mbt shoes Chewing gum in the rapid determination o

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Chewing gum in the rapid determination of polyphenols

Results Tab. 1Experimentresultsofstandardputin-recycle concentration m_1) spiked carp mg) smoke concentration mg) Average concentration m_1) average pigsty% standard deviation Ol1o29I598826888878888888888222222225988O79O7777877866666666OOOOOOOOIllIllIl2222222288O69oo737877898O7777777833333333O0OOOOOO222222225,, 2009 No. 4 Volume 36, No. 192 Guangdong Chemical General [link widoczny dla zalogowanych] gdchem. com169 CONTINUED 1 concentration c / (mg.L4) plus marrow (mg.LI) absorbance measured concentrations () of the average concentration c, (mg.LI) average recovery of standard deviation s R / S% D26-31.1301. 12811311.1301.1321.1291.1271.13547.747.647.847.747.847.747647.947.710160.1102328.01.1731.17611741.1771.1751.17511741.17949.549.649.649. 749649.649649.849.610220.090.18 shown in Table 1, simple method,[link widoczny dla zalogowanych], the average recovery was 95.1% ~ 102.2% and relative standard deviation less than 0.29%. The experimental results show that the method is feasible. 2.3 precision experiments that take a chewing gum sample mass of about 1.0g or so (accurate to O.0001g),[link widoczny dla zalogowanych], in the 50mL beaker, dissolved with 20mL25% ethanol, transferred to 50mL flask, and with 25% ethanol to the mark,[link widoczny dla zalogowanych], shake well. Pipette 2.0mL of sample treatment solution prepared in 25mL colorimetric tube, constant volume with 25% ethanol, and the same way as the standard curve measured absorbance. The samples were 6 replicate measurements, the results in Table 2: Table 2, the precision of test method in Tab. 2Precisionof ~ cilitymethod Sample Number Weight m / g absorbance A concentration of Q (mg · L) measured value / (g ·) average / (g '..) Standard deviation sRSD /% 0.94790.9332095760.9783103401.142003300 .3240.33803430.3620.40314.179.34513.929324145 l9.47093920. O60.5914.729.4031551937817.239432 Table 2 shows, using simple method to test, the standard deviation was 0. O6, the relative standard deviation was 0.59%. The measured concentration of polyphenols in chewing gum 9.392g/kg. So simple method for the determination of polyphenols in chewing gum is feasible. And the method steps and more simple, less reagent,[link widoczny dla zalogowanych], it can be simplified method is the preliminary view that a quick determination of chewing gum in an ideal way of tea polyphenols. 3 Conclusion The determination of polyphenols simple method for the determination wavelength: wavelength 274nnl. Analysis of the polyphenol content of gum samples 9.392g & g. Standard addition recovery experiment was that the average recovery was 95.1% ~ 102.2%, relative standard deviation less than 0.29%, the initial analysis is feasible. Simple method is relatively simple steps,[link widoczny dla zalogowanych], required fewer drugs, lower cost. Therefore, it can initially determine the simple method is a quick quantitative analysis of chewing gum in an ideal way of tea polyphenols.
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