Moisture-Proof Food Oxygen Absorber
Product Category: Oxygen Absorber
Key Attributes:
- Type: Moisture-Proof
- Feature: Oxygen Absorption + Moisture & Mold Prevention
- Models: 10#, 20#, 30#, 40#, 50#, 100#, 150#, 200#, 250#, 300#, 500#, 1000#, 1500#
- Sealing: Three-side sealed, Back sealed
- Form: Single piece / Continuous (chain-type / roll-type)
- Printing: Bilingual version (Chinese & English)
Product Quotation:
$: Free samples available, detailed pricing upon consultation
Our Brands
Chunwang (for domestic sales), Ohunter (for international sales)
Main Ingredients
Reduced iron powder, activated carbon, diatomaceous earth, sodium chloride, water.
Nominal Oxygen Absorption Capacity
3 times / >6 times
Reaction Principle
Fe+H2O+O2→Fe(OH)3 | 2Fe(OH)3=Fe2O3 + 3H2O Fe2O3
Optimal Activation Temperature
-5°C to 40°C
Product Packaging Materials
Triple-shield film, triple-shield high-transparency film (Waterproof, Oil-Resistant & Dust-Proof)
The Food Oxygen Absorber, often referred to as a food-grade oxygen scavenger or deoxidizer, is an advanced preservation technology originating from Japan (where it is also known as a “deoxidant”). It is crucial to emphasize that it is not a food additive. Its working principle involves a chemical reaction with the oxygen inside food packaging, consuming the oxygen to create a low-oxygen physical environment.
How It Works: Preserving Freshness at the Source
The core function of the Food Oxygen Absorber is to proactively and precisely remove oxygen from the food packaging environment. Within a specified time, it reduces the residual oxygen concentration inside the packaging to below 0.1% and maintains this near “oxygen-free” state long-term. This reaction process is stable, produces no harmful gases, is safe without side effects, and has thus become an indispensable preservation solution in the food industry.
Product Portfolio: Comprehensive Food Oxygen Absorption Solutions
Leveraging advanced technology, we provide a full range of specialized—not just a single universal type—oxygen absorber products to meet the specific needs of different foods:
- All-Purpose: The Ferrous Universal Food Oxygen Absorber meets the oxygen absorption and preservation requirements for most foods.
- Specialized Types: For different categories such as roasted snacks, betel nuts, pastries, meats, and medicinal herbs, we offer specialized models including the Oxygen Absorber for Roasted Snacks, Moisture-Proof Food Oxygen Absorber, Odor-Removing Food Oxygen Absorber, and Antimicrobial Food Oxygen Absorber.
- Advanced Solutions: For products with special packaging requirements, we provide advanced solutions like the Pressure-Stabilizing Food Oxygen Absorber (prevents package collapse) and the Dual-Absorption Food Oxygen Absorber (absorbs both oxygen and carbon dioxide).
Product Value: All-Round Protection
The Food Oxygen Absorber not only effectively removes oxygen but also provides multiple protective benefits:
- Inhibits Microorganisms: Suppresses the growth and reproduction of mold and aerobic bacteria at the source, preventing food from molding and spoiling.
- Prevents Pest Infestation: Effectively prevents grains, dried fruits, and similar products from developing insects.
- Preserves Color, Aroma, and Taste: Prevents fat rancidity (development of off-flavors) and avoids oxidative discoloration of food (e.g., darkening of nuts, fading of meat), locking in the appealing original color and crisp texture.
- Retains Nutrients: Effectively protects vitamins and natural nutritional components in food from oxidative damage.
Advantages of Using the Food Oxygen Absorber for Preservation
Common preservation methods each have their obvious shortcomings, while the oxygen absorber integrates all the advantages:
❌ Refrigeration: High transportation and storage costs, strong reliance on the supply chain.
❌ Nitrogen Flushing: Leaves 3%-5% residual oxygen in the package, insufficient for perfect preservation; requires significant upfront equipment investment, and the effect is incomplete.
❌ Vacuum Packaging: Requires very high packaging material strength, prone to leakage due to temperature changes or punctures; cannot continuously absorb trace oxygen that infiltrates later.
Only the Food Oxygen Absorber combines convenience, low cost, safety, complete oxygen removal, maintenance of the food’s original color, aroma, and taste, and long-term preservation.
The Moisture-Proof Food Oxygen Absorber is primarily used in industries such as areca nuts and goji berries, which require both drying and deoxygenation for preservation. The brine in areca nuts is a mixture of maltose and quicklime, normally in solid state. However, maltose is a reducing disaccharide and, like quicklime, readily absorbs moisture from the environment, liquefying into a fluid that contaminates the areca nuts. Goji berries are foods with high inherent moisture content and are highly prone to mold if humidity within the package cannot be controlled. Therefore, preserving such foods requires not only reducing the oxygen concentration inside the package to below 0.1% to prevent oxidative spoilage but also absorbing moisture within the package. With increasingly strict regulations on preservatives, the Moisture-Proof Food Oxygen Absorber is the optimal choice for preserving these types of foods.
I. Product Definition
An oxygen absorber for food packaging that simultaneously absorbs water vapor and oxygen inside the package to achieve dry preservation.
II. Core Features & Benefits
- Absorbs oxygen inside the package, preventing food oxidation and spoilage, and effectively inhibiting the growth and reproduction of aerobic bacteria.
- Absorbs moisture from within the package and evaporated from the food itself, controlling internal humidity and preventing food mold.
- Inhibits moisture exudation (brine leakage) in areca nuts, preventing the brine from liquefying and contaminating the areca nuts.
III. Main Applications
This product is mainly suitable for foods with high inherent moisture content or those with high initial packaging humidity, for example: Areca nuts: Prevents brine leakage and mold. Goji berries: Prevents moisture absorption, caking, and mold. Wet rice noodles, rice cakes, and other moist staple foods. Other foods where the initial packaging humidity may reach around 90%.
Food Oxygen Absorber Dosage Calculator (Click to Access)
This calculator is designed in accordance with GB/T 41896-2022 – National Standard for Food Oxygen Absorbers.
Oxygen Absorber for Roasted Snacks
Features:
- Fast-acting deoxygenation, typically causing packaging to collapse within 30 minutes to 2 hours, creating a vacuum-like state that shortens production line transfer times.
- High oxygen absorption capacity of 140-160 ml of oxygen per gram of absorber.
- Suitable for low water activity foods, ensuring reliable oxygen absorption even in dry environments.
Applications:
Sunflower seeds, peanuts, walnuts, pine nuts, pumpkin seeds, macadamia nuts, and similar roasted snacks.
Important Note:
This product heats up rapidly after opening the package. It must be used within 30 minutes of exposure to air.
Moisture-Proof Food Oxygen Absorber
Features:
- Dual functionality of humidity control and oxygen removal, effectively reducing water activity in high-moisture foods to prevent mold formation.
- Oxygen absorption capacity exceeding 120 ml per gram of absorber.
- Moisture absorption rate ≥30% under 90% RH conditions.
Applications:
Food products with relatively high moisture content, such as: betel nuts.
Important Note:
As a moisture-dependent oxygen absorber, its chemical reaction requires moisture from both the food and packaging environment. It is not suitable for dry foods or dry packaging conditions.
Pressure-Stabilizing Food Oxygen Absorber
Features:
- Releases an equivalent amount of carbon dioxide while absorbing oxygen, preventing food packaging from collapsing.
- Non-ferrous composition, free from metal components, allowing it to pass through metal detectors.
- Safe, environmentally friendly, biodegradable, microwave-safe (unlike iron-based absorbers), and leaves no rust stains.
Applications:
Canned foods, nitrogen-flushed baked goods, sealed museum display cases, etc.
Important Note:
Not suitable for vacuum-packed foods; should not be used with foods that react with carbon dioxide; not recommended for alkaline foods.
Dual-Absorption Food Oxygen Absorber
Features:
- Simultaneously absorbs both oxygen and carbon dioxide, effectively preventing packaging inflation.
- Offers certain moisture absorption capability.
- Provides gentle oxygen removal with relatively mild heat generation and minimal temperature fluctuation during the process.
Applications:
Red dates, coffee beans, and other food products prone to carbon dioxide generation during storage.
Important Note:
As a slow-release oxygen absorber, it is not suitable for food packaging that requires rapid deoxygenation.
Odor-Removing Food Oxygen Absorber
Features:
- Capable of absorbing sulfur compounds and ammonia-based substances.
- Absorbs certain volatile organic compounds to achieve an odor-removing effect.
Applications:
Food and pharmaceutical products that require both oxygen removal and odor elimination.
Important Note:
Its primary function remains oxygen absorption, with odor removal as a supplementary feature. It is suitable for foods that generate small amounts of odor molecules and should not be compared in effectiveness to professional deodorants.
Antimicrobial Food Oxygen Absorber
Features:
- Effective in eliminating Escherichia coli in food products.
- Effective in eliminating Shigella in food products.
- Capable of eliminating other pathogenic microorganisms, achieving a sterilization rate of up to 99.9%.
- Oxygen absorption capacity exceeding 120 ml per gram of absorber.
Applications:
Food products requiring stringent control over total microbial count.
Important Note:
As a slow-release oxygen absorber, it is not suitable for food packaging that requires rapid deoxygenation.
Triple-Shield & Oxygen-Indicating Food Oxygen Absorber:
The specialized types for roasted snacks, moisture-proof, pressure-stabilizing, dual-absorption, odor-removing, and antimicrobial represent functional classifications of our oxygen absorbers. In addition to these, our product line also includes the Triple-Shield Food Oxygen Absorber, manufactured with packaging material that is waterproof, oil-proof, and dust-proof, and the Oxygen-Indicating Food Oxygen Absorber, which features a color-changing indicator line. We offer a comprehensive range of Food Oxygen Absorbers. Please contact our customer service for specific product inquiries and selection assistance.
Food Oxygen Absorber Overview:
Our company offers advanced Food Oxygen Absorbers in a comprehensive range of types, including High-Efficiency Universal, Roasted Snack Specific, Moisture-Proof, Pressure-Stabilizing, Dual-Absorption, Odor-Removing, and Antimicrobial variants. These products effectively eliminate residual oxygen within packaging and maintain an oxygen-free environment for extended periods.They provide multiple protective functions: inhibiting the growth of mold, aerobic bacteria, and grain pests; preventing product mold, spoilage, and insect infestation; avoiding oxidative discoloration of food; preventing lipid oxidation that affects taste; and protecting against the loss of nutrients such as vitamins.
High-Efficiency Ferrous Universal Oxygen Absorber
Yellow Oxygen Absorber – Eye-mark Cut
White Oxygen Absorber – Eye-mark Cut
OHUNTER Export-Series Oxygen Absorber
OHUNTER Export-Series Oil-Resistant Oxygen Absorber
Non-Ferrous Pressure-Stabilizing Oxygen Absorber
Moisture-Proof Oxygen Absorber
Oxygen Absorber for Roasted Snacks
Dual-Absorption Oxygen Absorber
Odor-Removing Food Oxygen Absorber
Antimicrobial Food Oxygen Absorber
Oxygen-Indicating Food Oxygen Absorber
Triple-Shield Oxygen Absorber
Continuous Roll Yellow Oxygen Absorber – Eye-mark Cut
Continuous Roll High-Efficiency Universal Oxygen Absorber
Continuous Roll Triple-Shield Oxygen Absorber
Continuous Roll Oxygen Absorber for Roasted Snacks
Related Link: Product Test Reports>>
Related Link: Production Environment>>
Important Notes:
- Ferrous oxygen absorbers are not microwave-safe, while organic-based absorbers are.
- Oxygen absorbers cannot address spoilage caused by anaerobic bacteria in food products.
- Foods with high oil content or significant moisture require packaging with triple-barrier film (waterproof, oil-proof, dust-proof).
- No oxygen absorber should be immersed directly in food liquids or sauces.
- Pressure-stabilizing oxygen absorbers are unsuitable for alkaline foods or those that react with carbon dioxide.
- All moisture-proof oxygen absorbers uniformly utilize triple-barrier high-transparency film.
- Moisture-proof oxygen absorbers are not recommended for dry food applications.
- Food packaging should employ composite materials with an oxygen transmission rate below 20 ml/m²·24h·25°C, such as KOP/CPP, NY/PE, KNY/PE, KPET/PE, PET/AL/PE. Avoid high oxygen transmission materials like OPP/CPP, PP, or PE film bags.
- After opening the oxygen absorber package, ideally use within 1-2 hours and promptly seal the preserved product. Any unused absorbers should be resealed immediately after removing air from their original packaging to prevent degradation.
- Certain fast-acting oxygen absorber types must be used within 30 minutes after opening the package.
- The optimal operating temperature for food oxygen absorbers generally ranges from -5°C to 40°C; effectiveness decreases below -5°C.
- During operation, food oxygen absorbers generate minimal heat, which is a normal and safe characteristic of the chemical reaction.
About Chunwang:
With 27 years of specialized experience, we are a leading manufacturer of moisture-proof and preservation products, specializing in desiccants and Food Oxygen Absorbers. Our comprehensive product line covers all common specifications and packaging materials, with standard products ready for immediate dispatch—no waiting required. We also offer comprehensive customization options to meet your specific needs. Beyond manufacturing and sales, we provide scientific moisture-proof and preservation solutions to ensure the quality and longevity of your products.
Learn More About Chunwang Group >>
Chunwang Advantages:
- Established in 1998, with over 20 years of expertise in R&D and production of desiccants and oxygen absorbers.
- Stock Code: 831880; Stock Abbreviation: Chunwang New Materials.
- Three production bases in Shenzhen, Dongguan, and Anhui, totaling 60,000 m².
- Drafting Unit for the Chinese industry standard BB∕T 0049-2021 (Desiccants for Packaging).
- Drafting Unit for GB/T 41896-2022 (Oxygen Absorbers for Food) and GB/T 41897-2022 (Desiccants for Food).
- Certifications: ISO, BSCI, GMP, High-Tech Enterprise, Specialized & Innovative SME.
- Compliance: RoHS, REACH, TSCA; completed FDA DMF filing.
- National Pharmaceutical Packaging Material Registration No.: B20190000354.
Our company possesses distinct technological advantages and professional expertise in the industry. We offer innovative products, backed by deep expertise in technology R&D, stringent quality control, and practical market applications. Committed to providing efficient, safe, and environmentally friendly moisture-proof and preservation products, we also deliver tailored solutions to address your specific challenges.
View Chunwang VR [Click to View]
Our Experience:
With extensive expertise in moisture-proof and preservation solutions, we have served diverse industries for over two decades. Throughout our 20+ years of operation, we have consistently provided moisture-proof and preservation products and solutions to numerous renowned domestic and international enterprises. We are committed to leveraging this accumulated professional experience to directly empower your products and production lines—helping you significantly reduce cargo damage, ensure product quality, enhance brand reputation, and earn market trust. Below are some of the notable clients we have collaborated with, both past and present.
Our team is here for you (7X24):
We value every single relationship. Big or small, your business is important to us. You can count on our heartfelt enthusiasm and full support whenever you reach out.
Ms. Liu
Gold Medal Sales Rep
Ms. Zhou
Gold Medal Sales Rep
Ms. Zeng
Gold Medal Customer Service
Ms. Lan
Gold Medal Customer Service