The Synthesis of Quinidine Salicylate Ester Compound

Quinidine a compound isolated from quinine plants, one of the species of quinine plants is (Chincona ledgereriana) From PT SIL Lembang. The purpose of this study was obtain quinidine salicylate ester through esterification reaction. In this study, the synthesis of quinidine ester compound by esterification reaction was conducted. Esterification reaction was conducted by using DCC activator and DMAP catalyst with one carboxylic acid namely salicylate acid producing new compound namely quinidine salicylate, Subsequent Quinidine salicylate was obtained in the form of oil with 97% yield. The compound obtained from the synthesis was then identified using Thin Layer Chromatography continue analyzed using with Spectrophotometer, LC-ESI-MS spectroscopy. Results show that the target compound has been successfully synthesized

Esterification of Waste Cooking Oil Using Ultrasonic: Kinetic Study

Waste cooking oil (WCO) have a great potential as an alternative raw material for producing biodiesel. The literatures kinetic of the esterification of WCO in the presence of phosphoric acid catalyst with ultrasonic assisted are rare and most literatures used conventional method. This study aims to determine the optimum condition and the parameters of first and second order kinetics of the WCO esterification which was assisted by ultrasonic bath. Variables that used in this study are methanol/oil mole ratio, acid catalyst concentration and reaction temperature. The highest conversion was 42.08% with methanol/oil mole ratio of 15:1, a catalyst (phosphoric acid) concentration of 9% wt and temperature of 50oC within 90 minutes. The reaction time was reduced to 3 times (minute) compare to conventional method and fatty acid reduced 42%. Kinetic parameters were calculated with assumption that the esterification was the irreversible reaction. The reaction rate constant increasing with temperature. The value of activation energy for esterification of WCO is 42.94 kJ/mol for first order reaction and 35.30 kJ/mol for second order reaction

Mechanical and Barrier Properties of PVP-Carbon Dot Nanocomposite Films

This research reported carbon dot were synthesized form citric acid and urea through a single step microwave process and Poly Vinyl Pirrolidone (PVP) films composited by carbon dot were prepared. The effects of different composition carbon dots  on mechanical strength of films and water vapour barrier were evaluated. Highest mechanical yielded composite film were analyzed their thermal stability. Average of carbon dot diameter was found 90.61 nm and polydispersity indice 0.396. Different composition carbon dot exhibit significant improvement in tensile strength and modulus. Water permeablity of films varieate with content of carbon dot. The presence of carbon dot had a negligible effect on Tg of film and show melting process

Management of Technology Transfer in the Traditional Tempeh and Tofu Industries

The objective is to study the screening of Rhizopus sp inoculum, the utilization of this inoculum for a solid substrate soybean fermentation, to study the trial run of peeling machine and a fluidized bed reactor for the separation of soybean skin and soybean meat, to compare a manual cotton cloth bag filter and a manual rotary filter to separate soybean slurry, to run vertical technology transfer of a manual rotary filter into small scale tofu industry according to hygiene control and education skill training . The benefit of this research is to create a new business and to absorb manpower. The method used is a preparation of Rhizopus sp inoculum for fermentation. Trial run of the peeling machine and three phase fluidized bed reactor for the production of cleaned soybean. Cleaned soybeans are delivered to the production of a cake like fermented soybean , soy milk and tofu. Vertical transfer of technology of a manual rotary filter based on technometric approaches to soy milk and tofu industries. Education skill training was attended by 60 participants. The research results can be shown that the utilization of Rhizopus oligoporus and Rhizopus oryzae inoculum for soybean fermentation into a cake like fermented soybean can be accepted by the 60 panelists and local market. The trial run of peeling machine has a capacity of 30 kg per hour, the trial of three phase fluidized bed reactor can produce cleaned soybean after the total weight of soybean skin of about 35% from the total feed. Technology transfer of a manual rotary filter to the small scale of tofu industries can increase an efficiency of 66.37% for 25 minutes is better than a manual a cotton cloth bag filter with an efficiency of 62.62% for 36 minutes in tofu industry according to the hygiene control. This manual rotary filter can be scale-up into a larger scale. Education skill training was attended by 60 participants of a low income group people in rural areas in order to show how of the know how to do something better according to the hygiene control

The Renewability Indicator and Cumulative Degree of Perfection for Gamboeng Tea; Part.2, Exergy Calculation of Tea Factory

Renewability Indicator (RI) and Cumulative Degree of Perfection (CDP) were used to observe sustainability of Gamboeng Tea. The assessment then compared with black tea process in Black Sea Region in Turkey from the previous study. Calculation of exergy for Gamboeng fresh tea leaf had already described in Part.1. Since the main process for both production was drying, then tropical humid climate in Gamboeng is the main challenge to increase efficiency, and thus, renewability. This second part described the significant improvement of renewability had applied in Gamboeng by using wood pellet in rotary pannier. Further recommended improvement were by installing better humidity detector and connected to the process control so the process can adapt the ambient change which the relative humidity can be varied from 65% and up to 92%

Antibacterial and Antioxidant activities of Indonesian ginger (jahe emprit) essential oil extracted by hydrodistillation

The rhizome of ginger is commonly used as a spice, food, beverage as well as medicine. Plant essential oils including from ginger have been widely used for food preservation, pharmaceutical and alternative medicines.  Currently there are growing interest of consumer for natural sources such as essential oils for natural antibacterial and antioxidant.  Jahe emprit (Zingiber officinale var. Amarum) is one of Indonesian ginger variety used to obtain ginger essential oil. The objective of current study was to investigate the effect of solvent to feed (SF) ratio in hydrodistillation process on yield, chemicals content, antibacterial and antioxidant activities of ginger essential oils from jahe emprit.  SF ratio used in this study is 0.7: 1, 1.7: 1, 2.7: 1.  Chemicals content was conducted using GCMS analysis.  Antibacterial assay was conducted using disc diffusion method against Escherichia coli and Staphylococcus aureus.  Antioxidant assay was conducted using DPPH free radical scavenging assay.  The results show that the highest essential oil yield was obtained from SF ratio 1.7:1 which gave yield of 3.7%.  GCMS analysis shows that camphene was always the major compound present in those 3 SF ratio, although the amount present was differed.  Besides, 4 other major compounds present were varied.  Antibacterial assay using 1% concentration showed ginger oil obtained from SF 0.7:1 and 2.7:1 have the same activities for S. aureus, whereas SF ratio 1.7:1 has the lowest activities.  However for E. coli, all SF ratio gave same results.  For antioxidant activities at 1000 ppm concentration, the highest activity was obtained from SF ratio 2.7:

The Synthesis of Cinchonine Tiglat Ester Compound and Cytotoxic Test Against MCF-7 Breast Cancer Cell

Cinchonine is a type of cinchona alkaloid compound commonly found and/or isolated from Cinchona sp. plant. It is commonly used to treat malaria, and can potentially be used against cancer cells. In this particular study, cinchonine ester derivatives were extracted through esterification processs. Synthesized esther is aimed to gain higher lipophilicity of cinchonine so that makes it easier to pass through cell membrane. Esterification was done using DCC activator as well as DMAP catalyst with tiglic acid used to create cinchonine tiglat. Subsequent cinchonine tiglat was obtained in the form of oil with 25,28% yield. The compound obtained from the synthesis was the analyzed using LC-ESI-MS and 1H-NMR spectroscopy instrumentation. Results show that the target compound has been successfully synthesized. Its cytotoxic ability against MCF-7 breast cancer cells was tested using the Alamar Blue method. Results concluded that cinchonine tiglat ester compound has a viable cytotoxic activity with IC50 value of 1.22 ppm