Cigarette filter containing material selectively decreasing biological harm of carbon monoxide (CO) in smoke and preparation method of cigarette filter
A selective filter technology, which is applied in e-liquid filter elements, tobacco, food science, etc., can solve problems such as easy degradation, easy inactivation, and reduced filter acceptance, so as to reduce harmful substances in smoke and maintain mild fixing conditions , to ensure a sustained effect
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Embodiment 1
[0026] Embodiment 1, fixation of hemoglobin
[0027] In this example, hemoglobin was weighed and dissolved in a phosphate buffer solution with a pH of 6.5 to prepare a solution with a concentration of 10 μmol / L; the prepared solution was centrifuged at a speed of 3000 r / min for 30 minutes, and the liquid was divided into three layers: The first layer is a thin white solid, which is the precipitation layer of fat-soluble substances; the second layer is a red transparent liquid, which is a pure hemoglobin aqueous solution; the third layer is a dark red precipitate of other impurities. Draw the second layer of pure hemoglobin aqueous solution, add PEG-PCL amphiphilic diblock copolymers (the number-average molecular mass of which is respectively 8000, or 6000, or 4000) accounting for 3% to 7% of the total amount of hemoglobin, at 25 ℃ with a constant temperature oscillator for 8 hours; the resulting solution was centrifuged at 2000rpm for 10 minutes, the resulting supernatant was ...
Embodiment 2
[0042] Example 2, PEG-PCL amphiphilic diblock copolymer self-assembled nano-mesoporous material (HINH) of immobilized hemoglobin is added to the filter
[0043] HINH-1, HINH-2, and HINH-3 in Table 2 were added to the tow material of the filter tip respectively, and the HINH added accounted for 15% of the total weight of the filter tip tow, and the obtained filter tip was Filters containing biohazardous materials that selectively reduce CO in flue gas.
[0044] Selective harm reduction performance of filters containing biohazard reduction materials that selectively reduce CO in flue gas
[0045] The self-assembled nanometer mesoporous filter material loaded with different amounts of hemoglobin was made into a HINH-containing cigarette filter, that is, a filter containing a biohazard-reducing material that selectively reduces CO in smoke. Under the condition that the formula of the cigarette leaf group and other auxiliary materials remain unchanged, the filter tip containing th...
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