الفهرس 
Title: A pharmacognostical study of Thrinax parviflora (Sw.) and Livistona carinensis
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Abstract
Chemical characteristics of family Palmae (Arecaceae), include the accumulation of polyphenols, fatty acids, sterols as well as steroidal saponins and oil. Livistona carinensis and Thrinax parviflora are members of family Arecaceae. The preliminary phytochemical screening tests revealed that tannins, carbohydrates, flavonoids and sterols were present in both plants leaves, pericarp and seeds. Saponins are found to be more prominent in T. parviflora than L. carinensis leaves. Study of the lipid content of the both plants leaves, pericarp and seeds revealed the presence of the unsaturated fatty acids palmitioleic acid, oleic acid, linoleic acid and Ü-linolenic acid. Investigation, isolation and structure elucidation of the major constituents in the both plants, leaves using the ethyl acetate fractions revealed the presence of eight compounds, while the investigation of the butanol fractions results in the presence of three compounds. Estimation of the major constituents of L. carinensis and T. parviflora, leaves, pericarp and seeds, was done spectrophotometrically. The seeds of both plants showed the highest concentration of total polyphenolic compounds and tannins content, while the leaves of both plants showed the highest concentration of flavonoids content and steroids content. UPLC-QTOF-MS/MS analysis of the leaves of both plants, revealed the tentative identification of 72 and 61 compounds from L. carinensis and T. parviflora, leaves, respectively. Nutritional evaluation of both plants, pericarp and seeds revealed that the pericarp of L. carinensis and T. parviflora possess high content of total carbohydrates compared to that of the seeds while pericarp and seeds of T. parviflora showed much more protein content than that of L. carinensis. Concerning the minerals content, calcium and iron are found prominent in T. parviflora, pericarp while the highest concentration of potassium was found in L. carinensis, pericarp