| Autor: |
Nahla A, El-Wakil, Enas A, Hassan, Mohammad L, Hassan, Soheir S, Abd El-Salam |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Environmental science and pollution research international. 26(26) |
| ISSN: |
1614-7499 |
| Popis: |
The present study describes the impregnation of coffee extract (CE) into bacterial cellulose synthesized from kombucha tea fungus (KBC) of different cellulose content, incubated for different incubation periods (2, 4, and 10 days), to prepare biocomposites having the potential for wound healing applications. Total polyphenols in hydroalcoholic extracts from ground roasted coffee and its release from the prepared biocomposites were determined as gallic acid equivalent. The polyphenols content was found to be 13.66 mg/g and the minimum inhibitory concentration (MIC) of the CE was determined using colony-forming unit (CFU) method against Gram-negative bacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus where the growth inhibition was 86 and 97% respectively. Biocomposites (KBC/CE) with the lowest cellulose and CE content showed the highest wet tensile stress (3.35 MPa), absorption of pseudo extracellular fluid (154.32% ± 4.84), and water vapor transmission rate (3184.94 ± 198.07 g/m |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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