Mohri Satoshi, Kanauchi Makoto
Department of Food Management, Miyagi University, Sendai, Miyagi, Japan.
Methods Mol Biol. 2019;1887:109-117. doi: 10.1007/978-1-4939-8907-2_10.
Fishy odor of fish flesh (meat) presents a severe problem for marine production. The main cause of fishy odor is trimethylamine (TMA), which increases during storage. It is produced from trimethylamine oxide (TMAO), an osmosis-regulating substance in fish cells that functions by a reduction reaction. Bacterial growth in fish meat increases TMA. Its odor reduces the commercial value of the meat. Technologies for its regulation and elimination are desired. This chapter presents a description of the use of lactic acid to eliminate TMA. The lactic acid is producible safely by bacteria during food processing using picric acid-toluene.A method of eliminating TMA was demonstrated using Lactobacillus plantarum H78. Furthermore, an assay method was explained for reducing TMA in fish meat by fermenting the H78 strain.
鱼肉的腥味给海洋生产带来了严重问题。腥味的主要原因是三甲胺(TMA),其在储存过程中会增加。它由氧化三甲胺(TMAO)产生,TMAO是鱼类细胞中的一种渗透调节物质,通过还原反应发挥作用。鱼肉中的细菌生长会增加TMA。其气味降低了鱼肉的商业价值。因此需要调节和消除腥味的技术。本章介绍了使用乳酸消除TMA的方法。乳酸可由细菌在使用苦味酸 - 甲苯的食品加工过程中安全产生。使用植物乳杆菌H78证明了一种消除TMA的方法。此外,还解释了一种通过发酵H78菌株来降低鱼肉中TMA的检测方法。