Method for preparing soybean oil rich in natural vitamin E
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A technology of natural vitamins and soybean oil, applied in edible oil/fat, food science, application, etc.
Inactive Publication Date: 2016-03-02
NORTHEAST AGRICULTURAL UNIVERSITY
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However, with the gradual deepening of people's understanding of artificial antioxidants, people have doubts about t...
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specific Embodiment approach 1
[0006] Embodiment 1: A method for preparing soybean oil rich in natural vitamin E, characterized in that the natural vitamin E extracted from soybean deodorized distillates is backfilled into soybean oil to prepare soybean oil rich in natural vitamin E It is achieved through the following steps: 1. First, pretreat the soybean deodorized distillate, then put the pretreated soybean deodorized distillate into a supercritical extraction device, and adjust the extraction time to 2, 3, 4, 5, 6h , extraction pressure 12, 14, 16, 18, 20MPa, extraction temperature 30, 35, 40, 45, 50°C, CO 2 Flow rates of 1, 1.5, 2, 2.5, 3mL / min are used to extract phytosterols; 2. Take 4 parts of first-grade soybean oil and add the mass fraction extracted from soybean deodorized distillate to 0%, 0.01%, and 0.02% respectively , 0.03%, 0.04% of natural vitamin E, placed in an oven at 60 ° C to measure its peroxide value and acid value every six days, and get the best backfilling amount.
specific Embodiment approach 2
[0007] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the extraction time is adjusted for 2, 3, and 4 hours to extract vitamin E. Other components and steps are the same as the specific implementation method one.
specific Embodiment approach 3
[0008] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, the extraction pressure is adjusted to 14, 16, and 18 MPa to extract vitamin E. Other components and steps are the same as the specific implementation method one.
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Abstract
The invention provides a method for preparing soybean oil rich in natural vitamin E. According to the method, natural vitamin E is extracted out of soybean oil deodorized distillation and purified, then natural antioxidant vitamin E of the soybean oil is returned to first-level soybean oil in a backfilled mode, the natural vitamin E is extracted under the best extraction condition, the obtained extraction rate is 96.2%, the acid value and peroxide value of soybean oil obtained after the vitamin E is added do not reach the critical value within 60 days, and thus artificial antioxidant is replaced. By means of the method, the natural antioxidant of the soybean oil is returned to the first-level soybean oil in the backfilled mode, the economic cost is saved, the nutrition value of the soybean oil is saved, and the shelf life of the soybean oil is prolonged.
Description
[0001] The invention relates to the field of oil processing, in particular to a method for preparing soybean oil rich in natural vitamin E. Background technique [0002] Vitamin E, also known as the anti-sterility vitamin, is one of the earliest vitamins discovered by people. Vitamin E is a general term for a group of chemical structures related to Tocopherol, Tocotrienol and other derivatives that can more or less display the biological activity of d-α-tocopherol. Vitamin E has two kinds of chemical synthesis and natural products. Natural vitamin E is a mixture of four tocopherols (α-, β-, γ-, δ-) and four tocotrienols (α-, β-, γ-, δ-), with dextrorotatory properties , chemically synthesized vitamin E is a racemate, and the bioavailability of natural vitamin E is much higher than that of chemically synthesized vitamin E. Studies have shown that the bioavailability of natural d-α-tocopherol is 2 to 8 times that of synthetic vitamin E. [0003] In nature, vitamin E is widely ...
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