報告書番号

V09012

タイトル（和文）

業務用厨房における調理排気中化学成分の計測(1)-ガス厨房における計測-

タイトル（英文）

Chemical characteristics of cooking exhaust gas in a commercial kitchen (1)-Measurement at gas kitchen-

概要 （図表や脚注は「報告書全文」に掲載しております）

調理排気は様々な化学成分が含まれており，ヒトの健康に影響を与えることが懸念されている。本研究では，様々な調理を行う業務用厨房において調理排気を計測し，オイルの成分である脂肪酸10種および有害性が指摘される多環芳香族炭化水素19種についてその発生量を明らかにし，さらに，それぞれの物質の発生要因を検討した。その結果，回転釜およびフライヤーによる一回の調理あたりの脂肪酸発生量は7.0E2mg～2.9E4mg，PAH発生量は4.3E3ng～8.5E4ngと推計された。脂肪酸の主成分は植物性油脂に多く含まれるオレイン酸，リノール酸などであり，調理に用いられるオイルの影響が大きいことが示された。PAHの主成分はピレン，フェナントレンなどであるが，フライヤーからはベンゾ[e]ピレンなど，分子量の大きな化学種が排出されていることが示唆された。推計した発生量を基に厨房空気中のPAH濃度を計算すると5.1ng m^-3～100ng m^-3となり，工業地帯や道路沿道など，比較的汚染度の高い地域の大気中濃度と同程度になり得ることが分かった。

概要 （英文）

Since cooking exhaust gas contains various chemical components including harmful substances, it may adversely affect human health. The main elements of the oil-mist in the gas are fatty acids, although polycyclic aromatic hydrocarbons (PAH) which are harmful to the human health are also included. In this study, we examined the relationship between the cooking method and the chemical characteristics of fatty acids and PAH. We measured 10 species of fatty acids and 19 species of PAH in a commercial kitchen where various types of cooking were performed. The amount of fatty acids emitted during a cooking experiment by using a braising pan and a fryer was 7.0x10^2 mg - 2.9x10^4 mg, and the amount of PAH was 4.3x10^3ng - 8.5x10^4ng. The major components of the fatty acids were oleic acid and linolic acid which were mostly contained in the vegetable oil used for cooking. It is thought that the chemical characteristics of the fatty acids were affected by the oil used for cooking. The major components of the PAH were pyrene and phenanthrene. It is suggested that substances with large molecular masses, such as benzo [e] pyrene, were emitted from the fryer. The PAH concentration in the kitchen air is calculated from the measured amounts of PAH. The calculation showed that the concentration was in the range from 5.1 ng m^-3 to 100ng m^-3, which is comparable to the concentrations in industrial and roadside areas.

報告者

キーワード