http://repository.ipb.ac.id/handle/123456789/5351 Wed, 16 Sep 2026 09:29:43 GMT 2026-09-16T09:29:43Z http://repository.ipb.ac.id/handle/123456789/179890 A Story of Carbohydrates in Plants: From a Basic Concept to Advanced Technology Syaifullah, Syahnada Jaya Carbohydrates are crucial to natural macromolecules in plants. Carbohydrates can be a substrate to produce energy and gene expression regulator for plant growth in entire plant life cycle (Hill, 1998; KE Koch, 1996; Smeekens, 2000; Smeekens et al., 2010). The carbohydrate function is strongly related to its capability to be transformed from one substance into others (MacNeill et al., 2017; Ruhland & Wolf, 1936) (Fig. 1) especially being able to provide building blocks for most of essestial constituents in plant such as amino acid, fatty acid and some other compounds (Smeekens, 2000). Carbohydrate is primary final product of photosynthesis in green plants (Blechschmidt-Schneider et al., 1989). Plants produce carbohydrates from free C02 in the air and H20 taken by roots which is for each carbohydrate product, 02 will be released (Baslam et al., 2021). Long time ago, photosynthesis was broadly thought in the school consisted of two major reactions: light and dark reaction and it was inspired by a historical report in photosynthesis by Blackman in 1905 (Blackman, 1905). Later, the carbon reaction replaced dark reaction when some important fact was revealed about photosynthesis reaction light dependency. ... Mon, 01 Jun 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/179890 2026-06-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173893 Inovasi Alat Penetas dan Separator Fisik-Fototaktik Artemia spp. Guna Mendukung Bioassay Toksisitas Farid, Muhammad; Widikdo, Wisnu; Kurniawanti; Putri, Ferucha F. Pengujian hayati (bioassay) menggunakan Artemia spp. populer karena efisien, praktis, dan minim kendala etika hewan. Namun, pemisahan pasca-tetas antara nauplius hidup, cangkang kosong (chorion), dan kista mati sering kali menyulitkan, sehingga berpotensi mengotori media uji serta mengaburkan akurasi nilai letalitas (LC50). Penelitian ini bertujuan merancang dan menguji inovasi alat penetas sekaligus pemisah mekanis-biologis sederhana berbasis kompartemen ganda dengan sistem sekat geser. Menggunakan kotak makan plastik portabel, alat ini memanfaatkan perbedaan sifat fisik material (cangkang mengapung dan kista mati tenggelam) serta perilaku fototaktik positif dari nauplius aktif. Hasil pengujian menunjukkan bahwa desain sekat geser ini mampu memanen populasi biomassa nauplius Artemia spp. yang homogen dengan kemurnian tinggi secara instan tanpa merusak fisik larva. Inovasi ini menawarkan solusi aplikatif yang ekonomis dan efektif untuk meningkatkan efisiensi operasional pengujian toksisitas di laboratorium. Thu, 01 Jan 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173893 2026-01-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173637 Antibacterial Activity of Synthetic ZnO/Pectin on Staphylococcus aureus Angelina, Putri Nur The hydrothermal method is commonly used to synthesize ZnO nanoparticles because it produces products with high crystallinity and purity. However, this method is relatively time-consuming. This research combines hydrothermal and precipitation methods to produce ZnO in a shorter time. ZnO was also synthesized using a capping agent to control the smaller particle size as confirmed by the aging time needed to precipitate the particles. The synthesized ZnO nanoparticles can be added to food and beverage products as zinc additives and antibacterial agents which are beneficial to the body. Furthermore, the ZnO nanoparticles were tested for their antibacterial activity using Staphylococcus aureus as a model for gram-positive bacteria. Mon, 01 Jun 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173637 2026-06-01T00:00:00Z http://repository.ipb.ac.id/handle/123456789/173530 Antibacterial Activity Of Synthetic Zno/Pectin On Staphylococcus Aureus Angelina, Putri Nur The hydrothermal method is commonly used to synthesize ZnO nanoparticles because it produces products with high crystallinity and purity. However, this method is relatively time-consuming. This research combines hydrothermal and precipitation methods to produce ZnO in a shorter time. ZnO was also synthesized using a capping agent to control the smaller particle size as confirmed by the aging time needed to precipitate the particles. The synthesized ZnO nanoparticles can be added to food and beverage products as zinc additives and antibacterial agents which are beneficial to the body. Furthermore, the ZnO nanoparticles were tested for their antibacterial activity using Staphylococcus aureus as a model for grampositive bacteria. Mon, 01 Jun 2026 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/173530 2026-06-01T00:00:00Z