http://repository.ipb.ac.id/handle/123456789/25 Undergraduate theses of IPB's bachelor student Thu, 14 May 2026 03:45:54 GMT 2026-05-14T03:45:54Z http://repository.ipb.ac.id/handle/123456789/173079 PENGARUH PENGAWETAN MENGGUNAKAN BORAKS DAN ASAM BORAT TERHADAP KARAKTERISTIK DAN SIFAT MEKANIS TEKAN SERTA LENTUR CAKRAM (Flat Ring Flexure) BAMBU BETUNG RAADI, ASYURA ZAHRA LUTFFIA Bambu betung memiliki potensi besar sebagai material konstruksi, namun rentan terhadap serangan organisme perusak. Penelitian ini bertujuan untuk mengkaji pengaruh pengawetan menggunakan boraks dan asam borat terhadap sifat mekanis tekan dan lentur cakram bambu betung. Pengawetan dilakukan dengan metode perendaman selama 72 jam dengan berbagai perlakuan konsentrasi, rasio bahan pengawet serta posisinya dalam buluh bambu. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi pengawet meningkatkan nilai retensi secara signifikan, dengan nilai tertinggi (3,82 kg m?³) pada konsentrasi 7,5% dengan rasio boraks:asam borat 0:1 pada bagian pangkal. Pengawetan cenderung meningkatkan kadar air contoh uji dibandingkan kontrol akibat penetrasi larutan. Secara keseluruhan, perlakuan pengawetan memberikan pengaruh yang nyata terhadap sifat fisis dan mekanis, di mana kombinasi rasio dan konsentrasi yang tepat diperlukan untuk mencapai efektivitas pengawetan optimal tanpa menurunkan kekuatan bambu secara drastis. Kata kunci: Asam borat, bambu betung, boraks, pengawetan, lentur cakram; Betung bamboo has great potential as a construction material but is highly susceptible to wood-destroying organisms. This study aims to investigate the influence of borax and boric acid preservation on the mechanical properties compression and flexural strength of betung bamboo. Preservation was conducted through a 72-hour soaking method with various concentration treatments, preservative ratios and their positions in the bamboo culms. The results showed that increasing the preservative concentration significantly increased the retention value, with the highest value (3.82 kg m?³) found at 7.5% concentration with a 0:1 borax-to-boric acid ratio at the bottom part. Preservation tended to increase the moisture content of the samples compared to the control due to solution penetration. Overall, the preservation treatments significantly influenced physical and mechanical properties, indicating that appropriate combinations of ratio and concentration are required to achieve optimal preservation effectiveness without drastically reducing the bamboo's strength. Keywords: Borax, boric acid, betung bamboo, flat ring flexure, preservation. Thu, 01 Jan 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173079 2026-01-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173077 Potensi Kombinasi Ekstrak Daun Srikaya (Annona squamosa) dan Daun Kelor (Moringa oleifera) Sebagai Antioksidan dan Inhibitor Lipase Pankreas ZADA, ELRAMDA NAFIS Obesitas merupakan kelainan metabolik dengan indeks massa tubuh (IMT) >30 yang meningkatkan risiko penyakit degeneratif seperti penyakit jantung, stroke, dan diabetes. Obat antiobesitas seperti orlistat efektif, namun berpotensi menimbulkan efek samping sehingga diperlukan alternatif dari bahan alami. Penelitian ini bertujuan menentukan efek kombinasi ekstrak etanol 70% daun srikaya (Annona squamosa) dan daun kelor (Moringa oleifera) berdasarkan kadar fitokimia, kapasitas antioksidan, serta aktivitas inhibisi lipase pankreas dariEkstraksi dilakukan menggunakan metode sonikasi, diikuti formulasi kombinasi dan pengujian kadar fenolik total (TPC), flavonoid total (TFC), kapasitas antioksidan metode DPPH dan FRAP, serta inhibisi lipase pankreas. Hasil menunjukkan ekstrak tunggal daun srikaya memiliki aktivitas tertinggi, dengan TPC 95,15 mg GAE/g, TFC 47,57 mg QE/g, DPPH 395,10 mg TE/g, FRAP 476,30 mg TE/g, serta inhibisi lipase 64,15%. Kombinasi ekstrak menunjukkan efek sinergis pada aktivitas DPPH dan inhibisi lipase pankreas, namun cenderung antagonis pada TPC, TFC, dan FRAP.; Obesity is a metabolic disorder characterized by a body mass index (BMI) >30 and is associated with an increased risk of degenerative diseases such as cardiovascular disease, stroke, and diabetes. Anti-obesity drugs such as orlistat are effective; however, they may cause side effects, highlighting the need for natural alternatives. This study aimed to evaluate the effect of a combination of 70% ethanol extracts of sugar apple leaves (Annona squamosa) and moringa leaves (Moringa oleifera) based on phytochemical content, antioxidant capacity, and pancreatic lipase inhibitory activity. Extraction was carried out using a sonication method, followed by formulation of extract combinations and evaluation of total phenolic content (TPC), total flavonoid content (TFC), antioxidant capacity using DPPH and FRAP methods, and lipase inhibition. The results showed that the single extract of sugar apple leaves exhibited the highest activity, with TPC of 95.15 mg GAE/g, TFC of 47.57 mg QE/g, DPPH of 395.10 mg TE/g, FRAP of 476.30 mg TE/g, and lipase inhibition of 64.15%. The extract combination showed synergistic effects on DPPH activity and pancreatic lipase inhibition, but tended to be antagonistic for TPC, TFC, and FRAP. Thu, 01 Jan 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173077 2026-01-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173076 Identifikasi Cendawan Endofit dari Tanaman Leda (Eucalyptus deglupta) dan Potensinya dalam Menghambat Patogen Hawar Daun secara in Vitro RAHMADHANTI, INTAN NUR Tanaman leda (Eucalyptus deglupta) merupakan spesies kehutanan bernilai ekonomis tinggi yang rentan terhadap penyakit hawar daun akibat sistem monokultur. Pengendalian ramah lingkungan dapat dilakukan melalui pemanfaatan cendawan endofit sebagai agen biokontrol. Penelitian ini bertujuan mengidentifikasi cendawan endofit dari E. deglupta secara morfologi dan molekuler serta mengevaluasi potensinya dalam menghambat patogen hawar daun secara in vitro. Sebanyak empat isolat cendawan endofit diuji terhadap tiga patogen (Rhizoctonia sp., Colletotrichum sp., dan Pestalotiopsis sp.) menggunakan metode dual culture. Identifikasi molekuler dilakukan menggunakan analisis filogenetik dengan penanda ITS. Hasil menunjukkan isolat REI9.1 dan DEI6.1 berkerabat dekat dengan Phyllosticta fallopiae, REC19.1 dengan Xenoacremonium recifei, dan DEC1.1 dengan Pseudopithomyces toxicarius. Isolat DEC1.1 menunjukkan daya hambat tertinggi terhadap seluruh patogen (75,39%), sementara REI9.1 tertinggi terhadap Colletotrichum sp. (71,97%), DEI6.1 terhadap Rhizoctonia sp. (77,85%) dan Pestalotiopsis sp. (76,36%), serta REC19.1 terhadap Rhizoctonia sp. (41,63%). Isolat DEC1.1 (Pseudopithomyces toxicarius) berpotensi sebagai agen hayati yang potensial dalam menghambat patogen hawar daun pada tanaman E. deglupta secara in vitro.; The Leda plant (Eucalyptus deglupta) is a forest species with high economic value that is susceptible to leaf blight disease due to monoculture systems. Environmentally friendly disease management can be achieved through the use of endophytic fungi as biocontrol agents. This study aimed to identify endophytic fungi from E. deglupta based on morphological and molecular characteristics and to evaluate their potential to inhibit leaf blight pathogens in vitro. Four endophytic fungal isolates were tested against three pathogens (Rhizoctonia sp., Colletotrichum sp., and Pestalotiopsis sp.) using the dual culture method. Molecular identification was conducted using phylogenetic analysis based on the ITS marker. The results showed that isolates REI9.1 and DEI6.1 were closely related to Phyllosticta fallopiae, REC19.1 to Xenoacremonium recifei, and DEC1.1 to Pseudopithomyces toxicarius. Isolate DEC1.1 showed the highest inhibition against all pathogens (75.39%), while REI9.1 showed the highest inhibition against Colletotrichum sp. (71.97%), DEI6.1 against Rhizoctonia sp. (77.85%) and Pestalotiopsis sp. (76.36%), and REC19.1 against Rhizoctonia sp. (41.63%). Isolate DEC1.1 (Pseudopithomyces toxicarius) shows strong potential as a biocontrol agent in inhibiting leaf blight pathogens in E. deglupta under in vitro conditions. Thu, 01 Jan 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173076 2026-01-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173074 Analisis Strategi Pemasaran Digital pada UMKM Fashion XYZ Menggunakan SWOT dan QSPM GHONIA, NURMAISYA AL UMKM fashion XYZ merupakan usaha yang beroperasi di Kota Bogor dan telah memanfaatkan pemasaran digital sejak tahun 2019. Namun demikian, strategi tersebut belum berjalan secara optimal. Hal ini terlihat dari fluktuasi volume penjualan dan jumlah kunjungan selama tahun 2024 serta tekanan persaingan yang muncul baik dari pelaku UMKM sejenis maupun dari produk luar negeri. Oleh karena itu, penelitian ini bertujuan merumuskan strategi pemasaran digital untuk UMKM fashion XYZ agar mampu bertahan dalam menghadapi berbagai tantangan di industri. Hasil penelitian menunjukkan skor IFE sebesar 2,34 dan EFE 2,69. Pada matriks IE, posisi UMKM fashion XYZ berada pada kuadran V (hold and maintain). Dari analisis SWOT, diperoleh delapan alternatif strategi yang paling relevan bagi UMKM fashion XYZ kemudian diprioritaskan melalui QSPM. Prioritas strategi yang memiliki nilai STAS terbesar yaitu 4,20 adalah riset pasar secara berkala untuk inovasi dan ekspansi. Strategi kedua yang menjadi prioritas selanjutnya dengan nilai STAS 4,14 adalah memperkuat visibilitas melalui event dan kampanye promosi yang berorientasi pada keunggulan untuk menghadapi predatory pricing dan brand switching.; Fashion MSMEs XYZ is a business operating in Bogor City and has utilized digital marketing since 2019. However, its implementation has not yet been optimal. This is reflected in the fluctuations in sales volume and the number of visits throughout 2024, as well as increasing competitive pressure from similar MSMEs and imported products. Therefore, this study aims to formulate an appropriate digital marketing strategy for Fashion MSMEs XYZ in order to remain competitive amid various industry challenges. The results indicate that the IFE score is 2.34 and the EFE score is 2.69. Based on the IE matrix, Fashion MSMEs XYZ is positioned in Quadrant V (hold and maintain). From the SWOT analysis, eight alternative strategies were identified as the most relevant for the business and were then prioritized using QSPM. The top-priority strategy, with the highest STAS value of 4.20, is to conduct regular market research to support innovation and expansion. The second priority strategy, with an STAS value of 4.14, is to enhance visibility through events and promotional campaigns that emphasize competitive advantages in order to address predatory pricing and brand switching. Thu, 01 Jan 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173074 2026-01-01T00:00:00Z