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SUMMARY:Bio-inspired Delivery Systems for Flavors and Fragrances
DTSTART:20180416T131500
DTEND:20180416T141500
DTSTAMP:20261005T064914Z
UID:94220074ae9c97d696cb6c1ac9c6df5a417bfdec946ac13d637fbb32
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Daniel Benczédi\, Corporate R&D\, Firmenich SA\nMost of th
 e consumer goods that we use every day contain flavors to make them taste 
 good or fragrances to make them smell clean and fresh. Flavors and fragran
 ces are typically composed of dozens of organic molecules characterized by
  high volatility and in most cases\, by limited water solubility. There is
  thus a need to make fragrances last longer\, more particularly in home an
 d body care applications involving their dilution or rinsing-off with wate
 r. Similarly\, there is a need to protect flavors exposed to moisture\, te
 mperature or pH variations to extend their shelf-life in foods and beverag
 es.\n A thorough understanding of the molecular fate of flavors and fragr
 ances is thus a prerequisite to their hedonic performance when used. Furth
 ermore\, a broad range of formulation methodologies are available to solub
 ilize or encapsulate flavors and fragrances and to enhance their performan
 ce in consumer goods of variable chemical composition or physical format. 
 The challenge for formulation engineers is to develop delivery systems tha
 t are safe\, affordable and sustainable. We show how design principles ins
 pired by biological structures are leveraged to develop differentiating de
 livery systems.\n We first review how flavor and fragrance molecules are 
 able to partition between water and oil and how their interfacial molecula
 r packing is able to influence the phase behavior of consumer goods. We th
 en show how this can be used to optimize the levels of surfactants needed 
 to solubilize fragrances or to engineer multi-scale hierarchical structure
 s with well-defined functionalities. We also illustrate how organic and in
 organic building blocks can be combined to adjust the mechanical and mass 
 transport properties of the resulting barrier materials. We finally highli
 ght how the surface properties of these controlled-release systems can be 
 modified to enhance their affinity towards inorganic substrates or biologi
 cal ones like hair or skin.            \n \nV. Tchakalova et a
 l.\, (2014)\, Evaporation triggered self-assembly in aqueous fragrance–e
 thanol mixtures and its impact on fragrance performance\, Colloids and Sur
 faces A: Physicochemical & Engineering Aspects\, 460\, 414-421.\n \nB. Du
 ncan et al.\, (2015)\, Hybrid organic-inorganic colloid composite sponges 
 via internal cross-linking\, Small 11(11)\, 1302-1309.\n \nK. A. Günay e
 t al. (2017)\, Peptide enhanced selective surface deposition of polymer-ba
 sed fragrance delivery systems\, Advanced Functional Materials\, 27(2)\, 1
 603847.\nBio: Daniel Benczédi obtained an engineering degree in Food Scie
 nce and Technology in 1991 followed by a PhD in Materials Science in 1995 
 at the ETH in Zurich in the field of polymer physics and biopolymer proces
 sing. He has since spent his entire career in the flavor and fragrance ind
 ustry working in Research & Development. The main topics of his research a
 re soft matter physics and colloid chemistry for the engineering of delive
 ry systems. He has an executive MBA obtained at the IMD in Lausanne in 200
 2. Since 2008\, he is Vice President Materials Science at Firmenich SA in 
 Geneva. Today\, he is in charge of an international team located in three 
 countries (Switzerland\, United State\, China).\n\n 
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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