Synergistic germination-promoting and antimicrobial effects of ultrasonic and slightly acidic electrolyzed water treatments on peanut seeds

This study investigated the effects of ultrasonic treatment combined with slightly acidic electrolyzed water (SAEW) on peanut seed germination, focusing on germination percentage, microstructure, microbial loads, and microbial diversity. The results demonstrated that the combination of ultrasound and 70 ppm SAEW synergistically enhanced peanut germination, achieving an impressive germination rate of 90 %. Compared to the control group, the treatment involving ultrasound in conjunction with SAEW resulted in a reduction of total microbial counts by 7.84 and 5.52 log₁₀ CFU/g on days 1 and 2, respectively. Furthermore, mold and yeast growth were significantly inhibited due to the synergistic action between SAEW and ultrasound. The cavitation bubbles generated by ultrasound likely facilitated the penetration of SAEW into cells, thereby enhancing its effectiveness in increasing cell membrane permeability. This study provides valuable insights into a sustainable and effective approach for improving peanut germination while simultaneously controlling microbial contamination.