Walnut oil


Origin Our high-quality refined walnut oil is 100% from California.
Certificates Kosher
Article number 340030
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Production & description

Refined walnut oil is the fatty oil obtained from the seeds of the walnut tree by pressing and subsequent refining. (Juglans regia).

Walnut oil refined is a light yellow to golden yellow oil with a mild, slightly nutty to neutral taste and neutral smell.

Walnut oil refined

Gustav Heess

To produce our walnut oil we only use the walnuts of the so-called "real walnut" tree, also called " Juglandaceae" in Latin. With their many years of experience, Californian farmers are world leaders in the cultivation of walnuts. That is why we produce our walnut oil refined using 100% real Californian walnuts. Our own oil mill and refinery at our production unit Caloy in Modesto, California, is the world's largest producer of refined walnut oil. Through vertical integration up to the cultivation stage, our highly qualified employees ensure consistent quality to meet the ever-increasing demands of the market. Our team of agricultural engineers is in daily contact with the farmers in order to select only the highest quality real walnuts when sourcing the raw material. In 2016 our new oil mill was put into operation. The expeller presses were developed and built especially for us to produce nut oils in Germany. The crude oil is obtained by gentle mechanical pressing. In this process we work without additional pressing additives. Thus, we produce 100% high-quality walnut oil with a gentle process.

After pressing, refining takes place in our own specialty refinery, which was newly built in 2013 and expanded in 2017.

We refine at low temperatures, thus preserving all the important vitamins and naturally contained plant substances of the oil. Thanks to this treatment, the walnut oil obtained has a longer shelf life, but is more neutral in taste and odor than cold-pressed walnut oil.

Only nut oils are processed in our refinery. A mixing with other products is therefore excluded. No other producer in the world has specialized in nut oils as we do and offers a fully integrated production process from raw material to pressing and refining under one roof. This enables us to offer nut oils of a quality well above that available on the market.

In addition to high product quality, delivery reliability is also a top priority. Therefore, we maintain large storage capacities in the USA and in various European countries. This enables us to ensure supply anywhere, anytime and just in time. We not only promise security of supply and delivery - we can guarantee it.

Our 6-stage system ensures seamless quality control:

  1. by our agricultural engineers in the field
  2. by our own Caloy laboratory on receipt of the walnuts
  3. after pressing to oil
  4. in-process controls at each refining stage
  5. final inspection of the oil after refining
  6. before delivery to the customer by our Gustav Heess laboratory in Germany, officially accredited according to DIN ISO 17025


  • Cosmetics

    Suitable for Cosmetics
  • Food

    • The polyunsaturated fatty acid Omega 3 contributes to the health of the cardiovascular system.
    • The polyunsaturated fatty acids regulate the cholesterol level very well – without any side effects. Thus, walnut oil represents the healthy alternative to medicines, which should lower the cholesterol level
    • The balanced mixture of monounsaturated and polyunsaturated fatty acids and omega-3 fatty acids makes walnut oil a superfood and is therefore used by athletes and vegetarians
    • Walnut oil strengthens the immune system because its composition of different vitamins of the B and E group and fatty acids have a disinfecting and anti-inflammatory effect.
    • Regular consumption of walnut oil reduces the risk of cardiovascular diseases.
    • Studies show that walnut oil can lower blood pressure and keep it at a healthy level.
    • Walnut oil is well suited for cold dishes and is particularly popular in French cuisine.
    • Suitable for refining fish dishes, vegetables, soups or salad dressings
    • Helps with detoxification and healthy, long-term weight loss
  • Pharmaceutics

    Suitable for Pharmaceutics
INCI name: Juglans Regia Seed Oil
CAS number: 84012-43-1 / 8024-09-7
Botanical name: Juglans regia

Sustainability & responsibility

We only use real walnuts from California. California has been growing walnuts for more than a century. 99% of all walnuts produced in the USA come from California's fertile plantations. With its deep and nutrient-rich loamy soil and over 300 days of sunshine a year, the Central Valley offers the ideal growing conditions for walnut trees. The Californian walnut industry consists of approximately 4,800 mostly small and medium-sized farms that have been growing walnuts for several generations. We are in constant contact with the walnut growers and maintain long-term supply relationships. Our suppliers are members of the California Walnut Commission. This organization supports the walnut growers in various areas. This includes research, cooperation with universities and training. Two different types of training are offered. The FSMA (Food Safety Modernization Act) Grower Training and the GAP Trainings (Good Agricultural Practices). In these trainings, knowledge about sustainable soil management and the reduction of water consumption is taught.

Waste is minimized by using all by-products of walnut cultivation. In addition to the walnuts, the two by-products shell and skin are used as animal feed and as stable bedding.

Due to our strategically chosen production site, the transport distances from the field to the oil mill are particularly short. In addition to this location advantage, we offer fully integrated production under one roof. This means that the entire process from raw material, pressing and refining takes place under one roof and is constantly monitored by our quality control department. Quality also means avoiding and therefore we completely avoid pressing additives during the pressing process.

Many market competitors only ever carry out individual production steps, e.g. only pressing or only refining. Therefore, they are dependent on the preliminary products of outsourced suppliers.

We are convinced that for a sustainable and high-quality refined walnut oil, a fully integrated production is required, as this is the only way to guarantee the high oil quality and to protect the environment.

25,000 kg
Tank truck

900 kg

190 kg

27 kg

General durability: canister 12 months, drum 18 months, IBC 6 months

Nutritional values & composition

Nutritional value (per 100g)
Energy 3,700 kJ / 900 kcal
Fat 100 g
Saturated fatty acids 10 g
Monounsaturated fatty acids 15 g
Polyunsaturated fatty acids 75 g

Fatty acids ratio


C18:1 Oleic acid 14 – 21 %
C18:2 Linoleic acid 54 – 65 %
C18:3 Linolenic acid 9 – 15 %

You want to buy Walnut oil?

Request now free of charge and without obligation from Gustav Heess. We deliver Walnut oil ...

  • worldwide
  • fast
  • reliable

We offer Walnut oil in the following packaging units:

  • 25,000 kg
    Tank truck
  • 900 kg
  • 190 kg
  • 27 kg

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