BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//6.6.4.4//EN
TZID:Asia/Jerusalem
X-WR-TIMEZONE:Asia/Jerusalem
BEGIN:VEVENT
UID:1150@biotech.technion.ac.il
DTSTART;TZID=Asia/Jerusalem:20260223T140000
DTEND;TZID=Asia/Jerusalem:20260223T143000
DTSTAMP:20260211T101332Z
URL:https://biotech.technion.ac.il/events/%d7%a1%d7%9e%d7%99%d7%a0%d7%a8-%
 d7%a1%d7%99%d7%95%d7%9d-%d7%9e%d7%92%d7%99%d7%a1%d7%98%d7%a8-%d7%99%d7%95%
 d7%a0%d7%aa%d7%9f-%d7%92%d7%95%d7%9c%d7%93%d7%9e%d7%9f/
SUMMARY:סמינר סיום מגיסטר: יונתן גולדמן\, מהמ
 עבדה של פרופ'ח מאיה דוידוביץ-פנחס
DESCRIPTION:The use of jojoba oil to formulate oleogels systems using vario
 us natural waxes as structuring agents\n ** Lecture will be given in Engl
 ish**\nAbstract:\nOleogels consist of liquid oil structured by an oleogela
 tor\, and their gelling behavior depends on the compatibility between the 
 oleogelator’s chemical structure and the physicochemical properties of t
 he oil phase. This study utilized jojoba oil (JO)\, a liquid wax with a un
 ique unsaturated wax-ester profile that differs from typical triacylglycer
 ol-based edible oils as well as from natural waxes that are solid at room 
 temperature. Three natural saturated waxes with differing wax-ester compos
 itions were used as oleogelators\; beeswax (BEW)\, candelilla wax (CLX)\, 
 and carnauba wax (CRX). The effects of wax type and concentration on gel f
 ormation were examined through thermal\, rheological\, structural\, and te
 xtural analyses.\nThe findings show significant differences in gelation ab
 ility\, oil-binding capacity\, crystal morphology\, and hardness among the
  different wax oleogelators. Minimal gelation concentration of the differe
 nt waxes in JO followed the trend of CLX&lt\;BEW&lt\;CRX. BEW samples exhi
 bited needle-like crystals and a small difference between storage and loss
  moduli\, indicating a weak gel. CLX formed a very fine crystal structure\
 , which correlated with its high oil-binding capacity and relatively high 
 hardness values at all concentrations. CRX samples favored crystal growth 
 over nucleation and displayed a wide range of dendritic crystal sizes\, re
 sulting in poor oil-binding capacity and a brittle gel. Moreover\, CRX con
 centration did not affect CRX samples’ melting temperature\, indicating 
 a low interaction with JO. As expected\, increasing wax concentration stre
 ngthened the mechanical properties in all formulations. These results sugg
 est that JO is compatible with candelilla wax and beeswax\, forming a gel 
 with high stability and moderate mechanical resistance\, whereas carnauba 
 wax shows low compatibility with JO and consequently forms poorer gels.
CATEGORIES:סמינרים
END:VEVENT
BEGIN:VTIMEZONE
TZID:Asia/Jerusalem
X-LIC-LOCATION:Asia/Jerusalem
BEGIN:STANDARD
DTSTART:20251026T010000
TZOFFSETFROM:+0300
TZOFFSETTO:+0200
TZNAME:IST
END:STANDARD
END:VTIMEZONE
END:VCALENDAR