demonstrated centrilobular nodules and lung volume reduction, and her serum KL-6 level was elevated. A histological analysis of the specimens obtained on a surgical lung biopsy showed peribronchiolar fibrosis with pigmented macrophages and cholesterol clefts. An energy-dispersive X-ray analysis showed that these lung tissues contained some metals, including indium. The serum indium level was also elevated. We diagnosed this patient with pneumoconiosis caused by exposure to sandblasting certain dental metals. This is the first reported case of pneumoconiosis in a dental technician associated with exposure to indium.