Food-grade omega-3 fatty acids experienced a surge in demand in 2026. This was due to natural factors, including climate change. Global warming and the El Niño phenomenon in regions rich in food-grade fish oil led to reduced fish catches, resulting in a decrease in fish oil at the raw material level and a price spike.
Omega-3 fatty acids are essential nutrients for the human body. They are polyunsaturated fatty acids that the body cannot synthesize on its own and must obtain from the diet . With the increasing awareness of health in modern society, people's demand for health-related, nutritious, and functional foods is growing daily. Sales of products such as fish oil supplements and creatine supplements are increasing year by year.
Polifar, as a supplier of medium-to-high purity food-grade fish oil, has a long-term supply of refined fish oil with a purity of over 75%, which is clear and safe. This fully meets the needs of buyers producing fish oil dietary supplements.
In this Polifar article, Marni was invited as a columnist to provide a comprehensive analysis of what food-grade omega-3 fatty acids are, their raw material sources, mainstream dosage forms, key quality indicators and applications , processing challenges and storage considerations . This will help fish oil buyers better select the omega-3 fatty acids that best suit their needs.
1. What Are Food-Grade Omega-3 Fatty Acids?
Food-grade omega-3 fatty acids differ from feed-grade and industrial-grade fatty acids, complying with relevant national regulations. All indicators require strict control and must be used within specified limits. They can be used as nutritional fortifiers to supplement deficiencies in the human body.
1.1 Differentiating by active ingredients:
ω-3 fatty acids mainly consist of three core components: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).
The core sources and functions of alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) are shown in the table below:
| Type | Full English Name | Main Source | Main Function |
| ALA | Alpha-Linolenic Acid | Vegetable oils, flaxseed, perilla seeds | Omega-3 essential fatty acids |
| EPA | Eicosapentaenoic Acid | Deep-sea fish oil, algae oil | Cardiovascular health support |
| DHA | Docosahexaenoic Acid | Deep-sea fish oil, microalgae | Brain and vision nutritional support |
ALA is an essential fatty acid derived from plants, but its conversion into EPA and DHA in the human body is only 5%-10% efficient. EPA is beneficial for cardiovascular health in middle-aged and elderly people, while DHA is commonly used for the neurovisual development of infants and young children.
1.2 Differentiation based on food-grade oil raw materials:
TG ( Triglyceride ) : Extracted from natural fish oil, stable and easily absorbed. It is more expensive, but well-tolerated. Generally used in infant formula and high-end fish oil products.
EE (Ethyl Ester ) : High-concentration fish oil is obtained through a series of chemical processes, such as transesterification . It has lower production costs and is generally used in regular fish oil soft capsules and functional foods .
rTG ( Re -esterified Triglyceride ) : This product converts the EE type back into the TG type, resulting in higher concentrations and greater bioavailability. It represents the mainstream trend for high-end supplements in the future.
PL ( phospholipid type ): Extracted from krill oil, EPA/DHA are bound to phospholipids, making it both hydrophilic and lipophilic with high bioavailability . It is commonly used in high-end nutritional supplements and functional foods .
2. The Main Sources of Food-Grade Omega-3 Fatty Acids
Omega-3 fatty acids include marine animals, microalgae, and plants. The differences in sources determine the diversity of their applications.
2.1 Marine animal-derived - mainstream fish oil
Common representative fish species include: anchovies, sardines, herring, mackerel, anchovies, tuna, and other deep-sea fish .
Main ingredients: EPA and DHA.The EPA and DHA content varies depending on the fish species . For example, anchovy oil has a higher EPA content, while salmon oil has a higher DHA content .
Advantages: Deep-sea fish oil is currently the most technologically mature, highest-yielding, most cost-effective, and most widely used source of omega-3 .
Disadvantages: It has a strong fishy smell and is susceptible to marine pollution (including heavy metals and polychlorinated biphenyls ). Not suitable for vegetarians.
Main application scenarios: Fish oil soft capsules, functional foods, infant nutrition foods and health foods.
Krill oil - Antarctic krill
Main ingredients: Phospholipid forms EPA + DHA , with added astaxanthin.
Advantages: Easily absorbed, highly bioavailable, and has a mild fishy smell.
Disadvantages: Low output, high cost, and limited application range.
Main application scenario: high-end health food.
2.2 Microalgae source - microalgae oil
Main components: DHA accounts for a large proportion, some algae species contain EPA, and it is not fish-derived .
Advantages: An important source of food-grade fish oil for vegetarians, without the risk of heavy metal pollution in the ocean. Stable supply chain.
Disadvantages: Most algae are low in EPA, so large-scale production would be too costly.
Main application scenarios: vegetarian plant-based nutritional products , infant formula , and high-end dietary supplements .
2.3 Plant source
Main ingredients: Plants rich in ALA include flaxseed oil, perilla oil, and chia seed oil . The EPA and DHA content is negligible.
Advantages: It has a refreshing flavor and can be used for nutritional fortification of ordinary cooking oils, effectively supplementing ALA.
Disadvantages: Low bioavailability, unable to meet the nutritional needs for high EPA/DHA levels.
Main application scenarios: plant-based foods , healthy oil products , natural nutritional foods.
3. Mainstream Dosage Form of Food-Grade Omega -3 Fatty Acids
ω-3 polyunsaturated fatty acids are highly susceptible to oxidation and spoilage at room temperature, producing a rancid or fishy odor that affects their usability. Modern industrial systems have developed formulations such as refined liquid oils, microencapsulated powders, and emulsions .
3.1 TG/EE Algal Oil, Fish Oil - Refined Liquid Oil Soft Capsules
Refined liquid oil softgels are typically pale yellow to orange-yellow transparent oils . These softgels have a relatively simple formula and can be directly packaged. They are a common dietary supplement on the market and are a common form of edible fish oil when searching for it on shopping platforms.
However, the aforementioned softgel fish oil products should be consumed as soon as possible after opening. They should be stored in a cool, dark, anaerobic environment. They are insoluble in water and are recommended to be taken after meals.
3.2 Microcapsule-encapsulated powder
Microencapsulation of powders typically involves using spray drying technology to place ω3-oil inside microcapsules . These microcapsules are made from ingredients such as gum arabic, maltodextrin, modified starch, and gelatin .
Food-grade omega - 3 fatty acid microcapsule powder possesses strong antioxidant properties and improved stability. It is water-soluble, has a low fishy odor, and a pleasant taste. It can be widely used in solid beverages, milk powder, rice flour , protein powder, and baking . It is currently one of the fastest-growing technologies in the industry.
3.3 Emulsion
Food-grade, clear, and safe fish oil undergoes emulsification and high-pressure processing to obtain omega- 3 emulsions , which can be added to liquid milk, oral liquids, and other functional beverages to effectively supplement EPA and DHA.
However, this product has a short shelf life and usually requires cold chain transportation; it should be consumed as soon as possible. Alternatively, it can be formulated with antioxidants (natural vitamin E) to extend its shelf life.
4. Core Quality Indicators of Food-Grade ω-3 Fatty Acids
4.1 Purity and content
The EPA + DHA content (%) determines the efficacy level of food-grade fish oil . For example, ordinary primary fish oil typically contains 30% EPA + DHA, while concentrated fish oil typically contains 50%-70% EPA + DHA , and some concentrated fish oil can reach 80%~95% . As a fish oil distributor, Polifar can supply high-quality 70%-85% concentrated fish oil on a long-term basis.
4.2 Freshness and Oxidation
Food-grade omega-3 fatty acids are highly susceptible to oxidation and require evaluation using indicators such as acid value, peroxide value, anisidine value, and total oxidation value to ensure they remain within legally regulated limits. For specific details, please refer to the Polifar fish oil COA. Sample testing is supported; we guarantee that the sample will be consistent with the shipped product batch and of the same quality.
4.3 Safety and pollutants
Since food-grade fish oil is mostly derived from marine animals, it is necessary to strictly control impurities such as heavy metals, microbial contaminants, and solvent residues.
The higher the core purity of food-grade fish oil and the lower the other adverse indicators, the greater its effects and the more effective it will be in supplementing the body's nutrition.
5. Applications of Food-Grade Omega -3 Fatty Acids
In fact, most of the applications of food-grade fish oil have already been explained in the full text. This section breaks it down to provide a more intuitive and systematic understanding of its applications.
5.1 Infant and maternal food
The nutritional needs of mothers during pregnancy help the fetus develop healthily during its growth cycle, and infants need DHA, ARA, and EPA after birth. These needs mean that infant formula, complementary foods, and pregnant and breastfeeding women all need to supplement with the corresponding nutrients.
5.2 Dietary supplements
In modern society, excessive screen time and mental exertion among teenagers, late nights and prolonged computer use among young office workers, and cardiovascular health issues among middle-aged and elderly individuals all necessitate fish oil supplementation. Fish oil can help relieve eye strain and enhance memory in teenagers and office workers . It also helps with anti-inflammatory and joint repair benefits for office workers and fitness enthusiasts, and lowers blood lipids and regulates blood pressure in middle-aged and elderly individuals.
5.3 Functional foods and regular diet
With health consciousness growing, people are paying more attention to their daily diet. Food-grade fish oil can be added to breakfast cereals, energy bars, dairy products, energy drinks, and baked goods to enhance their nutritional value.
5.4 Foods for Special Medical Purposes
Omega-3 fatty acids also play an irreplaceable role in the medical field. They are commonly used in rehabilitation nutrition products and high-nutrient-density foods . They help patients with inflammation, those who have just undergone surgery, or those with other tumors, by reducing inflammatory responses and improving metabolic status.
FAQ
Q1: Does Cod Have Omega 3 Fatty Acids?
Cod contains Omega-3, but in relatively low amounts. Cod is a low-fat white-fleshed fish, and its levels of core Omega-3 nutrients like EPA and DHA are far lower than those found in high-fat fish such as salmon and saury. Consuming small amounts can provide some Omega-3, but it is not a high-quality source.
Q2: Do Pecans Have Omega 3 Fatty Acids?
Yes, it contains pecans. Pecans are rich in plant-based Omega-3 (alpha-linolenic acid ALA), making them an excellent choice among nuts for supplementing plant-based Omega-3. However, the human body's conversion of plant-based ALA into DHA and EPA is very inefficient.
Q3: Is Omega 3 Fatty Acids And Fish Oil The Same?
The two are different and belong to an inclusion relationship:
Omega-3 is a general term for a class of unsaturated fatty acids; fish oil is extracted from the oil of deep-sea fish, and its core active ingredients are Omega-3 (EPA, DHA). In addition, ALA found in flaxseed and nuts also belongs to Omega-3, but it is not a component of fish oil.
Q4: Does Canned Tuna Have Omega 3 Fatty Acids?
Yes. Tuna itself is rich in DHA and EPA, and canned tuna also retains Omega-3; oil-packed tuna has a higher fatty acid content than water-packed tuna, although some fatty acids are lost during processing, it is still a convenient source of these nutrients.
Q5: Can You Get Too Much Omega 3 Fatty Acids?
Yes. Long-term, high-dose supplementation with fish oil/high-concentration Omega-3 supplements can pose risks: slower blood clotting, increased risk of bleeding, resulting in bleeding gums and slow wound healing; it may also cause nausea and diarrhea, and affect the immune system; the side effects of overdose are more pronounced in people taking medications (anticoagulants, antihypertensive drugs). A normal diet rich in natural foods generally won't exceed the recommended daily intake; most risks come from the misuse of high-concentration supplements.
Conclusion
Food-grade omega-3 fatty acids have high nutritional value, and the fish oil market still has enormous potential. Many businesses are gradually increasing the purity of their branded fish oil, leading to increasing competition within the industry and thus prompting further standardization of relevant laws and regulations.
However, it's foreseeable that the high-purity fish oil market is a trend. Whoever possesses low-cost, high-purification technology will gain a greater advantage in the market. At the same time, pure, natural, and clean fish oil will become increasingly popular. Polifar offers a long-term, stable supply of food-grade omega-3 fatty acids , with mature technology, high purity, and can meet the needs of a wide range of users. Fast delivery and stable quality make it one of the best suppliers for your fish oil business opportunity!