In vivo study of the hypocholesterolemic effect of bread made from flour, starch, and fiber-rich flour from purple sweet potato on rats

This research was purposely to study and determine the physicochemical characteristics, sensory and hypocholesterolemic effects of purple sweet potato bread made from flour, starch, and fiber-rich flour from purple sweet potato starch processing waste on white male species Wistar rats conducted in vivo. This study used a non-factorial randomized block design model with the treatment of 100% standard feed, 25% mixture of purple sweet potato bread, and a combination of 50% purple sweet potato bread to healthy rats, and treatment of 100% standard feed and gemfibrozil, 25 % mixture of purple sweet potato bread, and a mixture of 50% purple sweet potato bread against hyper cholesterol rats. This research result shows the different hypocholesterolemic effects on the percent decrease in total cholesterol, triglycerides, LDL (Low-Density Lipoprotein), and an increase in HDL (High-Density Lipoprotein) in the 1blood serum of rats as test animals.

Express Method for Colorimetric Determination of Wheat Flour Contamination with Bac. Subtilis Spores

The causative agents of potato disease are spore-forming bacteria belonging to the subspecies Bacillus subtilis ssp. mesentericus (potato bacillus), common in nature (soil, air, plants). The causative agent of potato bread disease (Bacillus subtilis ssp. mesentericus) develops in the wheat bread crumb. The affected bread loses its natural taste and aroma first, then a peculiar sweet smell appears. The crumb becomes sticky, while breaking there are mucous, stretching threads. The crumb color changes: yellow-brown and pinkish-dirty spots. When the disease develops, the bread turns into a dark layered mass with a sharp specific smell and unpleasant taste. To prevent potato bread disease (PBD), it is necessary to control raw materials and finished products in order to detect their microbiological contamination. To determine the presence of bacteria that causes potato bread disease, a man can use different methods, which are usually divided into four groups: 1) bacteriological; 2) technological; 3) biochemical and 4) physical. In all four groups of methods, there is no single method for analyzing the PBD pathogens detection, that would be easily reproduced in any laboratory and would have the correctness of evaluating the results obtained. The workers of the Food Technology Department of the Ural State University of Economics have developed an express method for colorimetric determination of wheat flour contamination with Bac. Subtilis spores based on the erythrodextrins content in it, which give a red-brown staining when interacting with an iodine solution. The advantages of the improved method for determining PBD are: a) speed and expressiveness; b) the possibility of both qualitative and quantitative determination of Bac. Subtilis in flour in order to predict the PBD occurrence in wheat flour bread.

Effect of Steamed Potato Bread Intake on Glucose, Lipids, and Urinary Na+ and K+: A Randomized Controlled Trial with Adolescents

Although potatoes are highly nutritious, many epidemiological studies have connected their consumption with abnormal lipids, diabetes, and hypertension. Steamed potato bread has recently become one of China’s staple foods. A randomized controlled trial was designed to evaluate the effect of steamed potato bread consumption on Chinese adolescents. Four classes from a high school were randomly selected and assigned to the intervention group (two classes) or control group (two classes). The steamed wheat bread (100% raw wheat flour) and potato bread (raw wheat flour to cooked potato flour ratio of 3:7) were provided to the control group and intervention group as staple food once a school day for 8 weeks, respectively. Compared with the control group, the intervention group had significant net changes in systolic blood pressure (4.6 mmHg, p = 0.010), insulin (−4.35 mIU/L, p < 0.001), total cholesterol (−0.13 mmol/L, p = 0.032), and high-density lipoproteins cholesterol (−0.07 mmol/L, p = 0.010). The urinary level of Na+/K+ did not differ between the groups. In conclusion, the intake of steamed potato bread for 8 weeks resulted in positive effects on the total cholesterol and insulin profiles but a negative effect on the systolic blood pressure and high-density lipoproteins cholesterol of adolescents.

Development of an express method for the quantitative assessment of the contamination of wheat flour with Bac. spores. subtilis

The causative agent of potato bread disease (Bacillus subtilis, ssp. Mesentericus) develops in the crumb of wheat bread. To prevent potato disease of bread, it is necessary to control raw materials and finished products in order to identify their microbiological contamination. Various methods can be used to determine the presence of bacteria that cause potato bread disease. These methods are usually subdivided into four groups: 1) bacteriological; 2) technological; 3) biochemical and 4) physical. Within the framework of all four groups of methods, there is no single method for analyzing the detection of pathogens of potato disease in bread, which would be easily reproduced in any laboratory and would have a correct assessment of the results.At the Department of Nutrition Technology of the Ural State University of Economics, an express method for the colorimetric determination of the contamination of wheat flour with Bac spores has been developed. subtilis by the content of erythrodextrins in it, which give a reddish-brown color when interacting with iodine solution. The advantages of the improved method for determining the potato disease of bread include: speed and rapidity; the possibility of both qualitative and quantitative determination of Bac. subtilis in flour to predict the occurrence of potato bread disease in wheat flour bread.