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Journal : Jurnal Sains dan Teknologi Farmasi

UJI BIODEGRADASI FILEM PLASTIK CAMPURAN POLISTIREN DENGAN POLI(3 HIDROKSIBUTIRAT-KO-3-HIDROKSIVALERAT) DALAM LUMPUR Dewi, Asiska Permata; Octaviani, Melzi; Rustini, Rustini; Zaini, Erizal; Djamaan, Akmal
Jurnal Sains dan Teknologi Farmasi Vol 17, No 1 (2012)
Publisher : Universitas Andalas

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Abstract

An assay of biodegradation of plastic film combination of polystyrene (PS) and poli (3-hydroxy butyrate-ko-3-hydroxyvalerate) [P(3HB-ko-3HV)] has been conducted. The assay was done by using soil burial test method. The plastic film was made by blending technique of various composition of PS/P(3HB-ko-3HV) in to the mud. The remaining weight of plastic film was determined gravimentically time intervals 1,2,3,4 and 5 weeks of burial. Result showed that the P(3HB-ko-3HV) had an influence on the degradation rate of plastic film. The biodegradation rate increased with an increase in P(3HB-ko-3HV) content in the mixture. The rate was derived from linear regression equation and parameters such as biodegradation rate constant (k), t 50 % and t 95% were obtained. It was found that for combination of  PS/P(3HB-ko-3HV) 95:5 k= 1,26% b/b per week , t 50 % = 39,07 weeks and t 95 % = 74,783 week for the mixture of PS/P(3HB-ko-3HV) 90:10  k = 1,604 % b/b per week, t 50 % = 30,57 week and t 95 % = 58,62 week. For the mixture of PS/P(3HB-ko-3HV), 85:15 k = 2,663 % b/b per week, t 50 % = 17,95 week and t 95 % = 34,85 week. While those of pure PS plastic film k = 0,24 % b/b per week, t 50 % = 201,85 week and t 95 % = 354,55 week which indicated a very slow biodegradation. Analysis by SEM showed that the surface of plastic film was eroded and damaged during the burial. The amount of bacterial colony per 1 gram of mud was 2,31x107.
Optimasi Proses Produksi Bioplastik Poli (3-Hidroksibutirat) dengan Bakteri Bacillus Sp Faac 20801 Menggunakan Bahan Dasar Jerami Padi Secara Fermentasi Krisyanella, Krisyanella; Djamaan, Akmal; Aulia, Witra
Jurnal Sains dan Teknologi Farmasi Vol 17 No 1 (2012)
Publisher : Fakultas Farmasi Universitas Andalas

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Abstract

Optimization of a production of a bioplastic poly (3 - hidroxybutirat) (P(3HB) by fermentation using Bacillus sp FAAC 20801 bacteria and rice straw as carbon source has been carried out. Detection of P(3HB) was done using gas chromatography. The highest glucose level obtain by using H2SO4 5% for hydrolisis. 46,800 mg straw (glucose concentration 200 mg/ml) were obtained 5,379 mg biomass and 0.058 mg P(3HB) ; from 83,400 mg rice straw (glucose concentration 400 mg/ml) were obtained 5,011 mg biomass and 0.124 mg P(3HB) ; from 142,800 mg rice straw (glucose concentration 600 mg/ml) were obtained 3,992 mg biomass and 2.309 mg P(3HB). 
Kajian Biodegradasi Filem Plastik Campuran Polimer Sintetik dengan Biopolimer dalam Larutan Air Octaviani, Melzi; Dewi, Asiska Permata; Boestari, Agusri; Zaini, Erizal; Djamaan, Akmal
Jurnal Sains dan Teknologi Farmasi Vol 17 No 1 (2012)
Publisher : Fakultas Farmasi Universitas Andalas

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Abstract

A study on degradation of plastic film of the mixture of polystyrene sintetic polymers (PS) with poli(3-hidroxyibutirat) [P(3HB)] dan poli(3-hidroksibutirat-ko-3-hidroxyvalerat) [P(3HB-ko-3HV)] biopolymers in-vitro and in-vivo has been done. The assay was done by immersion test method in aquadest, river water at various pH of 4,6,8, and 10 respectively. Degradation rate was determined by linear regression with parameters including : t 50%, t 95% and rate constant (k). Degradation rate of plastic film of 1 PS/P(3HB) 95:5 at pH 6 was the fastest with k = 0,79 % week, t 50 % = 63,06 week and t 95 % = 119,84 week, followed by PS/P(3HB) 90 : 10 with k = 1,22 % / week, t 50 % = 41,25 week and t 95 % = 78,21 week and PS/P(3HB) 80 : 20 with k = 3,16 % week, t 50 % = 15,81 week and t 95 % = 30,05 week while pure PS plastic film (100 : 0 ) did not degraded at all. The degradation rate of a mixture of plastic film in river water, PS/P(3HB-ko-3HV) 95:5 showed k= 0,64 % week, t 50 % = 82,63 week and t 95 % = 157,17 week, PS/P(3HB-ko-3HV) 90:10 with k = 0,69 % week, t 50 % = 72,16 week and t 95 % = 137,4 week ; PS/P(3HB-ko-3HV) 85:15 with k = 0,74 %/week, t 50% = 66,79 week and t 95% = 127,32 week, while the pure PS plastic film (100:0) did not degrade.
Analisis Faktor-Faktor Yang Mempengaruhi Kepuasan Kerja Apoteker Yang Bekerja di Apotek di Kota Padang Djamaan, Akmal; Syahrul, Laura; Bakhtra, Dwi Dinni Aulia
Jurnal Sains dan Teknologi Farmasi Vol 18 No 1 (2013)
Publisher : Fakultas Farmasi Universitas Andalas

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Abstract

Humans resources must be evaluated as a key factor in an organizations success. Humans resource organization has a wide range of needs. Job satisfaction is a reflection of the employees attitude towards the overall feeling of the work, it consists of various aspects. Job satisfaction can improve service quality and increase employee satisfaction. This was a descriptive study about pharmacists who work at a pharmacy in Padang city as much as 50 respondent. There are six variables that influence job satisfaction of pharmacists: working conditions, salary, promotion, fair treatment, job security, relationships with co-workers and the relationship with the leader. Results showed that the pharmacists working at pharmacies in Padang was just quite satisfied with the work. There was a variable relationship between co-workers and the job satisfaction of the respondents in the amount of 76.32%. Total achievements of the respondents to the relationship with the fair treatment of 75.76 %, 75.68% working conditions, relations with the leaders of 73.92%, 72.79% salary and promotion. Variables of job security less the total respondents 59.80% achievement . Differences in demographic factors also affect the job satisfaction of the respondents. Job satisfaction of male respondents are influenced by working conditions, while the female respondents are affected by fair treatment and relationships with co-workers. Respondents who have a service life over 5 years shows that work satisfaction is strongly influenced by the variable of fair treatment while his tenure of 1 to 5 years are affected by working conditions. Respondents who have over 30 years of age are affected by work satisfaction and working conditions for the age 24 to 30 years of work satisfaction is strongly influenced by fair treatment.
Uji Biodegradasi Filem Plastik Campuran Polistiren dengan Poli(3 Hidroksibutirat-Ko-3-Hidroksivalerat) dalam Lumpur Dewi, Asiska Permata; Octaviani, Melzi; Rustini, Rustini; Zaini, Erizal; Djamaan, Akmal
Jurnal Sains dan Teknologi Farmasi Vol 17 No 1 (2012)
Publisher : Fakultas Farmasi Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

An assay of biodegradation of plastic film combination of polystyrene (PS) and poli (3-hydroxy butyrate-ko-3-hydroxyvalerate) [P(3HB-ko-3HV)] has been conducted. The assay was done by using soil burial test method. The plastic film was made by blending technique of various composition of PS/P(3HB-ko-3HV) in to the mud. The remaining weight of plastic film was determined gravimentically time intervals 1,2,3,4 and 5 weeks of burial. Result showed that the P(3HB-ko-3HV) had an influence on the degradation rate of plastic film. The biodegradation rate increased with an increase in P(3HB-ko-3HV) content in the mixture. The rate was derived from linear regression equation and parameters such as biodegradation rate constant (k), t 50 % and t 95% were obtained. It was found that for combination of  PS/P(3HB-ko-3HV) 95:5 k= 1,26% b/b per week , t 50 % = 39,07 weeks and t 95 % = 74,783 week for the mixture of PS/P(3HB-ko-3HV) 90:10  k = 1,604 % b/b per week, t 50 % = 30,57 week and t 95 % = 58,62 week. For the mixture of PS/P(3HB-ko-3HV), 85:15 k = 2,663 % b/b per week, t 50 % = 17,95 week and t 95 % = 34,85 week. While those of pure PS plastic film k = 0,24 % b/b per week, t 50 % = 201,85 week and t 95 % = 354,55 week which indicated a very slow biodegradation. Analysis by SEM showed that the surface of plastic film was eroded and damaged during the burial. The amount of bacterial colony per 1 gram of mud was 2,31x107.