PERBANDINGAN TOTAL ALKALOID PADA DAUN PEPAYA (Carica papaya L.) AKIBAT PEREBUSAN BERSAMA DENGAN ATAU TANPA KULIT BUAH JAMBU MENTE (Anacardium occidentale L.)

The bitter of papaya’s young leaf because contine much alkaloid carpaine. The aims of research were comparing the alkaloid total of papaya’s leaf of result cooking to gether or withow seed husk of cashew nut. Isolation alkaloid papaya’s leaf by extraction methods to used principle maceration, evaporation, partition, and by phytochemical analyzed. Isolation of alkaloid from extract methanol papaya’s leaf cooking withow seed husk of cashew nut has of residue 4,2 g (18,13%). Isolated of residue was results alkaloid total (extract chlorofom II) 0,5 g (11,9%). Phytochemical analyzed of extract chloroform II by use reagen Dragendorf and Wagner has brick red sediment results. Isolated alkaloid of extract methanol from papaya’s leaf by cooking to gether seed husk of cashew nut has not residue results, phytochemical analyses of extract methanol by use reagen Dragendorf and Wagner have not brick red sediment results. The results showed that contain tannin’s seed husk of cashew nut has been precipitated the alkaloid papaya’s leaf and dissolved in water cooking

PEMANFAATAN ABU LAYANG (FLY ASH) SEBAGAI ADSORBEN PADA MINYAK JELANTAH

A research on the conducted on the use of fly ash as an adsorbent in used cooking oil. This research was conducted with the aim to know the characteristics of fly ash without activation and activation with 6M HCl and to improve the quality of used cooking oil from adsorbent processing based on the Indonesian national standard (SNI). This research was conducted in several stages, namely surface acidity with the titration method, determination of surface area with the blue methylene method, determination of functional groups by FTIR analysis and oil quality based on parameters of acid number, peroxide number and smoke point. The results showed that the acidity of the surface of the fly ash was activated and without activation of 4 and 3.6 m2 / g respectively. surface area of ​​fly ash without activation 17,480 m2/g at contact time 80 and activated fly ash 18,471 m2/g at contact time 70. FTIR spectra of fly ash without activation 795,38 and 779.95 cm-1 and activated 795.38 and 778,02 cm-1 which is a symmetrical stretching adsorption band of symmetric ≡Si-O (≡Si-O-Si≡). Fly ash used for refining used cooking oil (2,468 mg KOH / g) is able to reduce the acid number 0.361 mg KOH / g in activated fly ash and 0.561 mg KOH / g for fly ash without activation, the peroxide number for activated fly ash decreased by 72.34% compared to fly ash without activation 69.14%, oil smoke point purification results from activated fly ash 203ºC and without activation 210ºC which is close to the new oil smoke point value of 200ºC. When compared with SNI, the values ​​of acid numbers, peroxide numbers and smoke points meet the standard

Purification and Characterization of Silica Rice Husk Ash (Oryza Sative L.) From Kupang Regency

This research had been done to purify and characterize silica from rice husk ash for two varieties of rice from Kupang Regency. The purification method used is the extraction method with alkaline solution (NaOH) and precipitation with acid solution (H2SO4). The stages in this research were preparation of rice husk ash, purification of silica rice husk ash with NaOH and H2SO4 solutions, and characterization covered: determination of acidity and surface area and determination of composition using X-ray fluorescence spectrophotometer (XRF). The results of the surface acidity test showed that the highest acidity was in Ciherang silica from Tarus, which was 2.288 mmol/g. While the surface area test showed that the largest surface area was Inpari 46 silica from Pariti, which was 184.297 m2/g with an optimum contact time of 50 minutes. The results of characterization using XRF exhibited that the highest silica purity was Ciherang rice variety from Tarus, with initial silica content data, purification with NaOH and H2SO4 were 93.9%; 98.2% and 99.1%. So that the purification process with NaOH and H2SO4 is proven to increase the silica content in the sample

AKTIVITAS ANTIBAKTERI Eschericia coli PADA MINYAK ATSIRI BATANG GENOAK (Acorus calamus) ASAL PULAU TIMOR

Telah dilakukan uji aktivitas antibakteri Eschericia coli (E. coli) minyak batang genoak (Acorus calamus). Penelitian ini dilakukan melalui destilasi uap batang genoak yang diikuti analisis komposisi kimianya menggunakan GC-MS, dan uji antibakteri terhadap bakteri E. coli menggunakan metode hitung cawan. Hasil penelitian diperoleh minyak genoak dengan rendemen 0,17% dan asaron sebagai komponen utama minyak genoak sebesar 89,81%. Minyak genoak dapat menghambat pertumbuhan bakteri E. coli sebesar 95,76% pada kosentrasi 10% (v/v)