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Description
Flashcards by scarlettjaynem, updated more than 1 year ago
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Created by scarlettjaynem
over 11 years ago
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| Question | Answer |
| What is an essential oil? | Hydrophobic liquids which contain mixtures of volatile aroma compounds |
| Uses of Essential oils | Used in perfumes, cosmetics products, cleaning products and as flavorings in foods. |
| How are essential oils extracted from plant material? | Through steam ditillation. Steam distillation allows the boiling point of the oils to be lowered, enabling them to be extracted. |
| What is the key component found in many essential oils? | isoprene |
| How are terpenes formed? | by the joining together of multiple isoprene units. |
| General formula for terpenes | (C5H8)n where "n" is the no. of isoprene units |
| What are the two structures isoprene units can form? | Linear - isoprene molecules join "head" to "tail" Cyclic - isoprene units join to form ring structures |
| What is a terpenoid? | a terpene containing oxygen |
| Why are terpenes important for flavour and the aroma of food? | Terpenes are an important component of essentail oils and are found in many spices and plants |
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