The result is a finely-crafted process that separates CST into a number of valuable and renewable materials which can be transformed into various fragrance and flavor molecules. The processing starts with separating the CST into its main components: alpha-pinene and beta-pinene.
Once this has been achieved, further chemical transformations allow us to create valuable fragrance molecules that replicate those that naturally occur in plants such as rose, geranium and lavender. While generating floral scents from paper byproducts may sound like a minor miracle, the reality boils down to a tireless scientific approach.
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We then optimize the various reaction variables, such as temperatures, pressures and durations to produce the best results. Our Jacksonville team has also designed and patented a truly green proprietary process for delivering l-Carvone from d-Limonene, a by-product isolated from the orange peels of the orange juice industry. Our unique process produces ultra-pure l-Carvone, free from chlorides, nitrogen compounds, solvents and toxic reagents. We achieve this using the most environmentally-friendly production methods possible, having developed a process that eliminates millions of liters of wastewater annually, in comparison to more traditional methods.
The end result is an ingredient that provides a refreshing, cool and minty taste to a range of everyday oral care and confectionery products, while also embodying our commitments to sustainability and innovation. Back in Germany, scientists at our Holzminden headquarters are also working on green methods for harnessing aromas and tastes from natural plant materials.
In the early s, we began working on a process that optimizes the recovery of natural flavor molecules from fruits like apple, strawberry and raspberry. It concentrates the natural aromatic fruit ingredients present in the water phase, which can then be infused into the end product. Based on ingenious adsorption and desorption processes, the technology provides an intelligent, highly-effective application of physical principles. These properties are increasingly sought-after by consumers around the world.
Despite all of our achievements to date we recognize that, for a business like ours, sustainability is a constantly evolving and ongoing journey — one that we continue to tackle with energy and urgency.
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Our approach. Back Your career. Search and apply. More Discover our latest roles now. When it comes to protection, functionalisation, and defunctionalisation, these were significant problems when green chemistry started, but the last 25 years have seen a huge development in terms of the methodologies used.
Indeed, much progress has been made in the carbon-hydrogen bond CH activation area in chemistry, and we are increasingly able to use protecting agents, and indeed activating agents, to target one specific position, which is of huge benefit in terms of fewer sets and less wait. The next step is to explore how we can do the same thing but with less chemistry, or even do more with less chemistry; perhaps a different molecule that is an easier target from a certain resource could do the same job?
Put simply, the challenge for chemists is to now try to achieve function with less chemistry. Doing more with less is, of course, something that is not particular to chemistry, and perhaps the approach we now need to take is to look at the service a molecule provides rather than whether we need a specific molecule, and, from that, we may be able to find that a different molecule can provide the very same service, despite the fact that it is almost philosophically interesting for a chemist to say maybe what we need is actually less chemistry or, in fact, smarter chemistry.
In this particular example we tried to tackle the limitation of silver chemistry. The problem there is often catalysts will do them both because they have similar mechanisms.
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Silver is good because it is a terrible hydrogenation catalyst: it is very bad at activating H 2 , it makes the activation of H 2 very complicated, and it has to go through a slightly different mechanism than the other metals, meaning that you can be more selective in efforts to hydrogenate or reduce the functionalities. We were able to harvest that energy and convert it into chemical energy with electrons that need higher energy and are able to activate H 2. Now, we are moving from having to use 20 bars of H 2 to having to use a single atmosphere of H 2 , meaning that we can do the same chemistry with the use of much lower pressures.
CNCs are currently used in a number of areas, and there are people working for environmental remediation, people making electronics, making sensors, developing food applications, and working in packaging who are all using this incredible material. CNCs are constructed from cellulose, and this is any form of cellulose — from plant waste, from paper pulp, from bamboo, and even from bacteria although they will have slightly different properties if they are taken from bacteria — and this cellulose has amazing photonic properties.
They can also self-assemble and can be used to create iridescent films, meaning that they also find applications in areas such as sensing and in numerous exciting photonics applications, too. In our work, we wanted to see how we could apply CNCs to catalysis — that is, as a chiral inducer in enantioselective catalysis — and we wanted to harvest the chirality and use it in the context of energy-selective catalyses. The concept of using a surface to transfer chirality is very difficult, and a lot of effort has been made to achieve this in the past by other teams, who were met with very limited results.
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While the enantiomeric excess is not that good compared to what an organic chemist would like to see from this selective catalysis, our group, however, was able to demonstrate that we could achieve higher enantiomeric excess because the cellulose nanocrystals are able to convey chirality much more effectively than other forms of biopolymers. Moving forwards, we want to try to find applications whereby we can take advantage of the chirality of this material.
We are working very hard on biomass conversion at the moment, and we have some exciting discoveries evolving from this. Similarly, we are also continuing to work on the synthesis of nanoparticles, where we are trying to make nanomaterials, which have potential in a lot of application areas, such as energy, remediation, depollution, and so on. Nanoparticles are very exciting for a more sustainable society, but their synthesis is difficult, and so we are working on making them in ways which use less solvents or often no solvent at all.
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