Articles
Influence of the medical raw material processing with high pressure on the antioxidants exhaustion while water extraction
Authors:
Pastushkova E.V., Khabarov S.N.
Abstract:
The article concerns the influence of the medical raw materials (MRM) processing with the high pressure on the antioxidants exhaustion while water extraction. The MRM use in the food industry is a promising area of food fortifying with bioactive substances including antioxidants that are to increase respiratory disease resistance of the human body. This problem is mostly actual for the population living in areas with unfavorable environmental conditions. The main aim of the research is to scrutinize the MRM high-pressure processing (HPP) influence on the biologically active substances (BAS) output. The research objects are the medical raw materials, i.e. stinning nettle, peppermint, wild majoram, garden sage, sanguinary, amber, thymus, whortleberry leave, black currant leave and cherry leave gathered in the 2015-2016 in ecologically favorable Nizhneserginskiy and Shalinskiy areas of the Sverdlovsk region. Researchers treated the dried medical raw material with high pressure at a temperature of 200°С in the Multivac system as following: they packed the MRM sample weighing 50 g in a vacuum transparent package at the preparatory stage, placed in a loading container, brought them to the high-pressure room. Researchers generated the pressure of 100, 150 and 200 MPa by the room pump during 60 and 90 seconds. While the high-pressure processing there was an increase in the ascorbic acid amount in the whortleberry leaf essence by 63 %, and in the stinging nettle by 72%; the total flavonoids content in the dried cherry leaf raised by 37%, and in the wild majoram – by 3%, respectively, compared to the control samples. The optimal processing parameters of the medical raw materials are to be the pressure treatment of 150 MPa during 90 seconds and of 200 mPa during 60 seconds. These high-pressure processing parameters contribute to the molecules and cell junctions that influence positively the BAS extraction in the medical raw materials essence. The scientists concluded that while the pressure and time rising the antioxidative activity (AOA) and the biologically active substances of the analyzed medical raw materials boost after processing.
Keywords:
medical raw materials; antioxidants; bioactive substances; high pressure
