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Method for improving whiteness of Eucheuma muricatum algae powder

A technology of kylin cabbage and whiteness is applied in the field of improving the whiteness of kylin algae powder, which can solve the problems of darker, yellowish color and blackening of kylin cabbage powder, and achieve the effect of improving whiteness.

Inactive Publication Date: 2017-03-15
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color of Eucheuma powder produced by traditional methods is yellowish, dark or even black

Method used

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  • Method for improving whiteness of Eucheuma muricatum algae powder
  • Method for improving whiteness of Eucheuma muricatum algae powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 30g of Eucheuma, wash it with 500g of water, add 600g of a compound solution with a mass concentration of 9% sodium hydroxide and 11% potassium chloride, treat it at 55°C for 4 hours, wash it with water until the pH is 7, and acidify with 0.01% hydrochloric acid After Eucheuma 0.1h (solid-liquid ratio is 1:1), add mass fraction of 0.1% sodium hypochlorite for 2h (solid-liquid ratio is 1:1). After adding 95% ethanol to the described Eucheuma and treating it for 1h (the ratio of solid to liquid is 1:15), it was placed in the sun and exposed to the sun until it dried to obtain the color of Eucheuma ( Picture 1-1 ) compared to the proportional color ( figure 1 -6) Obvious whiteness, crush Eucheuma to 80 meshes, use a whiteness colorimeter to measure the whiteness, and the whiteness is 51.2%, which is 21.6% higher than that of the comparative example.

Embodiment 2

[0027] Take 30g of Eucheuma, wash it with 1500g of water, add 700g of a compound solution with a mass concentration of 10% sodium hydroxide and 12% potassium chloride, treat it at 70°C for 4 hours, wash it with water until the pH is 7, and acidify with 0.02% acetic acid After Eucheuma 0.1h (solid-liquid ratio is 1:20), add mass fraction of 0.2% sodium hypochlorite for 1h (solid-liquid ratio is 1:30). After adding 40% ethanol to the Eucheuma chinensis for 8 hours (the ratio of solid to liquid is 1:15), it was exposed to the sun until dry. Get the Eucheuma color ( figure 1 -2) Contrast ratio color ( figure 1 -6) Obvious whiteness, the Eucheuma was crushed to 80 mesh, and the whiteness was measured by a whiteness colorimeter, and the whiteness was 50.3%, which was 19.5% higher than that of the comparative example.

Embodiment 3

[0029] Take 30g of Eucheuma, wash it with 500g of water, add 600g of a compound solution with a mass concentration of 11% sodium hydroxide and 12% potassium chloride, treat it at 60°C for 6 hours, wash it with water until the pH is 7, and acidify with 0.01% oxalic acid After Eucheuma 1h (solid-liquid ratio is 1:50), add mass fraction of 0.1% sodium hypochlorite for 2h (solid-liquid ratio is 1:20). After adding 85% ethanol to the Eucheuma chinensis for 4 hours (the ratio of solid to liquid is 1:5), it was exposed to the sun until dry. Get the Eucheuma color ( figure 1 -3) Contrast ratio color ( figure 1 -6) Obvious whiteness, the Eucheuma was crushed to 80 mesh, and the whiteness was measured by a whiteness colorimeter, and the whiteness was 51.8%, which was 23.0% higher than that of the comparative example.

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Abstract

The invention discloses a method for improving the whiteness of Eucheuma muricatum algae powder. The method includes the steps of: firstly cleaning the raw material Eucheuma muricatum, under a condition of 55-70DEG C, employing a solution containing 9-11% sodium hydroxide and 11-13% of potassium chloride by mass to conduct soaking treatment for 3-6h, performing cleaning to a pH value of 7-8, adding acid with a mass fraction of 0.01% for acidification, then adding sodium hypochlorite with a mass fraction of 0.1%, employing 40-95% ethanol to perform treatment for 1-8h, then conducting solar radiation to dry, and carrying out crushing and sieving. After treatment of Eucheuma muricatum by the method provided by the invention, on the basis of guaranteeing no significant difference in terms of gel strength, ash content and other indicators, the whiteness of Eucheuma muricatum is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of seaweed product processing, and in particular relates to a method for improving the whiteness of Eucheuma genus algal flour. Background technique [0002] Eucheuma muricatum (Eucheuma muricatum), Rhodophyceae, Rhodophyceae, including Eucheuma muricatum, Kappa long-heart, Kappa auricularis, etc. It is rich in colloid, especially rich in carrageenan, easy to form hydrophilic colloid, has the characteristics of gel, thickening, emulsification, stable dispersion, etc., and is widely used in various foods (beverages, ice cream, meat products, jelly, soft sugar, etc.) processing. At present, people produce Eucheuma powder through the processes of treating Eucheuma with alkali, washing, neutralizing, decolorizing and drying. Wherein, the technical means of Eucheuma decolorization is sodium hypochlorite bleaching, as reported by Huang Jiakang etc. with 0.2% HCl acidification, 0.06% sodium hypochlorite bleaching...

Claims

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Application Information

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IPC IPC(8): A23L17/60A23L5/49
CPCA23V2002/00A23V2200/046A23V2250/082Y02A40/90
Inventor 姜泽东杨远帆洪鹏伍菱陈艳红杜希萍肖安风李利君黄高凌蔡慧农倪辉
Owner JIMEI UNIV
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