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Document Type |
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Thesis |
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Document Title |
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Study of Seeds Morphology and Chemical Component as Taxonomical Charactes of the genus Lavandula sp. (Lamiaceae) in Saudi Arabia دراسة مورفولوجيا البذور وبعض المركبات الكيميائية كخصائص تصنيفية لجنس اللافندر ( الفصيلة الشفوية ) في المملكة العربية السعودية |
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Subject |
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Taxonomical Charactes of the genus Lavandula sp. |
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Document Language |
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Arabic |
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Abstract |
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In the present study , the role of the seeds morphology and some phenolic compounds as differential diagnosis of Lavandula spp. ( L . artiplicifolia , L . citridora , L . coronopifolia , L .dentata and L. pubescens ) growing in Saudi Arabia was demonsterated. Since Lavandula is a member of the medicinal plants group which have aromatic oils and since the flowers of L. artiplicifolia are yellow whereas the flowers of the other species are blue to violot, the taxonomic relationship among these species was also discussed . Generally , the seeds of the studied species are different in their properties whereas the seeds of L. artiplicifolia are different in shape and surface . Flavonoids were classified according to their chemical structure to three groups . O-flavonols included Quercetin , Kaempferol, Quercetrin (quercetin -3-rhamnoside) , Isoquercetrin (quercetin,3-glucsoide) and Rutin (quercetin-3-rutinosid) . O-flavones were represented by Luteolin and Apigenin .The later was accompanied by its C-flavones ; Vitexin . Both hydrolyable and condensed tannins were detected . –(-)Epicatechin and (+)-catechin;the flavan derivatives and the precursor of condensed tannins were also detected. Five phenolic acids were detected ; Vanillic acid (4-hyderoxy-3-methoxybenzoic acid) ,2,3-dihydroxybenzoic acid, Protocatechuic acid (3,4-dihyoxybenzoic acid , Gentisic acid (2,5- dihydroxybenzoic acid) and Gallic acid (3,4,5 trihydroxybenzoic acid ) which is the precursor of the hydrolysable tannins. According to the obtained results the taxonomical position of L . artiplicifolia was discussed i.e separating this species from the other species under study to belongs to the subgenus Subbodia.The medicinal importance of the isolated compounds was demonstrated. |
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Supervisor |
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Eisha Khogali |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1430 AH
2009 AD |
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Co-Supervisor |
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Farag Al-Ghamdi |
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Added Date |
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Tuesday, January 11, 2011 |
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Researchers
| أشواق حسن الصبان | Alsabban, Ashwaq Hassan | Researcher | Master | Shroooge@hotmail.com |
| عائشة محمد علي خوجلي | Khogali, Aisha Mohamed Ali | Researcher | Doctorate | |
| فرج عبد الله الغامدي | Al-Ghamdi, Farag Abdallah | Researcher | | |
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