Scientific Journals of Bogor Agricultural University
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Advancing Sustainable Mangrove Restoration: A Community-Driven Edu-Ecotourism Business Model in Banyuasin
Full text linkCoastal communities in the Banyuasin District heavily rely on mangrove ecosystem services. However, unsustainable livelihood practices are driving mangroves into degradation. Our study aims to identify alternative livelihoods that can transform more sustainable mangrove businesses and practices. This will be achieved by co-developing a business model through participatory action research (PAR) in mangrove villages of Banyuasin. Our study revealed potential community-driven edu-ecotourism businesses in Sungsang and Marga Sungsang Village for further development. This business heavily relies on the natural authenticity of its mangrove, which amplifies the urgency to restore the degraded mangrove in the landscape. Thus, there is a high alignment of the business model canvas components with restoration activities such as the development of a mangrove seedling nursery, selling, and planting. This community-driven business is financially viable, according to the financial metrics, with a net present value (NPV) of IDR 180,148,622, a benefit-cost ratio (BCR) of 1.3, an internal rate of return (IRR) of 52.88%, and a payback period (PBP) of 1.7 years. The development of this business model can leverage sustainable livelihood opportunities and reconcile multiple interests while amplifying the urgency of restoring mangroves. The collaborative efforts among the community during this process serve as an exercise to build collective knowledge, strengthen social ties, and enhance trust and communication. This, in turn, leads to stronger collective action and social capital, which can sustain mangrove restoration beyond the project duration
Ecosystem Services at Permata Sentul Golf Club in Bogor Regency
Full text linkGolf courses are green open spaces created for golfing recreation with dominant vegetation in the form of grass. In Indonesia, as one form of green open space landscape, golf courses are widely criticized for their development, resulting in fragmentation and loss of wildlife habitat, two significant causes of biodiversity loss. To address the problem, the golf industry is moving towards more sustainable golf course management to support Sustainable Development Goal 13 on climate change. Through this study, Permata Sentul Golf Club (PSGC) in Bogor Regency, Indonesia was selected to be studied and analyzed to determine its ability to maintain and utilize ecosystem services. PSGC was a natural forest ecosystem in a hilly area that has now been converted into golf course because of a land conversion process without much change to the original condition. This golf course consists of 25% tree-covered rough areas and 54% open areas for gameplay. Located in Tangkil Village, a rural area with extensive rice fields, the course occupies 8% of the village\u27s area. The average air humidity at PSGC is 70.3%, with an air temperature of 27.7°C. Trees at PSGC can store 19.83 tons/ha of carbon, which is included in the low category with carbon absorption of 1.33 tons/year/ha. The dominant tree vegetation types on the PSGC golf course are Mimusops elengi, Acacia mangium, and Schefflera actinophylla. Through the presence of the PSGC golf course, its contributions include providing a microclimate and diverse vegetation, which help create a cooler urban environment and serve as a habitat for various wildlife. However, its carbon storage capacity is still relatively low compared to other green open spaces, especially primary forests. Based on the research findings, strategies can be implemented to optimize the ecosystem services provided by the PSGC golf course. These strategies include enhancing collaboration with various stakeholders from governmental and non-governmental organizations and educating both internal and external parties about the importance of working together to support environmentally friendly programs on the golf course
Korelasi Cadangan Karbon terhadap Kerapatan Vegetasi Berdasarkan NDVI di Zona Rehabilitasi Taman Nasional Gunung Halimun Salak
Full text linkKenaikan konsentrasi Gas Rumah Kaca (GRK) dan emisi karbon merupakan faktor yang berkontribusi besar terhadap perubahan iklim global. Taman Nasional Gunung Halimun Salak (TNGHS) merupakan salah satu kawasan konservasi yang berpotensi dalam mengurangi dampak perubahan iklim melalui peningkatan cadangan karbon. Penelitian ini bertujuan untuk menganalisis kerapatan dan tingkat keanekaragaman vegetasi, menduga potensi biomassa dan cadangan karbon tersimpan di atas permukaan tanah, serta menganalisis hubungan antara nilai NDVI dengan jumlah jenis, kerapatan pohon, keanekaragaman vegetasi, luas bidang dasar (LBDS), dan konsentrasi karbon. Metode yang digunakan analisis vegetasi, sedangkan pendugaan karbon menggunakan pendekatan alometrik dan destruktif untuk tingkat semai dan tumbuhan bawah. Plot yang dibangun berukuran 50 m × 50 m sebanyak 14 plot. Berdasarkan hasil analisis NDVI, kelas kerapatan terbagi menjadi kelas 1 (0,321–0,485), dan kelas 2 (0,485–0,746). Komposisi vegetasi di zona rehabilitasi TNGHS terdiri atas 103 jenis tumbuhan dan didominasi oleh rasamala (Altingia excelsa). Rata-rata biomassa dan konsentrasi karbon berdasarkan kelas kerapatan yang diperoleh masing-masing sebesar 296,55 ton/ha dan 139,38 ton/ha. Konsentrasi karbon memiliki korelasi kuat dengan LBDS (r = 95,5%). Nilai NDVI berkorelasi paling tinggi dengan kerapatan pohon per hektar
DESIGN AND IMPLEMENTATION OF PIEZOELECTRIC TRANSDUCER TO IMPROVE FISHING EFFICIENCY ON BAGAN BOAT
Full text linkThe decline in fish catches among bagan boats in Labuhan Jambu, Sumbawa District, is caused by overfishing, illegal fishing, and climate change. To address this issue, technological innovations such as sonar systems that emit acoustic signals to attract fish are necessary. This study aims to design piezoelectric transducers and transmitter drivers capable of emitting acoustic frequencies that effectively attract fish around bagan boats, thereby increasing catch yields. The methodology included system design, fabrication, and testing. The developed transducer operates across a frequency range of 1–75 kHz, and field tests were carried out by installing the transducer beneath the bagan boat. Results indicated that fish responded quickly to frequencies between 500–800 Hz, as evidenced by the appearance of bubbles on the water surface, suggesting fish presence. The main species caught included pelagic fish, skipjack, and squid. Fish catches increased by approximately 2–3 times compared to conventional methods. The transducer and transmitter driver using piezoelectric materials were successfully developed and functioned effectively. The final prototype was capable of emitting acoustic frequencies from 1 Hz to 100 kHz. This innovation demonstrates the potential of piezoelectric transducer technology to significantly enhance fish catches in bagan boat operations in Labuhan Jambu.
Keywords: Driver transmitter, bagan boat, piezoelectric, transduce
Diversity of Insect Species in PT Sumber Graha Sejahtera of Production Forest in West Wara District, Luwu Regency
No full textInsects are the most numerous groups of organisms in the phylum of Arthropods and have a very important role in the continuity of ecological functions. This study aims to determine the diversity of nocturnal and diurnal insect species in PT. Sumber Graha Sejahtera of production forest area in West Wara District. This study used 2 methods are plot and line transect. The traps used are Light traps for nocturnal insects used on 5 plot and Sweep Net for diurnal insects used on 3 line transect. The results showed that there were 36 species of insects consisting of 14 nocturnal species and 22 diurnal species. The diversity index of nocturnal insects were included in the medium category (2.57) with the highest population density found in the species Aedes albopictus which is 0.0160, while the diversity index of diurnal insects were included in the high category (3.02) with the highest population density found in the species Valanga nigricornis which is 0.0056
Characteristics of Microplastic in Selected Marine Sponges from Pasir Putih Situbondo, East Java, Indonesia
Full text linkMicroplastics (MPs) are global concern due to their presence in various ecosystems and their tendency to have a negative impact on organisms. MPs are plastic fragments with a small size ranging from >1 μm to <5 mm, which are easily ingested by marine organisms, including marine sponges. As filter-feeding organisms, sponges can accumulate MPs in their bodies. This study aims to analyze the physical and chemical characteristics and the abundance of MPs in seawater and sponges. Three species of marine sponges (Xestospongia testudinaria/XT, Aaptos suberitoides/AS, and Clathria sp./CR) with ten replicate samples were collected from Batu Lawang reef in Pasir Putih, Situbondo, East Java, Indonesia. MPs samples were also collected from the water column (surface and sea bottom at a depth of ±6-7 m). Analysis of physical characteristics (shape, color, and size) performed using a stereo microscope and Optilab, whilst chemical characteristics (type of polymer) was analyzed using ATR-FTIR. A one-way ANOVA test followed by Tukey\u27s HSD (both at p = 0.05) were performed to determine the difference in MPs density from each species. There was no significant difference in term of density in XT and AS, with average density of 60.6 and 66.9 particles/g wet weight (ww), respectively. The density in CR was significantly higher, with the value of 86.7 particles/g (ww). In the water column, the density was 20-27 particles/L (surface sample) and 37-84 particles/L (sea bottom). All particles dominated by black fragments with sizes ranging from 0 to 60 μm, and the polymer type is polypropylene (PP)
Mitigating the Inhibitory Effect of Tannins on β-Glucosidase Activity Using Tannase from Lactiplantibacillus plantarum
Full text linkTannins are a diverse group of plant-derived polyphenols with a hallmark property to bind to various biomolecules. Their binding with enzymes in specific ways leads to the loss of their enzymatic potential. A similar phenomenon is postulated in the case of tannins from fruits inhibiting the β-glucosidase activity, causing lesser hydrolysis of glycosidically bound volatiles in fruit juices. We first demonstrated that tannins, viz. tannic acid and epigallocatechin gallate, significantly inhibited β-glucosidase activity. Next, the cell-free supernatant (CFS) of Lactiplantibacillus plantarum, which is known to have tannase activity, was found to de-repress β-glucosidase inhibition caused by tannins. Our results indicate that tannase, along with β-glucosidase, can be a useful strategy for hydrolysing glycosidic phytochemicals for the release of bioactive chemicals
Karakterisasi fisikokimia beras analog porang (Amorphophallus muelleri) dengan penambahan Spirulina platensis
Full text linkBeras analog merupakan pangan fungsional yang dirancang menyerupai beras konvensional namun diproduksi dari bahan non-beras. Penelitian ini mengembangkan beras analog porang yang diperkaya Spirulina platensis untuk meningkatkan nilai gizi dan aktivitas antioksidan. Variasi 4 konsentrasi S. platensis (0%, 1,5%, 3%, dan 4,5%) diuji menggunakan rancangan acak lengkap. Hasil uji sensori menunjukkan bahwa formulasi 1,5% paling disukai secara signifikan (p<0,05) sehingga dipilih untuk karakterisasi lebih lanjut. Berdasarkan basis kering, produk terpilih mengandung 92,2% karbohidrat, 2,73% protein, dan 57% serat pangan. Waktu pemasakan 7,53 menit dengan daya serap air 129,2% dan densitas kamba 0,47 g/mL. Skrining fitokimia mengonfirmasi adanya flavonoid, fenol, dan saponin. Aktivitas antioksidan tergolong kuat dengan nilai IC₅₀ sebesar 47,10 µg/mL menunjukkan kemampuan penangkal radikal yang signifikan. Kebaruan penelitian ini terletak pada kombinasi unik porang, kentang, dan Spirulina yang sebelumnya belum pernah diterapkan dalam pengembangan beras analog. Formulasi ini mengintegrasikan serat pangan tinggi dari porang, fungsi pati dari kentang, serta senyawa bioaktif dari Spirulina sehingga menghasilkan produk dengan kualitas gizi dan sifat fungsional yang lebih baik. Secara keseluruhan, beras analog porang dengan Spirulina menunjukkan penerimaan konsumen yang baik dan bioaktivitas tinggi sehingga berpotensi dikembangkan sebagai pangan fungsional yang menjanjikan.Analog rice is a functional food designed to resemble conventional rice but is produced from non-rice sources. This study developed porang analog rice enriched with Spirulina platensis to improve its nutritional and antioxidant properties. The variation of four concentrations of S. platensis (0, 1.5, 3, and 4.5%) was evaluated using a completely randomized design. Sensory evaluation indicated that the 1.5% formulation was significantly preferred (p < 0.05) and selected for further analysis. On a dry basis, the optimized product contained 92.2% carbohydrates, 2.73% protein, and 57% of dietary fiber. Its cooking time was 7.53 min, with 129.2% water absorption and a bulk density of 0.47 g/mL. Phytochemical screening confirmed the presence of flavonoids, phenolic compounds, and saponins. The antioxidant activity was classified as very strong, with an IC₅₀ of 47.10 ppm, demonstrating significant radical scavenging potential. The novelty of this research lies in the unique combination of porang, potato, and Spirulina, which has not been previously applied in the development of analog rice. This formulation integrates the high dietary fiber content of porang, the starch functionality of potato, and the bioactive compounds of Spirulina, resulting in a product with enhanced nutritional quality and functional properties. Overall, porang analog rice with spirulina showed strong consumer acceptance and bioactivity, highlighting its potential as a promising functional food
Angiotensin converting enzyme inhibition activity of seaweed salt from Sargassum polycystum and Ulva lactuca
Full text linkPenyakit hipertensi termasuk silent killer yang menyumbang angka kematian terbesar di Indonesia. Tingginya risiko terkena penyakit ini disebabkan oleh pola hidup yang tidak sehat salah satunya konsumsi natrium yang melebihi batas asupan harian. Rumput laut dapat dimanfaatkan sebagai bahan baku garam sehat yang rendah natrium. Penelitian ini bertujuan untuk menentukan aktivitas angiotensin converting enzyme-inhibitor (ACE-I) terbaik dari garam rumput laut. Bahan baku rumput laut diambil dari jenis Sargassum polycystum dan Ulva lactuca. Garam rumput laut diproduksi melalui perendaman tepung rumput laut dengan akuades (1:10), ekstraksi pada suhu 40°C selama 10 menit, pengeringan filtrat pada suhu 60°C selama 48 jam, dan penghalusan kristal hasil pengeringan. Parameter yang dianalisis meliputi cemaran logam berat, kandungan mineral dan rasio Na/K, total fenol, flavonoid, florotanin, kadar protein terlarut, peptida terlarut, dan ACE-I. Garam S. polycystum dan U. lactuca terdeteksi mengandung mineral Ca, K, Na, Mg, Cu, Fe, dan Zn. Garam rumput laut bebas dari cemaran logam berat. Garam S. polycystum memiliki potensi sebagai pencegah hipertensi yang lebih baik dengan rasio Na/K 0,50, total fenolik 381±0,002 mg GAE/g sampel, total flavonoid 479±0,003 mg QE/g sampel, total florotanin 270±0,001 mg PGE/g sampel, kadar protein terlarut 0,31±0,006 mg/g, dan peptida terlarut 0,043±0,004 mg/g. Nilai penghambatan ACE (IC50) garam S. polycystum sebesar 128,32±1,35 μg/mL dan U. lactuca 1.454,88±0,03 μg/mL. Garam rumput laut S. polycystum memiliki efek penghambatan ACE-I terbaik dibandingkan U. lactuca.Hypertension is a silent killer that contributes to the highest death rate in Indonesia. The high risk of developing this disease is caused by an unhealthy lifestyle, including excessive sodium consumption. Seaweed can be used as a raw material for healthy salt that is low in sodium. This study aimed to determine the best angiotensin converting enzyme-inhibitor (ACE-I) activity from seaweed salt. Raw seaweed materials were obtained from Sargassum polycystum and Ulva lactuca species. Seaweed salt was produced by soaking seaweed flour with distilled water (1:10), extracting at 40°C for 10 min, drying the filtrate at 60°C for 48 h, and refining the crystals from the drying process. The parameters analyzed included heavy metal contamination, mineral content and Na/K ratio, total phenol, flavonoids, phlorotannins, dissolved protein levels, dissolved peptides, and ACE-I activity. S. polycystum and U. lactuca salts were detected to contain minerals Ca, K, Na, Mg, Cu, Fe, and Zn. Seaweed salt is free from heavy metal contamination. S. polycystum salt has the potential to be a better hypertension preventative with a Na/K ratio of 0.50, total phenolics 381±0.002 mg GAE/g sample, total flavonoids 479±0.003 mg QE/g sample, total phlorotannins 270±0.001 mg PGE/g sample, soluble protein content 0.31±0.006 mg/g, and soluble peptides 0.043±0.004 mg/g. The ACE inhibition values (IC50) of S. polycystum salt and U. lactuca were 128.32±1.35 μg/mL and 1,454.88±0.03 μg/mL. S. polycystum seaweed salt has the best ACE-I inhibitory effect compared to U. lactuca
The Morphology of Seed-Bearing Plants in The Qur’an: A Thematic Analysis of Tantawi Jawhari and Tafsir Ilmi by the IndonesianMinistry of Religious Affairs
No full textThe Qur\u27an\u27s Natural Phenomena (Āyāt Kauniyyah) verses contain scientific clues, including one on seed-bearing plant morphology. The study aimed to explain Qur\u27anic references to seed-bearing plant morphology, as well as the interpretation of these verses in Tantawi Jauhari\u27s Tafsir Al-Jawâhir fî Tafsîr Al-Qur\u27ân Al-Karîm and Lajnah Pentashihan Mushaf Al-Qur\u27an\u27s Tafsir \u27Ilmi Tumbuhan dalam Perspektif Al-Qur\u27an dan Sains. The qualitative approach used in this study was library research, with data gathered from a variety of relevant sources. The Qur\u27an is interpreted using the Al-Maudhu\u27i (thematic) methods. Both methods aimed to generate descriptive data by observing Qur\u27anic chapters and verses, as well as providing scientific insights into the subject. The Qur\u27an mentions seed-bearing plant morphology through physical descriptions and metaphors (amthāl) in 26 words throughout 39 chapters and 87 verses. The verses that provide complete interpretation of plant morphology in Tafsir Al-Jawâhir fî Tafsîr Al-Qur\u27ân Al-Karîm include Al An\u27am/6:99, which addresses floral morphology; An Naml/27:60, which examines roots, stems, and leaves; and Yasin/36: 80, which concentrates on the leaf. Meanwhile, in Tafsir \u27Ilmi Tumbuhan dalam Perspektif Al-Qur\u27an dan Sains, Al An\u27am/6:99 is interpreted in terms of the "green substance" in plants, with a full description of the photosynthesis process related to At Takwir/81:17−18, Yasin/36:80, and Al Waqi\u27ah/56:71−72. Then, Al An\u27am/6:95 describes seeds as a component of plant development.
Keywords: Al-Qur’an, plant morphology, scientific exegesis, seed-bearing plants, Tantawi Jauhar