Sucrose seed crystal and preparation method thereof

A technology of sucrose crystals and sucrose, which is applied in the field of sucrose seed crystals and its preparation, and can solve problems such as uneven particle size of crystallized products, uneven crystal shape, and easy preservation of colored substances

Active Publication Date: 2020-10-23
GUANGDONG PROVINCIAL BIOENGINEERING INST (GUANGZHOU SUGARCANE IND RES INST)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The particle size distribution range of this seed crystal is large, the seed crystal contains a large number of fine crystals, and the crystal shape is not smooth, which leads to the easy preservation of the coloring substance and the uneven particle size of the crystallized product, and the secondary nucleation phenomenon is more serious when using this seed crystal, which leads to the actual The number of crystal seeds is difficult to control, and there are many fine crystals in the product, which makes the crystallization cooking process take a long time, high energy consumption, and the product is difficult to recover during separation, resulting in certain losses

Method used

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  • Sucrose seed crystal and preparation method thereof
  • Sucrose seed crystal and preparation method thereof

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preparation example Construction

[0024] The connection relationship structure diagram of the preparation system of the sucrose seed crystal in the embodiment is as follows figure 1 As shown, wherein 1-sugar solution tank, 2-jacket concentration device, 3-ultrasonic treatment device, 4-centrifugal separation device, 5-seed crystal collection device, 6-low temperature bath, 7-ethanol tank. The jacket concentration device 2 is connected to the low temperature bath 6 , and the ultrasonic treatment device 3 is connected to the ethanol tank 7 .

[0025] The temperature not specified in the examples refers to the normal temperature of 10-40°C.

Embodiment 1

[0027] A kind of preparation method of sucrose seed crystal of the present embodiment, concrete steps are as follows:

[0028] (1) dissolving white granulated sugar with a sucrose content of ≥99.8% in water to form a sugar solution with a mass concentration of 50%, and then concentrating the sugar solution at -10°C to obtain a concentrated sugar solution with a sucrose mass concentration of 82% ;

[0029] (2) Add 1 times the quality of ethanol to the concentrated sugar solution in step (1), and use 0.1W / cm 2 , the ultrasonic frequency is 2×10 4 Hz ultrasonic treatment for 120s, then filtered, collected and dispersed in ethanol solution for preservation at a temperature of 10°C to obtain sucrose seed crystals. The sucrose seed prepared by the present embodiment is observed under a microscope (see figure 2 ), the edges and corners are clear, the surface is smooth, the particle size is in the range of 12-20 μm as measured by the particle size analyzer, and the sucrose content...

Embodiment 2

[0033] A kind of preparation method of sucrose seed crystal of the present embodiment, concrete steps are as follows:

[0034] (1) dissolving white granulated sugar with a sucrose content of ≥99.8% in water to form a sugar solution with a mass concentration of 60%, and then concentrating the sugar solution at 0°C to obtain a concentrated sugar solution with a sucrose mass concentration of 85%;

[0035] (2) Add 5 times the quality of ethanol to the concentrated sugar solution of step (1), at an ultrasonic intensity of 1W / cm 2 , the ultrasonic frequency is 2×10 6 Hz ultrasonic treatment for 60s, then filtered, collected and dispersed in ethanol solution for preservation at a temperature of 40°C to obtain sucrose seed crystals. The surface of the sucrose crystals prepared in this example is smooth after observation, the particle size is in the range of 10-20 μm as measured by a particle size analyzer, and the sucrose content is greater than or equal to 99.8%; under the same qual...

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Abstract

The invention belongs to the field of sugar industry, and discloses a sucrose seed crystal and a preparation method thereof. The preparation method comprises the steps: dissolving cane sugar in waterto prepare a sugar solution with the mass concentration of 50%-70%, and then concentrating the sugar solution at the temperature of -10 DEG C to 4 DEG C to obtain a concentrated sugar solution with the cane sugar mass concentration of 82%-90%; and adding ethanol into the concentrated sugar solution, treating for 5-120 s under an ultrasonic condition, filtering, collecting, dispersing and preserving to obtain the sucrose seed crystal. According to the method, the seed crystal is prepared under the low-temperature condition, sucrose conversion can be avoided, and the seed crystal quality is improved. The obtained seed crystal is uniform in granularity and smooth in surface. The reduction of treatment difficulty of subsequent procedures is facilitated and improvement of the quality of sucrosecrystal products is facilitated.

Description

technical field [0001] The invention belongs to the field of sugar industry, and in particular relates to a sucrose seed crystal and a preparation method thereof. Background technique [0002] White granulated sugar is a kind of table sugar. It is mainly made of sugar cane or beet as raw material, and is processed into sucrose crystals by extracting sugar juice, cleaning treatment, boiling crystallization and honey separation. In the smelting and crystallization process, the quality of the seed crystal directly affects the production efficiency and quality of the product. [0003] At present, in the initial stage of production in the sugar industry, the commonly used seed crystals are mostly made from sugar products through grinding. Although such seeds are easy to obtain, they have the following unavoidable disadvantages. The particle size distribution range of this seed crystal is large, the seed crystal contains a large number of fine crystals, and the crystal shape is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B30/02C13B50/00
CPCC13B30/021C13B30/022C13B50/00Y02A40/90
Inventor 张平军莫柳珍苏慧慧黎鹏汤静洁黄俊生高俊永高亚飞
Owner GUANGDONG PROVINCIAL BIOENGINEERING INST (GUANGZHOU SUGARCANE IND RES INST)
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