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아로니아 첨가 배지 내 느타리(Pleurotus ostreatus) 균사체 생장 및 항산화 효과
최성주,편하영,박태민,박윤진,오태석,조용구,장명준 한국버섯학회 2022 한국버섯학회지 Vol.20 No.3
This study was conducted to investigate the growth and antioxidant activity of Pleurotus ostreatus mycelia grown in medium supplemented with Aronia. The diameter and dry weight of the mycelia were increased in the medium supplemented with Aronia compared with the untreated medium. The total polyphenol content of mycelia grown in medium supplemented with Aronia and untreated medium was 6.54 mg GAE/g and 5.77 mg GAE/g, respectively. The 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of mycelia grown in medium supplemented with Aronia and untreated medium was 61.81% and 49.65%, respectively. Moreover, the 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activity of mycelia grown in medium supplemented with Aronia and untreated medium was 59.83% and 52.66%, respectively. These results confirmed that P. ostreatus mycelial growth and antioxidant activity were increased when Aronia was added to the culture medium.
최성주,모현선,김정목,김서현,이승민,최성진,김동명,박동욱,김대환 한국물리학회 2020 Current Applied Physics Vol.20 No.6
Accurate diagnose of a disease in the early stage is critical to treat the disease properly. To this end, a multitude of biosensors with advanced technologies have been developed to detect the number of biomolecules precisely. In this work, we propose a method for extracting the Stern layer capacitance (Cstern) using the experimental data of silicon nanowire ion-sensitive field-effect transistors (ISFETs) to help improve the accurate detection of target molecules. The proposed method was applied to both pH and virus sensing scheme, and the Cstern value of pH and a virus were extracted as 32 and 26 μF/cm2, respectively. These findings indicated that the extracted Cstern was affected by the size of the ion and protein, which also was verified by a computer-aided simulation. These insights would be useful in the development of charge-based ISFET biosensors.