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<![CDATA[ISOLASI DAN SELEKSI BAKTERI ASAM LAKTAT DARI YOGHURT PRODUKSI INDUSTRI RUMAH TANGGA DI PEKANBARU YANG BERSIFAT ANTIBAKTERI TERHADAP Escherichia coli DAN Salmonella typhi ]]>
<![CDATA[Lili Yani]]>;
<![CDATA[Rodesia Mustika Roza]]>;
<![CDATA[Atria Martina]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[The occurance of Lactic Acid Bacteria (LAB) in yoghurt produced by home industry inPekanbaru as probiotic potentially improve intestinal physiological function, useful forhealth as well as prevention of the growth of pathogenic bacteria. The purposes of thisstudy were to calculate the total LAB population of yoghurt with the effect of mango andstrawberry juice during different storage process, and also to determine the ability ofantibacterial activity against Escherichia coli and Salmonella typhi. The population of LABin yoghurt was 4,0 × 10 7 – 2,9 × 10 8 CFU/ml. Antimicrobial activity assay used the welldiffusion method. The mango juice yoghurt incubated in 7 day was the most effective forEscherichia coli with the inhibition zone 27,1 mm. While the mango juice yoghurtincubated in 3 day was the most effective for Salmonella typhi with inhibition zone 29,9mm.]]>
<![CDATA[ISOLASI DAN KARAKTERISASI FUNGI ENDOFIT DARI KULIT BUAH MANGGIS (Garcinia mangostana L) SEBAGAI ANTIMIKROBA TERHADAP Candida albicans, Staphylococcus aureus DAN Escherichia coli ]]>
<![CDATA[Dewi Elfina]]>;
<![CDATA[Atria Martina]]>;
<![CDATA[Rodesia Mustika Roza]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Garcinia mangostana Linn is one of the popular local plants that has been used asmedicinal herb. Extract of Garcinia mangostana has been reported having anti-inflammatory, anti-tumour, anti-oxidant and antimicrobial activities. Bioactivecompounds from extract of mangosteen fruit husk were thought to produce byendophytic fungi. The purpose of this research were to isolate and characterizeendophytic fungi from mangosteen fruit husk that potential to produce antimicrobialcompound. Antimicrobial activity was determined by measuring the inhibition zonewith Agar Disc and Kirby-Bauer assay methods using pathogenic microbes i.e. Candidaalbicans, Staphylococcus aureus and Escherichia coli. Eleven of twenty isolatesendophytic fungi which were obtained from mangosteen fruit husk were known to haveantimicrobial activities. Endophytic fungi producing antimicrobial belongs to genusAspergillus, Penicillium, Trichoderma, Alternaria and Fusarium. Endophytic fungihaving the highest antimicrobial activities in agar disc assay were Penicilliumsp.1KMA, Aspergillus sp.5KMR, Aspergillus sp.1KMA, Fusarium sp.KMR andAspergillus sp.3KMB. Endophytic fungi having the highest antimicrobial activities inKirby-Bauer assay was Penicillium sp.1KMA. Antimicrobial activities of Penicilliumsp.1KMA was significantly different with the other four endophytic fungi.]]>
<![CDATA[ANALISIS ISI LAMBUNG IKAN TAPAH (Wallago leeri) DI PERAIRAN SUNGAI SIAK DAN SUNGAI KANDIS DESA KARYA INDAH KECAMATAN TAPUNG ]]>
<![CDATA[Susi Kemala Sari]]>;
<![CDATA[Roza Elvyra]]>;
<![CDATA[Yusfiati ']]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[A study on gut content analysis of Tapah fish (Wallago leeri) at two stations of Siak andKandis river has been carried out in February to July 2013. The objective of this study wasto know about the kinds of food for Tapah fish,such as main, suplement and additional foodin Siak and Kandis river. The data was analyzed using the Index of Preponderance (thelargest part index) by Natarjan and Jingran cit. Effendie (1979). The result of thestudyrevealed that the main food of Tapah fish in Siak river station consists ofCyclocheilichthyssp. (48%), the supplement food consists of Ompok sp. (28%), Puntius sp.(12%), and animal debris (11%), whereas additional food is Rasbora sp. (1%). Tapah fishin Kandis river has main food which consists of Cyclocheilichthys sp. (43%), and supplementfood consists of Ompok sp. (27%), Puntius sp. (10%), and animal debris (18%). As anadditional food, Tapah fish also feeds on Rasbora sp. (2%).]]>
<![CDATA[INDUKSI TUNAS IN VITRO DARI EKSPLAN TUNAS BUAH (SLIP) TANAMAN NANAS (Ananas comosus (L.) Merr.) ASAL KAMPAR DENGAN PENAMBAHAN 6-BENZYLAMINOPURINE (BAP) ]]>
<![CDATA[Susiyani ']]>;
<![CDATA[Wahyu Lestari]]>;
<![CDATA[Siti Fatonah]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Pineapple (Ananas comosus (L.) Merr.) is widely cultivated. One of pineapple plantationcenters in Riau Province is the Kampar district. The vegetative seedling technique ofpineapple is done using tissue culture techniques. Pineapple plant part that used as explantsin this study is fruit buds. Explants were cut into whole bud and bud sectionedlongitudinally. The growth regulator used was BAP with different concentration, i.e. 0.0,0.5, 1.0, 1.5, 2.0, 2.5 mg/l in Murashige and Skoog (MS) medium. This study aims todetermine the optimum concentration of BAP as well as the best explant part and to get thebest combination between treatments in shoot induction. The study design used randomizedblock design (RBD) factorial. The concentration of 1.0 mg/l BAP on whole bud explantsinduced 3 buds, while the bud sectioned longitudinally induced only one shoot on control,and concentration at 0.5 and 1.0 mg/l. Whole bud explants induced shoots in all of thetreatments except the control. The interaction between treatment and the combination thatcould induced the greatest number of shoot was the whole bud explants with the additionof 1.0 mg/l BAP.]]>
<![CDATA[ISOLASI DAN SELEKSI JAMUR SELULOLITIK DARI HUTAN ARBORETUM UNIVERSITAS RIAU ]]>
<![CDATA[Hardianty, Denty Irma]]>;
<![CDATA[Roza, R. M.]]>;
<![CDATA[Martina, A.]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[The Arboretum University of Riau constitutes of a secondary forest in Pekanbaru. Manyplant genera exist in this Arboretum, therefore the litter produced has high content ofcellulosa that may provide suitable environment for many cellulolitic fungus. Thepurpose of this study was to obtain the cellulolytic fungus isolates by screening the soilthat collected from Arboretum University Riau, using Potato Dextrose Agar medium.The selection of cellulolytic fungus used Carboxyl Methyl Cellulose medium and wasindicated by the appearance of clear zona. Cellulase activities were determinated usingthe ratio of clear zone and colony diameter. The result identified 53 cellulolytic fungusisolates. The L4H4 isolate had the highest ratio (3,51). There were three ratio criterionsof clear zone to colony diameter in this study, i.e. high (24,53%), medium (35,85%) andlow (39,62%). The characterization result showed that 15 fungus isolates belonged tothe genera Aspergillus, Penicillium, Paecilomyces, Mucor and 2 isolates wereunidentified.]]>
<![CDATA[ANALISIS HUBUNGAN KEKERABATAN MACANG (Mangifera foetida Lour.) DI SUMATERA BAGIAN TENGAH ]]>
<![CDATA[Anto ']]>;
<![CDATA[Fitmawati ']]>;
<![CDATA[N. Sofiyanti]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[The diversity of Mangifera foetida Lour. (macang) in central Sumatra has not beenexplored and inventoried. On the other hand, the diversity of cultivars and varieties ofthis species is endangered due to the lost of its natural habitat. This research aimed toanalyze the diversity of macang in central Sumatra. The research was carried out fromDecember 2011 to June 2013. The morphological and agronomical characters of a totalof 66 macang trees had been observed. All of these observed characters were then scoredand analyzed using NTSYSpc 2.02 to determine their clustering and using Minitab toanalyze the principle component and correlation of Pearson. The result showed that thesimilarity coefficient ranged from 0.17 to 0.76. Dendogram constructed from thesimilairty coefficient showed two main groups, that clustered not based on the samplelocations but based on the character similarity (fruit color). The first group consisted of65 individuals and second group consisted of one individual. The result of Principlecomponent analysis showed two main groups, with the diversity accumulation value was40%. The results of correlation analysis of 66 characters showed that six characterswere positively corellated.]]>
<![CDATA[MORFOMETRIK IKAN TAPAH (Wallago leeri Bleeker, 1851) DARI SUNGAI SIAK DAN SUNGAI KANDIS PROVINSI RIAU ]]>
<![CDATA[N. Nathasya]]>;
<![CDATA[R. Elvyra]]>;
<![CDATA[Yusfiati ']]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[The study about morphometric of tapah fish (Wallago leeri Bleeker, 1851) from Siak Riverand Kandis River had been done. The purpose of this study was to compare tapah fish fromSiak River and Kandis River using 26 morphometric characters. This study was carried outfrom February 2013 to July 2013 using survey method. The number of samples whichcollected was 60 individual of tapah fish, consisted of 30 tapah fish from Siak River and 30tapah fish from Kandis River. The results indicated the differences of morphometriccharacters between tapah fish from Siak River and Kandis River. Linear regression analysisshowed that tapah fish from Siak River and Kandis River have very weak to very strongrelationship. Its growth status showed the positive allometric, isometric, and negativeallometric.]]>
<![CDATA[POTENSI LIMBAH SAGU (Metroxylon sp.) DI KECAMATAN TEBING TINGGI BARAT KABUPATEN KEPULAUAN MERANTI SEBAGAI SUBSTRAT PENGHASIL BIOGAS ]]>
<![CDATA[Anuar, Khaidir]]>;
<![CDATA[Zul, Delita]]>;
<![CDATA[', Fitmawati]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Biogas is one of alternative energy sources that fulfills future fuel needs. This studyaimed to analyse the potency of sago waste as fermentation substrate for biogasproduction. This research was done experimentally by employing sago waste materialsobtained from Sago Factory Nambus River from District West Tebing Tinggi Sub-province Meranti and fresh cow rumen liquid was obtained from slaughterhouse inPekanbaru. The biogas volume was calculated by measuring the volume of water thatwas pushed every 3 days, where the volume of water driven was proportional to thevolume of biogas produced. The bacterial cell numbers was counted using plate countmethod employing Nutrient Agar (NA). The substrate fermentation temperature and pHwere measured every 3 days. The highest biogas volume was produced by fermenter III(45760 ml) containing solid sago waste, liquid sago waste, and rumen liquid with ratio 1: 1 : 1 and the lowest was produced by fermenter II (1600 ml). The total bacterialinvolved in biogas production ranges from 1,87x10 5 – 2,87x10 8 CFU/ml samples. Thetemperature and pH of substrate fermetation was relatively constant during biogasproduction. The results showed that sago waste is potential as substrate for biogasproduction.]]>
<![CDATA[INDUKSI TUNAS IN VITRO DARI TUNAS BATANG (Sucker) TANAMAN NANAS (Ananas comosus (L.) Merr.) ASAL KAMPAR DENGAN PENAMBAHAN 6-BENZYLAMINOPURINE (BAP) ]]>
<![CDATA[Sari, Risna Manda]]>;
<![CDATA[Lestari, Wahyu]]>;
<![CDATA[Fatonah, Siti]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Pineapple (Ananas comosus (L.) Merr.) is a fruit plant that is liked most people. Fruitproduction and seedling availability have to be balanced in order to provide consumer’sneed. This problem can be solved using an in vitro technique. This research usedGroup Randomized Design (GRD) Factorial with two factors which are concentrationof BAP and explant section. The concentrations of BAP used in this study were 0,0;0,5; 1,0; 1,5; 2,0; 2,5 mg/l on MS medium. Explant source was collected from sucker,with two different parts whole bud and bud sectioned longitudinally. The objectives ofthis research were to get the optimal concentration, the best explant's cut part, and to getthe best treatment interaction and combination for in vitro shoot induction. The resultshowed that the whole bud that could give response to BAP was indicated by shootformation. The shoot was formed in the percentage of 25% with concentration 1,0 mg/lon 12 th day.]]>
<![CDATA[POTENSI MIKROBA INDIGENUS ASAL TANAH GAMBUT DESA RIMBO PANJANG KABUPATEN KAMPAR RIAU DALAM MENGHAMBAT PERTUMBUHAN Ralstonia solanacearum ]]>
<![CDATA[Dwiana Inggriani]]>;
<![CDATA[Rodesia M. Roza]]>;
<![CDATA[A. Martina]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Ralstonia solanacearum is one of soil pathogen bacteria that attack horticulture plant.Chemical pesticides are used commonly to control bacteria. Using chemical pesticidescontinously can give negative effect for living things and the evironment. Some soilmicrobes produce antibacterial compounds. This study aimed to test the potential ofpeat land microbes at Rimbo Panjang Kampar to inhibit Ralstonia solanacearum. Thisstudy used agar disk method to calculate the ratio activity between the inhibition zoneand the colony diameter (Z/K) and then grouped into high, medium and low criteria.Twenty isolates of fungi that produced antibacteria against Ralstonia solanacearumconsisted of genus Penicillium and Trichoderma. Isolate RPL2-29 (Penicillium) had thehighest ratio (2.12) and isolate RPL2-38 (Penicillium) had the lowest ratio (1.14).Eleven isolates of actinomycetes that produced antibacteria consisted of Streptomyces,Micromonospora while 2 isolates has not been unidentified.Isolate RB3S51(Streptomyces sp.) had the highest ratio (2.87) and RB3S57 (Streptomyces sp.) had thelowest ratio (1.29).The high criteria was dominated by actinomycetes isolates of thegenus Streptomyces. Isolate RB3S51 (Streptomyces sp.) had the highest ratio (2.87) andthe lowest ratio of fungal isolates RPL2-38 with ratio 1.14. Based on thecharacterization, the fungi were classified into the genus Penicillium.]]>
