To enhance the protease production and decrease cost, corn flour and soy peptone were screened as cheap raw materials for the production of extracellular proteases by Bacillus strains. Their compositions in the medium suitable for enzyme production of Bacillus sp. B001 were optimized using statistical experiment designs. Under the optimized conditions, the protease production of Bacillus sp. B0...

A new approach was applied with the aim at producing plant protein hydrolysates less heterogeneous and less contaminated with nonpeptide substances than are the presently available digests. A significant reduction of nonprotein contaminants was achieved by extraction of the plant material, soy flour or wheat flour, with acetone prior to isolation of the protein. Enzymes of nonanimal origin, pap...

Saccharomyces cerevisiae S1, which is a locally isolated and improved strain showed viability at 40, 45 and 50°C and produced ethanol at 40, 43 and 45°C. When the cells were given heat shock at 45°C for 30min and grown at 40°C, 100% viability was observed for 60h, and addition of 200gL(-1) ethanol has led to complete cell death at 30h. Heat shock given at 45°C (for 30min) has improved the toler...

Chiffon cakes prepared with a mixture of wheat flour / konjac flour / soy protein isolate (SPI) (89.5 : 0.5 : 10 ) together with replacement of 50-70% soybean oil with water were investigated for their physicochemical and sensory properties. Moisture and protein content in reduced-fat chiffon cakes were significantly higher (p < 0.05) than the control chiffon cake. Specific volume decreased (p ...

Dry heat was used to inactivate Salmonella newington, Salmonella typhimurium, Salmonella anatum, Salmonella kentucky, Salmonella cubana, Salmonella seftenberg, Salmonella thompson, and Salmonella tennessee in corn flour at 10 and 15% moisture. The flour was spray inoculated at 10(5) Salmonella cells per g and then stored at 49 degrees C (120 degrees F); viable Salmonella cells were counted on T...

The effects of soaking and roasting on the physicochemical and pasting properties of soybean flour were evaluated. Soybean seeds were soaked overnight in tap water for 0-72 h, hand dehulled, dried, and part of the sample was roasted. Roasted and unroasted soy beans were milled into flour and analyzed. The results showed that the total carbohydrates (22.8-27.9 g/100 g), the ash content (3.5-3.6 ...

Investigations undertaken to elucidate the mechanism whereby concentrates of the soy bean trypsin inhibitor depress growth have indicated that an inhibition of intestinal proteolysis is not the only factor involved (l-3). In a previous paper (4), it was shown that a concentrate of the soy bean trypsin inhibitor, which had been treated so as to destroy its antitryptic activity, still retained th...

The article presents the results of scientific researches on possibilities improving quality various food products made from flour. possibility product by using method combining different types flour as main raw material is considered. In addition, scientists suggest use non-traditional natural ingredients, in particular vegetable origin. countries who are looking for ways to improve flour-base...