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UID:1052@biotech.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20171122T160000
DTEND;TZID=Asia/Jerusalem:20220202T155700
DTSTAMP:20220512T124724Z
URL:https://biotech.technion.ac.il/events/the-effect-of-catechin-structure
 -on-the-stability-and-antioxidant-activity-as-a-function-of-pressure-and-p
 h-in-purified-and-multi-component-models-%d7%aa%d7%a7%d7%a6%d7%99%d7%a8/
SUMMARY:The Effect of Catechin Structure on the Stability and Antioxidant A
 ctivity as a Function of Pressure and pH in Purified and Multi-Component M
 odels תקציר
DESCRIPTION:High-pressure processing (HPP)\, is an innovative food preserva
 tion technology that has been developed to meet consumers’ demand for sa
 fe\, healthy\, and minimally processed food. In food systems\, the effect 
 of pressure on reaction kinetics can be critical in conditions combining t
 hermal and high-pressure\, and in the concept of “Hyperbaric Storage” 
 (HS)\, a concept that aims not to replace the processing step as in HPP bu
 t the cold storage by the application of pressure at milder conditions. At
  this method\, the product is exposed to high pressure for prolonged perio
 d time. Yet\, the effects of pressure on kinetics are often unknown. Green
  tea catechins (GTCs) are a group of polyphenols related with flavor\, app
 earance\, and known for their health-promoting functionality in plant-base
 d food. Several mechanisms may lead to the degradation of GTCs during proc
 essing and storage\, making their preservation during storage of significa
 nt industrial importance. This study investigates the effect of HS on GTCs
  degradation kinetics adopting advanced systems (e.g. high hydrostatic pre
 ssure system (HHP)\, in-situ HHP with UV-Vis spectroscopy\, and LC-MS anal
 ysis). The results provide fundamental information regarding the impact of
  pressure on degradation kinetics as a function of catechin structure\, pH
  levels\, in single and multi-component model systems (such as green tea e
 xtract) and relate the degradation to changes in the antioxidant capacity 
 of catechins solutions.\n\n&nbsp\;\n\nAbstract
CATEGORIES:סמינרים
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