Plant thickening agent capable of being drawn, and preparation method and application thereof
A kind of thickener and plant technology, which is applied in the field of drawing plant thickener and its preparation, can solve the problem of single function and achieve the effect of improving the overall performance and good anti-oxidation and anti-aging effect
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[0036] The invention discloses a preparation method of a drawing plant thickener. Raw materials are leached with a polyol solution, followed by solid-liquid separation and removal of polyols to obtain a drawing plant thickener, wherein the raw materials include aloe vera, natto or okra.
[0037] The method utilizes polyalcohol extraction to extract the stringing characteristics of plants for the first time, which is easy to operate, avoids the use of various complex extraction reagents and processes, and realizes the full extraction of viscous polysaccharides in plants. The thickener has multi-functional effects such as drawing and thickening. In this regard, the research of the present invention speculates that viscous polysaccharides can be effectively polymerized in the presence of polyols to form long chains and become high molecular substances, thus having the effect of drawing and thickening.
[0038] In a preferred embodiment, the raw material is aloe, preferably aloe v...
Embodiment 1
[0054] A preparation method of a drawing vegetable thickener, specifically:
[0055] (1) Aloe vera was selected and crushed in a low-temperature wet method at 0°C to obtain a homogenate.
[0056] (2) In step 1, add 60v / v% propylene glycol aqueous solution and 0.1w / v% activated carbon, stir in a water bath at 95°C for 0.5h, the ratio of solid to liquid is 1:4, and the stirring rate is 300rpm / min.
[0057] (3) Centrifuge at 10,000 rpm for 20 min, take the supernatant, perform ultrafiltration with a pore size of 0.002 μm, discard the filtrate, remove propylene glycol, and obtain a retentate.
[0058] (4) Freeze-dry the retentate in step 3 to obtain a wire-drawing thickener.
Embodiment 2
[0060] A preparation method of a drawing vegetable thickener, specifically:
[0061] (1) Aloe vera was selected and pulverized by a low-temperature wet method at 4°C to obtain a homogenate.
[0062] (2) In step 1, add 40v / v% propylene glycol aqueous solution and 1w / v% activated carbon, stir in a water bath at 85°C for 2h, the ratio of solid to liquid is 1:1, and the stirring rate is 400rpm / min.
[0063] (3) Centrifuge at 10,000 rpm for 20 min, take the supernatant, perform ultrafiltration with a pore size of 0.002 μm, discard the filtrate, remove propylene glycol, and obtain a retentate.
[0064] (4) Freeze-dry the retentate in step 3 to obtain a wire-drawing thickener.
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