IPB University (Indonesian: Institut Pertanian Bogor, lit. 'Bogor Agricultural Institute', abbreviated as IPB) is a state-run agricultural university based in the regency of Bogor, Indonesia.The institute began as an agricultural school formed by the Dutch colonial regime in the early 20th century. After independence it was part of the University of Indonesia before becoming an independent institute on September 1, 1963. Prof. Dr. Arif Satria, S.P., M.Si. serves as its director.
The issue of oil pollution in aquatic environments necessitates a solution by developing an efficient, and costeffective adsorbent. This research studied the adsorption characteristics of oil pollutant component representatives (benzene, toluene, and xylene) on silica-coated magnetic iron sand (MIS@SiO2) modified with three types of hydrophobic organosilanes, including methyltriethoxysilane (Me), phenyltriethoxysilane (Ph), and hexadecyltrimethoxysilane (Hd), denoted MIS@SiO2/Me, MIS@SiO2/Ph, and MIS@SiO2/Hd, respectively. The organosilane concentrations were varied at 5, 10, 15, and 20 mmol, with a constant weight of 0.5 g MIS and 1 mol NaSiO3. The results showed that the optimal contact times for benzene, toluene, and xylene were 210, 150, and 180 min, respectively, with optimal concentrations of 150 mg/L, 100 mg/L, and 50 mg/L. The maximum adsorption capacities obtained were 99.64 mg/g for benzene and 114.29 mg/g for toluene using MIS@SiO2/Hd3 (15 mmol), and 135.71 mg/g for xylene using MIS@SiO2/Ph2 (10 mmol). The adsorption kinetics followed the pseudo-second-order model, while the adsorption isotherm conformed to the Freundlich model. These findings highlight the potential of the developed material as an effective adsorbent for mitigating oil pollution in aquatic environments.
The development of digital technology in Indonesia has encouraged various sectors to transform towards digital-based services, including the animal health industry. Satwagia Mobile is an application designed to provide digital pet health and care services, including online consultations, vaccination bookings, grooming, and pick-up and drop-off services. This study aims to analyze the user experience (UX) and user satisfaction with the Satwagia Mobile application. The research method used a quantitative approach with primary data collection through an online survey using a Google Form questionnaire. The study sample consisted of 100 respondents who had made at least two transactions on the Satwagia Mobile application. The results showed that the user experience was generally in the fairly good category, with the highest scores in the Stimulation (3.10) and Perspicuity (3.09) dimensions, indicating that users felt motivated and easily understood the application's instructions. However, the Efficiency (2.97) and Dependency (2.90) dimensions still require improvement, particularly in service speed and flexibility in selecting a veterinarian. The user satisfaction level was in the fairly satisfied category (2.91), indicating potential for development to improve service convenience, reliability, and innovation. These findings are expected to be input for Satwagia Mobile developers in improving the quality of user experience and satisfaction.
Consumption of sweet corn has increased from 2021 to 2024. To meet the growing market demand, sweet corn production must be carried out in a sustainable, economical, efficient, and environmentally friendly manner. The use of a combination of sludge, rice husk charcoal, compost, and inorganic fertilizer was tested to enhance corn plant growth and productivity. The study was conducted at the Cikabayan Experimental Farm, IPB University, using a Randomized Complete Block Design (RCBD) with five treatment levels and three replications. The results showed that treatment S2H1 (75% sludge + 75% rice husk charcoal + 30% compost + 75% NPK) exhibited the best vegetative and generative growth (stem diameter, number of leaves, ear length, biomass weight per plot, and ear weight per plot). The S1H1 treatment (100% sludge + 75% rice husk charcoal + 30% compost + 75% NPK) showed improved biological and chemical soil quality (pH, organic carbon, total nitrogen, total phosphorus, and base saturation). All treatments resulted in an R/C ratio above 1, indicating economically viable potential. The results indicate demonstrate that the combined use of sludge and organic materials allows NPK fertilizer inputs to be reduced by 25%, supporting sustainable agriculture.
Monodiacylglycerols are widely used as emulsifiers in various food products, but their macroscopic properties, such as SFC, melting point (MP), and crystallization point (CP), are difficult to predict, especially if they are derived from various vegetable oils with different fatty acid compositions. Mathematical modelling of fatty acid composition and acylglycerol profiles can quickly predict their properties, avoid costly trials or production problems, and most importantly, maintain product quality consistency. This study used several monodiacylglycerols (MDAG) samples with different fatty acid and acylglycerol compositions to generate accurate mathematical models. A linear regression model was used as a simple and easy-to-understand model. The results showed that the dominant fatty acid composition and acylglycerol profile could predict the SFC at 40, 50, 60 and 70 degrees C with R2 (adj) of 0.8229; 0.9212; 0.9182 and 0.7287, respectively. The dominant fatty acid composition and acyl glycerol profile can also predict the melting point and crystallization point of MDAG with R2 (adj) of 0.8714 and 0.8298, respectively. This information will be very useful for the food industry to design fat products with expected SFC, melting point and crystallization point.
Aflatoxin B1 (AFB1) is a potent mycotoxin that threatens food safety and human health. This study investigated the capacity of yeast isolates to tolerate and detoxify AFB1 and performed genomic characterization of the most active strain. Among several Pichia and Wickerhamomyces isolates, Pichia kudriavzevii RWT exhibited the strongest tolerance, maintaining growth at AFB1 concentrations up to 200 ppb and decontaminating 26.5
