The fermentation of yeast reserve carbohydrates, glycogen and trehalose is a procedure to increase protein level of yeast cells and improve ethanol production. This work studied on the degradation kinetics of glycogen and trehalose carried out with two industrial strains of Saccharomyces cerevisiae (PE-2 and SA-1) and the effect of different temperatures (38o, 40o, 42o and 44oC) on degradation ...

The kinetics of protochlorophyllide phototransformation and of the subsequent blue shift were studied in homogenates prepared from etiolated wheat leaves using fluorescence spectroscopy at high pressures. The pressure dependence of the processes was studied between 0.1 and 400 MPa. The activation volumes were calculated from the pressure dependence of the kinetical curves of the processes and w...

Lipase is an enzyme that can be applied in many industrial fields so it has a good economic prospects. The demand for lipase was still unfulfilled at the time this article written. character of needs are vary depending on industry which used. Temperature and pH two factors most influence activity. This reports bacteria isolated from coconut, avocado, tempeh, areca nut their lipolytic activity 7...

moisture sorption isotherms for pistachio powder were determined by gravimetric method according to cost 90 project at temperatures of 15, 25, 35, and 40oc . maximum hysteresis level in sorption isotherms curve was observed at the range of water activity 0.2-0.7 . on the other hand hysteresis was diminished between adsorption-desorption isotherm curves when temperature reached 40oc. some mathem...

A paper-based membraneless direct hydrogen peroxide fuel cell was developed and tested under different potassium hydroxide concentrations (1 to 7 mol lt-1, stepping by 2), (1, 2, 3 lt-1) temperatures (20, 30, 40oC). Moreover, the studied for stability stopped continuous flow conditions. From experiments, it found that maximum power density of 6.79 mW cm-2 open circuit voltage 0.87 V at 40oC wer...


 Onggok is an organic waste from tapioca production rich in cellulose but has not been utilized fully for other usages. This study aimed to determine the appropriate temperature and time carboxylation process produce CMC cassava with best characteristics. used a factorial randomized block design. Factor 1 was (40oC, 55oC, 70oC) factor 2 (2 hours, 3.5 5 hours). The observed variable yield,...

germination response to temperature is different among plant seeds. germination rate and percentage is maximal at optimum temperature (s), and then reach to zero at base and ceiling temperatures. the objective of this research was (1) to evaluate germination response of snail medic seeds to temperature and (2) to determine cardinal temperatures of germination rate and percentage. therefore, see...

Koyun karbonik anhidraz-II (E.C: 4.2.1.1) enzimi koyun karaciğerinden saflaştırıldı ve bazı karakteristik özellikleri araştırıldı. Enzim 4000 EU/mg protein spesifik aktivitesi ve % 38.6 verim ile yaklaşık olarak 43,1 kat saflaştırıldı. Enzim için optimum pH, optimum sıcaklık, optimum iyonik şiddet ve stabil pH sırasıyla 7.5, 40oC, 10 mM ve 8.5 olarak belirlendi. Moleküler ağırlığı sodyum dodesi...

To evaluate the effectiveness of gibberellic acid (GA 3 ) in breaking rice seed dormancy and the use of a-amylase enzyme activity as an indicator of the dormancy level, seed from the intensively dormant irrigated cultivar Urucuia were used. The seeds were submitted to a predrying process in a forced air circulation chamber under 40oC during 7 days and submersed in 30 mL of GA 3 solution under 0...

The current study deals with the performance of constructed wetland (CW) incorporating a microbial fuel cell (MFC) for wastewater treatment and electricity generation. whole unit is referred to as CW-MFC. This technique involves two treatments; first an aerobic which occurs in upper layer system (cathode section) second anaerobic biological lower (anode section). Two types electrode material we...