Detecting method of moisture in mixed type feed supplement flavouring agent
A feed additive and detection method technology, applied in the field of feed additive analysis and detection, can solve problems such as inaccurate results, and achieve the effects of simple operation, accurate and stable results, and reduced damage
Inactive Publication Date: 2014-09-03
CHONGQING MINTAI NEW AGROTECH DEV GRP CO LTD
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Problems solved by technology
Because the fragrance is formulated from a variety of monomer raw materials, which contain many volatile substances (such as natural animal and vegetable oils), the principle of the drying weight loss method is to evaporate the water through drying, and subtract the original weight from the remaining after drying. The weight is the weight of the water. Since the drying will also cause the volatilization of other volatile substances in the fragrance agent except water, that is, the components of these volatilized weight loss substances are all calculated as water during calculation, which leads to inaccurate results.
Karl Fischer reagent has a strong oxidizing property and will react with some unstable raw materials such as aldehydes or phenols in fragrances, which will also lead to inaccurate results
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[0025] The detection method of moisture in the mixed type feed additive flavoring agent of the present invention, concrete detection steps are as follows,
[0026] 1) First prepare the flask, condenser tube and collection tube with connecting tube and scale for the test, and the scale is accurate to 0.01mL.
[0027] 2) Accurately weigh an appropriate amount of feed flavoring agent and place it in a flask, then add water-insoluble organic reagents (such as toluene, n-octane, n-butyl ether) and mix evenly; the ratio of feed flavoring agent to organic reagents is 1: 2-2.5, preferably 1:2.
[0028] 3) Airtightly connect the upper end of the flask 1 containing the feed flavoring agent and organic reagent to the connecting pipe 4 at the upper end of the collecting pipe 2 (specifically wrapped with asbestos rope), and at the same time extend the lower end of the condensing pipe 3 into the collecting pipe 2; See the specific connection figure 1 .
[0029] 4) Place the flask on an e...
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The invention discloses a detecting method of moisture in a mixed type feed supplement flavouring agent. The detecting method comprises the following steps of arranging the flavouring agent in a boiling flask, adding an organic reagent which does not dissolve in water, and uniformly mixing; slowly heating the boiling flask, when the organic reagent begins to boil, regulating the temperature so as to enable the lower end of a condenser pipe to drip 2-4 condensate at every second in a collecting pipe; when the moisture is fully distilled off, stopping heating, washing the inner wall of the condenser pipe by using the organic reagent, brushing the organic reagent by using a test tube brush, distilling, and cooling to the room temperature; and directly reading the volume of the moisture of the lower layer when the moisture in the collecting pipe and the organic reagent are completely layered, and the volume is the moisture content in the flavouring agent. The detecting method provided by the invention has the advantages that the operation is simple, the used equipment is easily available, a condition that a result is accurate and stable is guaranteed through multiple measures, meanwhile, the moisture is safe and non-poisonous for detecting persons, the damage of an instrument is alleviated, and the detecting method is particularly suitable for proper motion detection of fodder factories and fodder annexing agent factories.
Description
technical field [0001] The invention relates to the detection of feed raw material components, specifically the detection of moisture in mixed feed additive fragrances. The detection method mixes the flavors to be tested with water-insoluble organic reagents, and then measures the separated moisture content by distillation. The invention belongs to the technical field of analysis and detection of feed additives. [0002] Background technique [0003] There are different additives in the feed industry, such as sweeteners, flavoring agents, antifungal agents, etc. These additives are often mixed additives, which contain a certain amount of water. According to the new feed additive labeling law, the moisture content must be marked on the product packaging, so the detection of moisture in feed additives is imperative. [0004] The conventional methods for moisture detection include the loss on drying method and the Karl Fischer reagent method, but neither of these two methods ...
Claims
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IPC IPC(8): G01N5/04
Inventor 陶有伦田长江周俊
Owner CHONGQING MINTAI NEW AGROTECH DEV GRP CO LTD