High-efficient selenium-rich method for sea water vegetable

Abstract

A high-efficient selenium-enriched method for the seawater vegetables belongs to the selenium-enriched technical field of the agriculture. The present invention adopts a D-saturation optimization design and adopts seawater vegetables such as ocean asparagus and ocean chard, which are grown on the ground, as the raw materials. At the preliminary period of harvesting the seawater vegetables, the vegetables is undertaken the selenium-enriched treatment. During the treatment, the way of spraying the sodium selenite solution on the surface is adopted and the enriched selenium is sprayed for two tothree times, thereby the organic selenium content in the fresh seawater vegetables reaches more than 1u g / L, the conversion ratio of the organic selenium reaches more than 63 percent and the content ofthe remaining selenium on the surface of the fresh seawater vegetables is controlled. The present invention has the advantages that the extreme spraying-durable density of the ocean asparagus and the ocean chard is high, which can adopt the high concentration spraying solution with an appropriate pH value to perform the selenium-enriched optimization method of multi-treatment, thus the content of the organic selenium can be enhanced obviously in a short term and a higher organic selenium ratio can be obtained. The operation period of the present invention is obviously shortened and the operat ion cost is reduced.

Description

technical field [0001] A high-efficiency selenium-enrichment method for seawater vegetables belongs to the technical field of selenium-enrichment for agricultural products. Background technique [0002] At present, there are two ways to supplement selenium: one is to take inorganic selenium directly, and the other is to eat more products rich in organic selenium. It is generally believed that organic selenium foods have higher selenium supplementation efficiency than inorganic selenium, and the prospect is more promising. However, there are few natural foods rich in organic selenium, so this problem can only be solved by artificial selenium enrichment. [0003] According to the nutritional survey report of the Chinese Nutrition Society, the selenium intake of adults in my country is only 26.63 μg / day, which is far from the safe selenium intake recommended by the Health Institute of the Chinese Preventive Medicine Center of 40-240 μg / person / day and the safe amount recommende...

AI Technical Summary

Problems solved by technology

[0006] In order to obtain selenium-enriched fruits and vegetables with a certain proportion of organic selenium, one of the inventors Zhang Min (Zhang Min et al., 1997, Wuxi Light Industry University Journal) carried out different concentrations of inorganic selenium on green peppers, eggplants, cucumbers and kidney beans in different growth periods. The spraying treatment of selenium has drawn the conclusion that the treatment at the flowering stage has a better effect on the transformation of organic selenium, but the disadvantage is that the proportion of organic selenium in the four kinds of fruits and vegetables is still low, only 40.8%-50.6% due to the use of one-time enrichment of selenium , 50.6% of which is the proportion of organic selenium that can only be achieved after the optimization of selenium-enriched agronomy, and the content of organic selenium is not high

Although a higher organic selenium conversion ratio has been obtained, the organic selenium content is not high, and the entire operation cycle is very long. In actual production and application, the operating cost increases significantly