Current Issue | OnLine Journal of Biological Sciences

Effect of Water Bath Heating on Tannin Content and Quality Improvement Potential of Gambier (Uncaria gambir Roxb.)

Daimon Syukri — 2026-09-23

OnLine Journal of Biological Sciences, Published online: 23 September 2026; doi:10.3844/ojbsci.2026.26.04.077

Gambir (Uncaria gambir Roxb.) is a source of natural phenolic compounds rich in catechins and tannins and has potential as a sustainable industrial raw material. During heating, phenolic compounds may...

Reclamation of Irrigated Lands and Improvement of the Groundwater Regime Under Vertical Drainage Operation

Balzhan Amanbayeva — 2026-09-23

OnLine Journal of Biological Sciences, Published online: 23 September 2026; doi:10.3844/ojbsci.2026.26.04.078

The aim of the study was to identify patterns of seasonal groundwater-level fluctuations and assess the effectiveness of vertical drainage in regulating the reclamation regime of saline lands in Kazak...

Possibilities of Stabilizing Soil Biological Activity by Treating Seeds With a Biological Preparation Based on Phosphate Mobilizing Bacteria in the Conditions of the Aral Sea Region of Kazakhstan

Zhanar Zhumadilova — 2026-09-24

OnLine Journal of Biological Sciences, Published online: 24 September 2026; doi:10.3844/ojbsci.2026.26.04.079

This study examined the effect of Phosphate-Mobilizing Bacteria (PMB) as a pre-sowing treatment for forage crop seeds. The objective was to assess the potential of these bacterial biopreparations to i...

Integrated Assessment of Water Resource Sustainability in the Upper Amojú River Basin, Northern Peruvian Andes

Juan Eduardo Suarez-Rivadeneira — 2026-09-26

OnLine Journal of Biological Sciences, Published online: 26 September 2026; doi:10.3844/ojbsci.2026.26.04.080

This study presents a comprehensive, statistically robust assessment of water resource sustainability in the upper section of the Amojú River Basin, Province of Jaén northern Peruvian Andes, using t...

JAK Inhibitors for Rheumatoid Arthritis: Assessing Efficacy and Safety in Treatment

Anastasia V. Poznyak — 2026-10-08

OnLine Journal of Biological Sciences, Published online: 8 October 2026; doi:10.3844/ojbsci.2026.26.04.081

Rheumatoid Arthritis (RA) is a chronic autoimmune disease characterized by synovial inflammation, progressive joint destruction, and systemic complications. Dysregulated cytokine signaling through the...

Ecological Situation of Poplar Species in the Aral Sea Region of Kazakhstan

Baikenzheyeva Ainur — 2026-09-30

OnLine Journal of Biological Sciences, Published online: 30 September 2026; doi:10.3844/ojbsci.2026.26.04.082

The study was conducted in response to the deteriorating environmental conditions in the Aral Sea region of Kazakhstan, characterized by the degradation of natural ecosystems, loss of biodiversity, an...

Sustainable Technology for Agriculture at Extreme Altitudes: Design and Evaluation of a Sprinkler Irrigation System in a Peruvian High Andean Community

Juan Eduardo Suarez Rivadeneira — 2026-10-02

OnLine Journal of Biological Sciences, Published online: 2 October 2026; doi:10.3844/ojbsci.2026.26.04.083

In high-altitude agroecosystems, erratic rainfall patterns and steep topography severely constrain crop productivity by exposing plants to soil water deficits during critical phenological stages. This...

Strigolactones in Plant Stress Adaptation: Mechanisms and Agricultural Potential

Humayra Ferdus — 2026-10-03

OnLine Journal of Biological Sciences, Published online: 3 October 2026; doi:10.3844/ojbsci.2026.26.04.084

Abiotic stresses have significant negative effects on the growth, development, and productivity of crop plants, which are critical to global agricultural production and ecosystem stability. Strigolact...

Efficiency of Nitrogen Fixation by Rhizobium Strains Associated With White Clover in the Ecuadorian Highlands Biological Nitrogen Fixation by White Clover in Ecuador

Daniela Michell Chuquimarca Mamarandi — 2026-10-04

OnLine Journal of Biological Sciences, Published online: 4 October 2026; doi:10.3844/ojbsci.2026.26.04.085

The objective of this research was to evaluate the nitrogen-fixing capacity of 30 strains of Rhizobium isolated from white clover nodules, collected in the provinces of Pichincha and Cotopaxi under gr...

Production of an Achillea millefolium (Yarrow) Toothpaste to Combat Gum and Tooth Pain

Munashe K. F. Chakamanga — 2026-10-09

OnLine Journal of Biological Sciences, Published online: 9 October 2026; doi:10.3844/ojbsci.2026.26.04.086

Gum inflammation also known as gingivitis is primarily caused by the accumulation of dental plaque that forms on teeth. The inflammation triggers pain in the gums and surrounding tissues due to increa...