Effect of Xylitol on Candida albicans resistance in serum (in vitro study)

Ria Puspitawati, Theodorus Hedwin Kadrianto, Boy M. Bachtiar, Lakshmi A. Leepel


Xylitol is reported to inhibit the growth of C. albicans. Objectives: Investigating serum factor role in inhibiting the growth of C. albicans and the effect of 1%, 5%, 10% xylitol on C. albicans resistance in serum in vitro. Methods: Identification of C. albicans (oral swab of candidiasis patient) was conducted using CHROMAgar, confirmed by germ tube test. The cultures were serially diluted, inoculated in Saburoud Dextrose Broth (SDB) contained 0% (control), 1%, 5%, or 10% xylitol, and kept for 3 or 7 days. These inoculations were then exposed to either active or inactive serum (Fetal Bovine Serum heated in 65ºC for 30 minutes) for 2 hours in 37ºC. The colony forming unit (CFU) of C. albicans in Saburoud Dextrose Agar (SDA) were counted after 2 days. C. albicans ATCC 10231 strain was used as a comparison. One-way ANOVA with 0.05 was used. Results: After 3 days cultured in media with or without xylitol, the CFU of C. albicans exposed to active serum were significantly lower than those exposed to inactive serum (p=0.032). Although not statistically significant (p=0.689), increased concentration of xylitol lead to increased resistance of C. albicans in active serum. Only 7 day exposure of 10% xylitol resulted in significantly higher growth of C. albicans (p=0.034). No significant difference of C. albicans CFU in active or inactive serum (p=0.404). Conclusion: Serum factor has role in inhibiting C. albicans growth in vitro. Exposure of 1%, 5%, or 10% xylitol for 3 or 7 days has no significant effect on C. albicans resistance in serum.

DOI: 10.14693/jdi.v16i2.98


candida albicans; resistance; serum factor; xylitol

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