Development of Dairy Products TECHNOLOGY with Application Low-etherificated Pectin Products

The issue relatedto removing heavy and radioactive metals from the body is relevant all over the world. Chemical preparations for removing heavy metals and radionuclides are not effective enough, causing the depletion of trace elements in the body. It is effective to use substances contained in natural foods that do not cause side effects and provide for protective action. These substances include pectin, safe natural detoxifying agents that remove toxins from the body. When processing fruits and vegetables, pectin remains in the pomace thatis valuable for obtaining competitive products. There are techniques to produce pectin from plant raw materials by using enzymes that are harmless to health. The use of pectin concentrates in combination with dairy raw materials makes it possible to obtain biologically complete products with functional properties. A concentrate containing 5 %of pectin was used in the study reported in this paper. Raw materials were studied in terms of important indicators of their quality and safety, to determine their suitability and further use in yogurt technology. The formulations of yogurts have been devisedinvolving the application of low-esterified beet pectin concentrate, whose degree of etherification is 34.7 % and the complex-forming capacity is 290 mg Рb2+/g. It has been established that the most optimal sample contains pectin in the amount of 0.5 % per milk mass. To preserve the vitamin composition, the yogurts were prepared under the classic pasteurization regime of 72 to 75 °C with a 20 s aging. In the future, the industrial implementation of the devised technologies and formulations of pectin-containing dairy products could provide the population with products that have functional properties and contribute to the prevention of socially significant disease

Lead and cadmium biosorption from milk by Lactobacillus acidophilus

The food and water contamination with heavy metals is increasing due to the environmental pollutions. Lead and cadmium are the toxic heavy metals for humans that can be found in air, soil, water, and even food. Lactic acid bacteria have the ability to remove and diminish the level of heavy metals. In this study, Lactobacillus acidophilus was used to remove lead and cadmium in milk and the capability of this valuable bacterium in biosorption of these metals low concentrations (µg/L or ppb) in milk was evaluated. First, the variables on lead and cadmium removal by this bacterium have been studied by Plackett–Burman design. Then, the bioremoval process was optimized and the three main factors, the bacterium concentration, contact time, and the initial heavy metal concentration were chosen by using a central composite design. The optimum lead and cadmium bioremoval yield of 80% and 75% were observed, respectively, at 1 × 1012 CFU of L. acidophilus in milk at the 4th day and the initial ion concentration of 100 µg/L. The 3D plots analysis showed the interaction effects on metal biosorption. This study showed that L. acidophilus is a natural effective biosorbent for lead and cadmium removal from milk