Investigation on aldehyde concentration distribution in the cooking oil fumes

• Main Authors: Yi-Chun Kuo, 郭怡君
• Other Authors: Chiung-Yu Peng
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/40679148790173419933

碩士 === 高雄醫學大學 === 職業安全衛生研究所 === 101 === Cooking oil fumes (COFs) are the major air pollutants indoors. There exist a lot of chemicals in COFs. These include volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs),aromatic amine, and long-chain aldehydes. Among the chemicals in COFs, aldehydes play an important role in human health. Several aldehydes have been considered as carcinogens , such as acrolein, and trans,trans-2,4-decadienal( t-t-2,4-DDE) .COFs also have been found to be associated with cervical cancers and lung cancers. The objectives of this research are to investigate the aldehyde composition and concentrations in COFs in terms of cooking oils, cooking methods and cooking materials, and to estimate possible health risks while exposure to these aldehydes. In this study, COFs from four frequent oils (soybean oil, sunflower oil, rapeseed oil, palm oil) applied in a heating-up condition and three different cooking methods (deep frying, pan frying and stir frying ), two different cooking materials (potato, meat) were investigated, respectively. To avoid aldehyde emissions from petroleum fuels, by an electric stove was used. The cooking oil fumes were collected using DNPH-coated glass fiber filters (25 mm,1um) and 2,4-DNPH cartridges (21026-U SUPERLCO) connected in-serially for measuring particulate- phase and gas-phase aldehydes, respectively. After sampling, samples were extracted by acetonitrile and analyzed by a HPLC/UV system. Results indicated that most abundant aldehydes were hexaldeyde,trans-2-heptenal trans,trans-2,4-Decadienal among these cooking conditions. In terms of less aldehyde emission, different cooking materials had their better cooking methods. Potato was better cooked by stir-frying, while meat was better cooked by pan-frying. By comparing emissions between different cooking oils, palm oil was the better oil for cooking both potato and meat. Main aldehydes werehexaldeyde,trans-2-heptenal , trans,trans-2,4-hecadienal、and nonanal. Cancers risks of these aldehydes should be further investigated.