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반암(맥반석)으로 제조한 다공성 펠렛의 Ag 담지 및 항균 메디아로서의 적용
한요셉,김현중,신영섭,박재구,고재철,Han, Yo-Sep,Kim, Hyun-Jung,Shin, Young-Seop,Park, Jai-Koo,Ko, Jae-Churl 한국세라믹학회 2009 한국세라믹학회지 Vol.46 No.1
The porous pellets were prepared from porphyry by slurry foaming method. The effect of sintering temperatures on pore structure of porous porphyry pellets with different extension ratio ($E_R$) was investigated by specific surface area, water absorption and porosity, which changed with sintering temperatures. When the sintering temperatures increased from $975^{\circ}C$ to $1075^{\circ}C$, specific surface area and water absorption of the all samples decreased. In case of the sample with an equal sintering temperature, $E_R=3.0$ pellets had little influence on pore structure compared to the $E_R=2.0$ pellets. As a results, it was shown by SEM that facilitated formation of micro pores at $E_R=2.0$ pellets shrunk increasingly after sintering process. At $E_R=3.0$ and sintering temperature at $1025^{\circ}C$, optimum conditions of the porous porphyry porous pellets was found. Also, Escherichia coli removal efficiency of the silver-containing porphoyry porous pellets was measured for the feasibility as a antibacterial media. The antibacterial activity of prepared silver-containing sample was maintained above 90% for 40 days.
곡물배지가 느타리버섯의 균사배양과 생리활성에 미치는 영향
류현순,손미예,조용운,갈상완,이상원 한국버섯학회 2004 한국버섯학회지 Vol.2 No.1
Effect of solid grain media on the mycelial growth of Pleurotus ostreatus and its biofunctional activities were investigated using seven kinds of grains. Foxtail millet and barley were good for growth of hypha of P. ostreatus. However, growth of the mycelium was very slow in the solid grain media containing wheat, corn and brown rice. Mycelial growth of P. ostreatus according to water content of solid grain media was good at 25% to 30%. Mycelial growth of P. ostreatus according to heating-time and temperature of solid grain media was good for 30 min at 121℃. Anticancer activities against lung cancer cell line of the myceial extracts from P. ostreatus grown on several grain media were strong in the corn, defatted soybean, brown rice, barly and black bean in order. Fibrinolytic activities of the myelial extracts were strong in order defatted soybean, wheat, foxtail millet, barley, brown rice and black bean. The mycelial extracts were showed good antibacterial activities against Pseudomonas aeroginosa and Staphylococcus aureus.
Niveditha Damodharan,Roshan Kumar Verma,Archana Angrup,Naresh K Panda,Naresh K Panda 대한이비인후과학회 2020 대한이비인후과학회지 두경부외과학 Vol.63 No.5
Background and Objectives This study investigates the role of manuka honey in the healingof postoperative mastoid cavity. Subjects and Method This was a single centre prospective study on 40 consecutive patientsof chronic otitis media undergoing canal wall down mastoidectomy. Manuka honey soaked ingel foam was kept in the mastoid cavity for the study group and antibiotic soaked gel foam waskept for the control group. Culture swabs from mastoid granulations were sent at various timesfrom both groups. The healing of the mastoid cavity was assessed in the follow up period. Results Preoperatively 15 out of 20 patients (75%) had a positive aural swab culture in thestudy group while 11 out of 20 (55%) in the control group had a positive aural swab culture. Themost common organism isolated was Pseudomonas aeruginosa and Proteus mirabilis. Onemonth after mastoidectomy only 4 patients (20%) had sterile culture and 16 patients (80%) hadgrown organisms; in the control group, 7 patients (35%) had sterile culture and 13 patients (65%)had growth on culture. The mean merchant scores for the study group and the control were 2.61(2-5) and 2.05 (1-4), respectively. At 3 months 13 patients (65%) with sterile culture and 7 patients(35%) had growth on culture; in the control group, 16 patients (80%) had sterile cultureand 4 had shown persistent growth on culture (p=0.28). All positive cultures were aerobic inboth groups. The mean merchant scores for the study group and the control were 1.03 (0-4)and 0.7 (0-3), respectively (p=0.09). Conclusion Healing of mastoid cavity was almost similar in both groups (p>0.05). Manukahoney exhibited antibacterial activity against Pseudomonas, Proteus, Klebsiella, Escherichiacoli, Staphylococcus