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Kelp Extract

Product Name Kelp  Extract
Active Ingredients Fucoxanthin, Alginate, Fucoidans, Polyphenols

CAS Number

Fucoxanthin: 3351-86-8

Alginate: 9005-38-3


Molecular Formula

Fucoxanthin: C42H58O6

Alginate: Variable (C6H706-)n

Molecular Weight Fucoxanthin: Approximately 658.91 g/mol
Applications Personal Care, Dietary Supplements, Functional Foods, Animal Nutrition, etc.
Package 1kg,5kg/bag, 25kg/drum


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Kelp Extract


What Is Kelp Extract?

Kelp extract is a substance obtained from kelp seaweed, a type of large brown algae found in underwater environments. It’s processed to concentrate its beneficial nutrients, such as vitamins, minerals, amino acids, and antioxidants. This extract is commonly used in various products, including dietary supplements, skincare items, and cosmetics, due to its potential health and beauty benefits. These benefits may include support for thyroid health, skin hydration, and antioxidant protection against environmental stressors.

Overall, it serves as a natural source of nourishment for both internal and external use.

Active Ingredient In Kelp Extract

Powdered kelp extract is a rich source of bioactive compounds, each offering unique health-promoting properties. Among its notable constituents are Fucoxanthin, Alginate, Fucoidans, and Polyphenols.

Fucoxanthin, characterized by its vibrant yellow pigment, boasts a CAS number of 3351-86-8, a molecular weight of approximately 658.91 g/mol, and a formula of C42H58O6.

Alginate, a polysaccharide renowned for its gel-forming abilities, lacks a single CAS number, molecular weight, or formula due to its variable structure, dependent on polymerization degree, but is commonly denoted as (C6H7O6-)n.

Fucoidans, complex sulfated polysaccharides with diverse biological activities, don’t possess uniform CAS numbers, molecular weights, or formulas, as they are composed of repeating units of fucose, sulfate, and other monosaccharides, varying by source and extraction method.

Polyphenols, encompassing a plethora of antioxidant compounds, also lack singular CAS numbers, molecular weights, or formulas, as they comprise various structures such as flavonoids and phenolic acids.

Despite the absence of standardized identifiers for Alginate, Fucoidans, and Polyphenols, their presence in powdered kelp extract underscores their potential to promote overall health and well-being through their synergistic effects.

Kelp Extract Benefits

Thyroid Health Support

It is a natural iodine source, an essential thyroid function mineral. Adequate iodine intake helps regulate thyroid hormone production and is vital for metabolism, energy levels, and overall hormonal balance.

Nutrient-Rich Composition

It contains various vitamins (such as vitamins A, C, E, and B) and minerals (including calcium, magnesium, potassium, and iron) essential for overall health and well-being.

Antioxidant Armor

The extract’s antioxidants combat oxidative stress and neutralize free radicals, reducing the chances of chronic illnesses.

Digestive Harmony

Kelp extract’s alginate polysaccharide supports digestive wellness by enhancing the proliferation of advantageous gut microbiota via prebiotic impacts.

Aid in Loss Weight Management

It contains fucoxanthin, which may increase metabolic rate and reduce fat accumulation, promoting healthy weight management.

Aid Skin Regeneration

Kelp extract is a popular skincare ingredient known for its hydrating, anti-inflammatory, and antioxidant properties. It can improve skin elasticity, reduce inflammation, and protect against premature aging from environmental stressors.

Rich In Vitamins and Minerals

The vitamins and minerals in kelp extract, such as vitamin C, iron, and zinc, contribute to healthy hair growth and may aid in helping avoid hair loss and promote stronger, shinier hair.

Bone Health Support

The calcium, magnesium, and vitamin K found in kelp extract benefit bone health. They can aid in preventing osteoporosis and preserving bone density as we age.

Boosts Immunity

The nutrients and bioactive compounds in kelp extract support overall immune function, helping to strengthen the body’s defense against infections and diseases.

Rich in Antioxidants

It contains compounds that may support the body’s natural detoxification processes, helping to eliminate toxins and heavy metals from the body.

Nutrition Values

The nutrition values of the powdered kelp extract may differ due to the extraction method and additional processes made. Yet, Kelp is rich in nutrients, including iron, vitamin K, iodine, and is also a great source of magnesium and fiber.

According to the USDA states that 1 cup of raw kelp contains:

· Calories: 43

· Protein: 1.68 g

· Fiber: 1.3 g

· Calcium: 168 mg

· Iron: 2.85 mg

· Magnesium: 121 mg

· Potassium: 89 mg

· Sodium: 233 mg

· Zinc: 1.23 mg

· Copper: 0.13 mg

· Manganese, Mn: 0.2 mg

· Folate: 180 µg

· Vitamin A: 116 IU

· Vitamin K: 66 µg

Application and Uses

It has a variety of common applications and uses due to its beneficial properties. Some of the most common applications include:

1)Health Food Industry: Super food additives, suitable for incorporation into various products such as dairy, beverages, health supplements, pastries, cold drinks, jelly, bread, and milk.

2)Cosmetics Sector: Serves as a water-soluble polymer natural extract with anti-inflammatory and sterilizing effects, offering a high moisturizing alternative to glycerin.

3) Pharmaceutical field : Acts as a key ingredient in the production of new traditional medicines, commonly found in kidney health products.

How to Use Kelp Extract Powder?

1)Supplements: Easily incorporate kelp extract powder into your diet by mixing it with beverages for a convenient dietary boost.

2)Skincare: Create a nourishing face mask by blending kelp extract powder with water, aloe vera gel, or facial oil. Apply the mask to clean skin, leave for 10-15 minutes, then rinse for a refreshed complexion.

3)Haircare: Enhance your shampoo or conditioner by adding kelp extract powder for added nourishment. For a revitalizing hair mask, mix with coconut oil or yogurt, apply to damp hair, leave for 20-30 minutes, then rinse thoroughly.

4)Cooking: Elevate your recipes with kelp extract powder for extra nutrition. Sprinkle it on soups, salads, stir-fries, or sauces to impart subtle umami flavor and essential vitamins and minerals.

5)Fertilizers: Utilize kelp extract powder as a natural fertilizer for your plants. Dilute as instructed on the label, then use regularly to water your plants for healthier growth.

Where to Buy Bulk Kelp Extract Powder From a USA Supplier ?

Looking for bulk botanical extract powder from a reliable US supplier? Choose Nutri Avenue! Our wholesale prices, quick shipping from five US warehouses, and sample options ensure quality and convenience. Rest assured, our FDA-registered products undergo rigorous testing for purity and potency. Contact us for More raw supplement ingredients details.


While kelp extract and seaweed extract both offer health benefits and come from different types of seaweed, they’re not the same. Kelp extract specifically originates from a large brown seaweed known as kelp. In contrast, seaweed extract can be derived from various seaweeds, including kelp, bladderwrack, spirulina, and more. So, although they share similar origins and health benefits, kelp extract represents just one type of seaweed extract. 

The prices vary based on factors like quality and quantity, typically ranging from a few dollars to several hundred per kilogram or pound. For Nutri Avenue’s exact pricing, contact: directly or check our price update page.

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