Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
ABSTRAK
Asam azelat merupakan senyawa kimia yang banyak digunakan dalam dermatologi. Untuk meningkatkan efektivitas asam azelat dibentuk ke dalam vesikel transfersom. Transfersom adalah vesikel yang berkemampuan deformabilitas dan dibuat dengan metode lapis tipis. Namun transfersom memiliki kekurangan yaitu tidak stabil selama masa penyimpanan. Maka dari itu dibentuk protransfersom melalui metode freeze dry. Lioprotektan trehalosa digunakan untuk menjaga stabilitas protransfersom selama proses freeze dry. Tujuan dari penelitian ini adalah membandingkan stabilitas transfersom dan protransfersom asam azelat serta mengetahui pengaruh lioprotektan trehalosa terhadap protransfersom asam azelat. Selama masa penyimpanan 4 minggu pada suhu 4o transfersom, protransfersom dengan trehalosa, dan protransfersom tanpa trehalosa mengalami penurunan presentase efisiensi penjerapan sebesar 34,23 ; 12,19 ; 29,96 . Sedangkan pada suhu 28o masing-masing mengalami penurunan sebesar 35,36 ; 24,54 rsquo; 32,06 . Ukuran partikel transfersom dan protransfersom dengan trehalosa yang disimpan pada suhu 4o cenderung stabil. Hasil dari penelitian ini yaitu protransfersom memiliki stabilitas lebih baik dibandingkan transfersom. Penggunaan lioprotektan trehalosa memberikan stabilitas yang lebih baik pada protransfersom. Selain itu, penyimpanan pada suhu rendah dan dalam bentuk kering mampu mempertahankan stabilitas protransfersom asam azelat.

---

ABSTRACT
Azelaic acid is a chemical compound widely used in dermatology. To increase the effectiveness of azelaic acid was formed into transfersome. Transfersome is a vesicle capable of deformability which was made by thin layer method. Transfersome did not stabilized during storage, so it was formed protransfersome through freeze dry method. Lyoprotectant trehalose was used to maintain the stability of protransfersome during freeze dry process. The purposes of this research were comparing transfersome and protransfersome azelaic acid stability, and detecting the effects of trehalose lyoprotectant on protransfersome azelaic acid. During storage period at 4oC for 4 weeks, the entrapment efficiency of transfersome, protransfersome with trehalose, and protransfersome without trehalose were decreased by 34,23 12,19 29,96 respectively. On the other hand, at 28oC for 4 weeks, the percentage were decreased by 35,36 24,54 rsquo 32,06 respectively. Particle size of transfersome and protransfersome with trehalose were stable at 4oC. The result of this study shows that protransfersomes have better stability than transfersomes. Trehalose provides better stability on protransfersome azelaic acid. In addition, protransfersome stability can be mantain by storing at low temperature and dry form.

Abstrak :
Metarhizium majus UICC 295 adalah kapang entomopatogen. Penelitian bertujuan mengetahui pengaruh penambahan tepung jangkrik 10% (b/v) pada medium pertumbuhan M. majus UICC 295 terhadap kemampuan menginfeksi larva O. rhinoceros serta mengetahui pengaruh preservasi pada suhu -80o C menggunakan protektan gliserol 10% (v/v) dan gliserol 10% (v/v) dengan trehalosa 5% (b/v) terhadap viabilitas M. majus UICC 295. Konidia/hifa dari Saboraud Dextrose with Yeast Extract Agar (SDYA) dengan penambahan tepung jangkrik 10% (b/v) mampu membunuh larva 6,6--100% dalam 8--11 hari. Konidia/hifa yang dipreservasi selama 30 hari pada suhu -80o C menggunakan gliserol 10% (v/v) dan gliserol 10% (v/v) + trehalosa 5% (b/v) mengalami penurunan viabilitas. Konidia/hifa yang dipreservasi bersama kadaver larva selama 30 hari pada suhu -80o C menggunakan gliserol 10% (v/v) dan gliserol 10% (v/v) dengan trehalosa 5% (b/v) mampu dipertahankan viabilitasnya. ......Metarhizium majus UICC 295 is an entomopathogenic fungus. This research aimed to investigate the effect of 10% (w/v) cricket powder in growth medium on the pathogenicity of M. majus UICC 295 to infect O. rhinoceros larvae and to investigate the effect of freezing in -80o C using 10% (v/v) glycerol and 10% (v/v) glycerol with 5% (w/v) trehalose on its viability. The conidia/hyphae from Saboraud Dextrose Agar with Yeast Extract (SDAY) with 10% (w/v) cricket powder was able to kill larvae 6.6%--100% in 8--11 days. Viability of conidia/hyphae after being preserved for 30 days in -80o C with 10% (v/v) glycerol and 10% (v/v) glycerol with 5% (w/v) trehalose was decreased. The conidia/hyphae on cadaver was still viable after being preserved at -80o C with 10% (v/v) glycerol and 10% (v/v) glycerol with 5% (w/v) trehalose.