Alginate oligosaccharides (AOS)

Feature:

Low molecular weight oligosaccharides.

Alginate oligosaccharides (AOS) are low molecular weight oligosaccharides obtained through glycosidic bond hydrolysis or 

biological/organic synthesis. AOS are functional oligosaccharides obtained through specific cleavage reactions of linear 

long-chain molecules irregularly linked by 1,4-mannuronic acid and 1,4-guluronic acid. It is a pale yellowish-brown powder, 

soluble in water, and highly stable. AOS not only has a low molecular weight and low viscosity, making it easily absorbed, 

but also exhibits strong biological activities, including immunomodulatory, prebiotic, anti-inflammatory, anti-apoptotic, 

antioxidant, and even anti-tumor effects. These properties make AOS a promising candidate for applications in medicine, 

health products, and other fields. Furthermore, AOS can enhance plant resistance to adverse conditions. For example, crops 

treated with AOS show stronger adaptability and maintain higher survival rates and growth rates under adverse environmental 

conditions such as drought, cold, and high temperatures. Fucoidan is a plant nutrient regulator made from brown algae. It has 

multiple functions, including promoting plant growth, enhancing stress resistance, promoting nutrient absorption, increasing 

yield, and improving quality. It has broad application prospects in agriculture and can be applied through fertigation or foliar 

spraying. The optimal time for application is during critical growth stages of crops or before adverse conditions occur. Excessive 

use may temporarily slow crop growth, but will not cause irreversible damage.

Function:

(1)Significantly promotes growth: Breaks seed dormancy, promotes root and stem growth, and strengthens leaves and stems, 

laying a good foundation for crop growth.

(2)Regulates physiology: Balances hormones, enhances photosynthetic efficiency, and precisely controls plant growth rhythm.

(3)Strong resistance to adverse conditions: Resistant to drought, frost, and disease, helping plants cope with harsh environments 

and reducing damage.

(4)Environmentally friendly and easily absorbed: Derived from brown algae, naturally non-toxic; small molecules ensure high 

absorption and utilization rates.

Usage and dosage: 

(1)Foliar spray: Dilute 800-1500 times, spray in the early morning, evening, or on cloudy days. 

For vegetables:use 800-1000 times dilution every 7-10 days in the early stage, and 1000-1500 times dilution every 10-15 days 

in the middle and late stages. 

For fruit trees:use 1000-1200 times dilution during budding and flowering, and 1200-1500 times dilution during fruit setting 

and enlargement, with an interval of 10-15 days per acre, 2-3 times. For flowers, use 100-150 grams per cubic meter, once a 

month. For young fruit trees, use 10-15 grams

For mature trees:use 20-30 grams, 2-3 times during the growing season. 

(2)Drip irrigation fertilization: Prepare a 0.1%-0.3% solution, add 1-3 kg per cubic meter of water, and apply according to soil 

moisture and water requirements, once every 7-10 days for vegetables and once every 10-15 days for fruit trees. 

(3)Seed soaking treatment: Prepare a 0.05%-0.1% solution, soak grains for 6-12 hours and vegetables for 3-6 hours, then drain, 

dry, and sow.

(4)Root application: Apply via irrigation. For vegetables, use 200-300 grams