HH-Tamine30胺专用柱 食用油中三甲胺测定毛细管柱

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食用油中三甲胺测定毛细管柱
食用油中三甲胺测定毛细管柱 详细信息：

名称：石英毛细管柱
固定相：二甲基聚硅氧烷（需碱性脱活处理）
规格：30m*0.32mm*5um
型号：HH-Tamine30

 

现代的油脂精炼是以脱胶为基础的，毛油中的胶质以磷脂为主，故脱胶也称为脱磷。大豆油“鱼腥味”产生的原因。

浩瀚色谱（山东）应用技术开发有限公司通过感官评定和顶空固相微萃取气质联用（HS SPME GC MS）相结合的方法，发现形成的三甲胺（TMA）是大豆油产生“鱼腥味”的主要原因，而磷脂中的磷脂酰胆碱（PC）是TMA的前体物质，当大豆油中PC含量达到1450mg/kg时，110°C反应18h，能闻到明显的“鱼腥味”；同时发现：TMA浓度与油脂中PC含量、储藏温度和储藏时间呈正相关，而磷脂中其它组分，如磷脂酰乙醇胺（PE），磷脂酰肌醇（PI）和磷脂酸（PA），能提高PC的热稳定性，减少TMA的产生；通过加速氧化试验发现，PC不会显著增加油品的色泽，而PE等其他磷脂组分对油品的色泽加深较明显。


食用油中三甲胺测定毛细管柱  测试谱图：




Capillary Column for Determination of Trimethylamine in Edible Oil
Capillary column for determination of trimethylamine in edible oil

Name: Quartz Capillary Column
Stationary phase: dimethyl polysiloxane (requires alkaline deactivation treatment)
Specification: 30m*0.32mm*5um
Model: HH-Tamine30

 



Modern oil refining is based on degumming. The gum in crude oil is mainly phospholipids, so degumming is also called dephosphorization. The reason for the "fishy smell" of soybean oil.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. used a combination of sensory evaluation and headspace solid phase microextraction and gas mass spectrometry (HS SPME GC MS) and found that the formed trimethylamine (TMA) is a "fishy smell from soybean oil". The main reason is that the phosphatidylcholine (PC) in the phospholipid is the precursor of TMA. When the PC content in soybean oil reaches 1450mg/kg, react at 110°C for 18 hours, and you can smell a clear fishy smell. "; At the same time it was found that: TMA concentration is positively correlated with PC content in oil, storage temperature and storage time, while other components in phospholipids, such as phosphatidylethanolamine (PE), phosphatidylinositol (PI) and phosphatidic acid (PA), It can improve the thermal stability of PC and reduce the production of TMA; through accelerated oxidation tests, it is found that PC does not significantly increase the color of oil, while other phospholipid components such as PE deepen the color of oil more obviously.


Test spectrum of capillary column for determination of trimethylamine in edible oil: 



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