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Now showing items 21-27 of 27
Phase equilibrium studies for extraction of natural products found in essential oil (Limonene and Myrcene) from mentha spicata leaves using different solvent at pressure (0.1-11MPa) and temperature (40°C -60°C)
(Universiti Malaysia Perlis, 2010-05)
The objective of this project is to study and analyze the extraction method used to obtain data for
the peppermint oil derivatives. The method are steam distillation extraction ( used hexane
solvent and water as entrainer), ...
Computational design, synthesis and evaluation of caffeine imprinted molecular imprint polymer (MIP)
(Universiti Malaysia Perlis, 2010-05)
Caffeine is the main active ingredient in coffee where it has stimulating effect on human
by increasing mental performance and brain activities. The taste and flavor of coffee depends on
the caffeine concentration inside ...
The effects of drying temperature on total phenolic content (TPC) and Antioxidant Activities of Misai Kucing (Orthosiphon stamineus Benth) Plants
(Universiti Malaysia Perlis, 2010-06)
The modified spectrophotometric method makes use of the 2,2- diphenyl-1-
picrylhydrazyl (DPPH) radical and its specific absorbance properties. The absorbance
decreases when the radical is reduced by antioxidants. In ...
Computational modeling of acetic acid and water separation through a hybrid pervaporation-distillation process
(Universiti Malaysia Perlis, 2010-04)
Separation of acetic acid and water mixture is energy intensive and expensive due to
small difference in boiling point. Conventional method of distillation thus required large
numbers of trays and a high reflux ratio to ...
Effect of storage temperature and filtration on the shelf life of Nypa fruticans fresh sap
(Universiti Malaysia Perlis, 2010-06)
The objective of this background research is to solve the problem of lack of information
about Nira, the fresh sap of nipa palm. This research was carried out to develop a
procedure to improve the shelf life of Nira. The ...
Content of phenolic compounds and antioxidant in different parts of misai Kucing (Orthosiphon stamineus) grown under different light intensity
(Universiti Malaysia Perlis, 2010-05)
Content of phenolic compounds and antioxidant activity in different parts of misai kucing such as leaves, roots and stem has been observed when the misai kucing is treated in different light intensity. Total phenolic content ...
Determination of antioxidant compounds from the seeds of Pangium edule by solid liquid extraction method
(Universiti Malaysia Perlis, 2010-05)
The market demand of the tocopherols in the antioxidant product was relatively
high as tocopherols were proved to be the most powerful antioxidant compared others.
However, the global supply of tocopherols from the natural ...