High-quality essential oils and essences thanks to vacuum distillation

The core competency of Capua 1880, a company based in southern Italy, is the production of high-quality essential oils from citrus fruits.

ID: 1561486
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(businesspress24) - These oils are used in many areas, including the production of perfumes, where they are used as top notes, or in foods for flavouring. After the oil/water emulsion has been extracted from the fruit skins, the separated raw oils are refined in distillation processes. This produces extremely pure oils that have a precisely defined scent and are not influenced by other ingredients in terms of fragrance or colour. Capua 1880 uses vacuum technology from Busch Vacuum Solutions for the distillation processes, which are carried out in thin-film evaporators or short-path distillers depending on the type of fruit. All the distillers use only COBRA screw vacuum pumps that are free of operating fluids. The frequency-controlled vacuum pumps precisely and reliably guarantee the required vacuum level which, together with the temperature, ensures the desired product quality.

Capua 1880 has been producing essences from citrus fruits since 1880. The company has two production plants located in Calabria, in the middle of the world''s largest bergamot growing area, a cross between lemon and bitter orange, which was specially bred for the production of essential oils. Over 96 percent of the world''s production of bergamot is grown in Calabria, while Capua 1880 is the world''s largest producer of natural essences from this fruit. However, oils are also extracted from lemons, oranges, blood oranges and mandarins. Between October and May, the citrus fruits are harvested and processed at Capua 1880''s Reggio Calabria plant. The extraction of the oil is similar for all citrus fruits. The essential oils containing water are extracted mechanically from the fruit skins on 12 production lines. First, the remaining solids and then the water are separated from this emulsion in the downstream multistage centrifugal separators. The raw oils extracted in this way are refined throughout the year at the Campo Calabro plant and mixed for individual customers according to the desired recipe in order to always obtain the same fragrance. In addition to state-of-the-art production, thorough quality control ensures that the essential oils correspond precisely to the specifications of the various customers. 95 percent of the bergamot essences produced in this way are used in perfume production. Many of the world''s best-known perfume manufacturers use bergamot oil from Capua 1880 as the top note for their perfumes. The remaining five percent is used in the beverage industry for flavouring.



The raw oils extracted in the first stage are refined on a total of five distillation lines and then temporarily stored in a controlled atmosphere. Distillation of the essential raw oils must be carried out as carefully as possible so that the scents are not influenced. As early as the late 1990s, Capua 1880 therefore decided to switch the vacuum supply of its thin-film evaporators and short-path distillers to dry COBRA screw vacuum technology from Busch. The liquid ring vacuum pumps previously used only achieved a vacuum of 40 to 60 millibar. A higher temperature was therefore required for evaporation. This was 80 to 90 degrees Celsius for thin-film evaporators, depending on the type of fruit. All thin-film evaporators are now equipped with COBRA screw vacuum pumps, which maintain a much higher permanent vacuum. The advantage in this case is that the distillation processes can be carried out at ambient temperature. Varying ambient temperatures or different oils can mean that fine adjustments of the operating vacuum and the pumping speed of the vacuum pump are required. This is possible simply by regulating the frequency-controlled motor of the vacuum pump.
Short-path distillers operate at even lower pressures. This is why vacuum boosters are installed upstream of the COBRA screw vacuum pumps installed there. These vacuum boosters are also driven by frequency-controlled motors and can therefore be regulated as required. In short-path distillation, the exact operating pressures also depend on the oils to be distilled. The operating temperatures are usually slightly higher than the ambient temperature but significantly lower than when liquid ring vacuum pumps were still used.

COBRA screw vacuum pumps from Busch have been specially developed for applications in which low pressures and the compression of extracted gases and vapours without operating fluids are necessary, for example to prevent contamination between the gas or vapour with an operating fluid.

The major difference to the previously used liquid ring vacuum pumps is that COBRA screw vacuum pumps do not require any operating fluid to compress the process gas. This is why it is called a "dry" screw vacuum pump.
In COBRA screw vacuum pumps, two screw-shaped rotors rotate in opposite directions. The extracted vapours are trapped between the cylinder and screw chambers, compressed, and transported to the gas outlet. During the compression process the screw rotors do not come in contact with each other or the cylinder. Precise manufacturing and minimal clearance between the moving parts enable this operating principle and, in addition, guarantee a low ultimate pressure of



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Busch Vacuum Solutions is one of the world’s largest producers of vacuum pumps, vacuum systems, blowers and compressors.
Its extensive product portfolio comprises solutions for vacuum and overpressure applications in all industries, including the chemical, semiconductor, medical technology, plastics, and food sectors. It also covers the design and construction of customized vacuum systems, as well as a global service network.
The Busch group is a family-owned company and is still managed by the Busch family. Busch Vacuum Solutions has 3,500 employees in more than 60 companies in over 40 countries worldwide. Busch is headquartered in Maulburg, in southwest Germany. This is the location of Busch SE headquarters, as well as the German production facility and German sales company. In addition to Maulburg, Busch also has its own production plants in Switzerland, the UK, Czech Republic, Korea and the USA.

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Jasmin Markanic
Coordinator Global Press & Media Relations

+49 (0) 7622 681-3376
Jasmin.markanic(at)busch.de

Busch Vacuum Solutions
Schauinslandstraße 1
79689 Maulburg, Germany

www.buschvacuum.com



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published by: SabrinaHeinecke
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Date: 10/14/2020 - 05:36
Language: English
News-ID 1561486
Character count: 3771
Kontakt-Informationen:
Firma: Busch Vacuum Solutions
Ansprechpartner: Jasmin Markanic Feedback to businesspress24.com about Pressrelease-id:
Stadt: Maulburg
Telefon: +49 (0) 7622 681-3376

Meldungsart: Success
Versandart: send
Freigabedatum: 14.10.2020
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