Plant Oil Extraction Methods

This lesson covers plant oils, their sources, extraction methods, and structure. Plant oils are found in various parts of plants and must be extracted using methods like mechanical extraction, distillation, and steam distillation. The structure of plant oils includes a glycerol head and fatty acid tails, which can be saturated or unsaturated. Saturated oils are solid at room temperature, while unsaturated oils are liquid. The lesson also explains how to differentiate between these oils using bromine water and summarizes the key points.

What parts of a plant can oils be found in?

• All parts including seeds, nuts, and roots

• Leaves and flowers only

• Bark and roots only

• Only seeds and nuts

Which method is NOT used for extracting plant oils?

• Mechanical extraction

• Distillation

• Steam distillation

• Fermentation

What is another name for the mechanical extraction method?

• Cold pressing

• Hot pressing

• Solvent extraction

• Steam pressing

Which oil is commonly extracted using mechanical extraction?

• Sunflower oil

• Lavender oil

• Olive oil

• Soy oil

What is the first step in the distillation process for extracting oils?

• Heating the oil

• Cooling the oil

• Dissolving the oil in a solvent

• Filtering the oil

Which method is used to extract floral oils like rose and lavender?

• Mechanical extraction

• Cold pressing

• Steam distillation

• Solvent extraction

What is the hydrophilic part of a plant oil's structure called?

• Hydrophobic tail

• Carbon chain

• Glycerol head

• Fatty acid tail

What type of bonds are present in saturated plant oils?

• Carbon-carbon double bonds

• Carbon-carbon single bonds

• Hydrogen bonds

• Ionic bonds

What is the process called that hardens unsaturated oils?

• Hydrogenation

• Fermentation

• Hydrolysis

• Oxidation

How can you differentiate between saturated and unsaturated oils in a lab?

• By their taste

• By testing with bromine water

• By their smell

• By their color