HOME / ARTICLES / EXTRACTION OF AVOCADO OIL – PROCESS, BENEFITS, AND STANDARDS

ARTICLES

Extraction of Avocado Oil – Process, Benefits, and Standards

Q: What are the actual process steps in a cold-pressed avocado oil line?

The cold-pressed avocado oil process resembles olive oil production with added steps: de-skinning and de-seeding of ripe avocados, grinding the pulp into a paste, malaxation at 45–50°C for 40–60 minutes, centrifugal separation to isolate oil, water and solids, and final polishing centrifuges for oil clarity. Ripeness at intake and controlled malaxation time and temperature govern the quality achieved.

Q: What quality figures should we target to sell as extra virgin avocado oil?

Cold-pressed extraction, correctly operated, delivers high-quality avocado oil with Free Fatty Acid below 0.5% and Peroxide Value below 4 meq/kg. These values meet international standards for extra virgin oil. Holding malaxation at 45–50°C for 40–60 minutes and using polishing centrifuges for clarity are the process levers that keep FFA and PV within those limits.

Q: Why is malaxation temperature held at 45–50°C rather than higher?

In avocado oil extraction, malaxation is carried out at 45–50°C for 40–60 minutes to coalesce oil droplets before centrifugal separation while keeping the process within cold-pressed limits. Optimised time and temperature settings protect the oil's nutritional integrity and keep Free Fatty Acid below 0.5% and Peroxide Value below 4 meq/kg, as required for extra virgin grade.

Q: Are there alternatives to mechanical pressing if we want higher yield?

Yes. Alongside mechanical cold pressing, avocado oil can be recovered by supercritical CO₂ extraction, aqueous enzymatic extraction, and ultrasonic-assisted or microwave-assisted extraction. These advanced methods enhance yield and oil stability without compromising nutritional integrity, provided they are operated under optimised time and temperature settings. Selection depends on the product grade and end market targeted.

Q: What is the commercial case for setting up an avocado oil extraction plant?

Avocado oil extraction is a sustainable opportunity for regions with surplus avocado production. Mexico leads global output at 5.6 million tonnes annually, over 34% of global supply, and China is emerging as a major grower in Yunnan, Guangdong, Fujian and Hainan but lacks processing infrastructure. Extraction plants minimise post-harvest losses and add value where overcapacity in fresh produce looms.

Q: What is the difference between unrefined and refined avocado oil in terms of end use?

Unrefined avocado oil is green and flavour-rich, making it ideal for gourmet cooking. Refined avocado oil is pale yellow and is used in cosmetics and moisturisers. The intended market therefore decides whether a plant stops at cold-pressed and polished oil or includes refining, and this choice drives the downstream equipment and packaging design.

By PMG Engineering · 3 Dec 2024

Overview of Avocado and Its Industrial Significance

Avocado (Persea americana) is a tropical and subtropical fruit with immense nutritional and economic value. As of recent years, Mexico leads global avocado production with 5.6 million tonnes annually, contributing to over 34% of global supply. While China is emerging as a major grower—especially in Yunnan, Guangdong, Fujian, and Hainan—the lack of a food processing plant infrastructure limits value addition.

To minimize post-harvest losses and improve food manufacturing efficiency, it is essential to invest in avocado oil extraction plants—especially as overcapacity in fresh produce looms large.

Avocado Oil Extraction Methods

Mechanical Extraction Process

The cold-pressed avocado oil process closely resembles olive oil production, with added steps:

De-skinning and de-seeding of ripe avocados
Grinding the pulp into a paste
Malaxation at 45–50°C for 40–60 minutes
Centrifugal separation to isolate oil, water, and solids
Final polishing centrifuges for oil clarity

This cold-pressed technique ensures high-quality avocado oil with low Free Fatty Acid (FFA <0.5%) and Peroxide Value (PV <4 meq/kg), meeting international standards for extra virgin oil.

Alternative Extraction Technologies

Advanced methods used in food technology consulting include:

Supercritical CO₂ extraction
Aqueous enzymatic extraction
Ultrasonic-assisted and microwave-assisted extraction

These methods enhance yield and stability without compromising on nutritional integrity, especially when operated under optimized time and temperature settings.

Nutritional and Functional Properties of Avocado Oil

Key Nutrients (Per Tablespoon)

Calories: 124
Fat: 14g (majorly monounsaturated)
Vitamin E
Oleic Acid
Lutein (an eye-healthy carotenoid)

Health Benefits

Lowers LDL cholesterol, boosts HDL
Reduces blood pressure
Supports heart health through anti-inflammatory actions
Enhances nutrient absorption of fat-soluble vitamins
Used in food, cosmetic, and pharmaceutical industries

Application in Food and Skin Care

Unrefined avocado oil is green and flavor-rich—ideal for gourmet cooking.
Refined avocado oil is pale yellow, used in cosmetics and moisturizers.

Avocado Oil Grades and Industry Standards

Based on extensive research by New Zealand, Australian, and Californian institutes, the following avocado oil grades have been proposed for the food processing consultancy sector:

Standards of different grades and types of avocado oil

Avocado Oil Grades and Industry Standards

Based on extensive research by New Zealand, Australian, and Californian institutes, the following avocado oil grades have been proposed for the food processing consultancy sector:

Conclusion

The extraction of avocado oil presents a sustainable opportunity for regions with surplus avocado production. With proper engineering design, project management, and adherence to global quality standards, businesses can establish world-class food processing plants. This creates a win-win scenario for both food industry growth and consumer wellness.

Frequently asked

What are the actual process steps in a cold-pressed avocado oil line?

The cold-pressed avocado oil process resembles olive oil production with added steps: de-skinning and de-seeding of ripe avocados, grinding the pulp into a paste, malaxation at 45–50°C for 40–60 minutes, centrifugal separation to isolate oil, water and solids, and final polishing centrifuges for oil clarity. Ripeness at intake and controlled malaxation time and temperature govern the quality achieved.

What quality figures should we target to sell as extra virgin avocado oil?

Cold-pressed extraction, correctly operated, delivers high-quality avocado oil with Free Fatty Acid below 0.5% and Peroxide Value below 4 meq/kg. These values meet international standards for extra virgin oil. Holding malaxation at 45–50°C for 40–60 minutes and using polishing centrifuges for clarity are the process levers that keep FFA and PV within those limits.

Why is malaxation temperature held at 45–50°C rather than higher?

In avocado oil extraction, malaxation is carried out at 45–50°C for 40–60 minutes to coalesce oil droplets before centrifugal separation while keeping the process within cold-pressed limits. Optimised time and temperature settings protect the oil's nutritional integrity and keep Free Fatty Acid below 0.5% and Peroxide Value below 4 meq/kg, as required for extra virgin grade.

Are there alternatives to mechanical pressing if we want higher yield?

Yes. Alongside mechanical cold pressing, avocado oil can be recovered by supercritical CO₂ extraction, aqueous enzymatic extraction, and ultrasonic-assisted or microwave-assisted extraction. These advanced methods enhance yield and oil stability without compromising nutritional integrity, provided they are operated under optimised time and temperature settings. Selection depends on the product grade and end market targeted.

What is the commercial case for setting up an avocado oil extraction plant?

Avocado oil extraction is a sustainable opportunity for regions with surplus avocado production. Mexico leads global output at 5.6 million tonnes annually, over 34% of global supply, and China is emerging as a major grower in Yunnan, Guangdong, Fujian and Hainan but lacks processing infrastructure. Extraction plants minimise post-harvest losses and add value where overcapacity in fresh produce looms.

What is the difference between unrefined and refined avocado oil in terms of end use?

Unrefined avocado oil is green and flavour-rich, making it ideal for gourmet cooking. Refined avocado oil is pale yellow and is used in cosmetics and moisturisers. The intended market therefore decides whether a plant stops at cold-pressed and polished oil or includes refining, and this choice drives the downstream equipment and packaging design.

CITE THIS

PMG Engineering. (2024). Extraction of Avocado Oil – Process, Benefits, and Standards. PMG Engineering. https://pmg.engineering/Article/385/extraction-of-avocado-oil-process-benefits-and-standards/

https://pmg.engineering/Article/385/extraction-of-avocado-oil-process-benefits-and-standards/