Kim Su-Min, Hwang Hee-Jeong, Cheigh Chan-Ick, Chung Myong-Soo
1Department of Food Science and Engineering, Ewha Womans University, Seoul, 03760 South Korea.
2Department of Food and Food Service Industry, Kyungpook National University, Sangju, 37131 South Korea.
Food Sci Biotechnol. 2018 Aug 19;28(1):281-287. doi: 10.1007/s10068-018-0456-4. eCollection 2019 Feb.
This study investigated the microbial inactivation effects of intense pulsed light (IPL) treatment as an alternative to chemical treatment for decontaminating the radish and pak choi seeds. The values (which indicate the resistance to IPL treatment) for radish and pak choi seeds were 24.50, 20.81 J/cm, respectively. This resistance exhibited by seeds to IPL treatment is related to their surface roughness. Their Rq (the root-mean-square roughness), average surface roughness (Ra), and 10-point height roughness (Rz) values indicate that each crevice on a rough surface could shelter microorganisms from IPL. Viability tests of seeds exposed to IPL treatment indicated that the average germination rates of treated seeds exceeded 85% on day 3 of germination, which is considered as an acceptable criterion for germination. Also, on day 5 of germination the average shoot lengths of sprouts exposed to IPL did not differ significantly from those of untreated seeds.
本研究调查了强脉冲光（IPL）处理对萝卜和小白菜种子进行去污的微生物灭活效果，以替代化学处理。萝卜和小白菜种子的 值（表示对IPL处理的抗性）分别为24.50、20.81 J/cm²。种子对IPL处理表现出的这种抗性与其表面粗糙度有关。它们的Rq（均方根粗糙度）、平均表面粗糙度（Ra）和十点高度粗糙度（Rz）值表明，粗糙表面上的每个缝隙都可以保护微生物免受IPL的影响。对接受IPL处理的种子进行的活力测试表明，处理过的种子在发芽第3天的平均发芽率超过85%，这被认为是可接受的发芽标准。此外，在发芽第5天，接受IPL处理的芽苗的平均芽长与未处理种子的芽长没有显著差异。
