Mohamad Endy Yulianto

Hot compressed water extraction of curcumin from Curcuma domestica Val

As one of pharmaceutical crops, Curcuma domestica Val is widely cultivated in Indonesia. It has been reported as a source of curcumin, an active compound that exhibits a lot of pharmacological effects. Considering the health benefit offered by active compounds of Curcuma domestic a Val, many researchers are currently searching and investigating the most appropriate method of the extraction and separation techniques. Hot compressed water extraction (HCWE) is a new promising technique gained many interests from researchers for its numerous benefits. The objective of this research was to investigate the effect of parameter process on the hot compressed water extraction of Curcuma domestic a Val active constituent. Experiments were carried out at temperature of 130 to 1500C, solid liquid ratios of 1:10 to 1:12, and extraction time of 10 to 40 minutes at a fixed pressure of 2 bar. The research showed that hot compressed water extraction is proven as the potential technique for the curcumin extraction. The highest curcumin content of 32.83% was obtained from hot compressed water extraction at pressure of 2 bar, temperature of 1500C, solid liquid ratio of 1:10 and extraction time of 40 minutes.As one of pharmaceutical crops, Curcuma domestica Val is widely cultivated in Indonesia. It has been reported as a source of curcumin, an active compound that exhibits a lot of pharmacological effects. Considering the health benefit offered by active compounds of Curcuma domestic a Val, many researchers are currently searching and investigating the most appropriate method of the extraction and separation techniques. Hot compressed water extraction (HCWE) is a new promising technique gained many interests from researchers for its numerous benefits. The objective of this research was to investigate the effect of parameter process on the hot compressed water extraction of Curcuma domestic a Val active constituent. Experiments were carried out at temperature of 130 to 1500C, solid liquid ratios of 1:10 to 1:12, and extraction time of 10 to 40 minutes at a fixed pressure of 2 bar. The research showed that hot compressed water extraction is proven as the potential technique for the curcumin extraction. The high...

Preparation and characterization of oil palm shell activated carbon by alkali chemical activation method

As an excellent and versatile adsorbent, activated carbon is widely used for a number of applications on an industrial sector due to its numerous unique characteristics. Nowadays, inexpensive and effective alternatives to the existing commercial activated carbon have been a focus of many studies. Oil palm shell is one of the potential precursor materials for activated carbon production due to its high carbon content. Among the chemical activation agents commonly used in the activation process, alkaline hydroxides have recently been a great interest since the production of highly developed porosity activated carbons. In this study, oil palm activated carbon was prepared by NaOH impregnation and followed by carbonization at temperatures of 400°C and 500°C. The oil palm shell was impregnated with 1% of NaOH solution for 24 hours at room temperature. The filtration residue was then oven dried at 60°C for five hour. The dried oil palm shell was then crushed, grinded and subjected to the pyrolysis apparatus. The pyrolysis was conducted at two different temperatures, i.e. 400°C and 500°C for five hours. The activated carbon was then analyzed based on Indonesia’s industrial standard for activated carbon. The research showed that the yield of activated carbon decreases with the increasing of the carbonization temperature due to the loss of most of the volatile matter at a higher temperature. Furthermore, it showed that the moisture content, ash content, and Iod number fulfill the Indonesian Industrial Standard (SII no. 0258-79). Meanwhile, the volatile matter content and the fixed carbon content are out of the SII criteria.As an excellent and versatile adsorbent, activated carbon is widely used for a number of applications on an industrial sector due to its numerous unique characteristics. Nowadays, inexpensive and effective alternatives to the existing commercial activated carbon have been a focus of many studies. Oil palm shell is one of the potential precursor materials for activated carbon production due to its high carbon content. Among the chemical activation agents commonly used in the activation process, alkaline hydroxides have recently been a great interest since the production of highly developed porosity activated carbons. In this study, oil palm activated carbon was prepared by NaOH impregnation and followed by carbonization at temperatures of 400°C and 500°C. The oil palm shell was impregnated with 1% of NaOH solution for 24 hours at room temperature. The filtration residue was then oven dried at 60°C for five hour. The dried oil palm shell was then crushed, grinded and subjected to the pyrolysis apparatus. Th...