Understanding Amino Acid, Peptide, and Fish Protein Fertilizers: What Makes Them Different — and Why They Matter

In recent years, the agricultural market has seen a surge of innovative fertilizers labeled as amino acid, peptide, or fish protein products. Many growers are asking: What are they really? What are their functions? And how do we distinguish among them?

The truth is — these three types all belong to the same broader family: amino acid-based water-soluble fertilizers. They share a common biochemical “genetic code.”

Proteins and peptides are both built from amino acids — the essential building blocks of life. When several amino acids link together, they form a peptide chain; when one or more peptide chains fold and bond into complex structures, they become proteins.

Plants rely on a variety of amino acids to regulate growth, enzyme activity, and stress resistance. Therefore, the type and diversity of amino acids in a fertilizer are critical factors determining its performance.

From Land to Sea: The Rise of Fish Protein Fertilizers

As the demand for amino acid fertilizers increases, land-based raw materials have become limited. Manufacturers have turned their attention to the ocean, developing fish protein water-soluble fertilizers derived from low-value marine fish.

Through enzymatic hydrolysis, these fish-based materials are transformed into nutrient-rich fertilizers that provide plants with multiple functional ingredients:

• Free Amino Acids: Containing more than 18 essential amino acids for plants, including proline and glycine, which help enhance stress resistance.

• Small Peptides: With molecular weights below 1000 Da, these are rapidly absorbed by crops without the need for conversion.

• Trace Elements: Naturally rich in calcium, magnesium, zinc, and other micronutrients that enhance nutrient uptake efficiency.

• Bioactive Substances: Such as unsaturated fatty acids and vitamins, which stabilize plant cell membranes and promote overall vitality.

Compared with conventional amino acid fertilizers, fish protein fertilizers feature more complex molecular structures and a broader spectrum of biological functions. The multi-peptide chains stimulate plants to produce growth-promoting hormones, while marine bioactive compounds improve cold tolerance and disease resistance.

Moreover, low-temperature enzymatic hydrolysis technology preserves these active substances, avoiding the degradation that occurs under high-heat processing.

The Power of Marine Biotechnology — JINMAI Biotech Fish Protein

JINMAI Biotech Marine Fish Protein represents a new generation of biostimulant fertilizers. Using deep-sea fish as raw material, it is produced through advanced biological enzymolysis and physical extraction, effectively preserving proteins, peptides, and amino acids in their most active forms.

This product delivers systemic benefits to plants and soils through multiple synergistic mechanisms:

1. Biostimulant Activity: Active peptides in fish protein activate plant defense enzymes (such as SOD and POD), enhancing tolerance to drought, cold, and salinity.

2. Root Development: Amino acids promote auxin (IAA) synthesis, increasing root hair density and improving nutrient absorption — especially effective during seedling and stress stages.

3. Microbial Activation: Provides a carbon and nitrogen source for beneficial microbes (actinomycetes, nitrogen-fixing bacteria), suppressing pathogens and reducing continuous cropping issues.

4. Soil Improvement: High organic matter content improves soil aggregation, reduces salinization, and enhances water and fertilizer retention capacity.

Why Choose JINMAI Marine Fish Protein?

• 100% derived from deep-sea natural fish, not synthetic residues.

• Cold-enzymatic hydrolysis ensures bioactivity retention.

• Balanced amino acid–peptide–protein composition for quick absorption.

• Suitable for foliar spray, drip irrigation, and root application across all crops.

By integrating marine biotechnology with modern crop nutrition, JINMAI Fish Protein Fertilizer offers a powerful, eco-friendly solution for sustainable agriculture — helping plants grow stronger, healthier, and more resilient in all conditions.

Contact Us

• Website: www.jinmaifertilizer.com

• Alibaba Website: jinmaiplant.en.alibaba.com

• Email: info@sdjinmai.com

• Phone: +86-132-7636-3926