Ketonic and Aldehydic Volatile Oils
Session 32: Ketonic and Aldehydic Volatile Oils
Total Session Time: 120 minutes
Prerequisites
Learning Tasks
By the end of this session students are expected to be able to:
Resources Needed
SESSION OVERVIEW
|Step |Time |Activity/ |Content |
| | |Method | |
|1 |05 minutes |Presentation |Introduction, Learning Task |
|2 |20 minutes |Presentation |Spearmint Oil |
|3 |20 minutes |Presentation |Camphor Oil |
|4 |20 minutes |Buzzing |Lemon Oil |
| | |Presentation | |
|5 |20 minutes |Presentation |Orange Oil |
|6 |20 minutes |Presentation |Cinnamon Oil |
|7 |10 minutes |Presentation |Key Points |
|8 |05 minutes |Presentation |Evaluation |
SESSION CONTENTS
STEP 1: Presentation of Session Title and Learning Tasks (5 minutes)
READ or ASK students to read the learning tasks and clarify
ASK students if they have any questions before continuing.
STEP 2: Spearmint Oil (20 minutes)
o Spearmint oil is an aromatic essential oil obtained by steam
distillation of the dry/fresh leaves and flowering tops of Mentha
spicata
o Carvone
o Limonene
o Phellandrenes
o Esters
o Official oil should contain not less than 55% of carvone
o As a carminative agent
o As a flavouring agents in pharmaceutical preparations and foods
STEP 3: Camphor Oil (20 minutes)
o Camphor is an oil obtained by distillation of wood of stem ad root of
Cinnamomum camphora
o Brown and yellow camphor oil has high safrol levels and are toxic and
carcinogenic
o Main constituents include α-pinene, camphene, β-pinene, sabinene,
phellandrene, limonene, geraniol, safrole, cinnamaldehyde, eugenol,
methyl cinnamate
o Analgesic
o Antidepressant
o Anti-inflammatory
o Antiseptic
o Diuretic, febrifuge, anti-hypertensive, insecticide, laxative,
rubefacient, stimulant and vermifuge
o It is also used in cosmetics
STEP 4: Lemon Oil (20 minutes)
|Activity: Buzzing (5 minutes) |
| |
|ASK students to pair up and buzz on the following question for 2 |
|minutes |
| |
|What is lemon oil? |
| |
|ALLOW few pairs to respond and let other pairs to add on points not|
|mentioned |
| |
|WRITE their response on the flip chart/board |
| |
|CLARIFY and SUMMARIZE by using the content below |
o Lemon oil is an oil obtained by expression from the fresh peel of the
fruits of Citrus limon
o Vitamin C
o Limonene
o Flavonoids
o Glycosides
o Citronellol
o Hisperidine
o Carminative
o Aromatic
o Flavouring agent
STEP 5: Orange Oil (20 minutes)
o Orange oil is an essential oil obtained by expression from the rind
(peels) of bitter orange (Citrus aurantium) and sweet orange (Citrus
sinensis) family Rutaceae
o Vitamin C
o α-pinene
o Sabinene
o Limonene
o Myrcene
o Linanool
o citronellal
o Neral
o Geranial
o Calcium oxalate
o Carminative
o Flavouring agent
o Antiseptic
o Anti-depressant
o Antispasmodic
o Anti-inflammatory agent
o Carminative agent
o Cholagogoue
o Diuretic
o Sedative
o Tonic
STEP 6: Cinnamon Oil (20 minutes)
o Cinnamon oil is an oil obtained from dried inner bark of the shoot of
Cinnamomum loureirii, family Lauraceae
from hard wood as quill
o Constituents
o Uses
STEP 7: Key Points (10 minutes)
of the aerial structures of Mentha spicata
(peels) of an orange fruit, Citrus sinensis family Rutaceae
Cinnamomum camphora
STEP 8: Evaluation (5 minutes)
← What are the uses of lemon oil?
← What is orange oil?
← What are therapeutic uses of cinnamon oil
References
Ryman, Daniele (1984). The Aromatherapy Handbook: The Secret Healing Power
of Essential Oils. Century Publishing CO. Ltd. pp. Chapter 3.
Soares, I., Loreto, É, Rossato, L., Mario, D., Venturini, T., Baldissera,
F., Alves, S. (2015). In vitro activity of essential oils extracted
from condiments against fluconazole-resistant and -sensitive Candida
glabrata. Journal De Mycologie Médicale,25(3), 213-217.
doi:10.1016/j.mycmed.2015.06.003
Trease, G. E., Evans, W. C., & Evans, D. (2009). Trease and Evans
pharmacognosy. London: Saunders.
Joanne Barnes et al (2002), Herbal medicines 3rd Edition: Pharmaceutical
Press
Wallis, T. E. (2005). Textbook of pharmacognosy. New Delhi: CBS.
Robbers, J. E., Speedie, M. K., Tyler, V. E., & Tyler, V. E. (1996).
Pharmacognosy and pharmacobiotechnology. Baltimore: Williams &
Wilkins.
Heinrich, M., Kinghorn, A. D., Maizels, D., Gibbons, S., & Phillipson, J.
Churchill Livingstone/Elsevier.
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