Selected Phytochemical, Nutritional And Antioxidant Properties Of Fresh, Oven And Freeze-Dried Streblus asper Leaves

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dc.contributor.authorIbrahim, Nor Mawarti
dc.date.accessioned2019-07-15T06:38:49Z
dc.date.available2019-07-15T06:38:49Z
dc.date.issued2014-02
dc.description.abstractStreblus asper from the family Moraceae is known locally as kesinai in Malaysia. This medicinal herb is found in the northern region of peninsular Malaysia especially in Kedah and Perlis. Most studies on S. asper concentrate on the root part and stem bark. However, there is documentation on the traditional use of kesinai leaf for the treatment of urinary tract swelling, candidiasis, dysuria, diarrhoea, increase breast milk supply and as diuretic agent. In this research, phytochemical properties of S. asper leaves from various drying treatments were studied to get a suitable procedure to preserve and maintain a high quality medicinal plant without reducing its medicinal and nutritive value. The S. asper leaves were also screened for VOCs using GCMS and quantification of gallic acid and quercetin were done using HPLC. Additionally, the effects of drying and solvent used for extraction on the level of antioxidant in S. asper plant extracts were determined. This study provided preliminary data on the physicochemical, and nutritional values as well as the antioxidant properties of S. asper leaves from various drying treatments and solvent extracts. Generally, the drying treatment had significant (p < 0.05) effect on most of the chemical constituents. The result suggested that freeze drying was more efficient and is recommended to be used in preparation of this medicinal plant. The compounds identified in S. asper is mainly phytol, fatty acids, flavonoids, phenolics, alkaloids, saponin, tannins, terpenoids, cardiac glycosides, chlorophyll; S. asper also contains appreciable amounts of minerals, gallic acid and quercetin. Some of the other phytoconstituents detected in S. asper leaves were proteins, fibres, carbohydrates, palmitic acid, linoleic acid, 12,15-octadecatrien-1-ol, n-hexdecanoic acid, β-tocopherol and vitamin E.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8490
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPhytochemical properties of S. asper leavesen_US
dc.subjectfrom various drying treatmentsen_US
dc.titleSelected Phytochemical, Nutritional And Antioxidant Properties Of Fresh, Oven And Freeze-Dried Streblus asper Leavesen_US
dc.typeThesisen_US
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