Alcoholic and Hydrocarbon Volatile Oils
Session 31: Alcoholic and Hydrocarbon 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 Tasks |
|2 |25 minutes |Presentation |Peppermint Oil |
|3 |25 minutes |Presentation |Cardamom Oil |
|4 |25 minutes |Presentation |Coriander Oil |
| | |Buzzing | |
|5 |25 minutes |Presentation |Turpentine 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: Peppermint Oil (25 minutes)
o Peppermint oil is an oil that has a strong peppermint odour and
produces a cooling sensation in the mouth obtained by distillation
from dried leaves and flowering tops of Mentha piperita L. (Fam.
Labiatae)
o Menthol
o Menthone
o Methyl acetate
o The official oil is required to contain 4.5 – 10% of esters calculated
as methyl acetate, not less than 44% of free alcohols calculated as
menthol and 15-32% of ketones calculated as menthone
o Peppermint, and is used chiefly as a flavouring agent and as a
carminative
o Treatment of common cold, cough, inflammation of the mouth and throat,
sinus infections, and respiratory infections
o Treatment of digestive problems including heartburn, nausea, vomiting,
morning sickness, irritable bowel syndrome, cramps of the upper
gastrointestinal tract and bile ducts, upset stomach, diarrhea,
bacterial overgrowth of the small intestine, and gas
o Peppermint oil is also used for headache, muscle pain, nerve pain,
toothache, inflammation of the mouth, joint conditions, itchiness (the
oil is a counterirritant), allergic rash, bacterial and viral
infections, relaxing the colon during barium enemas, and for repelling
mosquitoes
o Used as a flavouring agent
o It has carminative action
STEP 3: Cardamom Oil (25 minutes)
o Cardamom oils is an oil obtained from dried ripened seeds of Elettaria
cardamomum, family Zingiberaceae
o Terpinol
o Terpinyl acetate
o Borneol
o Fixed oils
o Flavouring agent
o Carminative
o Gastrointestinal stimulant
o Used in dyspepsia and flatulence
STEP 4: Coriander Oil (25 minutes)
o Coriander oil is an oil obtained from fresh leaves and dried seeds of
Coriander sativum, family Umbeliferae
o d-pinene
o fixed oil
o Calcium oxalate
|Activity: Buzzing (10 minutes) |
| |
|DIVIDE students into small manageable groups |
| |
|ASK students to discuss on the following question |
| |
|What are the uses of coriander oils? |
| |
|ALLOW students to discuss for 5 minutes |
| |
|ALLOW few groups to present and the rest to add points not |
|mentioned |
| |
|CLARIFY and SUMMARIZE by using the contents below |
o Flavouring agent
o Carminative agent
o Stimulant
STEP 5: Turpentine Oil (25 minutes)
o Turpentine oil is an oil obtained by distilation from Pinus palustris
and other species of Pinus e.g. Pinus longifolia, family Pinaceae
o The oil is colourless with characteristic odour and highly flammable
o The oil is re-distilled with NaOH to form rectified oil of turpentine
o ( and (- Pinene
o Methylcarbachol
o Camphene
o Counter irritant
o Local irritant
o Rectified oil is used internally as a diuretic, urinary antiseptic,
anthelminthic and expectorant
STEP 7: Key Points (10 minutes)
cooling sensation in the mouth obtained by distillation from dried leaves
and flowering tops of Mentha piperita
carminative
and other species of Pinus belonging to family Pinaceae
STEP 8: Evaluation (5 minutes)
← What are the uses of peppermint oil?
← What is the use of coriander oil?
← What is the source of cardamom 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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