Microcapsule embedded with Pu'er tea essential oil as well as preparation method and application thereof
A technology of microcapsules and Pu'er tea, which is applied in the direction of microcapsule preparation, microsphere preparation, essential oil/fragrance, etc., which can solve the problems of limited application range, limited embedding ratio of flavor substances, non-scalability, etc., and achieve specificity Strong, mature raw material preparation method, easy to transport effect
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Embodiment 1
[0042] A preparation method of microcapsules embedding Pu'er tea essential oil, comprising the following steps:
[0043] (1) Starch hydrolysis:
[0044] Step A: first prepare a waxy cornstarch solution with a mass concentration of 15% using a phosphate buffer solution, stir continuously, heat in a water bath to 90° C. and keep for 35 minutes, so that the starch is fully gelatinized and presents a transparent state;
[0045] Step B: Cool down the gelatinized starch solution in step A to 50°C (including the center temperature of the beaker), add a certain amount of pullulanase with an enzyme activity of 1000U / g, the weight ratio of starch to enzyme is 70:1, Stir for 4 hours to fully hydrolyze the starch;
[0046] Step C: Take the starch solution hydrolyzed in step B in a test tube, centrifuge it on a high-speed centrifuge at 1000r / min for 2 minutes, remove the sediment at the bottom of the test tube (starch and impurities that have not been completely hydrolyzed), take the uppe...
Embodiment 2
[0065] In this example, the method of sensory suction is used to evaluate whether the sustained-release performance of the microcapsules prepared in Example 1, that is, the embedded Pu-erh tea essential oil is improved compared with the un-embedded Pu-erh tea essential oil.
[0066] In the experiment under the same conditions, the microcapsules prepared in Example 1 and the unembedded Pu'er tea essential oil were respectively added to cigarette paper by coating and rolled into cigarettes (addition amount was 0.5%, according to cigarette paper By weight), compared and appraised and sucked and found: the microcapsules prepared in Example 1 can also maintain a strong fragrance after 60 days, but the unembedded Pu'er tea essential oil then disappears after 5 days.
[0067] Therefore, compared with the unembedded Pu'er tea essential oil, the microcapsules of the present invention which embed the Pu'er tea essential oil greatly improves the slow-release property of the Pu'er tea esse...
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