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Purification method for 5-grade grains of lotus root starch

A purification method, the technology of lotus root starch, is applied in the field of purification of starch granules of different sizes, which can solve the problems of starch granule shape, uneven size, low purity, etc., and achieve the effects of low cost, simple operation, and improved accuracy and efficiency

Active Publication Date: 2015-07-22
YANGZHOU UNIV
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Problems solved by technology

Therefore, we first need to purify lotus root starch granules of different sizes, but there is no technical method for purifying lotus root starch granules of different sizes. Directly applying existing methods for purifying barley, wheat, corn or potato starch will cause great errors. The shape and size of starch granules are not uniform, and the purity is very low

Method used

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  • Purification method for 5-grade grains of lotus root starch
  • Purification method for 5-grade grains of lotus root starch
  • Purification method for 5-grade grains of lotus root starch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] Embodiment: (the flow process of whole purification process sees figure 1 )

[0047] (1) Purification of very small starch granules:

[0048] ①Preparation of starch suspension: Weigh 2.5g of lotus root raw starch into a 250mL graduated cylinder, add 250mL of double-distilled water, and make an aqueous suspension with a concentration of 1%.

[0049] ② Mixing: Take a rubber sheath, put it on the mouth of the measuring cylinder to ensure the seal, press the mouth of the measuring cylinder with the palm of the right hand, grasp the bottom of the measuring cylinder with the left hand, turn the measuring cylinder upside down 10 times, fully mix the suspension, and take off the leather sheath.

[0050] ③Stationary settlement: place the measuring cylinder on a horizontal table, after settling for 40 minutes, extend the bottom of the 25mL pipette to 1cm below the liquid surface, carefully draw the supernatant into a beaker, repeat several times until the supernatant is complete...

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Abstract

The invention discloses a purification method for 5-grade grains of lotus root starch. Lotus root starch grains are divided into five parts, namely very large (45 to 55 micron), large (35 to 45 micron), medium (25 to 35 micron), small (15 to 25 micron), and very small (0 to 15 micron) according to sizes. The method comprises the steps of starch suspension preparation, mixing, still standing for settling, supernatant suction, collection for storage and the like. The method has the advantages that the operation is simple, fast and low in cost while the purity of each grade of starch grains is high. Therefore, technical support is provided for research of the structures and performance characteristics of starch of different starch grains; the meaning for machining and application of lotus root starch grains is important.

Description

technical field [0001] The invention relates to a purification technology of starch granules of different sizes, in particular to a purification method of lotus root starch granules of different sizes. Background technique [0002] Starch is the main energy storage material in plants and plays an important role in plant growth and development. Granule size is one of the important morphological indicators of starch granules. Starch granules of different sizes exhibit different structural and functional characteristics. There are significant differences in chemical composition, functional properties and molecular structure; corn and potato large starch granules have higher amylose content, peak viscosity, hot slurry viscosity and final viscosity, while small starch granules have higher gelatinization temperature. In addition, starch grains of different sizes have different application values. For example, barley grains rich in small starch grains are not suitable for brewing ...

Claims

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Application Information

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IPC IPC(8): C08B30/04
Inventor 韦存虚林令尚蔡灿辉
Owner YANGZHOU UNIV
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