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Jurnal Bioteknologi & Biosains Indonesia (JBBI)
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : 24422606     EISSN : 2548611X     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
JBBI, Indonesian Journal of Biotechnology & Bioscience, is published twice annually and provide scientific publication medium for researchers, engineers, practitioners, academicians, and observers in the field related to biotechnology and bioscience. This journal accepts original papers, review articles, case studies, and short communications. The articles published are peer-reviewed by no less than two referees and cover various biotechnology subjects related to the field of agriculture, industry, health, environment, as well as life sciences in general. Initiated at the then Biotech Centre, the journal is published by the Laboratory for Biotechnology, the Agency for the Assessment and Application of Technology, BPPT.
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Appendix JBBI Vol 5, No 2, December 2018: Keyword Index and Author Index Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.993 KB) | DOI: 10.29122/jbbi.v5i2.3326

Abstract

PENGARUH PEMBERIAN MANUR BROILER DENGAN FERMENTASI Lactobacillus casei TERHADAP KONVERSI PAKAN AYAM KAMPUNG Nururrozi, Alfarisa; Indarjulianto, Soedarmanto; Ramandani, Dhasia; Yanuartono, Yanuartono
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (995.536 KB) | DOI: 10.29122/jbbi.v5i2.2774

Abstract

The Effect of Broiler Manure with Lactobacillus casei Fermentation on the Kampung Chicken Feed Convertion Ratio ABSTRACTHusbandry of kampung chicken is constrained by high feed prices and poor productivity. This study aims to utilize alternative feed materials derived from broiler manure to obtain a cheaper feed with good quality. Manure contains high nutrients. Manure was fermented using Lactobacillus casei to improve feed conversion. Two hundred chickens were divided into 4 groups (n = 50). Groups P1, P2, and P3 were given 4%, 8%, and 12% fermentation of L. casei, respectively. Group P0 was given a regular feed without L. casei. Each treatment group consisted of four replicates and were maintained for 60 days. The research design used was Completely Randomized Design subjected to analysis of variant (ANOVA) followed by Duncan test. The feed conversion values of groups P0, P1, P2, and P3 were 4.46; 4.38; 4.21; and 4.54, respectively. The results showed that the feed conversion was not significant in all groups. It was concluded that L. casei fermenter could not improve the feed conversion ratio (FCR).Keywords: FCR, fermentation, kampung chicken, Lactobacillus casei, manure ABSTRAKBudidaya ayam kampung terkendala tingginya harga pakan dan rendahnya produktivitas. Penelitian ini bertujuan memanfaatkan pakan alternatif bersumber manur (limbah kotoran) ayam broiler untuk memperoleh pakan murah dengan kualitas baik. Manur broiler masih mengandung nutrisi yang tinggi. Manur difermentasi menggunakan Lactobacillus casei untuk memperbaiki konversi pakan. Dua ratus ekor ayam dibagi menjadi 4 kelompok (n=50 ekor). Kelompok P1, P2, dan P3 masing-masing diberi ransum yang ditambah fermentasi L. casei sebanyak 4%, 8%, dan 12%. Kelompok P0 diberikan pakan biasa tanpa penambahan L. casei. Setiap kelompok perlakuan terdiri dari empat ulangan dipelihara selama 60 hari. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan analisis ragam yang dilanjutkan dengan uji Duncan. Konversi pakan dari kelompok P0, P1, P2, dan P3 berturut-turut 4,46; 4,38; 4,21; dan 4,54.  Hasil penelitian menunjukkan konversi pakan tidak berbeda nyata pada semua kelompok perlakuan. Dari hasil penelitian disimpulkan penggunaan fermenter L.casei pada pakan belum mampu memperbaiki konversi pakan.Kata Kunci: ayam kampung, FCR, fermentasi, Lactobacillus casei, manur
EKSTRAK DAUN SEMBUNG (Blumea balsamifera) MEMPERBAIKI HISTOLOGI TESTIS TIKUS WISTAR YANG DIINDUKSI PAKAN TINGGI LEMAK Widhiantara, I Gede; Permatasari, Anak Agung Ayu Putri; Siswanto, Ferbian Milas; Dewi, Ni Putu Eny Sulistya
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1063.993 KB) | DOI: 10.29122/jbbi.v5i2.2868

Abstract

Sembung (Blumea balsamifera) Leaf Extract Improves Testis Histology of High-Fat Diet-Induced RatsABSTRACTHigh fat and high cholesterol diet cause hyperlipidemia, leading to various health problems including reproductive health. The purpose of this study was to examine the effect of sembung (Blumea balsamifera) leaf extract on testicular histology profile of high-fat-diet-induced wistar. This research used 16 adult male rats (Rattus norvegicus), aged 3-4 month, weighing 150-200 g, and randomly divided into two groups. Eight rats were treated with distilled water and eight rats were treated with 2 mg/mL B. balsamifera extract. High-fat diet was a 30 days of porcine fat feed. The results showed that the diameter of seminiferous tubules, the number of spermatogenic cells of spermatogonium A, spermatocytes Pakiten and spermatid 16 were increased by giving sembung leaf extract for 50 days (p <0.05). These results suggested that the sembung leaf extract improves testis histology of high-fat diet-induced rats. Keywords: high-fat diet, rat, sembung leaf, seminiferous tubules, spermatogenic cellsABSTRAKMakanan tinggi lemak dan tinggi kolestrol menyebabkan hiperlipidemia yang menimbulkan masalah pada sistem reproduksi. Penelitian ini bertujuan untuk mengetahui manfaat pemberian ekstrak daun sembung (Blumea balsamifera) terhadap profil tubulus seminiferus dan sel-sel spermatogenik pada tikus wistar yang diinduksi pakan tinggi lemak. Sebanyak 16 ekor tikus wistar jantan dewasa (Rattus norvegicus) umur 3-4 bulan, berat 150-200 g, secara random dibagi dua kelompok, yaitu 8 ekor tikus kelompok kontrol (aquades steril) dan 8 ekor tikus kelompok perlakuan (ekstrak daun sembung dosis 2 mg/mL). Tikus diinduksi pakan tinggi lemak berupa lemak babi selama 30 hari. Pada prettest dilakukan pemeriksaan diameter tubulus seminiferus dan sel-sel spermatogenik. Hasil penelitian menunjukkan bahwa rata-rata diameter tubulus seminiferus tikus meningkat signifikan setelah pemberian ekstrak daun sembung. Peningkatan secara signifikan juga diikuti oleh spermatogonium A, spermatosit Pakiten dan spermatid 16 (p<0,05). Dapat disimpulkan bahwa ekstrak daun sembung memperbaiki histologi testis tikus wistar yang diinduksi pakan tinggi lemak.Kata Kunci: daun sembung, pakan tinggi lemak, sel spermatogenik, tikus, tubulus seminiferus
MANURE UNGGAS: SUPLEMEN PAKAN ALTERNATIF DAN DAMPAK TERHADAP LINGKUNGAN Yanuartono, Yanuartono; Nururrozi, Alfarisa; Indarjulianto, Soedarmanto; Haribowo, Nurman; Purnamaningsih, Hary; Raharjo, Slamet
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1472.076 KB) | DOI: 10.29122/jbbi.v5i2.2775

Abstract

Manure Poultry: Alternative Feed Supplements and Impacts on the EnvironmentABSTRACTThe increase in protein demand is now of serious concern as the human population is forecasted to rise to as much as 9.6 billion by 2050. The poultry industry is one of the largest and fastest growing sectors of livestock production in the world. Increased production results in increased sewage so that the impact on the emergence of environmental problems associated with increased air pollution, water, and soil. The sustainability of animal feeds is crucial in the development of livestock production systems, and feed efficiency can be improved by reusing poultry waste in livestock diets, thus diminishing the use of feed grains. There are several ways of disposing of poultry waste including burial, incineration, composting, fertilizer or source of biogas energy and feed for livestock. Poultry manure is a rich source of lignocelluloses, polysaccharides, proteins, minerals, and other biological materials. It is currently expected some problems can be overcome by utilizing poultry manure waste as an alternative feed source for livestock. This paper aims to review the negative effects of excessive chicken manure and its benefits as an alternative feed for livestock and fish.Keywords: alternative feed, livestock, pollution, poultry industry, poultry manure ABSTRAKKenaikan permintaan protein menjadi perhatian serius karena populasi manusia diperkirakan akan meningkat menjadi sebanyak 9,6 miliar orang pada tahun 2050. Industri perunggasan merupakan salah satu sektor produksi ternak terbesar dan tercepat di dunia. Meningkatnya hasil produksi tersebut akan menambah jumlah limbah sehingga berdampak pada munculnya masalah lingkungan yang terkait dengan peningkatan polusi udara, air dan tanah. Ketersediaan pakan hewan secara berkesinambungan sangat penting dalam pengembangan sistem produksi ternak dan efisiensi pakan dapat ditingkatkan dengan menggunakan kembali limbah unggas sebagai bahan pakan ternak, sehingga mengurangi penggunaan biji-bijian sebagai sumber pakan. Ada beberapa metode mengurangi jumlah manure ayam termasuk penguburan, insinerasi, pengomposan, pemupukan atau sumber energi biogas dan pakan ternak. Kotoran unggas adalah sumber lignoselulosa, polisakarida, protein, mineral dan bahan biologi lainnya. Saat ini diperkirakan beberapa permasalahan bisa diatasi dengan memanfaatkan limbah manure unggas sebagai sumber pakan alternatif bagi ternak. Tulisan ini bertujuan untuk mengkaji dampak negatif dari manure ayam yang berlebihan dan manfaatnya sebagai pakan alternatif untuk ternak dan ikan.Kata Kunci: industri perunggasan, manure ayam, pakan alternatif, polusi, ternak
EVALUASI AKTIVITAS INHIBISI XANTIN OKSIDASE DAN KANDUNGAN SENYAWA POLIFENOL DARI EKSTRAK SAPPAN Ningsih, Sri; Churiyah, .
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2349.438 KB) | DOI: 10.29122/jbbi.v5i2.2880

Abstract

Evaluation of xanthine oxidase inhibitory activity and polyphenolic content of sappan extractABSTRACTHyperuricemia is a disease that is characterized by a high uric acid level, in which the number of patients tends to increase every year. This research was intended to evaluate the xanthine oxidase (XO) inhibitory activity and determinate the total polyphenol content of heartwood sappan (Caesalpinia sappan L.) extract. The extract was prepared by macerating the dry powder wood using 70% ethanol at room temperature. The quality of ethanolic extract obtained was evaluated based on BPOM guideline. XO inhibitory power was determined by measuring uric acid produced in the xanthine/XO system in vitro. The polyphenol content of the extract was measured using Folin-Ciocalteu reagent spectrophotometrically. The results showed that the quality of sappan semisolid extract fulfilled the required standard. Sappan extract inhibited XO activity by 98% relative to the positive control, allopurinol, at the final extract concentration of 100 µg/mL. The total polyphenol content was 26% of the crude extract. It could be concluded that sappan ethanolic extract has the potential to be developed as an ingredient for hyperuricemia treatment.Keywords: hyperuricemia, sappan, total polyphenol, xanthine, xanthine oxidase ABSTRAKHiperurisemia adalah penyakit yang dicirikan dengan kadar asam urat tinggi dimana prevalensi penderita cenderung meningkat. Penelitian ini bertujuan untuk mempelajari aktivitas esktrak kayu sappan (Caesalpinia sappan L.) dalam menginhibisi enzim XO (xantin oksidase) secara in vitro dan penentuan kadar senyawa polifenol total yang terkandung di dalamnya. Ekstrak dibuat dengan cara maserasi serbuk kayu menggunakan pelarut etanol 70% pada suhu kamar. Kualitas ekstrak dievaluasi mengacu pada parameter karakterisasi ekstrak yang ditetapkan oleh BPOM. Aktivitas inhibisi XO ditetapkan dengan mengukur kadar asam urat yang terbentuk pada sistem xantin/XO in vitro. Kadar polifenol ekstrak diukur menggunakan pereaksi Folin-Ciocalteu secara spektrofotometri. Hasil analisis menyatakan bahwa kualitas ekstrak kental sappan memenuhi persyaratan yang ada. Pengujian inhibisi XO dengan pembanding positif allopurinol pada konsentrasi akhir ekstrak sebesar 100 µg/mL menunjukkan bahwa ekstrak mempunyai kekuatan menginhibisi XO sebesar 98% relatif terhadap pembanding positif allopurinol. Kadar senyawa polifenol total dalam ekstrak sappan sebesar 26% dari ekstrak kasar. Dari penelitian ini dapat disimpulkan bahwa ekstrak sappan mempunyai potensi untuk dikembangkan sebagai bahan untuk mengatasi hiperurisemia.Kata Kunci: hiperurisemia, polifenol total, sappan, xantin, xantin oksidase
AKTIVITAS ANTIOKSIDAN EKSTRAK KAPANG ENDOFIT Cb.Gm.B3 ASAL RANTING KAYU MANIS (Cinnamomum burmanni) Rachman, Fauzy; Mubarik, Nisa Rachmania; Simanjuntak, Partomuan
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9174.357 KB) | DOI: 10.29122/jbbi.v5i2.3052

Abstract

Antioxidant Activity of Endophytic Fungi Cb.Gm.B3 Extract from Cinnamon (Cinnamomum burmanni) TwigsABSTRACTThere are many degenerative diseases that are caused by a free radical effect. Cinnamon (Cinnamomum burmanni) contains cinnamaldehyde compounds that have activity as a powerful antioxidant and fight free radicals. Endophytic fungi can be found in cinnamon plants living symbiotically. Endophytic fungi produce a variety of bioactive metabolites including antioxidants. This research was conducted to isolate endophytic fungi from C. burmanni plant which is active as antioxidant. Endophytic fungi isolation was carried out using surface sterilization method and cultivated in PDA media. Antioxidant activity test was performed using free radical 2.2-diphenyl-1-picrylhydrazyl (DPPH) method. Selected isolates were then identified molecularly to determine their species. A total of nine fungi were isolated from cinnamon twigs. The result showed that the highest antioxidant activity was obtained from Cb.Gm.B3 with IC50 of 13.219 ± 0.755 µg/mL. The selected isolate Cb.Gm.B3 taxonomically has a high similarity with Neofusicoccum parvum isolate PEL23 (Accession no: KY053054.1).Keywords: antioxidant, Cinnamomum burmanni, 2.2-diphenyl-1-picrylhydrazyl, endophytic fungi, Neofusicoccum parvum ABSTRAKKayu manis (Cinnamomum burmanni) mengandung senyawa sinamaldehid yang memiliki aktivitas sebagai antioksidan kuat dan dapat menangkal radikal bebas. Dalam tanaman kayu manis terdapat kapang endofit yang hidup bersimbiosis. Kapang endofit dapat menghasilkan berbagai senyawa metabolit bioaktif termasuk antioksidan. Penelitian ini dilakukan untuk mengisolasi kapang endofit dari tanaman C. burmanni yang aktif sebagai antioksidan. Isolasi kapang endofit dilakukan menggunakan metode sterilisasi permukaan dan ditanam pada media PDA. Pengujian aktivitas antioksidan dilakukan menggunakan metode peredaman radikal bebas dengan reagen 2.2-difenil-1-pikrilhidrazil (DPPH). Isolat terpilih diidentifikasi secara molekuler untuk menentukan spesiesnya. Sebanyak 9 isolat kapang berhasil diisolasi dari jaringan ranting tanaman kayu manis. Aktivitas antioksidan tertinggi (IC50) didapatkan dari isolat Cb.Gm.B3 sebesar 13,219 ± 0,755 µg/mL. Isolat terpilih Cb.Gm.B3 secara taksonomi memiliki tingkat kemiripan yang tinggi dengan Neofusicoccum parvum isolat PEL23 (No. aksesi: KY053054.1).Kata Kunci: antioksidan, Cinnamomum burmanni, 2.2-difenil-1-pikrilhidrazil, kapang endofit, Neofusicoccum parvum
PEMURNIAN ENZIM SEFALOSPORIN-C ASILASE DAN OPTIMASI PROSES KROMATOGRAFI PENUKAR ION Nasution, Uli Julia; Wijaya, Silvia Melinda; Wibisana, Ahmad; Safarrida, Anna; Rachmawati, Indra; Puspitasari, Dian Japany; Naim, Sidrotun; Mahsunah, Anis Herliyanti; Wulyoadi, Sasmito; Suyanto, Suyanto
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1567.447 KB) | DOI: 10.29122/jbbi.v5i2.2902

Abstract

Purification of Cephalosporin-C Acylase and Its Optimization of Ion-Exchange ChromatographyABSTRACTCephalosporin-C acylase (CCA) has an important role in the one-step conversion of cephalosporin-C into 7-ACA. Purification process aims to increase specific activity of CCA enzyme. Purification began with cell lysis, ammonium sulphate precipitation, dialysis, ion exchange chromatography (IEC) and size exclusion chromatography. IEC optimization of elution step was also done to compare gradient and isocratic elusion. Purification was capable to increase the enzyme purity upto 33.66 fold, with specific activity of 3.00 U/mg and the yield reached 41.41%. Optimization of elusion during IEC showed that isocratic protein elusion was more efficient (taking shorter time, 3 column volume (CV) only) than that of gradient batch (up to 9 CV). SDS-PAGE analysis demonstrated that the recombinant CCA enzyme existed in two types, active enzyme containing α-subunit (25 kDa) and β-subunit (58 kDa), and inactive enzyme (83 kDa) as precursor. Furthermore, 30% ammonium sulphate saturated precipitation was able to precipitate this inactive CCA.Keywords: 7-ACA,CCA, cephalosporin C, protein purification, specific activity ABSTRAKSefalosporin-C asilase (CCA) merupakan enzim yang berperan penting dalam konversi satu tahap sefalosporin-C menjadi 7-ACA. Proses purifikasi merupakan salah satu cara untuk meningkatkan aktivitas spesifik enzim CCA. Proses purifikasi dimulai dari memecah sel, diikuti dengan tahap presipitasi menggunakan amonium sulfat, dialisis, kromatografi penukar ion (IEC) dan kromatografi eksklusi. Optimasi proses IEC pada tahap elusi juga dilakukan untuk membandingkan elusi enzim CCA secara gradien dan isokratik. Proses purifikasi pada penelitian ini mampu meningkatkan kemurnian enzim hingga 33,66 kali, dengan aktivitas spesifik sebesar 3,00 U/mg dan perolehan enzim sebesar 41,41%. Hasil optimasi IEC pada proses elusi secara isokratik lebih efisien dari segi waktu (hanya membutuhkan 3 kolom volume (CV) dibandingkan dengan secara gradien (sampai 9 CV). Hasil SDS-PAGE menunjukkan bahwa CCA rekombinan merupakan enzim dengan 2 macam bentuk yaitu enzim aktif, yang terdiri dari subunit α (25 kDa) dan β (58 kDa), dan enzim tidak aktif berupa prekursor (83 kDa). Proses presipitasi menggunakan amonium sulfat 30% tersaturasi dapat mengendapkan prekursor CCA.Kata Kunci: 7-ACA, aktivitas spesifik, CCA, purifikasi protein, sefalosporin C
Front Cover JBBI Vol 5, No 2, December 2018 Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1404.371 KB) | DOI: 10.29122/jbbi.v5i2.3290

Abstract

HISTOLOGI LIMPA DAN HEMATOLOGI MENCIT YANG DIINFEKSI Escherichia coli SETELAH PEMBERIAN ASAM HUMAT GAMBUT KALIMANTAN Rousdy, Diah Wulandari; Wardoyo, Elvi Rusmiyanto Pancaning
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jbbi.v5i2.2900

Abstract

Spleen Histology and Hematology of Mice Infected by Escherichia coli after Oral Administration of Humic Acid from Borneo PeatABSTRACTHumic acid compounds have an immunostimulatory effect. The aim of this research was to determine the effect of humic acid on the spleen of mice infected with Escherichia coli. The study used a completely randomized design with six treatments and five replicates. The treatments were normal control, negative control, positive control of isoprinosine, humic acid dose of 62.5; 125; and 250 mg/kg body weight (BW). The results showed that E. coli infection caused diarrhea symptoms and significant weight loss. There were significant differences (P<0.05) on hematocrit value and a total leukocyte count of humic acid, in which isoprinosine treatment was higher than those of negative control and normal control. There was no significant difference in the spleen weight of the mice subjected to the different treatments, but through histologic observations a significant difference (P<0.05) was found in the histologic size of the spleen. Humic acid treatment of 250 and 125 mg/kg BW resulted in the widest white pulp (495.8 ± 58.2 µm) and the highest leukocytes count (6725 ± 1018 cell/mL), respectively. On the red pulp serving as negative control numerous clusters of lymphocyte cells were found.Keywords: Escherichia coli, humic acid, peat soil, spleen, white pulp ABSTRAKSenyawa asam humat mempunyai potensi imunostimulan. Penelitian ini bertujuan mengetahui pengaruh pemberian asam humat terhadap organ limpa mencit yang diinfeksi bakteri Escherichia coli. Penelitian ini menggunakan rancangan acak lengkap dengan enam perlakuan dan lima ulangan. Perlakuan tersebut yakni kontrol normal, kontrol negatif, kontrol positif isoprinosin, asam humat dosis 62,5; 125; dan 250 mg/kg berat badan (BB). Hasil penelitian menunjukkan bahwa infeksi bakteri E. coli pada mencit menyebabkan mencit mengalami gejala diare dan penurunan berat badan yang signifikan. Perbedaan signifikan (P<0,05) pada nilai hematokrit dan jumlah leukosit total perlakuan asam humat dan isoprinosin lebih tinggi dibandingkan kontrol negatif dan kontrol normal. Tidak terdapat perbedaan nyata (P>0,05) pada berat limpa mencit antar perlakuan, melalui pengamatan histologi ditemukan perbedaan ukuran histologi limpa mencit. Perlakuan asam humat 250 mg/kg BB mempunyai ukuran pulpa putih (495,8 ± 58,2µm) dan perlakuan asam humat 125 mg/kg BB mempunyai nilai leukosit tertinggi (6725 ± 1018 sel/mL). Pada pulpa merah perlakuan kontrol negatif ditemukan banyak sel limfosit yang menggerombol.Kata Kunci: asam humat, Escherichia coli, limpa, pulpa putih, tanah gambut
KEMAMPUAN EKSTRAK SENYAWA AKTIF BAKTERI ENDOFIT DALAM MENGHAMBAT PERTUMBUHAN Fusarium oxysporum f.sp. PADA KELAPA SAWIT Emilia Candrawati; Bedah Rupaedah; Sumpono Sumpono; Agus Sundaryono
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (921.358 KB) | DOI: 10.29122/jbbi.v5i2.2769

Abstract

Ability of Active Compound Extract of Endophytic Bacteria to Inhibit the Growth of Fusarium oxysporum f.sp. in Oil Palm ABSTRACTWilt vessels disease in oil palm plants is caused by Fusarium oxysporum f.sp. This disease is very harmful because of its ability to kill the infected oil palm plant in less than a year. Endophytic bacteria are likely to be biological controllers for the disease because of their ability to produce bioactive antifungal compounds. Isolation of endophytic bacteria from oil palm plant and activity test of their active compounds against F. oxysporum f.sp. in vitro had been done. Antagonistic test of endophytic bacterial isolates against F. oxysporum f.sp. was carried out using a double culture method. The potential endophytic bacterial isolates were extracted using ethyl acetate solvent for their active compounds, which were then tested for its activity in inhibiting the growth of F. oxysporum f.sp. The results showed that the active compound extract of B11 endophytic bacteria with the incubation time of 24 and 54 hours gave the growth inhibition of F. oxysporum f.sp. at the level of 29.23% and 43.85%, respectively.Keywords: antagonistic test, bioactive compound, endophytic bacteria, F. oxysporum f.sp., oil palm ABSTRAKPenyakit layu pembuluh pada tanaman kelapa sawit disebabkan oleh Fusarium oxysporum f.sp. Penyakit ini menjadi penyebab kematian tanaman kelapa sawit yang telah terinfeksi dalam waktu kurang dari setahun. Bakteri endofit asal tanaman kelapa sawit dimungkinkan menjadi pengendali hayati bagi penyakit ini karena kemampuan bakteri tersebut memproduksi senyawa bioaktif yang bersifat antifungi. Isolasi bakteri endofit dari tanaman kelapa sawit dan uji aktivitas senyawa aktifnya terhadap F. oxysporum f.sp. secara in vitro telah dilakukan. Uji antagonis isolat bakteri endofit terhadap jamur patogen F. oxysporum f.sp. menggunakan metode kultur ganda. Isolat bakteri endofit potensial diekstrak senyawa aktifnya dengan menggunakan pelarut etil asetat, kemudian senyawa aktif ini diuji aktivitasnya dalam menghambat pertumbuhan jamur patogen F. oxysporum f.sp. Hasil penelitian menunjukkan bahwa ekstrak senyawa aktif bakteri endofit B11 dengan waktu inkubasi 24 dan 54 jam memberikan daya hambat terhadap F. oxysporum f.sp. sebesar masing-masing 29,23% dan 43,85%.Kata Kunci: bakteri endofit, F. oxysporum f.sp., kelapa sawit, senyawa aktif, uji antagonis 

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