نتایج جستجو برای: kinetics of fermentation

تعداد نتایج: 21171866  

Amir Mohammad Mortazavian, Aziz Homayouni Rad Mohammad Rahmati Roudsari Sara Sohrabvandi

The combined effects of inoculation level (4 or 8-fold compared to standard inoculation) and sequence (standard inoculation before fermentation and 3-fold inoculation at the end of fermentation=1+3, Two-fold inoculation before fermentation and the same at the end of fermentation=2+2, 2+6, 4-fold before fermentation=4, 4+4, and 8) of culture inoculum containing probiotics on biochemical and micr...

Journal: :Food Chemistry 2021

Health benefits of whole wheat products are partially attributed by their unique phenolic compounds. This study investigated effect simulated gastrointestinal digestion and probiotic fermentation on releasing acids from foods (bread, cookie, pasta). Kinetics results showed that more were released within the first hour gastric intestinal digestions compared to prolonged digestion. Lactobacillus ...

Ebrahim Vasheghani Farahani Gholam Khayati Hassan Pahlavanzadeh Nasser Ghaemi

Recovery of metabolites from fermentation broth by solvent extraction can be used to optimize fermentation processes. End-product reutilization, low product concentration and large volumes of fermentation broth and the requirements for large bioreactors, in addition to the high cost largely contributed to the decline in fermentative 2,3-butanediol production. Extraction can successfully be ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
soheila shokrollahzadeh farzaneh vahabzadeh babak bonakdarpour mehri sanati bengt l persson

two different growth media, namely complex and defined media, were used to examine establishment of steady-state conditions in phosphate-limited culture system of saccharomyces cerevisiae cen.pk113-5d strain. using the defined growth medium, it was possible to obtain steady state condition in the continuous culture. the effect of phosphate concentration on the growth of s. cerevisiae in phospha...

2009
Petia Koprinkova-Hristova Silviya Popova Mihail Angelov Georgi Kostov

Abstract: The present paper presents a hybrid model of yogurt starter mixed culture fermentation. The main nonlinearities within a classical structure of continuous process model are replaced by neural networks. The new hybrid model accounts for the dependence of the two microorganisms’ kinetics from the on-line measured characteristics of the culture medium – pH. Then the model was used furthe...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
hassan pahlavanzadeh gholam khayati ebrahim vasheghani farahani nasser ghaemi

recovery of metabolites from fermentation broth by solvent extraction can be used to optimize fermentation processes. end-product reutilization, low product concentration and large volumes of fermentation broth and the requirements for large bioreactors, in addition to the high cost largely contributed to the decline in fermentative 2,3-butanediol production. extraction can successfully be used...

2016
Ivan Petelkov Rositsa Denkova Bogdan Goranov Vesela Shopska Georgi Kostov Zapryana Denkova Nadya Ninova-Nikolova Zoltan Urshev Svetlana Minkova

The aim of the present work was to evaluate the influence of the lack of urease activity in some Streptococcus thermophilus strains on the primary metabolism during lactic acid fermentation. A comparison of the kinetics of the lactic acid process with the participation of ureautilizing and urease deficient streptococcal strains was performed. It was found that the lack of urease activity in the...

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