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Articles by M.R. Sarmidi
Total Records ( 3 ) for M.R. Sarmidi
  N. Othman , Z.A. Manan , S.R. Wan Alwi and M.R. Sarmidi
  Carotenoids and vitamin E (tocopherols, tocotrienols) are among the 1% minor valuable components in crude palm oil (Elaeis guineensis). These components have different nutritional functions and benefits to human health. Various technologies have been developed in order to recover these components from being destroyed in commercial refining of palm oil. These include saponification, selective solvent extraction, transesterification followed by molecular distillation and further purification by adsorption using synthetic resins, silica gel and reverse phase C18 silica, adsorption chromatography and membrane technology. Even though there are different technologies, but there is one same feature which is the use of solvent. Solvent plays an important role in most of the technologies. It can be used either as a pre-extraction solvent, main solvent or co-solvent. The problem of most solvents which are used nowadays is that they possess potential fire health and environmental hazards. Due to this, legislation is increasingly restricting the use of certain solvent chemicals. Hence, selection of the most safe, environmentally friendly and cost effective solvent is very important prior to design of alternative extraction methods. Chemical molecular product design is one of the methods that are becoming more popular nowadays for finding solvent with the desired properties prior to experimental testing.
  N.A. Mohd Fauzi , M.R. Sarmidi and L.S. Chua
  The chemically complex and diverse nature of the plant metabolome require several platform technologies to profile the entire range of metabolites. An ultra-performance liquid chromatography-electrospray ionization tandem mass spectrometry (UPLC-ESI-MS/MS) technique was used to profile and identify a set of small-molecule metabolites found in heat treated whole palm oil extract. An investigation was carried out on the effect of heat treatment on the yield, quality and metabolites profile for whole palm oil extract. Palm fruits were collected, cleaned and sterilized for 0, 20, 40 and 60 min. The pulps were then stripped from the sterilized fruits and later was pressed using laboratory scale expeller. The resulting puree was centrifuged at 4000 rpm for 20 min. The result shows that there was a significantly difference between sterilization time of 0 and 40 min in yield and quality. Of all, the highest oil yield of 19.9±0.21% (w/w) was obtained at 40 min of sterilization with DOBI value of 5.95±0.08 and FFA of 1.44±0.22%. The MarkerView software version analysis of the UPLC-ESI-MS/MS preliminary experimental data demonstrated the distribution and identity of several compounds in the whole palm oil extract for 40 min sterilization and 0 min sterilization. This study have demonstrated the potential of UPLC-ESI-MS/MS to identify, characterize and profile the metabolites in heat treated whole palm oil extract for further research in developing health application of phytochemicals from palm oil.
  M.A. Hamid , M.R. Sarmidi , T.H. Mokhtar , W.R.W. Sulaiman and R.A. Aziz
  During the recent years, increased interest on the development of the Virgin Coconut Oil (VCO) has been observed. This is to maximize the benefit of the multifunctional traditionally used coconut. VCO is rich in the Medium Chain Fatty Acids (MCFAs) that have been shown to speed up the metabolism. Almost 50% of the fatty acid in virgin coconut oil is in form of lauric acid. This fatty acid has wide application as wide spectrum of antimicrobial substances against fungi, bacteria and viruses. Moreover, the fatty acid profile of coconut oil shares the similar characteristic with breast milk. The MCFAs in coconut oil are not stored in the body cells but rather processed directly in the liver where they are converted immediately into energy. The present study describes the process for VCO production through integrated wet process. The novel features of this process is the production of virgin coconut oil itself which can minimize the time, cost, energy and man power as well as can maximize the yield and improve the quality of coconut oil. The VCO obtained by this process contribute about 30-40% wt/wt of yield which is 10-20% higher than conventional method. The physical characteristics of VCO along this process shows that the VCO is colorless, retain fresh coconut aroma and sweet coconut taste with the highest content of lauric acid (49.85%). Besides that, the result also indicates the presence of vitamin E VCO. In general, the overall results for sensory analysis were acceptable in terms of aroma and taste of the product.
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