Department of Food Science and Technology, School of Agriculture and Biology , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China.
Key Laboratory of Urban Agriculture (South), Ministry of Agriculture , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China.
J Agric Food Chem. 2018 Oct 24;66(42):11124-11132. doi: 10.1021/acs.jafc.8b04096. Epub 2018 Oct 12.
This study investigated the effects of three light intensities on four types of palm oils during consecutive storage for 12 months at 4 °C. The concentrations of 4-hydroxy-2- trans-hexenal (4-HHE), 4-hydroxy-2- trans-nonenal (4-HNE), polycyclic aromatic hydrocarbon (PAH)4, and PAH8 in the oils significantly increased with the increasing light intensity after storage. The red palm oil had the lowest rate of increase of 4-HNE, while 5° palm oil had the highest rate of increase of the PAH, OPAH, 4-HNE, and peroxide values during storage. For the same type of oil, OPAHs increased significantly under a light intensity of 6000 lx (lx) after storage. The increasing concentrations of 9FO, ATQ, and BaPO in the oils stored at 6000 lx showed a positive relation to their corresponding parent PAHs, indicating that PAH oxidation occurred at 6000 lx. The results suggest that light intensity and β-carotene may control PAHs, OPAHs, and 4-hydroxy-trans- alkenals for vegetable oil storage, transportation, and retail.
本研究调查了三种光照强度对四种棕榈油在 4°C 下连续储存 12 个月的影响。在储存后，油中 4-羟基-2-反式-己烯醛（4-HHE）、4-羟基-2-反式-壬烯醛（4-HNE）、多环芳烃（PAH）4 和 PAH8 的浓度随着光照强度的增加而显著增加。红棕榈油中 4-HNE 的增长率最低，而 5°棕榈油在储存过程中 PAH、OPA、4-HNE 和过氧化物值的增长率最高。对于同一类型的油，在储存后光照强度为 6000 lx（lx）下，OPA 明显增加。在 6000 lx 光照下储存的油中 9FO、ATQ 和 BaPO 的浓度增加与相应的母体 PAH 呈正相关，表明在 6000 lx 下发生了 PAH 氧化。研究结果表明，光照强度和β-胡萝卜素可能控制植物油储存、运输和零售过程中的 PAHs、OPA 和 4-羟基-反式-烯醛。
