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New in Synthetic (page 9 of 10)
Sep 24, 2007 | 11:19 AM CDT
New Developments in Physiological Cooling Agents
By: Mark Erman
Examining the rapid development in the chemistry and uses of cooling agents. Physiological cooling agents are ubiquitous ingredients in many consumer products, such as chewing gums, toothpastes, mouthwashes, lotions and shampoos. Based on numerous new patents and publications, research and development in the field continues at a fast pace.
May 21, 2007 | 03:34 PM CDT
F&F chemistry: Conversion of Some Unsaturated Cyclic Ethers to Lactones Catalyzed by Lipase B from Candida antarctica
By: Ian Gatfield, Jens-Michael Hilmer and Heinz-Jü…
Is peracetic acid suitable for the reported conversion of menthofuran to menthofurolactone, and how does this reaction behave with other unsaturated, cyclic ethers as substrate?
May 21, 2007 | 03:20 PM CDT
Formulating with Citrus: New Developments in Citrus Fragrance Ingredients
By: Michael Britten-Kelly
The aroma chemical aspects and new discoveries in both natural and synthetic citrus ingredients. Of all the ingredients on the perfumer's palette, surely none are more instantly recognizable to the public than those in the citrus category. Fresh juicy oranges, sulfurous tangy grapefruit, tart puckery lemons and heady sweet limes all bring to mind a host of pleasant associations in which taste and smell play an equal part.
Jan 02, 2007 | 09:11 AM CST
The Chemistry of F&F: Physiological Coolants
By: Steve Pringle and David Brassington, Oxford Ch…
New materials and emerging applications. Physiological cooling agents act in a number of ways. In a flavor or fragrance they can be the first impact, leaving a cool sensation on the palate or skin prior to the main aroma being imparted.
Dec 29, 2006 | 03:22 PM CST
Perfumer’s Notes: Javanol
By: Jerzy Bajgrowicz and Antoine Gaillard, Givauda…
The growing scarcity—and resulting increased price—of sandalwood oil explains the fragrance industry’s continuous search for synthetic substitutes. Javanol (Givaudan), prepared from naturally occurring α-pinene, represents a new tool in terms of performance and naturalness of scent. Here we learn the importance of sandalwood for perfumery, its synthetic substitutes, the discovery and use of Javanol.
Oct 25, 2006 | 11:17 AM CDT
Material study: Heterocyclic Nitrogen- and Sulfur-Containing Aroma Chemicals
By: Michael Zviely (O'Laughlin Industries Ltd.)
A look at the two groups that comprise this section of heterocyclic chemicals, with a focus on the aromatic molecules. Of the ca. 20 million chemical compounds presently characterized, almost half are heterocyclic molecules. Heterocyclic molecules are significant due to their abundance in nature, as well as their chemical and biological importance.
Jun 06, 2006 | 03:29 PM CDT
Esters
By: Conrad Schmidt
In a recent article, I discussed the fundamentals of Schiff bases. In this issue, I would like to discuss the basics of esters.
Jun 06, 2006 | 07:43 AM CDT
The Search For Scent
Gliding silently across the canopy of a coastal rainforest in the Masoala Peninsula of northeastern Madagascar, Roman Kaiser knew he was on to something good. “Can you smell this unique scent of White Freesia and Robina — which tree might it be — we have to go closer,” Kaiser said to his ScentTrek teammate and Givaudan executive perfumer, Dave Apel.
Jun 01, 2006 | 07:06 AM CDT
New Aroma Chemicals: Thujone Alternatives
By: Michael Britten-Kelly
Perfumers often use the descriptor “thujone” to describe a particular note in fragrances. However, the odor of thujone itself seems to be inseparable from the character of the essential oils in which it is found. This article will examine the uses of thujone and thujone containing materials in perfumery, and describe some synthetic materials — old and new— that are intended to provide this note.
May 30, 2006 | 02:01 PM CDT
Rose Ketones: Celebrating 30 Years Of Success
By: Alvin Williams
Can you remember life before the rose ketones? Can you remember what rose reconstitutions used to smell like before the rose ketones were available? Probably not. And if you can, you probably weren’t too impressed with them