Method for measuring phospholipid in lipid

A method of determination, oil technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, which can solve problems such as cumbersome operation, long time-consuming carbonization, and difficult control of the carbonization process. Achieve the effect of simple and safe operation, shortening carbonization time and shortening ashing time
CN102175672AInactive Publication Date: 2011-09-07NORTHWEST UNIV(CN)
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST UNIV(CN)
Publication Date
2011-09-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for measuring phospholipid in lipid, and the method comprises the following steps: carbonizing, ashing and dissolving of lipid; and molybdenum blue colorimetry measurement of phosphorus, wherein the lipid is carbonized by adding concentrated sulphuric acid, and a hydroxide, a carbonate or a bicarbonate of an alkali metal. In the invention, the concentrated sulphuric acid is used for pre-carbonizing, and alkali is added for reacting, so that the carbonization of different amounts of various lipids can be completed within 15 minutes, splashing and combustion generated in a direct electric furnace heating carbonization procedure are prevented, and the carbonization time is shortened; the hydroxide, carbonate or bicarbonate of the alkali metal is used for displacing ZnO, so that the soluble phosphate with higher thermal decomposition temperature is generated, and the ashing time is shortened; and the ashed product can be dissolved and filtered directly, sothat the following operations are simpler and safer.
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Description

technical field

[0001] The invention relates to a method for determining phospholipids in oil. Background technique

[0002] During the oil refining process, the phospholipids in the crude oil will cause foaming, color reversion and oxidation stability of the oil, affecting the flavor of the oil, and the phospholipid-rich crude oil foot is the main raw material for the production of phospholipid health products. The high phospholipid feedstock oil in the biodiesel production process will lead to severe inactivation of lipase. The phospholipid content in liposome is an important index to measure its stability. Therefore, in the production of oil products, phosphorus content is a very important detection index.

[0003] At present, the detection methods of phospholipids include colorimetric method, turbidimetric method, gravimetric method, TLC, HPLC, IR, NMR and so on. Nephelometric and gravimetric methods have limited application due to low detection accuracy; TLC method i...

Claims

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