| 학회 | 한국화학공학회 |
| 학술대회 | 2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 | 28권 1호, p.1329 |
| 발표분야 | [주제 12] 화학공학일반(부문위원회 발표) |
| 제목 | Design of Liquid Crystal Based Self-Reporting System for Food Poisoning Bacteria |
| 초록 | Sensitive, selective, and rapid detection of salmonella which causes food-borne diseases is required in terms of food safety and prevention of pathogenic infection. However, previous methods like polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) require laborious and time-consuming process, and trained personnel. In this work, we offer simple and generalizable approach to realize rapid detection of specific food poisoning bacteria (salmonella) by liquid crystals (LCs) based system integrated with organic ionics (OIs). Specifically, OIs are self-assembled at the aqueous-LC interface and cause vertical LC ordering. Under the incubation of the LCs in the aqueous solution with peptides, however, we observe gradually reoriented LC, which leads to the formation and growth of birefringent domains after ~1.5 hours. Surprisingly, we observe the presence of salmonella to facilitate the formation of domains and their grow rate is dependent on the population of salmonella, which enables the rapid detection of target bacteria within 20 min without any complicated procedure. This work was supported by NRF-2021R1A4A1030944 & 2021R1A2C2095010 |
| 저자 | 최예나1, 최진강1, 김원식1, 손창윤1, 이민재2, 김영기1 |
| 소속 | 1포항공과대, 2군산대 |
| 키워드 | 재료(Materials) |
| 원문파일 | 초록 보기 |
