Plant Peptides

Diverse Plant Peptides for Every Research Need

From Beans to Nuts and Grains – Pure, Traceable, Ready for Lab Use

Plant peptides are small-molecule peptides derived from plant proteins through enzymatic hydrolysis or fermentation. In recent years, plant peptides have been extensively studied in nutraceuticals, functional foods, cosmetic active ingredients, and basic scientific research.

Alfa Chemistry offers a variety of high-purity plant peptides, including walnut peptides, soy peptides, rice peptides, and corn peptides. All peptides are tested by high-performance liquid chromatography (HPLC) to ensure reliable quality. Browse our catalog, purchase plant peptides online, and advance your research with trusted, versatile plant peptides.

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Characteristics of Plant Peptides

High Bioactivity

Plant peptides are typically small peptides consisting of 2–20 amino acids. Their low molecular weight makes them easily absorbed by in vitro systems or cells. They exhibit diverse biological functions, such as antioxidant, anti-inflammatory, antihypertensive, and immunomodulatory properties, facilitating research exploring diverse physiological effects.

Natural & Safe Source

Plant peptides are derived from grains (such as corn, wheat, and rice), legumes (soybeans, mung beans, and peas), nuts (walnuts and peanuts), and certain medicinal plants (such as bitter melon). Their natural plant origin, biodegradable structure, and renewable properties make them suitable for vegetarian/halal research models and reduce risk.

Excellent Solubility & Handling

Small peptides are generally readily soluble in water and buffers, enabling rapid preparation of experimental solutions. Their stable powder form facilitates storage, aliquoting, and laboratory use.

Versatile Applications

Plant peptides can be used in nutritional and functional food research, cosmetic active ingredient validation, animal nutrition research, and cell and molecular biology experiments. Specific peptides can be selected for specific research areas, supporting both in vitro and animal model studies.

Alfa Chemistry Plant Peptide Product Line

Below are the plant peptide products currently available for purchase online from Alfa Chemistry. All specifications are based on HPLC measurements and are accompanied by a certificate of analysis (COA). If you don't see the product you need or want, or if you require a different strength, concentration, or molecular weight range, we can custom-standardize your product.

Walnut Peptide

ALPE-PPt001

Corn Peptide

ALPE-PPt002

Bitter Melon Peptide

ALPE-PPt003

Mung Bean Peptide

ALPE-PPt004

Soybean Peptide

ALPE-PPt005

Pea Peptide

ALPE-PPt006

Peanut Peptide

ALPE-PPt007

Wheat Peptide

ALPE-PPt008

Rice Peptide

ALPE-PPt009

Spirulina Oligopeptide

ALPE-PPt010

Walnut Peptide

Specification: 85% Peptides

Inquiry

Corn Peptide

Specification: 75% Peptides

Inquiry

Bitter Melon Peptide

Specification: 60% Peptides

Inquiry

Mung Bean Peptide

Specification: 80% Peptides

Inquiry

Soybean Peptide

Specification: 80% Peptides

Inquiry

Pea Peptide

Specification: 70% Peptides

Inquiry

Peanut Peptide

Specification: 80% Peptides

Inquiry

Wheat Peptide

Specification: 75% Peptides

Inquiry

Rice Peptide

Specification: 80% Peptides

Inquiry

Spirulina Oligopeptide

Specification: Total protein ≥ 60%

Inquiry

*The "Peptides" values above are net peptide content indicators (confirmed by HPLC/analytical method). Actual net content is affected by the preparation method (enzyme type, degree of cleavage, ultrafiltration/fractionation purification).

*This product line is for research use only and is not intended for direct human or animal consumption, as a dietary supplement, or as a drug. Please confirm compliance with local regulations and intended use before ordering. Alfa Chemistry assumes no legal responsibility for non-research use.

Technology and Quality Control

Purity Determination

All products are primarily assayed for purity and content using HPLC, which is a common industry method for peptide analysis and purification, suitable for the separation and quantitative evaluation of complex hydrolysis products.

Other Routine Tests

Total protein/amino acid analysis, molecular weight distribution, residual solvent testing, microbial limits (upon request), and heavy metal testing (available upon request).

Traceable COA

Each batch is accompanied by a batch COA; mobile phase, chromatographic conditions, and methodology instructions are available upon request to facilitate replication in the customer's laboratory.

Key Application Scenarios for Plant Peptides

Nutrients and Functional Food R&D

Peptides with ACE inhibition or blood pressure lowering potential can be validated as functional ingredients in vitro and in animal models.

Antioxidant/Anti-Inflammatory Research

Plant peptides from various sources have demonstrated the ability to scavenge free radicals, inhibit lipid peroxidation, and regulate inflammatory factors, making them suitable for cell-based experiments and mechanistic studies.

Cosmetics and Dermatology

Rice peptides and enzyme-hydrolyzed peptides are often studied for moisturizing, promoting stratum corneum repair, and collagen synthesis, and are used as raw materials to verify skin permeability and efficacy testing.

Feed and Animal Nutrition Research

For example, soy peptides have been studied in numerous studies for improving growth performance and immune markers, and have been incorporated into animal experimental designs.

Storage and Handling Recommendations for Plant Peptides

Storage at low temperatures is recommended (freeze-dried powder at -20°C is more stable). After opening, aliquot and refrigerate/freeze within a short period of time to minimize moisture absorption and degradation.
Most plant peptides are soluble in water or buffer; solubility varies with the polarity and molecular weight of the peptide. Gentle sonication or gentle heating (≤37°C) can promote dissolution.
To ensure experimental reproducibility, it is recommended to use the solution immediately after preparation or aliquot and store frozen; avoid repeated freeze-thaw cycles.

Tailored Plant Peptides for Research: Customization & Technical Support

Alfa Chemistry offers flexible custom plant peptide services to meet diverse research needs. We can customize enzymatic hydrolysis methods using enzymes such as trypsin, pepsin, or food-grade proteases, and provide fractionation, desalting, and purification services to achieve varying purity levels, tailored to customer requirements. We also offer stability optimization services to ensure peptides maintain their biological activity during storage and experimental use.

For initial evaluation

we provide small batch samples or test kits to facilitate verification of solubility, biological activity, and experimental compatibility before placing a large order.

For large-volume orders

we can coordinate with GMP or quality system compliance upon request, ensuring consistent, traceable, and reproducible materials for advanced scientific research.

What Success Stories Can We Share?

Explore some of our successful collaborations and discover how our insights can drive your next breakthrough.

Case 1: Application of Walnut Peptide in Antioxidant and Functional Food Research

Client Background: A food science laboratory at a key domestic university, with a long history of research on plant-based active ingredients. The team aimed to investigate the in vitro free radical scavenging ability of walnut peptides and their potential antioxidant activity in functional foods. The experimental design involved DPPH free radical scavenging experiments, ABTS antioxidant assays, and lipid peroxidation inhibition tests.

Products Used: Walnut Peptide (85% Peptides, HPLC assay)

Customer Feedback:

"The walnut peptides provided by Alfa Chemistry exhibited consistent batches and excellent solubility, making our antioxidant data highly reproducible. Using these highly purified peptides, we successfully screened for the most active fragments, providing a scientific basis for the development of functional food ingredients. The technical team's expert advice on solubility and storage conditions also significantly improved experimental efficiency."

Case 2: Application of Soy Peptides in Cellular Immune Modulation Experiments

Client Background: The R&D department of a biopharmaceutical company focused on the regulatory effects of plant peptides on immune cells. The company explored the inhibitory effects of soy peptides on macrophage inflammatory factors (such as IL-6 and TNF-α). The experiments included cell viability assays, inflammatory factor expression analysis, and Western blot validation.

Product Used: Soybean Peptide (80% Peptides, HPLC assay)

Customer Feedback:

"The soy peptides we purchased were of stable quality and had clear COA data, facilitating precise quantification in cell-based experiments. The experiments demonstrated significant inhibitory effects on inflammatory factor expression, and the data were reliable and reproducible. The technical support team provided professional guidance on solution preparation and endotoxin control, helping us to successfully complete the entire experimental process."

Case 3: Application of Corn Peptides in In Vitro Digestion Models and ACE Inhibition Studies

Client Background: A domestic functional food R&D team focused on blood pressure-modulating food ingredients. Their goal was to validate the ACE inhibitory activity of corn peptides in an in vitro simulated gastrointestinal digestion model. The experiments involved digestive enzyme treatment, activity determination, and molecular weight fractionation analysis.

Product Used: Corn Peptide (75% Peptides, HPLC Assay)

Customer Feedback:

"Corn peptides dissolve quickly and offer high batch-to-batch consistency, making them ideal for digestion simulation experiments. Through sequential experiments, we found that the peptides retained high ACE inhibitory activity after in vitro digestion, providing a reliable foundation for subsequent functional food formulation development. The purity and solubility data provided by Alfa Chemistry enabled more precise experimental design and reliable results."

Case 4: Application of Rice Peptides in Skin Repair and Cosmetic Activity Research

Client Background: The research department of a renowned domestic cosmetics company specializes in the development of natural active ingredients. The team sought to evaluate the potential of rice peptides for skin stratum corneum repair and collagen synthesis. Experiments included in vitro skin models, cell migration assays, and collagen quantification.

Product Used: Rice Peptide (80% Peptides, HPLC Assay)

Customer Feedback:

"The rice peptide powder provided by Alfa Chemistry is highly pure and well-soluble, enabling smooth progress in our skin model experiments. The results demonstrate that rice peptide effectively promotes stratum corneum repair and increases collagen synthesis, providing experimental data support for new product development. The technical team's storage and usage advice ensures reproducible experiments, making our R&D process more efficient."

Buy High-Purity Plant Peptides Online

Walnut, Soybean, Rice & More – Research-Grade, HPLC Verified

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Frequently Asked Questions (FAQs)

What is the molecular weight distribution of plant peptides?

The molecular weights of peptides produced vary depending on the plant source and enzymatic hydrolysis method, typically ranging from 500–3000 Da. Alfa Chemistry offers customized services for molecular weight fractionation or enrichment in specific ranges.

Is the HPLC method standardized?

All plant peptides are analyzed for purity using reversed-phase high-performance liquid chromatography (RP-HPLC), and detailed method parameters are provided for customer replication.

Can samples or small packages be provided for method validation?

Yes. We typically provide small samples for customer validation of methods and efficacy. Please contact sales for sample policies.

A COA and SDS are available?

A COA is provided with each batch, and an SDS is available upon request to facilitate shipping and safety assessments.

Can plant peptides be used in cell culture experiments?

They can be used in a variety of in vitro assays, but suitability for cell culture depends on the peptide's purity, endotoxin levels, and culture system. (It is recommended to inquire about endotoxin-free treatment or additional testing.)

Can amino acid composition analysis be provided?

We can provide complete amino acid profiles upon request to help researchers understand peptide composition and functional relationships.

Can these plant peptides be used for protein interaction studies?

Yes. Low molecular weight peptides are readily suitable for in vitro binding experiments, enzyme kinetics studies, or signaling pathway analysis.

Do the plant peptides contain residual enzymes or other impurities?

The standard product undergoes enzyme and salt removal treatments to achieve HPLC purity specifications. High-purity enzyme removal treatments are available upon request.

Can functional validation data (e.g., antioxidant, ACE inhibition) be provided?

We can provide a summary of some R&D/literature-supported data, but functional validation requires replication in the customer's own model/conditions. We also offer customized testing services.

How to place an order and pay?

Submit an inquiry directly through the Alfa Chemistry official website or contact sales. We will provide a quote, minimum order quantity (MOQ), sample options, and payment methods.

*If you have further questions, please contact our support team.

Plant Peptides

Characteristics of Plant Peptides

Alfa Chemistry Plant Peptide Product Line

Walnut Peptide

Corn Peptide

Bitter Melon Peptide

Mung Bean Peptide

Soybean Peptide

Pea Peptide

Peanut Peptide

Wheat Peptide

Rice Peptide

Spirulina Oligopeptide

Technology and Quality Control

Purity Determination

Other Routine Tests

Traceable COA

Key Application Scenarios for Plant Peptides

Nutrients and Functional Food R&D

Antioxidant/Anti-Inflammatory Research

Cosmetics and Dermatology

Feed and Animal Nutrition Research

Storage and Handling Recommendations for Plant Peptides

Tailored Plant Peptides for Research: Customization & Technical Support

What Success Stories Can We Share?

Case 1: Application of Walnut Peptide in Antioxidant and Functional Food Research

Case 2: Application of Soy Peptides in Cellular Immune Modulation Experiments

Case 3: Application of Corn Peptides in In Vitro Digestion Models and ACE Inhibition Studies

Case 4: Application of Rice Peptides in Skin Repair and Cosmetic Activity Research

Buy High-Purity Plant Peptides Online

Frequently Asked Questions (FAQs)

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