Vol. 8 No. 2 (2026)

Crystal guava (Psidium guajava Linn. cv. Kristal) was known to contain various secondary metabolites, particularly phenolic compounds and flavonoids, which acted as bioactive components with antioxidant potential. Characterization of these compounds is necessary to understand the chemical profile of the crystal guava fruit, especially in the edible portion. The objective of this study was to determine the total phenolic and flavonoid profiles in crystal guava fruit pulp extract with different maturation levels. This study was an experimental laboratory-based analytical study. Fruit pulp…

Dragon fruit plants are long-day plants that require a long photoperiod to induce flowering, making light management an important factor in their productivity. In recent years, their declining yields in Indonesia have been linked to suboptimal flowering induction and fruit cracking, partly related to nutritional imbalances, particularly boron deficiency. This study aims to improve dragon fruit flowering by providing yellow light and adding boron. The study was conducted at the SITH Haurngombong Educational Orchard in Sumedang, using a randomized block design with three factors: light, boron,…

Ramie (Boehmeria nivea L. Gaud.) is considered an important natural fiber crop, particularly due to its profitability. However, its propagation still faces some ultrapractical cases. When typical vegetative styles are used, the number of new shops created is relatively low, which makes large-scale production less effective. To address this conclusion, an in vitro study was conducted on the initial Wonosobo ramie clone. The aim was to determine how different concentrations of 6- benzylaminopurine (BAP) affect apical shoot conformation. Six concentrations of BAP (0, 0.5, 1.0, 1.5, 2.0, and 2.5…

Banyuasin Regency, located in the province of South Sumatra, has the largest area of rubber plantations in Indonesia, with huge potential as biodiesel feedstock, and generates income for rubber planters through the exploitation of the seeds. This study focuses on the value chain of the exploitation of seeds for biodiesel and its economic benefits to the planters using the Hayami method. The snowball and stratified random sampling methods were used to determine the pricing of the seeds. The value chain actors include the rubber planters, the crumb rubber processing and marketing unit, the…

Pollution in rivers is caused by the direct discharge of untreated domestic waste, which is characterised by excessive foam on the water surface. This occurs due to relatively rapid population growth accompanied by limited waste management infrastructure, leading to river water pollution in Indonesia. Therefore, an effective, efficient, environmentally friendly, and low-cost solution is needed, such as a Floating Constructed Wetland (FCW) system using aquatic plants. In this study, the aquatic plant used was Typha latifolia, which was able to treat polluted water in the Kalidami River,…

The chemical composition of sengon wood is ideal for the nutritional needs of fungi, particularly wood fungi. Fungi obtain their energy by degrading the lignocellulosic components (cellulose, hemicellulose, and lignin) found in wood. Although sengon is an excellent substrate, its availability is limited, and its price continues to rise. Potential alternative cultivation media include bamboo and oil palm, which are the natural habitats of Ganoderma lucidum. This study investigates the potential of bamboo sawdust and shredded empty palm oil fruit bunches (EFB) as alternative substrates for…