Assessment of In vitro Potential of Turmeric Crude Extract Against Klebsiella pneumoniae on Smoked Nile Tilapia (Oreochromis niloticus)
Louie Jay T. Biquio
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Clutha C. Pongan
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Renz Ivan M. Sabado
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Jayson V. Bernabe
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Joy C. Gonzales
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Laika Camille S. Sapigao
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Kelvin Ronald DL. Nudo
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Greg Valen M. Dela Cruz
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Charish A. Cabanisas
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Melissa D. Pasion
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Jonalyn M. Alonzo
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Richelle Mae B. Butial
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Monica M. Edralin
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Hanz Joshua M. Guillermo
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Joanna S. Policarpio
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Carl Jayson M. Sirot
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Princess Allen O. Valdez
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Noel Loie Zamora
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
Alvin T. Reyes *
Department of Aquatic Post-Harvest, College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.
*Author to whom correspondence should be addressed.
Abstract
This study investigated the potential of turmeric (Curcuma longa) crude extract to inhibit Klebsiella pneumoniae in smoked Nile tilapia. Initial tests showed that 5.0 mL of a 0.5 g/mL extract concentration exhibited significant antibacterial activity, resulting in a marked reduction in bacterial growth compared to other treatments. To confirm its effectiveness, the optimal extract from the preliminary test was applied to smoked fish experimentally infected with Klebsiella pneumoniae. The results indicated that the optimal extract had fewer bacterial count up to Day 5 as compared to control, but showed decreased efficacy by Day 5. Further research is needed to enhance its effectiveness and address limitations, promoting sustainable food safety practices in the aquatic food industry.
Keywords: Food safety, Klebsiella pneumoniae, smoked fish, turmeric