نتایج جستجو برای: Thermal inactivation

تعداد نتایج: 264061  

Journal: :journal of paramedical sciences 0
bi bi fatemeh nobakht motlagh ghochani proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran seyedeh zahra moosavi-nejad department of biology, faculty of basic sciences, alzahra university, tehran seyed ashkan ordibehesht tehran sport medicine board, tehran

lysozyme is considered as part of the innate immune system. it has stimulated considerable interest as a natural food preservative. lysozyme has been shown to be effective in preserving a variety of foods such as fresh fruits and vegetables, meats, seafood and wine, for which many japanese patents have been granted. the relatively high thermal stability of lysozyme also makes it attractive for ...

Journal: :international journal of advanced biological and biomedical research 2013
shahryar saeidian

polyphenol oxidase (ppo) from tomatoes was extracted and partially purified through  (nh4)2so4 precipitation, dialysis and ion exchange chromatography. the activity of polyphenol oxidase was investigated in solanum lycopersicum. spectrophotometric method was used to assay the enzyme activity and the kinetic constants - maximum enzyme velocity (vmax) and michealis - menten constant (km). of the ...

Journal: :journal of food quality and hazards control 0
m. zarei department of food hygiene, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran a. shahriari department of biochemistry, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran f. tarazoudar department of food hygiene, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran m. paknejad veterinary office, andimeshk, khuzestan province, iran

background: lactoperoxidase (lpo) is one of the most heat-stable enzymes in milk and its inactivation has been proposed for monitoring thermal processes. the aim of this study was to provide information on activity and thermal inactivation behavior of lpo in iranian cow and buffalo milk and whey. methods: sixty cow and buffalo milk samples were collected. the lpo activity was measured using spe...

Journal: :journal of food quality and hazards control 0
m. zarei department of food hygiene, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran a. shahriari department of biochemistry, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran f. tarazoudar department of food hygiene, faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, iran m. paknejad veterinary office, andimeshk, khuzestan province, iran

background: lactoperoxidase (lpo) is one of the most heat-stable enzymes in milk and its inactivation has been proposed for monitoring thermal processes. the aim of this study was to provide information on activity and thermal inactivation behavior of lpo in iranian cow and buffalo milk and whey. methods: sixty cow and buffalo milk samples were collected. the lpo activity was measured using spe...

A. Shahriari , F. Tarazoudar , M. Paknejad, M. Zarei,

Background: Lactoperoxidase (LPO) is one of the most heat-stable enzymes in milk and its inactivation has been proposed for monitoring thermal processes. The aim of this study was to provide information on activity and thermal inactivation behavior of LPO in Iranian cow and buffalo milk and whey. Methods: Sixty cow and buffalo milk samples were collected. The LPO activity was measured using ...

Journal: :journal of paramedical sciences 0
roya afshari research committee student. national nutrition &food technology research institute, faculty of nutrition sciences &food technology shahid beheshti university of medical sciences. tehran hedayat hosseini department of food science and technology national nutrition &food technology research institute, faculty of nutrition sciences &food technology shahid beheshti university of medical sciences. tehran

atmospheric pressure plasma (app) is an emerging non thermal technology for the improvement of food  safety. non-thermal plasma (ntp) is a neutral ionized gas that comprises highly reactive spices including, positive ions, negative ions, free radicals, electrons, excited or non excited molecules and photons at or near room temperature. ntp can be generated at atmospheric pressure that makes it ...

Journal: :journal of biomedical physics and engineering 0
h. ghomi laser and plasma research institute, shahid beheshti university, tehran, iran s. mohades laser and plasma research institute, shahid beheshti university, tehran, iran n. navab safa laser and plasma research institute, shahid beheshti university, tehran, iran h. dabiri school of medicine, shahid beheshti university of medical sciences, tehran, iran

background: dielectric barrier discharge (dbd), a source of non-thermal plasma, is used in surface decontamination. objective: to study the effect of dbd plasma treatment, we evaluated the effect of plasma exposure time on inactivation of bacillus subtilis. results: applying the dbd plasma to the culture of b. subtilis caused complete sterilization of the surface without any thermal effects. in...

Journal: :journal of paramedical sciences 0
shiva kalantari clinical proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran; skin research center, shahid beheshti university of medical sciences, tehran seyedeh zahra moosavi-nejad department of biology, faculty of basic science, alzahra university, tehran mostafa rezaei-tavirani clinical proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran;asre novin institute of research and industrial services, tehran seyed hassan moghaddamnia clinical proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran ashraf shaabani department of biology, faculty of basic science, alzahra university, tehran mehrnaz mostafavi clinical proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran

adenosine deaminase is an aminohydrolase (ec 3.5.4.4) which participates in the purine metabolism where it degrades either adenosine or 2'-deoxyadenosine producing inosine or 2'-deoxyinosine, respectively. the enzyme contains a parallel alpha/beta -barrel motif with eight central beta strands and eight peripheral alpha helices. ada is located both in the cytosol and on the cell membrane. since ...

Journal: :Biotechnology and bioengineering 2017
Abhijit N Shirke An Su J Andrew Jones Glenn L Butterfoss Mattheos A G Koffas Jin Ryoun Kim Richard A Gross

Cutinase thermostability is important so that the enzymes can function above the glass transition of what are often rigid polymer substrates. A detailed thermal inactivation analysis was performed for two well-characterized cutinases, Aspergillus oryzae Cutinase (AoC) and Thiellavia terrestris Cutinase (TtC). Both AoC and TtC are prone to thermal aggregation upon unfolding at high temperature, ...

Journal: :Journal of biochemistry and molecular biology 2003
S Zahra Moosavi-Nejad Ali-Akbar Moosavi-Movahedi Mostafa Rezaei-Tavirani Giovanni Floris Rosaria Medda

The kinetics of thermal inactivation of copper-containing amine oxidase from lentil seedlings were studied in a 100 mM potassium phosphate buffer, pH 7, using putrescine as the substrate. The temperature range was between 47-60 degrees C. The thermal inactivation curves were not linear at 52 and 57 degrees C; three linear phases were shown. The first phase gave some information about the number...

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