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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

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Front Cover JBBI Vol 2, No 2, December 2015 Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 2 No. 2 (2015): December 20150
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (902.347 KB) | DOI: 10.29122/jbbi.v2i2.1061

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Front Cover JBBI Vol 4, No 2, December 2017 Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 4 No. 2 (2017): December 2017
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (961.143 KB) | DOI: 10.29122/jbbi.v4i2.2613

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Appendix JBBI Vol 1, No 1, December 2014: Keyword Index and Author Index Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 1 No. 1 (2014): December 2014
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.717 KB) | DOI: 10.29122/jbbi.v1i1.1042

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Appendix JBBI Vol 4, No 1, June 2017: Keyword Index and Author Index Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 4 No. 1 (2017): June 2017
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.274 KB) | DOI: 10.29122/jbbi.v4i1.2253

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PERUBAHAN KANDUNGAN ASAM FITAT DAN ASAM AMINO ESENSIAL BAHAN-BAHAN ORGANIK PAKAN YANG DIFERMENTASI RAGI TEMPE Muniroh, Arina; Suja'i, Imam; Wibowo, Aji; Saputra, Henry Kasman Hadi; Yunita, Etyn; Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 8 No. 1 (2021): June 2021
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (996.834 KB) | DOI: 10.29122/jbbi.v8i1.4743

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Changes in the Contents of Phytic Acid and Essential Amino Acids of Animal Feed Organic Materials Fermented by Tempe Starter The contents of antinutrients and nutrients are important in the selection of feed ingredients, especially for monogastric animals. The aim of this study is to determine the change in the contents of antinutrient phytic acid and nutrient essential amino acid in selected organic materials. Nine organic ingredients of agro-industrial by-products, namely rice bran, coffee skin, cassava bagasse, corn, coconut dreg, soy bean meal, pollard, corn gluten feed (CGF), and copra meal were fermented in solid state using tempeh starter for 48 hours at 30°C. Dense mycelia overgrowing evenly on the top, bottom, and cross-sliced surfaces was observed on rice bran, maize and copra meal substrates. These 3 selected organic materials were then analysed for the content of phytic acid and essential amino acids. The results showed that the lowest decrease (75.80%) in phytic acid content occurred in maize, namely from 18.49 ± 0.41 mg g-1 (before fermentation) to 4.48 ± 0.19 mg g-1 (after fermentation). The highest increase (59%) of total essential amino acids occurred in copra meal, namely from 38,991.89 ± 447.12 mg kg-1 (before fermentation) to 61,816.56 ± 894.24 mg kg-1 (after fermentation). Kandungan antinutrisi dan nutrisi merupakan hal penting dalam pemilihan bahan pakan, terutama untuk hewan monogastrik. Penelitian ini bertujuan mengetahui perubahan kandungan antinutrisi asam fitat dan nutrisi asam amino esensial pada bahan organik tertentu yang terpilih. Sembilan bahan organik yang merupakan hasil samping agroindustri, yakni dedak padi, kulit kopi, onggok, jagung, ampas kelapa, bungkil kedelai (soy bean meal), dedak gandum (pollard), produk samping jagung corn gluten feed (CGF), dan bungkil kopra difermentasi padat menggunakan ragi tempe selama 48 jam pada suhu 30°C. Miselium yang tumbuh subur, padat, dan merata pada permukaan atas, bawah, dan irisan melintang teramati pada dedak padi, jagung, dan bungkil kopra. Tiga bahan organik terpilih ini kemudian dianalisa kandungan asam fitat dan asam amino esensialnya. Hasil menunjukkan bahwa penurunan terbesar (75,80%) kandungan asam fitat terjadi pada jagung, yakni dari 18,49 ± 0,41 mg g-1 (sebelum fermentasi) menjadi 4,48 ± 0,19 mg g-1 (setelah fermentasi). Peningkatan tertinggi (59%) asam amino esensial total terjadi pada bungkil kopra, yakni dari 38.991,89 ± 447,12 mg kg-1 (sebelum fermentasi) menjadi 61.816,56 ± 894,24 mg kg-1 (setelah fermentasi).
Immobilization of Penicillin-G Acylase from Bacillus thuringiensis BD1 for Enhanced Amoxicillin Production Using Na-Alginate Entrapment Dewi, Rizky Aulia Prasasti; Widyasti, Erma Widyasti; Dianursanti, Dianursanti; Sriherwanto, Catur; Kusumaningrum, Susi; Rahayu, Maya D.; Putra, Noorendra L.; Hasanah, Nuur F.; Sativa, Rizka G.; Setyahadi, Siswa; Nandyawati, Dewi
Indonesian Journal of Pharmaceutical Science and Technology Vol 12, No 3 (2025)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v12i3.55501

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Efficient enzymatic production, particularly using Penicillin-G Acylase (PGA), is crucial for synthesizing amoxicillin, a penicillin-type antibiotic. This study optimized PGA immobilization from Bacillus thuringiensis BD1 using Na-alginate to enhance stability and cost-effectiveness. Various Na-alginate concentrations (1%, 1.25%, 1.5%) were tested, with stability assessments at pH 6-9 and temperatures of 30-60 °C, alongside reusability, morphology, and amoxicillin synthesis evaluations. Initial activity was 46.59 U/mg, with optimal immobilization at 1.5% Na-alginate achieving 41.01 U/mg. After four uses, immobilized PGA BD1 retained ±20% activity with optimal conditions at pH 7 and 40 °C. Enhanced amoxicillin synthesis compared to free enzymes highlights its industrial potential. This research demonstrates the feasibility of using immobilized PGA BD1 for scaling up amoxicillin production, offering significant economic and technological benefits.
MUTATION OF LIPASE-PRODUCING BACTERIAL ISOLATE FROM PALM OIL EFFLUENT FOR FAT HYDROLYSIS ON POME suhendar, dadang; Layly, Ika Rahmatul; Sabbathini, Gabriela Christy; Waltam, Deden Rosid; Wahjono, Edi; Sriherwanto, Catur; Haniyya, Haniyya
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 10 No. 1 (2023)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2023.1700

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Lipase is applied to hydrolyzethe residual oil or fat in palm oil mill effluent (POME), which serves as a feedstock for biogas production. A bacterial isolate (Bacillus velezensis) exhibiting lipase activity, previously obtained from Malimping, Pandeglang, Banten, Indonesia, underwentsequential treatments of gamma irradiation (1, 2, and 3 kGy), EMS (ethyl methane sulfonate) mutagenesis (0.5% v/v), and NTG (N-methyl N-nitrosoguanidine) (1 mg mL-1). Following each mutation, lipase activities of the mutant colonies were measured and compared to the wild-type strain. The results revealed that all mutated B. velezensiscolonies exhibited lipase activity values (7.78 ± 0.80 –9.05 ± 0.23 U mL-1) that were not significantly different from the wild-type isolate (8.31 ± 0.01 U mL-1), indicating strong bacterial resistance against the mutagenic treatments. The crude lipase preparation effectively hydrolyzed POME, resulting in a reduction of the COD value (from 131,450 ppm to 88,450 ppm) and O&G content (from 41,400 mg L-1to 5,770 mg L-1) within a 72-hour timeframe.
INHIBITORY ACTIVITY OF Trichoderma harzianum AGAINST PUTATIVELY PATHOGENIC FUNGUS ON RODENT TUBER (Typhonium flagelliforme) PLANT Sriherwanto, Catur
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 9 No. 1 (2022)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2022.1781

Abstract

Trichoderma spp. are globally considered as the most dominant biofungicide in the market. Reports on Trichoderma spp. efficacy against pathogenic fungi in commercial crops have been numerous, but much less in medicinal plants. This study aimed at testing the potential biofungicidal activity of Trichoderma harzianum in inhibiting the growth of a putatively pathogenic fungus isolated from rodent tuber (Typhonium flagelliforme) plant. The methods consisted of isolation of fungi from the plant’s surface, soil, and polybags. The isolates were then screened for their putative pathogenicity against rodent tuber before being subjected to 16S rRNA molecular identification and in vitro antagonist test using T. harzianum. Result showed that only isolate K4 showed pathogenicity on T. flagelliforme, and was molecularly identified as Lasiodiplodia theobromae, known globally as fungal pathogen attacking various plants. L. theobromae was inhibited by T. harzianum with inhibition index of 23.0 ± 4.3%, which was about twice higher than that of the positive control nystatin 100.000 IU mL (11.1 ± 0.6%). In conclusion, T. harzianum inhibited the growth of L. theobromae in vitro, hence indicating its biofungicidal potential.