Device and method for detecting propyl gallate

Abstract

The invention discloses a device and a method for detecting propyl gallate, and relates to the technical field of detection of propyl gallate. A first motor is connected with a rotating disc, the rotating disc is connected with a clamping groove, the outer portion of a rolling shaft is connected with a sealing disc, an output shaft of a second motor is connected with a rotating support, a connector is fixedly connected into the rotating support, a microporous filtering membrane is fixedly connected into the connector, and the rotating support is movably connected with a first clamping block through a nut. In this way, a second clamping block outside a cleaning wheel can be moved to one side of a test tube through an output shaft of a third motor, then a telescopic rod is started, the second clamping block is contracted inwards through the contraction end of the telescopic rod, the test tube is clamped, the cleaning wheel is rotated to enable a cleaning pool to clean the test tube, propyl gallate and methyl alcohol liquid are mixed more sufficiently, and the cleaning effect is better. Liquid in the test tube on the other side is purer, and impurities in propyl gallate and methanol liquid are still settled to the bottom, so that preparation is made for filtration.

Description

technical field [0001] The invention relates to the technical field of detection of propyl gallate, in particular to a detection device and method for propyl gallate. Background technique [0002] Propyl gallate, also known as propyl gallate, as a common oil-soluble antioxidant has been widely used in oil and oily foods, fried foods, meat foods, pollen foods, cosmetics, etc. The food additive propyl gallate is obtained by heating and esterifying gallic acid and n-propanol under the condition of an acidic dehydrating agent. White to light brown crystalline powder, or slightly milky white needle crystal. Odorless, slightly bitter, tasteless aqueous solution. PG is insoluble in water, slightly soluble in cottonseed oil, peanut oil and lard. The pH value of its 0.25% aqueous solution is about 5.5. Propyl gallate is relatively stable. When it encounters metal ions such as copper and iron, it will develop a color reaction and turn purple or dark green. It is hygroscopic, unsta...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a detection device and method for propyl gallate, which solves the problem that the staff often make careless mistakes in a certain step, or after the staff detects propyl gallate, they still have to leave Cleaning test tubes in the testing room, wasting time and resources

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