mahmaddrofmedicine
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Mar 09, 2025
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About This Presentation
All about lipids and fats
Size: 2.05 MB
Language: en
Added: Mar 09, 2025
Slides: 63 pages
Slide Content
Prepared by Asma Manzoor Rashid Latif college of Pharmacy 1 LIPIDS Prepared by Asma Manzoor
INTRODUCTION 2 Fixed oils ,fats and waxes are also in a broader sense collectively called LIPIDS. Definition: β Chemically Lipids can be defined as the esters of long-chains of fatty acids and alcoholsβ Fixed oils Lipids are the ester of long-chain fatty acids & alcohol or of closely related derivatives but in fixed oils fatty acid is unsaturated and liquid at room temperature. Example 1. Cotton seed oil 2. Castor oil 3. Linseed oil Prepared by Asma Manzoor
3 Fats Lipids are the ester of long-chain fatty acids & alcohol or of closely related derivatives but in fats fatty acid is saturated and solid at room temperature. . Example 1. Wool fat 2. Coconut oil Prepared by Asma Manzoor
4 If a substance is liquid at 15.5-16.5ΒΊC it is called a fixed oil if solid or semisolid at the above temperature, it is called a fat. Prepared by Asma Manzoor
5 Waxes Waxes are esters of long chains of fatty acids and alcohols. The fatty acids are same in wax and fats but the difference being saponification. Examples spermaceti beeswax carnuba wax Prepared by Asma Manzoor
Classification 6 The classification is based on the ability to absorb oxygen from the air. Fixed oil may be: Drying oil (more ability to absorb oxygen) 2. Semi-drying oil (less ability to absorb oxygen) 3. Non-drying oil (least ability to absorb oxygen) . Prepared by Asma Manzoor
Difference Between Volatile Oil and Fixed Oil 7 Volatile oils Also called as an essential oil. Volatile oil can evaporate when placed under room temperature They can be extracted easily by the distillation process There is no spot (no permanent stain) left after evaporation They are unable to undergo saponification . Mixtures of eleoptenes & stearoptenes are termed as volatile oils These are optically active. primary source are leaves,roots,in petals and bark. Prepared by Asma Manzoor
8 Fixed Oils Also called as natural non-volatile oil. Fixed oils do not evaporate at room temperature They require some specific techniques for extraction. Some type of spot (permanent stain) left after evaporation Fixed oils can be easily saponified . Esters of higher fatty acids & glycerin are called as fixed oils. These are optically inactive. Their major source is seeds of the plant. Prepared by Asma Manzoor
1. CASTOR OIL 11 Botanical Origin Ricinus communis Family Euphorbiaceae Part Used Oil obtained from the ripe seeds Preparation Oil is obtained from castor seeds after removing the seed coats and expressed at room temperature with 1-2 tons pressure per square inch till about 30 % oil is obtained. The oil contains toxic principle RICIN (a toxalbumin ) and enzyme Lipase Prepared by Asma Manzoor
12 Oil is refined by steaming which coagulates and precipitates the RICIN and lipases becomes inactive. The oil is then filtered and used for medicinal purposes. Prepared by Asma Manzoor
CONSTITUENTS 13 Castor oil contains Glycerides of Ricinoleic acid (80%) πΆπ»3(πΆπ»2)5πΆπ»(ππ»)πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Isoricinoleic acid Stearic acid Dihydroxy stearic acid Vitamin F (a hair growth vitamin) Prepared by Asma Manzoor
USES 14 Mild Purgative Lubricating agent Excellent active principle in Products for normal, damaged and delicate hairs,products for the scalp Body products Face products for normal and dry skin Prepared by Asma Manzoor
2. COTTON SEED OIL 15 Botanical Origin Gossypium herbaceum Family Malvaceae Part Used Dried ripe seeds Extraction Obtained by hot expression method Seeds are steamed and the pressed under 1500lb pressure to get 30% fixed oil Oil is turbid which is refined by filtration Now decolorize it and bleached Prepared by Asma Manzoor
16 Constituents Oil contains: Linoleic acid 45% πΆπ»3(πΆπ»2)4πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Oleic acid 30% Myristic acid 3% Palmitic acid 20% Stearic acid 1% Arachidic acid 1% Uses Solvents for number of injections Soap manufacture Cooking oil Prepared by Asma Manzoor
3. OLIVE OIL 17 Botanical Origin Olea europoea Family Oleaceae Part Used Ripe fruits Extraction Oil is obtained by expression method Different or various grades of olive oil available: Prepared by Asma Manzoor
18 Virgin olive oil Obtained by first expression of pulp of fruits Edible oil The marc is again expressed and finally sends for solvent extraction. The second extracted oil is edible oil Constituents It contains glycerides of the following fatty acids: Oleic acid 75% πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Linoleic acid Palmitic acid Stearic acid Prepared by Asma Manzoor
Uses 19 1.Β Olive oil has demulcent, emollient and laxative properties. 2. It is used as a vehicle for oily parenteral preparations. 3. It is also used in the preparation of lubricants, plasters, textiles, soaps, and in cosmetics Prepared by Asma Manzoor
4.PEANUT OIL 20 Botanical Origin Arachis hypogaea Family Leguminosae Part Used Dried ripe seeds Extraction By expression method Prepared by Asma Manzoor
Uses 22 1. Solvent for IM injection 2. Valuable lubricant 3. Food oil 4. Anti-oxidant Prepared by Asma Manzoor
5.SUNFLOWER OIL 23 Botanical origin Helianthus annuus Family Compositae Part used Ripe seeds Extraction Obtained by expression method Prepared by Asma Manzoor
Uses 25 1. Used as cooking oil due to high level of polyunsaturated fats 2. Used in cosmetic preparations due to its emollient effects. 3. Rich in vitamin E and low in saturated fats, thus helps in lowering chance of cardiovascular diseases. Prepared by Asma Manzoor
6.CORN OIL OR MAIZE OIL 26 Botanical Origin Zea mays Family Graminae Part Used Grains or seeds Constituents Linoleic acid 50% πΆπ»3(πΆπ»2)4πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Oleic acid 37% πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Palmitic acid 10% πΆπ»3(πΆπ»2)14πΆπππ» Stearic acid 3% πΆπ»3(πΆπ»2)16πΆπππ» Prepared by Asma Manzoor
USES 27 As the oil consist of higher contents of unsaturated fatty acids , it is regarded as of value in diet designed to limit blood cholesterol level in patients with hypercholesterolemia. It is used in place of other vegetable oils , in pharmaceutical and cosmetic preparations. Prepared by Asma Manzoor
7. COCUNUT OIL 28 Botanical Origin Cocos nucifera Family Palmae Extraction Coconut oil is obtained by expression or solvent extraction from the dried solid parts of the endosperm of cocos nucifera . Prepared by Asma Manzoor
USES 30 It is widely used as edible fats in confectionaries, cosmetics and pharmaceutically in oitment bases. Natural skin moisturizer Prepared by Asma Manzoor
8. ALMOND OIL 31 Botanical Origin Prunus amygdalis Dulcis variety: sweet Amara variety: bitter Family Rosaceae Part Used Ripe seeds Extraction Obtained by expressing the seeds of Prunus amygdalis Prepared by Asma Manzoor
33 Uses 1. Emollient 2. Mild laxative 3. Vehicle for oily injections 4. An ingredient in cosmetics Prepared by Asma Manzoor
9. LINSEED OIL( Flax seed), alsi 34 Botanical Origin Linum usitatissimum Family Linaceae Extraction Linseed oil is obtained by expression of linseeds Prepared by Asma Manzoor
CONSTITUENTS 35 Fixed oil 30-40% Linseed oil composed of the glycerides of the following fatty acids: Linoleic acid 23-24% πΆπ»3(πΆπ»2)4πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Oleic acid 10-18% πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Linolenic acid 36-50% πΆπ»3πΆπ»2πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Myristic acid πΆπ»3(πΆπ»2)12πΆπππ» Palmitic acid πΆπ»3(πΆπ»2)14πΆπππ» Stearic acid 5-11% πΆπ»3(πΆπ»2)16πΆπππ» Prepared by Asma Manzoor
USES 36 It is used as demulcent In the form of poultices for gouty and rheumatic swellings Linseed oil has emollient, expectorant, diuretic, and laxative properties and it is utilized externally in lotions and liniments. Prepared by Asma Manzoor
10. MUSTARD OIL ( Sarso ka tel ) 37 Botanical Origin Brassica nigra Family Cruciferae Part Used Ripe seeds Extraction: Oil is obtained by the expression of seeds Prepared by Asma Manzoor
11.SESAME OIL ( Til ) 40 Botanical Origin Sesamum indicum Family Pedaliaceae Part Used Ripe seeds Extraction Obtained by expression method Prepared by Asma Manzoor
41 Seeds contain: Fixed oil 45% Oil contains: Linoleic acid 45% πΆπ»3(πΆπ»2)4πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Oleic acid 45% πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Palmitic acid 9% πΆπ»3(πΆπ»2)14πΆπππ» Stearic acid 4% πΆπ»3(πΆπ»2)16πΆπππ» Stability of oil is due to phenolic compounds which is Sesamol Prepared by Asma Manzoor
42 Uses 1. Solvent for IM injections 2. Demulcent & emollient 3. Laxative 4. Anti-oxidant 5. Decrease cholesterol level 6. Headache pain and anxiety 7. Hair treatment and body massage 8. SESAMOLIN contained in the unsaponifiable fraction of the oil is an effective synergist for pyrethrum insecticides. Prepared by Asma Manzoor
12. SOYBEAN OIL 43 Botanical Origin Glycine max Family Leguminosae Part Used Ripe seeds Extraction Obtained by expression method Prepared by Asma Manzoor
USES 45 1 Extensively used as varnishes Plant sterols, chemicals derived from soybean oil, are used to lower totalΒ cholesterol and βbadβ low-density lipoprotein ( LDL )Β cholesterol . Specially processed soybean oil is used to treatΒ osteoarthritis . Some people apply soybean oil directly to theΒ skin Β to repelΒ mosquitoes Β and other insects. Soybean oil is also used as a nutritional supplement in intravenous feedings. Prepared by Asma Manzoor
46 FATS & RELATED COMPOUNDS Prepared by Asma Manzoor
1. LANOLIN (WOOL FAT) 47 Lanolin is the fat like purified secretions of the sebaceous glands which is deposited into the wool fibers of sheep Zoological Origin Ovis aries Family Bovidae Prepared by Asma Manzoor
CONSTITUENTS 48 Major constituents are; Cholesterol Isocholesterol Glycerides of different fatty acids: Lanopalmitic acid Lanoceric acid Carnaubic acid Oleic acid πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Myristic acid πΆπ»3(πΆπ»2)12πΆπππ» Other F.A in minor quantities. Prepared by Asma Manzoor
USES: 49 1.As emollient 2. Wool fat is rapidly absorbed through skin and helps in increasing the absorption of active ingredients incorporated in the ointment. Prepared by Asma Manzoor
2.THEOBROMA OIL(COCOA BUTTER) 50 Botanical Origin Theobroma cocoa Theobroma cacao Family Sterculiaceae Part Used: Roasted seeds Prepared by Asma Manzoor
CONSTITUENTS 51 It contains the glycerides of the following fatty acids; Linoleic acid 2% πΆπ»3(πΆπ»2)4πΆπ»=πΆπ»πΆπ»2πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Oleic acid 37% πΆπ»3(πΆπ»2)7πΆπ»=πΆπ»(πΆπ»2)7πΆπππ» Palmitic acid 26% πΆπ»3(πΆπ»2)14πΆπππ» Stearic acid 34% πΆπ»3(πΆπ»2)16πΆπππ» Prepared by Asma Manzoor
52 Uses: 1. Pharmaceutically used as suppositories base. 2. Emollient in cosmetics, soaps & lotions 3. Used as lubricant 4. Natural anti-oxidant product 5. In petroleum jelly 6. Used in manufacturing of chocolates, candies & biscuits. Prepared by Asma Manzoor
53 WAXES Prepared by Asma Manzoor
1.SPERMACETI 54 Zoological Origin: Physeter macrocephalus Family: Physeteridae Part Used: Wax like substance obtained from the head of sperm whale Prepared by Asma Manzoor
55 Constituents Cetyl laurate Cetyl myristate πΆπ»3(πΆπ»2)12πΆπππΆ16π»33 Cetyl palmitate πΆπ»3(πΆπ»2)14πΆπππΆ16π»33 Cetyl stearate πΆπ»3(πΆπ»2)16πΆπππΆ16π»33 Uses: 1. As an ingredient in cold cream & cosmetics. 2. Emollient & protective property. 3. As emulsifier Prepared by Asma Manzoor
2. BEEβS WAX 56 Zoological Origin: Apis mellifera Family: Apidae Part Used: Wax obtained from honey comb of the bee. Prepared by Asma Manzoor
57 Constituents: Myricyl palmitate (80%) πΆπ»3(πΆπ»2)14πΆπππΆ30π»61 Myricyl stearate πΆπ»3(πΆπ»2)16πΆπππΆ30π»61 Cerotic acid (wax acid) Uses: 1. In preparation of yellow ointment & plasters. 2. Used in cosmetics. 3. Used commercially in a number of polishes & candles Prepared by Asma Manzoor
3. CARNAUBA WAX 58 Botanical Origin: Copernicia prunifera Family: Palmae Part Used: Wax obtained from palm tree. Prepared by Asma Manzoor
4. JOJOBA OIL 60 Botanical Origin: Simmondsia chinensis Family: Buxaceae Part Used: Liquid wax obtained from the seeds Prepared by Asma Manzoor
CONSTITUENTS 61 This contains wax esters of fatty acids and alcohols. Unsaturated fatty acids are: Eicosenoic acid 35% Docosenoic acid Oleic acid Unsaturated Alcohols Eicosinol 22% Prepared by Asma Manzoor
62 Uses: 1. It possesses emollient property & is used as pharmaceutical aid. 2. Preparation of cosmetics, skin care & hair care preparations. 3. Manufacturing of lip balm. Prepared by Asma Manzoor