oil content and physicochemical characteristics of oils

More documents

Recommendations

Info

The plant seed oil contents reported in this study are high compared to some food crops such as soybean and olive seed. The oils of the plants studied here have potential for use in food especially M. eminii, P. usambarensis and T. vogelii oils because of their essential fatty acids content; M. arboreus and M. holstii oils due to their high linoleic acid content; M. eminii oil because it has fatty acid with similarities with to that of groundnut oil and C. procera oil which was found to be more stable as deep frying oil. Some of the oils from the studied wild plants showed good promise in use in the cosmetic industry and particularly most promising are C. grandiflora, C. procera, M. arboreus, M. holstii and P. usambarensis seed oil due to their fatty acids profile and high unsaponifiable matter content. These plant oils may also have good application as biofuels and the most promising are those of high density and relative low melting point as T. vogelii, T. africana, M. arboreus, M. holstii, C. grandiflora, M. dura and C. procera. P. macrophylla, P. usambarensis, M. dura and T. vogelii seed oils may be sources for long chain fatty acids which have important chemotaxonomic significance. 14
1.1. Background CHAPTER ONE INTRODUCTION Many important plant species in Kahuzi-Biega National Park (KBNP) and surrounding areas in the Democratic Republic of Congo (D.R.C.) are threatened with extinction (Kaleme et al., 2007). The threats towards these species include habitat conversion and degradation, and unsustainable uses of the species (Kasereka, 2003). In order to conserve these species, there is need to highlight other important sustainable exploitations of these species by documenting and validating their uses (Tabuti, 2003). One of the important uses of plants is in the production of oil. Oil is a very important resource, much in demand everywhere in the world and is used in a variety of ways (Pryde and Carlson, 1985). The sources of oils and fats are diminishing, this means therefore that there is a growing need for the search of new sources of oil as well as exploiting sources that are currently unexploited in order to supplement the existing ones (Mohammed et al., 2003). Furthermore, the price of edible oil is increasing due to the effects of turning edible oil into energy sources (Nyapendi, 2008). Similarly the biodiesel market is growing (Pioch and Vaitilingom, 2005). The oil for nutritional use and derivate products like soaps, cosmetics and medicinal products have become more unaffordable for most people because the sources of these products are small and limited (ABC, 2003). The world yearly production of oils exceeds 120 millions tons of which about 4/5 are devoted to food uses, the remainder is used for non food uses, for example in making animal feeds, soap, 15
Page 1 and 2: OIL CONTENT AND PHYSICOCHEMICAL CHA
Page 3 and 4: DEDICATION To my wife Esther MUSHIY
Page 5 and 6: TABLE OF CONTENTS DECLARATION...…
Page 7 and 8: 3.2.2. Plant seed oil content deter
Page 9 and 10: 6.1. Conclusions ………………
Page 11 and 12: LIST OF FIGURES Figure 1: Location
Page 13: ABSTRACT Many important plant speci
Page 17 and 18: Kabele et al. (1975) analyzed FAs f
Page 19 and 20: 2.1. Oil and fat structure CHAPTER
Page 21 and 22: (Dawodu, 2009; Ferris et al., 2001)
Page 23 and 24: 2.3.4. Unsaponifiable matter The Un
Page 25 and 26: There are two families of polyunsat
Page 27 and 28: 2.2.6.2. Fatty acid composition of
Page 29 and 30: 2.4. A review of wild oil plants th
Page 31 and 32: 2.4.5. Millettia dura Dunn (Fabacea
Page 33 and 34: 2.4.9. Podocarpus usambarensis Pilg
Page 35 and 36: Table 5: Review of oil fatty acid o
Page 37 and 38: Figure 1: Location of sampling site
Page 39 and 40: 3.2.1.1. Extraction procedure descr
Page 41 and 42: 3.2.3. Determination of physical an
Page 43 and 44: 3.2.3.4. Percentage of unsaponifiab
Page 45 and 46: Table 7: Chromatographic Equipment
Page 47 and 48: 4.1. Plant seed oil content CHAPTER
Page 49 and 50: Table 9: Melting point ranges of oi
Page 51 and 52: % Unsaponif. matter 3.0 2.5 2.0 1.5
Page 53 and 54: Table 10: Fatty acid (FA) compositi
Page 55 and 56: Table 11: Saturated FAs, Monounsatu
Page 57 and 58: (1944). For Carapa procera there ar
Page 59 and 60: (1944) had reported melting range o
Page 61 and 62: those of Pentaclethra macrophylla a
Page 63 and 64: About Myrianthus holstii, the curre
Page 65 and 66:
5.3.6. Omega-6 (ω-6) and Omega-3 (
Page 67 and 68:
In Cardiospermum halicacabum seed o
Page 69 and 70:
• Carapa procera seed oil rich in
Page 71 and 72:
• Further investigations on Cardi
Page 73 and 74:
AOCS. (1993). Official methods and
Page 75 and 76:
CSGNetwork.com. Online, www.csgnetw
Page 77 and 78:
ICRAF. (2008). A tree species refer
Page 79 and 80:
Nawar, W.W. (1996). Lipids. In Fenn
Page 81 and 82:
StasoSphere. (2007). Determination
Page 83 and 84:
APPENDICES: Appendix 1: Analysis of
Page 85 and 86:
Appendix 2: Gas Chromatogram of fat
Page 87 and 88:
Page 89:
show all

oil content and physicochemical characteristics of oils

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?