초미세기포를 이용한 딸기 성장 모니터링 및 수중의 대장균 제거 = Strawberry Growth Monitoring And E. coli Removal In Water Using Ultra Fine Bubbles

다국어 초록 (Multilingual Abstract)

In this study, UFBs of less than 100nm size were generated by using GoodSam-UFB generator(made by S company) that generates UFBs through Cavitation technique. The generated UFB was directly applied to the strawberry cultivation process to monitor strawberry fruit productivity. In addition, the efficiency of E. coli removal in water by strong oxidizers such as OH radicals produced by UFB was evaluated. As a result, when the aqueous nutrient solution with UFBs was supplied to the strawberry medium, it had a slightly higher initial concentration compared to the nutrient solution prepared with general groundwater at a concentration of about 9mg/L and did not decrease significantly over time. In addition, it was found that the concentration of dissolved oxygen was kept high. In other words, it is easy to supply dissolved oxygen to help root growth in the early stage of strawberry growth, thereby promoting the growth of strawberries. After feeding the nutrient solution for the growth of strawberries, the nitrate concentration of the discharged nutrient solution was analyzed. As a result, dissolved oxygen contained in aqueous nutrient solution with UFBs helped the nitrate to be smoothly taken from the soil. Therefore, the concentration of nitrate in the effluent was reduced, hence strawberry growth was promoted. As a result of the E. coli removal test, aqueous solution with UFBs showed very high E. coli removal efficiency compared to the commercially available antibacterial agent. These results can be explained by the strong oxidizers included in the UFB water.

참고문헌 (Reference)

1 조용선, "황색포도상구균의 TEMPO STA와 표준 평판 배지를 이용한 정량분석법 비교" 한국식품위생안전성학회 28 (28): 252-257, 2013

2 "www.malvernpanalytical.com"

3 Zhang, W, "Regulation of anthocyanin synthesis in suspension culture of strawberry cell by pH" 19 (19): 1057-1061, 1997

4 Agarwal, A, "Principle and applications of microbubble and nanobubble technology for water treatment" 84 : 1175-1180, 2011

5 Ohgaki, K, "Physicochemical approach to nanobubble solutions" 65 : 1296-1300, 2010

6 Darnell, R. L, "Nitrate concentration effects on NO3-N uptake and reduction, growth and fruit yield in strawberry" 125 (125): 560-563, 2001

7 Parmar, R, "Microbubble generation and microbubbleaided transport process intensification-A state-of-the-art report" 64 : 79-97, 2013

8 Temesgen, T, "Micro and nanobubble technologies as a new horizon for water treatment techniques: A review" 246 : 40-51, 2017

9 Yadav, S. .K, "Intergrated nutrient management for strawberry cultivation" 64 (64): 445-449, 2010

10 Liu, S, "Identification of ROS produced by nanobubbles and their positive and negative effects on vegetable seed germination" 32 : 11295-11302, 2016

11 Ahmed, A. K. A, "Generation of nanobubbles by ceramic membrane filters: The dependence of bubble size and zeta potential on surface coating, pore size and injected gas pressure" 203 : 327-335, 2018

12 Yasuda, K, "Generation and reduction of bulk nanobubbles by ultrasonic irradiation" 195 : 455-461, 2019

13 Wszekaki, A. L, "Effects of superatomspheric oxygen on strawberry fruit quality and decay" 20 : 125-133, 2000

14 Gao, Z, "Drug-loaded nano/microbubbles for combining ultrasonography and targeted chemotherapy" 48 : 260-270, 2008

15 Jin, J, "Bulk nanobubbles fabricated by repeatedly compression of microbubbles" 2019

16 Alheshibri, M, "A history of nanobubbles" 32 : 11086-11100, 2016