Shamsul Muhamad

Shamsul Muhamad
University of Malaysia, Kelantan | UMK · Faculty of Agro Based Industry

PhD in Biochemistry

About

21
Publications
8,235
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56
Citations
Additional affiliations
September 2011 - present
University of Malaysia, Kelantan
Position
  • Lecturer

Publications

Publications (21)
Article
Full-text available
The effect of boiling on antioxidant activity, total phenolic content (TPC) and total flavonoid content (TFC) in the ethanol extracts from Plectranthus amboinicus leaves were studied. The dried leaves were boiled in water for 0 (control), 30, 60, 90 and 120 minutes, then extracted with ethanol to produce ethanol extracts. The ethanol extracts were...
Article
Full-text available
ARTICLE INFO ABSTRACT Nowadays, many of antioxidants on the market, but most of the antioxidant is heat sensitive which their antioxidant capacity is decreased during processing. So, a heat stable antioxidant is important to ensure their effectiveness for neutralize the free radical in the human body. The aim of this study is to determine a presenc...
Article
Full-text available
Collagen was documented as a difficult and expensive protein to quantify due to its insoluble. It is particularly since solubility is a key functional property in a variety of applications such as healthcare and cosmetic products. The main aim of this study was to extract the collagens from the skins of commercial freshwater fish such as red tilapi...
Article
Full-text available
Metal injection molding (MIM) is capable of mass producing intricately shaped components. In recent years, this technology has been adopted in the electronic, computer, aerospace and medical industries. Titanium alloy (Ti6Al4V) is difficult to process because of its reactive nature and primarily because of problems with carbon and oxygen impurities...
Data
Purpose: To evaluate the cytotoxic activity of Hibiscus rosa sinensis against K-562 cancer cell line. Methods: The crude petroleum ether, ethyl acetate and methanol extracts of the leaf and stem of Hibiscus rosa sinensis were prepared using cold extraction method. The in vitro cytotoxic activity of the extracts (20 -100 µg/ml) was evaluated on leuk...
Article
Full-text available
Metal Injection Moulding (MIM) is an efficient method for high volume production of complex shape components from powders. The purpose of this study is to determine the sintering condition of titanium alloy (Ti6Al4V) tensile shape sample. In high temperature, Ti6Al4V will react with oxygen to form of titanium oxide (TiO2) which present a problem du...
Conference Paper
Powder Injection Molding (PIM) process has been proven to be a cost effective technique for producing small and complex parts including titanium implants. Objective: To study the influence of sintering temperature on the hardness and density of Ti-6Al-4V specimens fabricated using PIM technique. Palm oil based binder system was utilized with the PI...
Article
Metal Injection Moulding (MIM) is an efficient method for high volume production of complex shape components from powders. The purpose of this study is to determine the sintering condition of titanium alloy (Ti6Al4V) tensile shape sample. In high temperature, Ti6Al4V will react with oxygen to form of titanium oxide (TiO2) which present a problem du...
Article
Metal Injection Molding (MIM) is a cost-effective technique for producing small, complex, precision parts in high volumes. MIM consists of four main processing steps: mixing, injection molding, debinding and sintering. In the mixing step, the powder titanium alloy (Ti6Al4V) medical grade is mixed with a binder system based on palm stearin to form a...
Conference Paper
Full-text available
Gracilaria manilaensis (Gracilariales, Rhodophyta) is an edible seaweed. In this study, G. manilaensis was analyzed to determine the potential of antioxidant properties of its extracts. The extracts were prepared by soxhlet extraction using organic solvents i.e: n-hexane, dichloromethane, chloroform, ethyl acetate, acetone, methanol and absolute et...
Article
Full-text available
Vitex trifolia var.simplicifolia plant was found growing wildly at the beach, especially at Pantai Sri Tujuh, Tumpat, Kelantan, Malaysia. The extracted leaves were commonly used to prepare traditional dessert among Siamese communities in Kelantan called “Khanom Bai Kunthi” for a long time. Water was used as an extraction agent by the peoples in thi...
Article
Full-text available
The palm oil derivative, palm stearin (PS) has been formulated and evaluated as a possible alternative binder system. Palm stearin content can be an advantage during the debinding process because the components have different melting points. It is important that the removal of binder must be performed gradually to maintain the shape of the debound...
Article
Full-text available
Orthosiphon stamineus (Lamiaceae) is a medicinal plant containing several biologically active components that have chemopreventive activity. To investigate the chemopreventive properties of O. stamineus, we studied the apoptotic activity of the ethyl acetate fraction (EAF) derived from the hot water extract of O. stamineus leaves on the human hepat...
Article
Full-text available
The effects of longilactone isolated from Eurycoma longifolia Jack were studied in human breast cancer cell line MCF-7. The research aim was to investigate the possible molecular mechanism of action of longilactone on MCF-7. The SRB assay showed that longilactone exerts a strong cytotoxic activity on MCF-7 with an IC 50 of 0.53 ± 0.19 µg/ml. Hoechs...
Article
Metal Injection Molding (MIM) is a cost-effective technique for producing small, complex, precision parts in high volumes. MIM consists of four main processing steps: mixing, injection molding, debinding and sintering. In the mixing step, the powder titanium alloy (Ti6Al4V) medical grade is mixed with a binder system based on palm stearin to form a...
Conference Paper
Objective: The aim of this study was to investigate the cytotoxicity effect of polyurethane dimethacrylate monomer derived from palm oil polyol (PUDMA) and 2 experimental composite resins based on these monomer PUDMA- based composites) compared to an experimental Bis-GMA/TEGDMA-based composite and EsthetX flowable composite (Dentsply, Caulk, USA)....
Article
Binder system is one of the most important criteria for the powder injection molding (PIM) process. Failure in the selection of the binder system will affect on the final properties of the sintered parts. The objectives of this studied is to develop a novel binder system based on the local natural resources and environmental friendly binder system...
Article
Full-text available
Problem statement: Titanium alloy (Ti6Al4V) has been widely used as an implant for biomedical application. In this study, the implant had been fabricated using high technology of Powder Injection Molding (PIM) process due to the cost effective technique for producing small, complex and precision parts in high volume compared with conventional metho...
Chapter
This paper focuses on the usage of a novel binder system base on palm oil product to produce sintered parts of stainless steel 316L produced by vertical injection molding technique for biomedical application. The stainless steel 316L powder was mixed using z-blade mixer with the thermoplastic binder system comprising of polyethylene, paraffin wax,...

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Project
For survival