Method for extracting and purifying Mallotus nepalensis oil
A kind of jatropha oil and jacaranda technology, applied in the extraction and purification of jatropha oil, the field of jatropha oil extraction and purification, can solve the problem of bitter taste of jacaranda oil, achieve the effect of reducing high temperature process, reducing filtration resistance and reducing loss
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Embodiment 1
[0021] A method for refining and purifying jatropha oil, the steps are:
[0022] Step 1. Squeeze dried jatropha to extract crude oil; or dry jatropha and crush through a 35 or 38 or 40 or 42 or 45 mesh sieve and extract with absolute ethanol to obtain an alcohol extract of jacarnia oil;
[0023] Step 2: add 1, 2 or 3 times the amount of absolute ethanol to the crude oil extracted from Jacarna japonica, stir thoroughly and decolorize and deodorize with activated carbon filtration; or directly decolorize and deodorize the alcohol extract in step 1 with activated carbon filtration;
[0024] Step 3. Let the filtrate filtered by activated carbon in step 2 stand for 1 or 3 or 5 or 8 or 10 hours to naturally stratify, and separate the stratified solution: extract the upper ethanol phase, and the remaining lower oil phase is initially purified jacaranda oil;
[0025] Step 4, add 1:1 volume of 95 or 97 or 99% ethanol to the preliminary purified jacaranda oil obtained in step 3, then f...
Embodiment 2
[0036] A method for refining and purifying jacarnia oil, applied to the purifying and refining of rapeseed oil, the steps are:
[0037] Step 1. Crude oil is extracted from dried rapeseed;
[0038] Step 2. Heat the crude oil extracted from rapeseed to 60 or 62 or 64 or 66 or 68 or 70 degrees Celsius, and then add 1 or 2 or 3 times the amount of anhydrous water heated to 60 or 63 or 65 or 67 or 70 degrees Celsius Ethanol or 95-99% ethanol, fully stirred and miscible, decolorized and deodorized by activated carbon filtration;
[0039] Step 3. Let the filtrate filtered by activated carbon in step 2 stand for 1 or 3 or 5 or 8 or 10 hours to naturally stratify, and separate the stratified solution: extract the upper ethanol phase, and the remaining lower oil phase is initially purified rapeseed oil;
[0040] Step 4, add 1 or 3 or 5% pure water by volume to the preliminary purified rapeseed oil obtained in step 3, let stand for 5 or 8 or 10 or 14 or 17 or 20 hours, separate natural...
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