Aktivitas Antibakteri Nanokomposit TiO2/Cu dan TiO2/CuO terhadap Bakteri Bacillus cereus
نویسندگان
چکیده
Perkembangan nanoteknologi sebagai nanomaterial telah banyak dimanfaatkan salah satunya dalam bentuk nanokomposit. Nanokomposit diaplikasikan fotokatalis untuk mendegradasi logam berat dan dewasa ini penelitian mengenai manfaat nanokomposit bahan antibakteri. Penelitian bertujuan menganalisis aktivitas antibakteri dari TiO2/Cu TiO2/CuO hasil sintesis terhadap Bacillus cereus. Metode yang digunakan melakukan adalah metode impregnasi basah. CuSO4 merupakan prekursor mensinteis sedangkan menggunakan CuCl2. Suhu kalsinasi 6000C. Material dihasilkan berukuran 29.01 nm 27.64 nm. Uji karaterisasi X-Ray Diffraction (XRD) dilakukan mengetahui pembentukkan TiO2/CuO. Puncak difraksi pada sudut 2θ TiO2 yaitu 25.33o, CuO 38.70, Cu 43.60 menandakkan berhasil terbentuk. Hasil pengujian cereus dengan difusi cakram menunjukkan memiliki zona hambat bakteri 8.10 mm 11.40 termasuk ke kuat nanopartikel sedang nilai sebesar 7.85 mm. daya lebih tinggi dibandingkan nanopartikelnya.
منابع مشابه
Effect of laser photocoagulation and bevacizumab intravitreal in proliferative diabetic retinopathy: review on biomarkers of oxidative stress
Latar belakang: Penelitian ini bertujuan membandingkan pengaruh fotokoagulasi laser dan bevacizumab intravitreal (BIV) terhadap penanda biologis stres oksidatif, antara lain aktivitas aldehid dehidrogenase (ALDH) plasma, kadar malondialdehid (MDA), aktivitas superoxide dismutase (SOD) dan kadar vitreal vascular endothelial growth factor (VEGF) pada penyandang retinopati diabetik (RD) proliferatif.
متن کاملBacillus cereus infections.
Bacillus cereus infections The importance of Bacillus organisms, particularly B. cereus, in local infections has been largely overlooked because they are commonly encountered as contaminants in specimens or cultures. Turnbull et al. (J Clin Pathol 1979 ;32 :289-93) reported severe infections with B. cereus and prompted me to review the recent isolates in this laboratory. In the nine months, Nov...
متن کاملBacillus cereus endophthalmitis.
Endophthalmitis, of any aetiology, is a potentially devastating ocular infection. Few patients are able to maintain good visual acuity. Many retain only navigational vision and a significant number require evisceration or enucleation. 2 The incidence ofendophthalmitis after trauma has been estimated to occur in 2-7% of cases.3 Various organisms have been implicated but, in recent years, Bacillu...
متن کاملBacillus cereus spores
In some Bacillus species, manganese levels influence the resistance properties of spores. To determine if this was true for Bacillus cereus, bacteria were sporulated with different MnCl2 concentrations resulting in spores with 30-fold differences in core Mn 2+ levels. Spores with different Mn 2+ levels displayed no differences in resistance to dry heat, UV radiation, γ-radiation, or hydrogen pe...
متن کاملModelling Bacillus cereus growth.
The aim of this study was to model the growth, in a model system, of toxigenic strains of Bacillus cereus as a function of temperature, pH and water activity. Optical density (OD) values were transformed into numbers of colony-forming units (CFU) by the use of a 'calibrating' relation. The growth curves were then fitted to the Gompertz function which allowed the estimation of the lag-time (lamb...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Jurnal Sains Dasar
سال: 2023
ISSN: ['2085-9872', '2443-1273']
DOI: https://doi.org/10.21831/jsd.v11i2.53247