If you are looking for PURE BLACK SEED OIL, regardless of the quantity you’re looking for, welcome to ZemZem Trading House.

We answer the following questions in guaranteeing you, what you are buying is high-quality product only:

  1. Seed’s origin used to extract the oil we are offering?
  2. Pureness level of the seeds?
  3. Number of times seeds were pressed to extract the oil?
  4. The pressing temperature?
  5. Is it filtered or non-filtered oil?

Nigella Sativa oil from Ethiopian black seeds:

  1. Seed’s Origin.

Black cumin quality is different from country to country, due to climate conditions, soil type, & the irrigation water used. A company in USA exclusively for black seeds, went far as to compare 12 Nigella Sativa seeds from its growing country, and gave Ethiopian seeds the top rank:

“Ethiopian seeds are the most nutritious when compared to other Nigella Sativa seeds from other countries” (bionatal llc. usa)


“Research from 2004-2016 showed that the best seeds are grown in Ethiopia.”

Ethiopia is endowed with a suitable condition for growing black cumin seeds. The seeds come rich in vitamins, minerals, & nutrients.

ZemZem Trade works close with farmer collection sites, & provides the necessary logistics from farms throughout the country. Although Ethiopian black seed oil are considered more expensive, ZemZem Trade offers real competitive prices without sacrificing quality.
In order to prove the origin of the seeds we provide you with an Ethiopian Certificate of Origin attached along with product shipments (sent through postal express).

Big companies worldwide extract oil from seeds of different countries yielding different qualities. Oil pressed from Ethiopian black seed oil gives you great results.


ZemZem Trade’s black cumin seeds for oil extraction:

Seeds: Ethiopian

Machine Cleaned: 99% Pure

Oil Color
1. Black (before allowed to set 3days):


2. Dark-Red (after 3 days of setting):


(but will appear lighter in small doses)

Bitterness: High
Quality: Considered to be the best quality on the planet

2. Pureness.

The quality of the oil pressed can also be affected by the pureness of the black cumin seeds. Upon harvesting the seeds from the fields, it is normal for the output to contain huge amounts of mixed dry flower petals, dry stems, dust, etc. but the major issue is the machine cleaning process, that will usually filter out 16 – 20% unwanted particles.

ZemZem Trade always maintains a 99% pureness policy for the black cumin seeds used for pressing. This fact is also mentioned in the inspection certificates:

Date of harvest for the seeds can affect the quality of Nigella Sativa oil. As you know, the price of seeds goes down when harvest season sets in and that is when the opportunity for buying fresh content happens. Extracting oil from 1-2year old seeds is discouraged for after the first year of storage mold can quickly grow.

ZemZemTrade stocks new crop at harvest time & generally sourcing what is not later than 12 months when out of season.

Phytosanitary Health Certificate:

3. Number of times seeds are pressed for oil.

Ethiopian black seeds contain 30-32% of oil. At ZemZemTrade we get about 25% of oil from pressing once, although pressing twice would result in more oil output and reduction of price for the final product.
The first press set at 49 ℃ is fine, but to re-insert the seeds for the second press would burn the seeds resulting in increased Benzopyrene and acid levels – degrading the quality.

“The international acceptable standard presence of Benzopyrene in products is 2.0 BaP but all twice-pressed oils have a level from 5.0 to 10.5 BaP.” (bionatal llc. usa)

At ZemZem Trade we press seeds once, to avoid the adverse effect on the final oil product from burning and high acid levels due to pressing twice.

4. Pressing Temperature.

For the oil to be designated as cold pressed, the temperature may not exceed 49 ℃ (120 ℉). Oils extracted this way retain their genuine flavour, aroma, and nutrients. By setting the temperature low during process, it prevents detrimental effects on the seed’s ingredients.

The cold-press extraction does not involve heat treatment nor chemical inputs. These oils have better nutritive properties than refined oils. Many of the temperature sensitive phenolic compounds are not lost and there are no oxidation reactions, which is referred to as “higher quality oil.

ZemZem Trade presses at 49 ℃ at an RPM of 23 – 33 cold rotation speed. Extracting 20-25% oil out of the 32% available in the seeds.

Cold press extraction as compared with soxhlet method extraction, is more economical and safe since it does not include use of solvents and heat treatment.

Extraction methods aside, other parameters that also affect the end product oil includes the origin of the seeds, harvest time, and agro-technical precautions (as explained in our black seed webpage).

5. Filtered or non-filtered oil.

Filtering involves putting the oil through thick layers of cloth to trap the tiny sediment particles of black seeds that may be in the oil. That’s the idea.

We don’t filter our black seed oil. We remove those sediment particles with the help of Mother Nature, namely gravity.

The oil is poured into large storage tanks housed inside a temperature-controlled room. (The exception is when customers prefer immediate bottled oil with the sediments included.) Inside the tank, the oil is allowed to settle for three days so Mother Nature can “suck” any remaining sediment particles to the bottom. This process is called “racking.”

During racking we move the oil from tank to our standard 10litre bottles made of safe quality food-grade plastic. The racking process typically is completed every three days, allowing us to ship a minimum of 5 new oil shipments every month.

The most noticeable difference between an unfiltered and a filtered black seed oil is appearance. The unfiltered oil appears black and cloudy, owing to residual sediment particles that weren’t removed through gravity in the settlement tank. Once the oil has been fully racked, however, the lower concentration of remaining sediment particles no longer has an adverse effect on the oil’s lifespan or quality.