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Impact of Preservatives in Cellulose Nanofibrils against Cellulase-releasing Microorganisms on the Rheology

논문 기본 정보

저자정보
(Chungbuk National University) (NatureCostech) (National Institute of Forest Science) (Chungbuk National University)
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제52권 제5호(통권 제196호)
발행연도
수록면
66 - 78 (13page)
DOI
10.7584/JKTAPPI.2020.10.52.5.66
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Impact of Preservatives in Cellulose Nanofibrils against Cellulase-releasing Microorganisms on the Rheology
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    초록·키워드

    Microbial contamination in the cosmetic industry has attracted attention because it risked human health. We examined the effect of preservatives such as 1,2-hexanediol (H), 1,2-octanediol (O), 4-hydroxy acetophenone (A), and their combinations in preventing microbial contamination and reducing the viscosity drop of CNF suspensions. Antimicrobial activity was evaluated by colony count method for B. subtilis , S. xylosus, C. albicans, and the percentage of contaminated area for A . niger . CNF viscosity was measured using a rheometer. The viscosity of CNF was drastically diminished by decreasing the concentration of preservatives used in the suspension. 1,2-hexanediol was the most effective in inhibiting the growth of B . subtilis and S . xylosus at the lowest concentration (0.25%). 4-hydroxy acetophenone was able to reduce CNF degradation by B. subtilis and S. xylosus, more effective than other preservatives. 1,2-octanediol was the most powerful in preventing the growth of C . albicans and A . niger . It was also able to reduce the degradation by C . albicans to 18.96%, followed by O+A and H+O at the concentration of 2%. In the case of A. niger, H+O and H+A presented the interesting results to decrease CNF degradation of 38.32% and 39.21%, respectively.

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      UCI(KEPA) : I410-ECN-0101-2020-586-001591534