Due to the remarkable properties of γ-PGA, it has been chosen as a suitable candidate for applications in various fields as medicine (bone regeneration, dental carries, wound dressing, drug delivery, vaccine development, bio-glue), agriculture (biofertilizer, super-absorbent), wastewater treatment (bio-flocculants, metal removal), cosmetics (anti-ageing,mouth wash, sunscreen lotion), food industries (flavouring agent, thickener, packaging material), etc.
Category: γ-PGA
γ-polyglutamic acid treatment on Ginger
By foliar spraying of “γ-polyglutamic acid” diluted 1:500 times and 1:300 times on ginger, the stem height, branch, leaf length, leaf width, stem and leaf fresh weight, fresh ginger stem tuber weight were measured respectively. comparative analysis, etc.
Foliar spraying of “γ-polyglutamic acid” has different degrees of promoting effect on the growth and development of ginger.
The 1:500 and 1:300 times dilution spraying of γ-polyglutamic acid， fresh ginger stem tubers in the experimental area reached 87 450 kg/hm2 and 97 318 kg/hm2, respectively, an increase of 13.36% and 26.15% compared with the control, both of which were significantly or extremely high，significant level.
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Treatment of potato with γ-PGA
Using potassium sulfate (potassium oxide ≥ 40%) 35 kg + diammonium phosphate (15-25-0) 10 kg as the basic formula, with different amounts of added r-polyglutamic acid microbial inoculum as a treatment combination, in other management In the case of consistent measures, the growth of above-ground stems and vines and the composition of underground tuber yields were investigated.
A comparative analysis of the survey data shows that the treatment with the addition of r-polyglutamic acid microbial inoculants can effectively regulate the growth of above-ground stem vines and underground potato pieces, and with the increase in the amount of microbial inoculants used, the adjustment effect is more obvious and effective. Control the growth of stems and vines on the ground, promote branching, and increase the area coefficient of large leaves, thereby promoting the expansion and growth of underground potato pieces and improving economic benefits.
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Roots
Roots serve a vital role (among other functions) in extracting water from the soil, transporting it to the shoot and sustaining transpiration. To fulfill this function, roots have a complex anatomical structure consisting of different cell layers with varying hydraulic conductivities. This composite structure offers different pathways for radial flow of water from the root surface towards xylem vessels: (i) the apoplastic pathway through the intercellular space and the cell wall; (ii) the symplastic pathway via plasmodesmata channels extending across neighboring cells; and (iii) the transcellular pathway which involves crossing membranes of neighboring cells. Pathways (ii and iii) are commonly referred to as the cell-to-cell pathway.
Roots are capable of varying the permeability of their cells and tissues to fulfill multi-facet functions, such as (i) transport of water and nutrients towards the xylem vessels; (ii) protection against desiccation in drying soils; and (iii) avoidance of leakage of nutrients and photosynthesized compounds into the soil.
Products helps plants get better and stronger roots:
γ-PGA can promote rooting, and improve crop resistance
γ-PGA itself has a natural growth-promoting effect on plant roots, stimulating the growth of root hairs and new roots, enhancing the ability of absorbing nutrients, and decreasing damage to plant roots caused by drought, sputum, cold and other stresses.
γ-PGA can Chelate toxic metal ions in soil
γ-PGA is able to chelate toxic metal ions in soil such as lead, copper, cadmium, chromium, aluminum, and arsenic, preventing the roots of the crop from absorbing these toxins. Therefore, it blocks the introduction of toxic metals into the human food chain.
Enrichment of nutrients, and improving the effectiveness of fertilizers by γ-PGA
The anion surfactant character of γ-PGA gives it strong binding affinity for cation nutrient molecules. The absorption of nutrient molecules by γ-PGA is 100 fold as strong as soil alone, which thus decreases the loss of nutrients from the soil.
It can enrich nitrogen, phosphorous, and potassium as well as calcium, magnesium, manganese and zinc in soil, thereby satisfying the different requirements of individual crops. After application of γ-PGA , the effectiveness of nitrogen fertilizer can be increased by 50-60%, phosphorous more than 5%, and potassium 15-20%. It saves about 20% in fertilizer requirement per acre and is able to provide sufficient nutrients for crops.
Long-lasting releasing effect of γ-PGA
The absorption and maintenance properties of γ-PGA allow it to store excess nutrients in the soil until they are needed.
The stored nutrients can be released gradually over time to satisfy the needs of crops during their growth.
γ-PGA can improve the chemical composition of the soil
The high absorbance of γ-PGA increases the availability of organics in the soil, balances the pH value of the soil thus preventing soil acidity caused by long-term use of chemical fertilizers as well as absorption and fungal problems. By using γ-PGA , the organic content of the soil is improved. Enhancement of the organic components in soil greatly improves the water and nutrient maintenance of the soil, which benefits crop yields.
Functions of γ-PGA in agriculture
- Improvement of the chemical composition of the soil
- Long-lasting releasing effect
- Enrichment of nutrients, and improving the effectiveness of fertilizers
- Chelating of toxic metal ions
- Promote rooting, and improve crop resistance
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