3 research outputs found
“Influence of Biosynthesized ZnO Nanoparticles from Labeo calbasu Skin Mucus on the Ripening of Tomato (Solanum lycopersicum)”
No full textPostharvest losses and rapid ripening significantly limit the shelf life and marketability of tomatoes (Solanum lycopersicum). This study evaluated the effect of biosynthesized zinc oxide (ZnO) nanoparticles, synthesized using skin mucus of Labeo calbasu, incorporated in a chitosan-glycerol coating on the ripening and postharvest quality of mature, firm tomatoes over 15 days at ambient conditions (25 ± 2 °C). Untreated control fruits ripened naturally, attaining full red coloration by day 15, whereas tomatoes treated with ZnO-chitosan-glycerol coatings (200 ppm ZnO) showed delayed ripening, remaining yellow to pink throughout the storage period. The nanoparticle treatment significantly reduced weight loss and inhibited microbial spoilage, thereby maintaining firmness and overall fruit quality. Among the treatments, the concentration (200 ppm ZnO) was most effective in slowing ripening and preserving tomato quality. These findings demonstrate that Labeo calbasu-derived ZnO nanoparticles combined with chitosan and glycerol provide a natural, eco-friendly coating that effectively extends shelf life and mitigates postharvest deterioration of tomatoes, highlighting its potential in sustainable postharvest management.
 
Impact of Temperature and pH in modulating the behavioural changes of Labeo calbasu
No full textFish behavior is strongly influenced by environmental variables, particularly temperature and pH, which play crucial roles in survival, growth, and reproduction. The present study was carried out to evaluate the behavioral responses of Labeo calbasu under varying temperature (25–35°C) and pH (6-9) conditions. The study was conducted for a period of seven weeks, with the experimental fish kept in different pond enclosures under controlled parameters. Behavioral responses such as swimming activity, feeding response, aggression, and resting pattern were recorded. The results indicated that at moderate temperatures and pH (25–28°C; pH 6-7), fish displayed normal activity and feeding behavior with aggression. However, under extreme temperature and pH conditions (32–35°C; pH 8-9), swimming activity and feeding rate decreased, aggression was absent, and resting behavior was prolonged., qualitative trends suggested that extreme pH and temperature conditions negatively affect the behavior of Labeo calbasu. The findings highlight the importance of maintaining suitable environmental conditions for aquaculture practices and provide a baseline for understanding stress-induced behavioral changes in freshwater fishes
Impact of Temperature and pH in modulating the behavioural changes of Labeo calbasu
No full textFish behavior is strongly influenced by environmental variables, particularly temperature and pH, which play crucial roles in survival, growth, and reproduction. The present study was carried out to evaluate the behavioral responses of Labeo calbasu under varying temperature (25–35°C) and pH (6–9) conditions. The study was conducted for a period of seven weeks, with the experimental fish kept in different pond enclosures under controlled parameters. Behavioral responses such as swimming activity, feeding response, aggression, and resting pattern were recorded. The results indicated that at moderate temperatures and pH (25–28°C; pH 6–7), fish displayed normal activity and feeding behavior with aggression. However, under extreme temperature and pH conditions (32–35°C; pH 8–9), swimming activity and feeding rate decreased, aggression was absent, and resting behavior was prolonged., qualitative trends suggested that extreme pH and temperature conditions negatively affect the behavior of Labeo calbasu. The findings highlight the importance of maintaining suitable environmental conditions for aquaculture practices and provide a baseline for understanding stress-induced behavioral changes in freshwater fishes
