Method for preparing agar with high-temperature and low-concentration alkali

Abstract

The invention discloses a method for preparing agar with a high-temperature and low-concentration alkali. The method for preparing agar comprises the following steps: S1, drying raw material grass forproducing agar in the sun; S2, preparing hot alkaline water used in a soaking pool, putting sodium hydroxide and the like into the soaking pool, and fully dissolving in hot water; S3, soaking the rawmaterial grass dried in the sun in the soaking pool, and starting up a water pump outside the pool to make water in the pool circularly flow; S4, after the soaking is finished, discharging the alkaline water, then additionally injecting clear water, rinsing for multiple times until the pH of discharged water is neutral, then fishing out the raw material grass after soaking, and draining for standby application; S5, performing a following procedure according to an agar production technology, namely, heating the water-drained raw material grass in boiling water (with the temperature of more than or equal to 95 DEG C) and dissolving to obtain a colloid, carrying out hot coarse filtration, cooling the colloid liquid, squeezing and dehydrating, sized-dicing colloid sheets and carrying out hotdrying, milling, sieving the powder (100 mesh), and packaging; and S6, packaging. The method can shorten the original production cycle by half, improves the production efficiency, greatly improves theeconomic efficiency, and reduces the high alkaline sewage treatment difficulty.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a method for preparing agar with high-temperature and low-concentration alkali. Background technique [0002] Agar is a polysaccharide extracted from seaweed, and it is one of the most widely used seaweed gels in the world. It is widely used in many aspects such as food industry, pharmaceutical industry, daily chemical industry, bioengineering, etc. Since the water temperature in the production process is as high as 85°C±2°C, if the amount of raw materials such as Gracilaria, which is used to extract agar, is too much when soaking , It will cause poor circulation of hot water, resulting in local overheating in the soaking tank and making some raw materials rotten, which may make production impossible. If the amount of raw materials is too small, the productivity will be reduced. Contents of the invention [0003] The invention shortens the original agar production cycle by half, r...

AI Technical Summary

Problems solved by technology

It is widely used in many aspects such as food industry, pharmaceutical industry, daily chemical industry, bioengineering, etc. Since the water temperature in the production process is as high as 85°C±2°C, if the amount of raw materials such as Gracilaria, which is used to extract agar, is too much when soaking , will cause poor circulation of hot water, resulting in local overheating in the soaking tank and making some raw materials rotten, which may make production impossible. If the amount of raw materials is too small, the productivity will be reduced

Images