พารามิเตอร์ที่เหมาะสมต่อการยับยั้งการเจริญเติบโตของจุลินทรีย์ในกุ้งขาวแวนนาไมโดยน้ำกระตุ้นด้วยพลาสมา

Abstract

This research aimed to study the appropriate parameters growth inhibition of microbial in vannamei white shrimp by plasma activated water (PAW) by plasma technology to generate high concentration hydroxyl radical (OH•) in hydrogen peroxide (H2O2 ). The study factors under our interested consist of premix argon and oxygen gas (Ar 98% and O2 2%) flow rate and exposure time, the experimental conditions constructed based on a design of experiment approve. Full factorial design at two levels along with five center points were used determine all experimental conditions. From our experimental results, we found that premix gas flow rate at 25 I/min and exposure time at 120 min optimal the last result. The concentration of H2O2 is 12.43 mg/l at the optimal condition lead to reduce an overall microorganisms 41.63% (0.72 log CFU/g from 5.98 log CFU/g) with 10 min treatment time and the nutritional analysis of vannamai white shrimp after the experiment contained a crude protein ether extract ash and carbohydrates equal to 18.74%, 1.78%, 1.05% and 56.90% respectively.