The Difference Between Green Seaweed Extract and Black Seaweed Extract

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Seaweed extract refers to using large algae growing in the ocean as raw materials, through chemical, physical or biological methods, to extract the natural nutrients needed for crop growth and development in the seaweed, including a variety of natural plant growth regulators ( Auxins, cytokinins, gibberellins, alginic acid, seaweed polyphenols, protein amino acids, nucleotides, plant anti-stress substances, etc.) are made into fertilizers and used on crops to promote crop growth and increase yields. Improve the quality of agricultural products.

There are three main categories of production methods: physical methods, chemical methods, and biological enzymatic hydrolysis methods. The extraction method has a great impact on the active substance and nutrient content of the product. Even if the nutrient content is the same, the active substance content may be very different.

  1. The physical method, also known as the mechanical crushing method, uses physical means such as high-pressure grinding and crushing. In order to reduce the loss of active ingredients, the entire process tries to avoid high temperatures and chemicals. However, the physical method is less effective and once the algae are broken, the algae are not completely broken. , resulting in the nutrients not being fully extracted.
  2. Chemical methods mainly include organic solvent and alkaline extraction. In the organic solvent method, factors such as the crushing of raw materials, solvent dosage, temperature, time, etc. will affect the extraction efficiency during the entire process. The alkaline hydrolysis extraction method is simple and easy to operate, but it causes high damage to nutrients and incomplete retention of nutrients.
  3. Biological enzymatic hydrolysis mainly involves microbial fermentation and enzymatic hydrolysis. The process conditions are mild and will not affect the biological activity of natural substances. Its original activity is retained to the greatest extent.

Different processes of Green Seaweed Extract and Black Seaweed Extract:

  • Black seaweed extract is extracted using chemical methods. Potassium fulvate was used as the adsorption carrier. So the resulting product color is black.
  • Green seaweed extract is extracted by biological enzymatic hydrolysis without the need for adsorption carriers, so that seaweed extract with a pure green content of more than 40% can be extracted.

Different scope of application:

Green seaweed extract is a seaweed fertilizer developed for green vegetables and fruit trees in the fruit expansion period. The green seaweed extract has almost no color when dissolved in water, so it will not contaminate the fruits and leaves when sprayed. For example, when grapes are in the fruit expansion stage, spraying black seaweed extract will leave brown spots on the grapes, but there is no need to worry about this problem when using green seaweed extract.

Green Seaweed Extract
Green Seaweed Extract

Green seaweed extract is rich in natural growth hormones and amino acids. These substances can promote plant cell division and tissue growth, while improving the stress resistance and disease resistance of crops. In addition, green seaweed extract also contains polyphenols, which have good antioxidant properties and can protect plants from oxidative damage. Therefore, for plants that need to improve stress resistance and growth speed, such as vegetables, fruits, etc., the effect of using green seaweed essence will be better.

Black Seaweed Extract
Black Seaweed Extract

Black seaweed extract is rich in natural plant growth regulators and activated carbon and other substances, which has a good effect on improving the soil environment and promoting root growth. At the same time, black seaweed extract also contains a variety of natural antibacterial substances, which can help plants resist pathogenic bacteria. Therefore, for plants that need to improve the soil environment and improve disease resistance, such as flowers, seedlings, etc., the effect of using black seaweed extract will be better.

In summary, green seaweed extract and black seaweed extract are both high-quality natural plant growth regulators, but there are certain differences in efficacy and use objects. Choosing suitable seaweed extract products according to needs can improve the stress resistance of plants, promote growth and increase yields, and contribute to the development of green agriculture.

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