Estimating the Trehalose Cytoplasmic Content during a Baker’s Yeast Production Process

نویسندگان

  • A. I. Cabrera
  • J. S. Aranda
  • J. I. Chairez
چکیده

Trehalose is commonly used as an indicator of a good yeast fermentation capacity and viability. An attempt of estimating trehalose concentration in yeast cells through two different mathematical approaches is presented. It combines a biomass and trehalose concentrations estimator developed with a differential neural network technique, and a structured model applied for explaining the main metabolic events that induce trehalose accumulation. Our results allow us to think that the coupling of both methods can provide suitable information aimed at reaching a high trehalose content in an actual yeast production process. Copyright © 2007 IFAC

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Neural Observer to Trehalose Estimation

These It is generally accepted in yeast production industry that intracellular trehalose is an indicator of yeast fermentation capacity and viability. The disaccharide trehalose is a cytoplasmic compound, so it must be quantified after extraction by means of an off-line analytical method during a biomass production process. Thus, knowing experimental determinations of yeast trehalose content is...

متن کامل

Effects of Wehalose on Freeze Tolerance of Baker’s Yeast

A conventional baker’s yeast strain D incorporated trehalose into its cells from a YPG medium supplemented with trehalose. Cells cultured in a medium containing 3 to 5% trehalose increased to nearly 5 times the trehalose content of cells cultured in the absence of trehalose. After 1 day of frozen storage at -2O”C, cells cultured in 3% trehalose medium experienced a lesser decrease in both viabi...

متن کامل

Hybridization and Selection of Saccharomyces cerevisiae Strains from Industrial Baker’s Yeasts

Hybridization study of two Saccharomyces cerevisiae baker’s yeast strains isolated in Thailand, IFRPD 6080 and IFRPD 6081, was carried out. Rare-mating technique has been employed with haploid and diploid mating strains of Japanese baker’s yeast. Polyploid (triploid and tetraploid) hybrids produced from rare-mating were selected and induced for sporulation. Screening of segregants obtained from...

متن کامل

Experimental Evaluation of Batch and Continuous Production of Baker’s Yeast under Computer Controlled pH

Steady state and dynamic fermentations of baker's yeast in molasses based media were analyzed in a laboratory scale bioreactor. Sugar and biomass balances together with the Monod biokinetics were used to develop the process model. Parameters of the model were obtained using collected experimental data. Model predicted open loop responses to step changes in feed concentration as well as dilu...

متن کامل

Optimization of Culture Medium for Baker’s Yeast, Ethanol, Citric Acid and Α- amylase Production from Dates Syrup

The aim of this study is to optimize the production of Baker’s yeast, Citric acid, Ethanol and α-amylase using dates of low market value as the basal fermentation medium. The results of this study showed that the optimal Baker’s yeast production was obtained with a dilution rate of 0.22 h-1. Also, the use of ammonium phosphate provides better biomass yields compared to urea. As for the Ethanol ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007