Water Solubility Chitosan Agriculture Products Strawberry Preserve

Water Solubility Chitosan Agriculture Products Strawberry Preserve Agricultural Chitosan

General Information of Agricultural Chitosan

Chitosan oligosaccharide (Chitosan Oligosaccharide) is composed of 2-10 glucosamine linked by β-1,4-glycosidic bonds, which has a different regulatory effect on plants than traditional biological pesticides and chemical pesticides, which can not only improve the stress resistance of plants (including disease resistance, cold resistance and drought resistance, etc.), but also promote the growth of crops and improve the quality of crops.

Chitosan Oligosaccharide Molecule Weight Range 90% lower than 1000DA.

Benefits of Agricultural Chitosan

Agricultural usage and dosage of chitosan oligosaccharide

1. Improve the soil: Applying it to the land can promote the growth of organic organisms in the soil, increase the fertility of the soil, make it fertile, and improve the soil structure.

2. Improve crop disease resistance: Oligochitosan can inhibit the replication of viruses in plants, improve the plant's response to infection, and use it before the virus occurs to prevent the virus
After the occurrence of disease attack, it can inhibit the spread of disease attack to dry new plants, and it can also be mixed with targeted fungicides to achieve both internal and external considerations and achieve the goal of reducing pesticides and increasing efficiency.
Effect.

3. Improve crop stress resistance: Oligochitosan can induce plants to improve cold resistance and heat resistance. It can be used 1-7 days before planting, and the effect is more significant.

4. Improve plant root system and stimulate crop rooting: You can use chitosan oligosaccharides to dilute to 300-500 times, and then mix with pepper, rice and potato seeds for seed dressing.
To stimulate crops to germinate as soon as possible and the roots have many and long hairs.

5. Increase crop yield and improve crop quality: under the condition that crops are not sufficiently illuminated due to environmental and seasonal reasons, 150 room liters can be used to spray an acre of land
Spraying in large quantities can promote plant growth, increase photosynthetic efficiency, and improve crop quality at the same time.

6. Degradation of pesticide residues, safe and efficient: it can be mixed with fungicides, which can reduce the amount of chemical pesticides used, and can also degrade chemical pesticides in plants when used on plants.
It can prevent and control crop diseases and improve crop yield by eliminating pesticide residues.

7. Chitosan oligosaccharides are used in seeds, seedlings, and flowering stages, and the effect is remarkable. It needs to be used for more than one day when frost damage and drought damage occur.

8. Excessive use of shell sugar will affect the growth of crops in the short term, but will not cause yield reduction and irreversible damage to crops

9. The effective time of shell-piercing sugar is 1-2 days, and it can last for more than 7-9 days after application.

Test: Effect on the content of reducing ascorbic acid in strawberries

The VC content in berries is abundant, but it is easily lost by gradual decomposition under the action of vitamin enzymes. Effect of chitosan oligosaccharide treatment on ascorbic acid content in strawberries. The experimental results showed that the content of reducing ascorbic acid in strawberry fruits gradually decreased during storage.

After harvesting, chitosan oligosaccharide treatment of strawberry fruits had a certain effect on slowing down the decrease of reducing ascorbic acid content of strawberry fruits during storage, among which the treatment effect of chitosan oligosaccharides with a mass fraction of 1.5% was the most significant, and by the 4th and 5th days of the end of storage, the content of reducing ascorbic acid in fruits with a mass fraction of 1.5% chitosan oligosaccharide treatment group was 17.6% and 25.2% higher than that in the control group.

Chitosan oligosaccharide treatment has obvious fresh-keeping effect on strawberries. This is mainly because chitosan oligosaccharides can form a protective film on the surface of strawberry fruit, this membrane allows oxygen to pass through, but carbon dioxide and water cannot pass through, so that the carbon dioxide produced by strawberry respiration accumulates in large quantities in the membrane, so that the concentration of carbon dioxide increases and the concentration of oxygen decreases relatively.

This environment with high carbon dioxide and low oxygen concentration can inhibit the respiration of strawberries, prevent the degradation of respiratory substrates such as soluble sugars, reduce the loss of VC in strawberries, inhibit the transpiration of strawberries, and reduce the decay caused by pathogenic bacteria. These have promoted the extension of the storage period of strawberries and achieved the purpose of preservation.

Different concentrations of chitosan oligosaccharides have different storage and preservation effects on strawberries, the concentration is too high, the film formation is thicker, the oxygen concentration in the fruit is too low, normal life activities cannot be maintained, and the preservation effect is reduced.

The results show that the treatment of strawberry fruits with an aqueous solution with a mass fraction of 1.5% chitosan oligosaccharide has the best preservation effect, which can effectively control the postharvest physiological activity of strawberries, significantly delay their aging, and maintain their good storage quality. The optimal mass fraction of the aqueous chitosan oligosaccharide solution for the treatment of strawberries is 1.5%.