PG313 - Lecture 1

Which of the following is true about fixed oil

• They are volatile distillable liquids

• They have limited solubility in organic solvents

• They are glyceryl esters of fatty acids

• They have non nutritive value

Oils rich in oxygenated compounds (such as oil of mentha), on cooling they separate into a liquid fraction called ......

• Eleoptene

• Stearoptene

• Comphors

......... are the dried fragrant, aromatic or pungent plant parts or their powder, which contain a volatile oil used to impart aroma and flavor to foods, rather than for nutrition.

• Flavors

• Volatile oil

• Spices

• Fixed oil

......... are products or substances, added to foods, beverages and medicines to mask or improve the taste or smell.

• Flavors

• Volatile oil

• Spices

• Fixed oil

Which of the following is true about volatile oil

• They are miscible with water

• Mostly heavier than water

• They are colorless mobile liquids at room temperature

• Most of them are optically inactive