Gumustop, IsmailOrtakci, Fatih2025-09-252025-09-2520222757-52332687-3761https://doi.org/10.38042/biotechstudies.1103767https://search.trdizin.gov.tr/en/yayin/detay/1135194/evaluating-the-microbial-growth-kinetics-and-artificial-gastric-digestion-survival-of-a-novel-pichia-kudriavzevii-fol-04https://hdl.handle.net/20.500.12573/3794https://search.trdizin.gov.tr/en/yayin/detay/1135194Present study aims to explore Pichia kudriavzevii FOL-04 (FOL-04)’s: i) survival against artificial gastric juice (AGJ) and artificial bile juice (ABJ), ii) growth kinetics in shake flask (SF) and fed-batch trials (FBT). Survival of FOL-04 as measured by relative cell density (RCD) against AGJ and ABJ was screened at four different pH-levels (control, 3, 2, 1.5) and ox-bile concentrations (control, 0.2%, 1%, 2%), respectively. Growth kinetics was calculated by periodic measurement of OD<inf>600</inf> in SF (225 rpm, 30°C) or in FBT using exponential feeding regimen where pH, dissolved-oxygen and temperature were controlled at 5.5, 21%, and 30°C, respectively. The doubling-time, maximum specific growth rate, and final cell densities achieved for SF and FBT were 81.7min, 1.67, 11.79 and 170.4 min, 4.75, 37.95, respectively. RCDs calculated were similar for pH=3 and control vs both were significantly higher(p<0.05) than pH=1.5 and 2 with the latter two pH-levels were not significantly different(p>0.05). RCDs were similar across control, 0.2%, and 1% ox-bile levels(p>0.05). However, 2% ox-bile yielded significantly lower RCD (p<0.05) compared to all except 1%. FOL-04 is a potential probiotic candidate showing robustness against AGJ and ABJ and remarkable biomass increase was achieved when grown under FBT which could pave the way for developing a yeast-based probiotic using this strain. © 2023 Elsevier B.V., All rights reserved.eninfo:eu-repo/semantics/openAccessAcid BileBioreactorGrowth KineticsPichia Kudriavzevii Fol-04ProbioticBiyoteknoloji Ve Uygulamalı MikrobiyolojiBilgisayar Bilimleri, Yazılım MühendisliğiArticle10.38042/biotechstudies.11037672-s2.0-85167436719