Judul: Analisis wilayah rawan kekeringan untuk pengembangan sistem usaha pertanian padigogo di Propinsi Sulawesi Tenggara
Abstrak: Penelitian ini merupakan kajian untuk menganalisis wilayah rawan kekeringan berdasarkan ketersediaan air untuk penanaman padi goo. Kemajuan teknologi informasi dan dukungan perangkat lunak dan keras komputer akan mempermudah penyusunana dan analisis wilayah rawan kekeringan secara numerik maupun spasial. Tujuan penelitian ini adalah (1) Mengidentifikasi sebaran peluang deret hari kering/kejadian hujan di Sulawesi Tenggara; (2) Menyusun peta wilayah rawan kekeringan Sulawesi Tenggara berdasarkan karakteristik sebaran peluang deret hari kering/kejadian hujan, indeks rawan kekeringan, indeks kekeringan Palmer dan sifat fisik tanah; dan (3) Menyusun alternatif musim dan pola tanam berdasarkan analisis neraca air, karakteristik kekeringa n dan analisis kinerja tanaman padi pada masing-masing wilayah rawan kekeringan.
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Judul: Deliniasi Wilayah Pioritas Penangan Rawan Kekeringan Di Lahan Pertanian (Studi Kasus: Sulawesi Selatan)
Abstrak: Drought in the agricultural land might be happened because of the late wet season, it’s cause inappropriate cropping pattern. Delineation of vulnerability drought areas must be done to anticipate crop failure areas. Drought vulnerability areas analize by three different aspects: climatological, hydrological and agronomical. Each aspects has role in the water availability for agriculture land. Approachment of climatological aspect, drought vulnerability areas showed by the sensitivity level of rainfall towards sea surface temperature (SST) anomalies in the Nino-3.4 region. The rainfall is divided in three period: wet season (MH) at November-February, first dry season (MK-1) at March-June and second dry season (MK-2) at July-October. The correlation between rainfall anpmalies and SST anomalies specify three different areas: high sensitive areas, low sensitive areas and non-significant areas. Significant areas is the regions where rainfall has correlation toward sea surface temperature anomaly where the regression produce P-value ≤ 0.05. Approachment of hydrological aspect, drought vulnerability areas determined by the density of stream pattern. In agronomy aspect, drought areas is determined from the type of agricultural land use. The integration of these three aspects result distribution of drought level areas in agriculture field, specifically rice-field. Results of the climatological aspect analysis shows that the drought areas more often in the west and south Sulawesi Selatan. While on the agronomy aspect, drought areas are dominated by rainfed lands and moor lands that spreads all over province.
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Judul: Peptides Hydrolysate Derived from Collagen of Snakehead Murrel (Channa striata) Skin Demonstrate Anti-oxidant and Anti-cholesterol Activities.
Abstrak: Anti-cholesterol and anti-oxidant play crucial role to combat cardiovascular disease (CVD) related to formation of arterial plagues from oxidation of cholesterol. In the past decades, research on bioactive peptides demonstrating anti-cholesterol and anti-oxidant activities have been reported as the alternative drugs. In this study, acid soluble collagen was extracted from the skin of snakehead murrel and employed to induce production of collagenase by Bacillus licheniformis F11.4. The collagenases secreted were in turn purified through AKTA Purifier (ion exchange, DEAE column) and used to produce peptides hydrolysate. The purified enzymes were grouped in two distinct collagenase fractions, designated as fraction D and F. Peptides hydrolysate produced by the fraction D was found to demonstrate HMG-CoA inhibitor activity comparable to pravastatin and limited anti-oxidant activity. Meanwhile, peptides hydrolysate generated using the fraction F demonstrated anti-oxidant activity comparable to BHT (2mM), vitamin C (2mM) and vitamin E (2mM), but limited HMG-CoA activity. Combination of the fraction D and F resulted in substantial HMG-CoA inhibition and anti-oxidant activities.
Keyword: Anti-cholesterol, anti-oxidant, bioactive peptide, collagen, collagenase, snakehead murrel