Product Overview

As a leading Vitamin C producer and factory in China, we also serve as a reliable distributor of high-purity L-Ascorbic Acid. At Henan Liyin Biotech, we supply high-quality Vitamin C.Vitamin C (L-Ascorbic Acid) is one of the most versatile food additives, valued for its dual role as a nutrient and a functional antioxidant. Its reducing properties make it indispensable in various food processing applications.

• Meat Processing: Used as a curing agent to inhibit the formation of carcinogenic nitrosamines in processed meats (e.g., bacon, sausages). Typical usage levels range from 450–550 ppm (mg/kg) in cured meat products. It also helps stabilize the characteristic pink color of cured meats by reducing nitrite to nitric oxide.
• Juice & Beverage Preservation: Acts as an oxygen scavenger to prevent oxidation, color degradation, and nutrient loss in fruit juices, soft drinks, and wine. Typical addition levels range from 200–500 ppm in juices, depending on the product's pH and packaging.
• Bakery & Flour Improver: Used as a dough conditioner to strengthen gluten and improve bread volume and texture. It acts as an oxidizing agent, promoting disulfide bond formation in gluten proteins. Typical usage in flour is 50–200 ppm (as an improver).

Why Choose Our Vitamin C?

Choosing the right Vitamin C supplier is about more than just purity — it's about consistency, transparency, and technical support. Here's why Henan Liyin Biotech is the right partner for your business:

• Verified Quality, Batch After Batch: Our Vitamin C is manufactured under strict GMP guidelines, with each batch tested for assay, heavy metals, and microbiological purity. We don't just meet standards — we consistently exceed them (typical assay >99.5%).
• Flexibility Across Industries: Whether you're formulating a dietary supplement, fortifying a beverage, or producing animal feed, we offer the right grade (Food Grade, Feed Grade) and packaging (from 1kg samples to 25kg bulk drums) to match your operations.
• Full Transparency: We provide complete documentation with every shipment, including Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), and Allergen Statement. No surprises, no delays.
• Trusted Vitamin C Producer & Distributor in China: As a GMP-certified factory, we offer direct supply, competitive pricing, and reliable global distribution from our China base.

Technical Support 

You Can Rely On: Our team is here to assist with application guidance — whether it's optimizing addition levels in meat processing, ensuring stability in your supplement blend, or advising on feed formulation.

Stable Supply Chain: With reliable production capacity and efficient logistics, we ensure your Vitamin C arrives on time, every time.

We're not just a supplier. We're your partner in quality.

Vitamin C (L-Ascorbic Acid) is a water-soluble vitamin and a potent antioxidant. It plays a crucial role in collagen synthesis, immune function, and acts as a reducing agent to neutralize free radicals, thereby protecting cells from oxidative damage. 

In food systems, it functions as an oxygen scavenger, preserving color and flavor.

Dietary Supplements

Vitamin C is a cornerstone ingredient in immune support and overall health formulations. Its role in collagen synthesis, antioxidant defense, and immune cell function makes it a non-negotiable component of high-quality multivitamins.

Synergistic Formulations: Frequently combined with zinc (to enhance immune response) and vitamin D (for overall immune and bone health). These combinations are particularly popular in seasonal wellness and immune support products.

Typical Dosages: In dietary supplements, common dosages range from 60 mg to 1000 mg per serving, depending on the target population and product positioning (e.g., general wellness vs. high-potency immune support).

Formulation Advantage: Our Vitamin C exhibits excellent stability in dry, solid dosage forms (tablets, capsules, powders) and is compatible with most minerals and B-vitamins commonly used in multi-nutrient blends.

Animal Feed

In animal nutrition, Vitamin C is an essential additive that supports growth, stress resistance, and overall health — particularly in species that cannot synthesize it endogenously (e.g., fish, shrimp, guinea pigs) or have limited synthesis capacity (e.g., poultry under stress).

Aquaculture: Widely used in fish and shrimp feeds to promote growth, improve feed conversion, and enhance stress resistance. Recommended inclusion rates typically range from 100–500 mg/kg of complete feed, depending on species, water temperature, and production intensity.

Poultry & Swine: Added to premixes to support immune function, particularly during periods of heat stress, vaccination, or disease challenge. Typical supplementation levels range from 50–200 mg/kg in poultry and swine diets.

Formulation Advantage: Our Feed Grade Vitamin C is formulated for stability in pelleted and extruded feeds, with options for coated or protected forms to minimize degradation during processing and storage.