Hasil Pencarian  ::  Simpan CSV :: Kembali

"Bakteri SM1_7 diketahui mampu mendegradasi senyawa hidrokarbon di dalam medium Bushnell-Haas dengan minyak diesel 1 v/v. Potensi bakteri SM1_7 diuji kembali dengan meningkatkan konsentrasi minyak diesel di dalam medium Bushnell-Haas. Penelitian ini bertujuan untuk mempelajari kemampuan degradasi senyawa hidrokarbon isolat bakteri SM1_7 dalam medium Bushnell-Haas yang ditambahkan minyak diesel 2 v/v. Pengukuran pertumbuhan bakteri dilakukan dengan metode total plate count dan analisis senyawa hidrokarbon menggunakan GC/MS. Hasil pengukuran pertumbuhan menunjukkan bahwa bakteri mampu tumbuh pada medium Bushnell-Haas dengan minyak diesel 2 v/v. Jumlah koloni bakteri SM1_7 meningkat dari 2,59 x 106 CFU/mL menjadi 8,66 x 108 CFU/mL setelah inkubasi 48 jam. Hasil analisis GC/MS menunjukkan bahwa terjadi degradasi senyawa alkana rantai lurus undecane sebesar 81,041, senyawa dodecane sebesar 37,180, dan senyawa tridecane sebesar 17,047.

---

Bacterial Isolate SM1 7 has been shown to degrade hydrocarbons in Bushnell Haas with 1 diesel oil v v . The potential of bacteria isolate SM1 7 is reexamined by increasing concentration of hydrocarbon. The objective of this research is to observe the capability of bacteria isolate SM1 7 to degrade 2 diesel oil v v. Growth measurement was performed using total plate count method and analysis of hydrocarbon was carried out using GC MS.

Results of growth measurements show that the bacterial isolate is capable of growing in Bushnell Haas medium with 2 diesel oil v v . The total number of bacteria increased from 2,59 x 106 CFU mL to 8,66 x 108 CFU mL after incubation period of 48 hours. Results of GC MS analysis show a decrease of linear alkane chain undecane 81,041, dodecane 37,18, and tridecane 17.047."

"Isolat bakteri SM 1_7 merupakan mikroorganisme yang diisolasi dari habitat mangrove dan memiliki kemampuan untuk memanfaatkan hidrokarbon sebagai sumber energi. Penelitian sebelumnya menguji kemampuan bakteri SM 1_7 pada konsentrasi hidrokarbon 1 . Potensi kemampuan biodegradasi isolat bakteri SM 1_7 perlu diuji kembali dengan meningkatkan konsentrasi senyawa hidrokarbon. Penelitian ini bertujuan untuk menganalisis kemampuan biodegradasi isolat bakteri SM 1_7 pada konsentrasi minyak diesel 1,5 . Pengukuran pertumbuhan isolat bakteri SM 1_7 dilakukan menggunakan metode Total Plate Count TPC dan analisis degradasi senyawa hidrokarbon menggunakan metode GC/MS. Hasil pengukuran pertumbuhan menunjukkan bahwa isolat SM 1_7 mengalami peningkatan jumlah koloni dari 9,38 x 105 CFU/mL pada jam ke-0 menjadi 9,28 x 108 CFU/mL setelah inkubasi 48 jam. Hasil analisis biodegradasi senyawa hidrokarbon menunjukkan bahwa isolat SM 1_7 mampu mendegradasi beberapa senyawa alkana dengan panjang rantai karbon C12--C23, yaitu Dodecane 49,997 , tridecane 49,603 , tetradecane 13,880 , pentadecane 34,323 , hexadecane 9,247 , heptadecane 33,683 , heneicosane 61,143 , tricosane 51,453 , dan senyawa asam lemak hexadecanoic acid 75,467 dan octadecanoic acid 82,630.

---

Bacterial isolate SM 1 7 was isolated from mangrove habitat and has the capability to utilize hydrocarbons as a carbon source. Previous research examined the capability of bacterial isolate SM 1 7 to degrade 1 v v hydrocarbon. The biodegradation potential of hydrocarbons from bacterial isolate SM 1 7 needs to be re examined by increasing the concentration of hydrocarbon. The objective of this research is to analyze the hydrocarbon degrading capabilities of bacteria isolate SM 1 7 in 1,5 v v diesel oil. Growth measurement of SM 1 7 bacterial isolate was performed using Total Plate Count TPC method, and analysis of hydrocarbon degradation was carried out by GC MS.

The growth measurements show that the total number of bacteria increased from 9,38 x 105 CFU mL to 9,28 x 108 CFU mL after 48 hours incubation. Analysis of hydrocarbon compounds showed that bacteria isolate SM 1 7 is capable of degrading alkane hydrocarbon compounds with carbon chain length C12 C23, namely Dodecane 49,997 , tridecane 49,603 , tetradecane 13,880 , pentadecane 34,323 , hexadecane 9,247 , heptadecane 33,683 , heneicosane 61,143 , tricosane 51,453 , and fatty acid compounds hexadecanoic acid 75,467 and octadecanoic acid 82,63."

"Naftalena merupakan senyawa hidrokarbon yang bersifat karsinogenik dan berbahaya bagi makhluk hidup. Pencemaran naftalena dapat diremediasi menggunakan bakteri hidrokarbonoklastik. Penelitian ini dilakukan untuk menguji kemampuan Pseudomonas sp. SM 1_7 dalam mendegradasi senyawa naftalena. Pseudomonas sp. SM 1_7 diinkubasi dalam medium Bushnell-Haas yang ditambahkan naftalena 0,02 % dan yeast extract 0,5%. Pertumbuhan bakteri diukur menggunakan Total Plate Count (TPC) dan spektrofotometri. Pertumbuhan diukur pada periode inkubasi 0 jam, 24 jam, dan 48 jam. Konsentrasi senyawa naftalena diukur menggunakan HPLC setelah inkubasi 48 jam. Hasil penelitian menunjukkan bahwa selama 24 jam inkubasi, jumlah bakteri meningkat dari 5 x 108 CFU/mL menjadi 7,1 x 108 FU/mL pada batch pertama, 4,2 x 108 CFU/mL menjadi 5,3 x 109 CFU/mL pada batch kedua, dan 4,1 x 108 CFU/mL menjadi 5,9 x 108 CFU/mL pada batch ketiga. Penurunan jumlah sel terjadi setelah inkubasi 48 jam menjadi 2,4 x 107 CFU/mL pada batch pertama, 3,4 x 109 CFU/mL pada batch kedua, dan 2,3 x 108 CFU/mL pada batch ketiga. Konsentrasi naftalena berkurang sebanyak 43,65% setelah inkubasi 48 jam. Pseudomonas sp. SM 1_7 memiliki kemampuan dalam mendegradasi naftalena.

---

Naphthalene is a hydrocarbon compound that is carcinogenic and harmful to living organisms. Hydrocarbonoclastic bacteria can be used in naphtalene remediation. This study will examine the biodegradation of naphthalene by Pseudomonas sp. SM 1_7 grown in Bushnell-Haas medium with the addition of 0.02% (w/v) naphthalene and 0.5% (w/v) yeast extract for 48 hours. Bacterial growth is measured by Total Plate Count (TPC) and spectrophotometry. Naphthalene concentration in the medium after 48 hours was measured using HPLC. The results showed that after 24 hours of incubation, the number of bacteria increased from 5 x 108 CFU/mL to 7.1 x 108 FU/mL in the first batch, 4.2 x 108 CFU/mL to 5.3 x 109 CFU/mL in the second batch, and 4.1 x 108 CFU/mL to 5.9 x 108 CFU/mL in the third batch. Number of cells decreased after 48 hours of incubation to 2.4 x 107 CFU/mL in the first batch, 3.4 x 109 CFU/mL in the second batch, and 2.3 x 108 CFU/mL in the third batch. The concentration of naphthalene in the medium after 48 hours decreased by 43.65%. Pseudomonas sp. SM 1_7 has the capability to degrade naphthalene."

"Warna gelap pada bibir disebabkan oleh adanya paparan oksidan yang dapat diatasi dengan senyawa antioksidan. Xanton merupakan senyawa yang mempunyai aktivitas antioksidan yang sangat kuat. Namun, xanton bersifat semi-hidrofilik dengan log P 3,39, yang membuat xanton sulit untuk bercampur dengan basis lipstik yang bersifat lipofilik. Oleh karena itu, xanton dibuat dalam bentuk transfersom agar dapat bercampur dengan basis lipstik serta dapat mencapai lapisan dermis bibir sehingga mampu mengatasi masalah kerusakan bibir akibat bahan-bahan pengoksida. Transfersom xanton dibuat menggunakan fosfatidilkolin dengan tiga surfaktan non-ionik, yaitu Span 20, Span 60, dan Span 80 dengan metode hidrasi lapis tipis. Transfersom xanton menggunakan span 20 menghasilkan indeks deformabilitas 47,04 dengan efisiensi penjerapan xanton sebesar 89,90 %. Pada penggunaan span 60, dihasilkan indeks deformabilitas 23,19 dengan efisiensi penjerapan 63.84 % dan pada span 80 dihasilkan indeks deformabilitas 25,98 dan efisiensi penjerapan 74.80 %. Transfersom xanton dengan span 20 yang menghasilkan jerapan terbesar serta karakterisasi yang terbaik, diformulasikan ke dalam lipstik dan dibandingkan dengan lipstik yang mengandung xanton serbuk. Lipstik transfersom yang dihasilkan memiliki kekerasan senilai 65 (1/10 nm) dengan suhu lebur 53,8 °C, bersifat tidak iritatif, dan memberikan polesan yang homogen dengan warna merah muda.

---

The dark color in lips is caused by exposure to oxidants that can be overcome by antioxidant compounds. Xanthone has strong antioxidant activity. However, xanthone as semi-hydrophilic compound with log P value is 3,39, is difficult to mix with lipstick bases which are lipophilic. Therefore, xanthone made in the form of transfersome to be mixed with lipstick bases and also reach the lips dermis layer so that it can overcome the problem of lips damage as a result of oxidizing materials. Transfersomal xanthone made using phosphatidylcholine with three non-ionic surfactants, Span 20, Span 60, and Span 80 with a thin layer hidration method. Transfersomal xanthone using span 20 produces deformability index 47,04 and entrapment efficiency 89,90 %. On the use of span 60, resulting deformability index 23,19 and entrapment efficiency 63.84 % while on the use of span 80 shown deformability index 25,98 and entrapment efficiency 74.80 %. Transfersomal xanthone using span 20 which generate the highest entrapment efficiency and the best characterization, is formulated into a lipstick and compared with lipstick that contains xanthone powder. The transfersomal lipstick has rigidness 65 (1/10 nm) with melting point temperature 53,8 °C, non-irritative, and provide a pink homogeneous polish texture."

"Abstract:Robert Langdon, Harvard professor of symbology and religious iconology, arrives at the Guggenheim Museum Bilbao to attend the unveiling of a discovery that "will change the face of science forever". The evening's host is his friend and former student, Edmond Kirsch, a forty-year-old tech magnate whose dazzling inventions and audacious predictions have made him a controversial figure around the world. This evening is to be no exception: he claims he will reveal an astonishing scientific breakthrough to challenge the fundamentals of human existence. But Langdon and several hundred other guests are left reeling when the meticulously orchestrated evening is blown apart before Kirsch's precious discovery can be revealed. With his life under threat, Langdon is forced into a desperate bid to escape, along with the museum's director, Ambra Vidal. Together they flee to Barcelona on a perilous quest to locate a cryptic password that will unlock Kirsch's secret."

"Abstract:"Saman is a story filtered through the lives of its feisty female protagonists and the enigmatic "hero" Saman. It is at once an expose of the oppression of the plantation workers in South Sumatra, a lyrical quest to understand the place of religion and spirituality in contemporary lives, a playful exploration of female sexuality and a story about love in all its guises, while touching on all of Indonesia's taboos, extramarital sex, political repression and the relationship between Christians and Muslims"