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Composite antistaling agent for storing wild rice stem and method of preparing the same

A technology of composite fresh-keeping and wild rice stems, applied in the field of applied chemistry

Inactive Publication Date: 2008-09-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the research of nano-calcium carbonate as film-aiding agent of sodium carboxymethyl cellulose has not yet been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] ① Take 5g of nano-calcium carbonate, add about 1L of water at 70°C, stir evenly and keep it warm, then add 1g of sodium stearate, set the volume to 1 liter, and keep it in a water bath for 30 minutes to modify. ②Take 100g of sodium carboxymethyl cellulose, heat and dissolve it in water, add 50g of D-iso-Vc sodium after cooling, and set the volume to 9 liters, then mix it evenly with the 1 liter of solution obtained in the above step ① to obtain Zizania for storage Composite preservative 10 liters.

[0010] According to the above preparation ratio and procedure, the required amount of composite preservative for storing Zizania is prepared.

[0011] Select the wild wild rice that is basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above compound preservation solution for 3 to 5 minutes, remove and dry, then put the wild wild rice in a plastic box, and place it at a temperature of 8 to 10°C Store for 6-10 days.

Embodiment 2

[0013] ① Take 10g of nano-calcium carbonate, add about 1L of water at 80°C, stir evenly and keep it warm, then add 2g of sodium stearate, set the volume to 1 liter, and keep it in a water bath for 45 minutes to modify. ②Take 150g of sodium carboxymethyl cellulose, heat and dissolve it in water, add 100g of D-iso-Vc sodium after cooling, and set the volume to 9 liters, then mix evenly with 1 liter of the solution obtained in the above ①. Obtain 10 liters of composite antistaling agents for storing wild rice stems.

[0014] According to the above preparation ratio and procedure, the required amount of composite preservative for storing Zizania is prepared.

[0015] Select the wild wild rice that is basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above compound preservation solution for 3 to 5 minutes, remove and dry, then put the wild wild rice in a plastic box, and place it at a temperature of 8 to 10°C Store for 6-10 da...

Embodiment 3

[0017] ① Take 15g of nano-calcium carbonate, add about 1L of water at 90°C, stir evenly and keep it warm, then add 3g of sodium stearate, set the volume to 1 liter, and keep it in a water bath for 60 minutes to modify. ②Take 200g of sodium carboxymethyl cellulose, heat and dissolve it in water, add 150g of D-iso-Vc sodium after cooling, and set the volume to 9 liters, then mix evenly with 1 liter of the solution obtained in the above ①. Obtain 10 liters of composite antistaling agents for storing wild rice stems.

[0018] According to the above preparation ratio and procedure, the required amount of composite preservative for storing Zizania is prepared.

[0019] Choose the wild wild rice that is basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above compound preservation solution for 3-5 minutes, take it out and dry it, then put the wild wild rice in a plastic box and place it at a temperature of 8-10°C Store for 6-10 d...

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PUM

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Abstract

A compound antistaling agent for preserving the zizania aquatica is provided with the formula components by mass percent as follows: nanon calcium carbonate 0.05%-0.15 %, sodium stearate 0.01%-0.03%, sodium carboxymethylcellulose 1%-2%, sodium D-isoascorbate 0.5%-1.5% and water for the rest. The method for preparing the compound antistaling agent measuring in every 10 liters includes the steps: adding 5-15g nanon calcium carbonate to the water at the temperature of 70-90 DEG C, stirring evenly and insulating, adding 1-3g sodium stearate, producing one liter, insulating for 30-60 min in water bath and modifying; heating and dissolving 100-200g sodium carboxymethylcellulose in the water, cooling, adding 50-150g sodium D-isoascorbate, producing 9 liters; evenly mixing the two solutions and obtaining the compound antistaling agent for preserving the zizania aquatica. The method includes soaking the shelled zizania aquatica in the compound antistaling agent for 3-5 min, dragging out of the antistaling agent, drying and preserving. The method can effectively prevent the zizania aquatica from browning and losing water, maintain the eating quality and the commodity value and extend the storage period.

Description

technical field [0001] The invention belongs to the technical field of applied chemistry and relates to a fresh-keeping technology for agricultural products, in particular to a composite preservative for storing dehulled wild rice stems and a preparation method thereof. Background technique [0002] Zizania is a special aquatic vegetable in my country, which is loved by people for its crisp and tender texture, delicious taste and rich nutrition. In particular, its rich dietary fiber has a significant preventive effect on modern civilization diseases such as obesity and hyperlipidemia. At present, Zizania is mainly sold in the form of shells, because Zizania husks account for about 30% of the weight of Zizania, and cleaning and shelling are quite cumbersome, which affects urban sanitation. Compared with wild rice stems without shells, shelled wild rice stems are favored by consumers for their convenience, cleanliness and high edible rate. We refer to this kind of fresh frui...

Claims

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Application Information

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IPC IPC(8): A23B7/153A23B7/154A23B7/157
Inventor 罗自生徐庭巧解静褚萍丽徐晓玲
Owner ZHEJIANG UNIV
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