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INDONESIA
International Journal on Advanced Science, Engineering and Information Technology
ISSN : 20885334     EISSN : -     DOI : -
Core Subject : Science,
Arjuna Subject : -
Articles 1,312 Documents
Thermally Activated Palm Kernel Based Carbon as a Support for Edible Oil Hydrogenation Catalyst Alshaibani, Abdulmajid; Yaakob, Zahira
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.304

Abstract

Activated carbon has distinctive properties as a support for hydrogenation catalysts. Thermally activated carbon has been prepared from palm kernel shell at 1073 K and placed under nitrogen flow for 2 h. It was impregnated by palladium using toluene solution of Pd (acac)2. The Pd/C was reduced using a water solution of potassium borohydride (KBH4). The Pd-B/C was characterized by the Brunauer-Emmett-Teller surface area analysis (BET), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and inductively-coupled plasma mass spectrometry (ICP-MS). Pd-B/C was applied for sunflower oil hydrogenation at a temperature of 373 K, hydrogen pressure of 413.5 kPa and agitation of 1400 rpm for 1 h. Pd-B/C noticeably exhibited a higher overall catalyst activity in comparison to some recently published palladium catalysts.
The Characteristic Change of Shallot (Allium ascalonicum L.) During Curing Process Djali, Mohamad; Putri, Selly Harnesa
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.303

Abstract

The objectives of this research were to study changes in the characteristics of shallot (Allium ascalonicum L) during curing prosess at a temperature of 45ºC ± 0,6ºC, and RH 69% ± 0,4%. The study was consisted of 2 stages: calibration of temperature and RH in cabinet drier and Study of physical and chemical characteristics changes of red onions during curing process at selected temperatures. Research method used was experimental method with descriptive analysis followed by regression and correlation analysis. Curing time in a cabinet dryer was varied as follows; 0 hours, 32 hours, 80 hours, 92 hours, and 104 hours. Observations were conducted at curing includes tuber water content, water content of the outer shell, VRS levels, levels of total dissolved solids, tuber hardness, neck diameter, decrease weight, color of the outer shell and sensory characteristics of the bulbs, tubers neck, and outer shell. The results showed that the curing of shallot in a cabinet dryer at a temperature 45ºC ± 0,6ºC, and RH 69% ± 0,4% by adjusting the temperature controller on the cabinet dryer at position 47°C produce bulbs with a good outer skin apparance. During curing process, quality of the onion bulb was improved as indicated by increased the size of the bulb diameter, tubers hardness, levels of dissolved solids, the intensity of red color at tuber skin, levels of VRS, with a reduction in root neck diameter, and decrease water content of the outer shell. This condition was marked also by dry out the outer shell and neck bulbs. Onion dried in a cabinet dryer at a temperature of 44.5 ± 0.6 ° C and RH 59.8 ± 0.8% for 92 hours produced tubers with the best quality during curing. Characteristics of the tuber for this treatment are : water content 79.92% V / B; water content of the outer shell 56.80% V / B; neck diameter of tuber 2:21 mm; tubers hardness 3.60 Kg / m2; tuber diameter 36.49 mm; levels of dissolved solids 19:44%; Sucrose, red color intensity of tuber skin (a *) 29.28, VRS 33.65 μgrek / g; decreasing weight of 14.23 % wb; and are characterized by dried out the outer shell and neck bulbs.
A Preliminary Study on Gum Arabic as a Binder in Preparation of Starch Based Edible Plastic A. Apandi, N. Ayuni; A. Razak, N. A.Salfarina; Masri, Mustika; Yusoff, S.F.; Lazim, Azwan Mat
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.301

Abstract

This research emphasizes on synthesizing edible plastic using a one pot method by adding starch, gum Arabic as theb binder and sugar (sorbitol and glycerol). In order to get the right composition, the ratio of each ingredient was varied. The FTIR spectroscopy was used to characterize the structure and composition of the sample produced.
Plywood Industry by Using Eco-efficiency Approach and LIA- Wood Balance Sheet Program Nurendah, Yulia; Said, E. Gumbira; Fauzi, A. Miftah; Coto, Zahrial; Romli, M.; Hartrisari, Hartrisari
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.302

Abstract

The general purposes of this study were to improve the efficiency of wood utilization and to create wood’s value added for plywood industry. To achieve the above purposes a strategy for Agro forestry Industry should be develop based on eco-efficiencyprinciples. The details of targets were: (1). to analyze critical factors in plywood industry management regarding to eco-efficiency implementation, (2) to analyze production technology that is used in plywood industry, and (3). to design a developing strategy of integrated plywood industry based on eco-efficiency principles. The result of this study show that the key factors for plywood management’s policy was environmental awareness; material utilization; and international issues. The production technology of all plywood industry in Indonesia is relatively similar. They are using the machineries of the 80’s and have the similar working procedures. The kinds of wood wastes generated from plywood industry were classified into log end, reject log end, green veneer waste, and others. The wood waste was calculated 49.52% released from 100% input log in plywood industry. There are three strategy of integrated plywood industry based on eco-efficiency, namely (1) selecting and managing of environmental impact, showing three kinds of waste which affect the environment (2) Improvement the plywood manufacturing technology, showing the newinnovation technology or process control management and (3) Development of new product from wood waste. Wood waste can be used to produce block board, laminated board, handicraft, and others.
Ethylenediammonium-Dicarboxylate Salts and Co-Crystallization for Biological and Pharmaceutical Applications M. Yamin, Bohari; Narimani, Leila; Ibrahim, Nazlina
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.300

Abstract

Several ammonium type salts and co-crystals have been used in drug formulations to increase or decrease solubility, to improve stability, toxicity and also reducing the hygroscopicity of the products. Basically, a wide range of chemically diverse acidsand bases with different pKa, solubilities , molecular weight and other properties have been used for the purpose for a very long timein both drug and food formulations. In the present study, six ethylenediamminium salts containing thiocyanate and the anion derivedfrom diprotic acids namely oxalic (I), adipic (2), fumaric(3), succinic (4), azelaic (5) and sebacic (6) respectively, have been synthesized and characterized including their molecular structures. The difference in the pKa values of the acids unable the salt formation to be generalized. The molar conductivities of the salts are between 218 and 453 ohm-1cm2mol-1 with maximum value of 453 for salt (I). All the salts showed low activity against some selected bacteria and fungi and low toxicity against vero cell. The molecular structure of the salts will be presented and the biological activity will be compared with other ammonium salts.
Ultrasound Assisted Extraction of Oleoresin from Nutmeg (Myristia Fragrans Houtt) Sofyana, Sofyana; Supardan, M. Dani; Zuhra, Zuhra; Maulida, Cut Ayu; Haura, Ulfa
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 4 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.4.298

Abstract

In the present study, the application of ultrasound to extract oleoresin from nutmeg (Myristica fragrans Houtt) was investigated. The extraction of oleoresin from nutmeg meat was performed by using ethanol as solvent. Experiments were carried out under the following conditions: total weight of nutmeg meat of 200 g, the mass ratio of dry meat nutmeg to solvent of 1:4, the size of the material of -10+18 mesh and the ultrasonic frequency of 45 kHz; with variation of extraction temperature (30, 40 and 50°C), and extraction time (1, 2 and 3 hours). This research was also using maceration and soxhlet for comparison. The experimental results showed that the Soxhlet method requires a longer time and higher temperature to produce oleoresin compared with maceration and ultrasonic waves assisted extraction methods. The ultrasonic extraction resulted highest oleoresin yield of 6.2% was obtained at the condition of 50oC and 3 hours of extraction temperature and extraction time, respectively. The oleoresin produced in the experimentwas analyzed by gas chromatography-mass spectrometry (GC-MS), which showed that the two largest components in oleoresin are myristicin and eugenol.
Consumer Behavior on The Choice of Typical Regional Food Products Based on External and Internal Factors, Perception, Attitude and Consumer Preference Gemina, Dwi; Andari, Titiek Tjahya; Kusuma, Indra Cahya
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.299

Abstract

Consumer behavior will determine their decision making in the buying process. The approach to the decision making process that gives a specific description on the reason why consumers behave in certain ways was conducted by: 1) formulating structural variables that affect external and internal factors towards perception; 2) formulating structural variables of perception towards attitude and preference; 3) formulating structural variables of attitude and preference towards consumer behavior on typical food products of Bandung and Cianjur. The survey research method and form of research were verification, while the sampling method conducted was the simple random sampling by distributing questionnaires to 100 respondents. The data quality testing performed were the validity test and the reliability test. For the path analysis research model, data transformation from ordinal to interval was previously conducted using the method of successive interval. Results of the study revealed that consumer external and internal environmental factors together have a positive effect towards consumer perception. The effect of consumer external environmental factors are greater than the consumer internal environmental factors towards consumer perception. The more mature consumers are, either from the aspect of their way of thinking or educative factors obtained from education and insight, the more developed are their perception towards food products. Consumer perception has a positive effect towards consumer attitude and preference. The variable of consumer attitude and preference has a positive effect towards consumer behavior in consuming typical regional food products.
Synthesis, Structural and Antioxidant Properties of C-p-methoxyphenylcalix[4]resorcinarene Hasbullah, Aishah; M.Abosadiya, Hamza.; Jumina, Jumina; M.Tahir, M.Ibrahim; Yamin, Bohari M
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 2 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.2.297

Abstract

The structure of Calix[4]resorcinarene is less reported compare to other calixarene derivatives because of its conformational flexibility and stability when exposed to air. The presence of solvent molecules is important for its stability in the solid state. On the other hand, the presence of several phenol groups make it a good candidate for antioxidant study. Some of them have also shown good antibacterial activity. p-methoxyphenyl calix[4]resorcinarene was synthesized and characterized by infrared and (1H , 13C) NMR spectroscopic techniques. After several attempts suitable crystals were obtained and with the help of a special oil an X-ray investigation was carried out at low temperature. The calix crystallized in triclinic system with space group Pī, a= 10.6958(5), b=13.5781(7), c=16,3334(8)Å, α=68.284 (4), β= 74.275(5). γ=82.589(5)⁰, Z=2 and V= 2121.15(8)Å3. The compound exhibits chair conformation with two resorcinol groups in anti-parallel position. The conformation is supported by eight DMSO and two DMF solvated molecules. It has a moderate antioxidant property.
Sago’s Role as Food Stock in 21th Century Ahmad, Marliati
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 4 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.4.296

Abstract

Nowadays, Indonesia plays main role as the biggest sago fluor producer in the world. However the utilization of this food stock is relatively low. The sago fluor shows potential application in huge quantity as a food stock to contribute in a food security program. Currently, this sago fluor may be processed simply to become a noodle, vermicelli or sohun products. In the future development the sago fluor products should be improved in more varieties to become processed food to complement current staple food.
Metabolism Energy, Nitrogen Retention, and Mineral Retention of Phosphorus Calcium and Zinc of Sugarcane Juice in Broilers Widjaja, Ermin; Toharmat T, Toharmat T; AD, Santosa; Sumiati, Sumiati; M, Ridla
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 4 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18517/ijaseit.3.4.295

Abstract

Poultry feed derived from grains has an anti-nutrient phytic acid. Naturally, phytate forms a complex bond with some minerals (P, Zn, Fe, Mg, and Ca), protein, and amino acids. The mineral-phytate complex cannot be absorbed by the small intestine of non-ruminant livestock and will adversely affect the availability of minerals in the ration. One way to improve the efficiency of mineral and protein utilization from phytate is using phytase. Sugarcane juice containing nutrients and phytase is very potential as liquid supplement for broiler chickens as it can hydrolyze phytic acid. The purpose of this study was to determine the retention of nitrogen, metabolism energy, and retention of minerals (P, Ca and Zn) of sugarcane juice in broilers. The study was conducted for 7 days using metabolism cages for 28 broilers of 5 weeks old with 6 treatments of 4 replications, 4 for endogenous. The results showed that the administration of 2.5%/kg sugarcane juice in the ration as well as in 2.5%/liter sugarcane juice in drinking water could provide the same result as giving commercial phytase 250-500 FTU/kg on the retention of nitrogen, metabolizeable energy, and retention of minerals P, Ca and Zn.

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