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Journal : Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH)

ISOLASI BAKTERI FOTOSINTETIK DARI DASAR TAMBAK PADA KONDISI UDARA YANG MENGANDUNG ASAP KENDARAAN BERMOTOR Wawan Abdullah Setiawan
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 2 No. 2 (2014)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v2i2.116

Abstract

Semakin meningkatnya volume kendaraan saat ini berdampak pada meningkatnya polusi asap kendaraan. Asap kendaraan bermotor juga diketahui mengandung CO2 yang mampu meningkatkan pemanasan global. Diketahui bahwa terdapat bakteri fotosintetik yang mampu memfiksasi CO2. Bakteri ini dapat ditemukan di danau, sawah, maupun dasar tambak. Penelitian ini bertujuan untuk mengisolasi bakteri fotosintetik dari berasal dari dasar tambak setelah diberi penambahan asap kendaraan bermotor pada medium kulturnya. Ditemukan terdapat 5 isolat bakteri yang tumbuh; 3 bakteri bersifat gram negatif, 2 berbentuk batang dan 1 berbentuk bulat. 2 bakteri bersifat gram positif dengan bentuk batang.
RESISTANCE OF RED CURLY CHILI (Capsicum annuum L.) SPROUTS TO FUSARIUM OXYSPORUM INFECTION FROM SEEDS INDUCED BY 0.2 mT Essy Dumayanti; Rochmah Agustrina; Wawan Abdullah Setiawan; Eti Ernawiati; Yulianty Yulianty; Lili Chrisnawati
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 8 No. 1 (2021)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v8i1.167

Abstract

Curly red chili (Capsicum annuum L.) is widely used as industrial raw material because it has a spicy taste. The increasing demand for chili is not balanced with the level of production. Chilies are susceptible to disease, one of which is fusarium wilt. The magnetic field affected the physical and chemical properties of water so that it increased peroxidase enzyme activity and plant metabolism. This research was aim to know the protective effect seeds induced by 0.2 mT Magnetic Fiel had given to red curly chili (Capsicum annuum L.) sprouts to Fusarium oxysporum infection. This study was arranged in a completely randomized design (CRD) with 5 treatments consisting of M0F0 (control), M7F0, M7F60, M15F0, M15F60. M0 is a seed not induced by a magnetic field; M7 is seed induced by magnetic field 7 minutes 48 seconds, M15 is seed induced by magnetic field 15 minutes 36 seconds, F0 is sprouted not infected with F. oxysporum and F60 is sprouts infected with F. oxysporum for 60 minutes. Each unit is repeated 5 times. The results of the ANOVA showed that exposure to a magnetic field had a significant effect on increasing plant height at 21, 28, and 35 days after planting (HST); the wet and dry weight of 7 days old plants; and the content of chlorophyll a, b, and total before flowering 21 days after planting. Overall, the 0.2 mT magnetic field treatment for 7 minutes 48 seconds tended to give better results to increase the growth of chili plants against F. oxysporum infection.
ISOLATION OF Salmonella typhoid 16s rRNA GENE FRAGMENT BASED ON POLYMERASE CHAIN REACTION (PCR) Salman Farisi; Wawan Abdullah Setiawan; Suratman Umar
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 7 No. 2 (2020)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v7i2.157

Abstract

Iridescent is one of the traditional fish fermentation products that has a sour taste and is widely known in various regions of Indonesia. In its metabolism LAB produces organic acids, hydrogen peroxide, diacetyl, CO2 and bacteriocin. These compounds are antimicrobial compounds that inhibit the growth of pathogenic bacteria and bacterial decomposition. The purpose of this study was to determine the antibacterial activity produced by lactic acid bacteria isolates from catfish (Pangasius hypophthalmus) inhibiting the growth of Escherecia coli. From iridescent obtained 9 isolates that have different characteristics from each other by the morphology of LAB isolate colonies which include colony color, colony shape, colony elevation and colony margin. After production of antibacterial, all isolates showed positive result when antibacterial tested againts Escherecia coli either in acidic condition or neutralized.