Natural Microtalc is a Silicate of Hydrated Magnesium that can be used to facilitate the process of production of virgin olive oil without causing alterations in the physical characteristics of the oil.

Olive oil production is an industrial process that involves separating the oil from the other constituents of the olive. Whole, healthy, clean, recently picked and optimally ripe olives are ground into a paste. The paste is then mixed thoroughly prior to centrifugation to separate out the oil.

In most olive growing regions, this process can be hindered at various stages by technical problems arising from what are known as “difficult” pastes, which can be characterised visually and analytically as follows:

Visual characteristics:
a) The paste is too thick and gelatinous.
b) There is little sign of oil on the surface.
c) The decanter outputs dirty oil, with a high fines content and a chocolate-like appearance.

Analytical characteristics:
d) Low extraction yield
e) High oil content in olive pomace / waste water


When Microtalc is added to the olive paste at the mixing stage, its lipophilic action produces the following effects:
• It absorbs the droplets of oil retained in the cell walls, thus forming larger drops and increasing the amount of free oil;
• It prevents the formation of emulsions and breaks up emulsions that have formed;
• It facilitates the break-up of microgels and alters the paste behaviour from liquid retention to free oil;
• It improves the extraction yield;
• It increases the plant’s production capacity;
• It enables the process to be run at a lower temperature (20° to 25°C), since the lipophilic action is temperature-independent.

Because of its high specific surface area (8 m2/g) , Microtalc  improves oil clarity during the horizontal centrifugation stage. Microtalc  is added at the beginning of the second third of the mixing stage, to ensure even dispersion throughout the paste. The amount of Microtalc varies from 0.5% to 2% of the weight of theground olives, depending on just how difficult the paste is. In some cases, more than 2% can be added to correct the paste structure. Because Microtalc is a powder, handling precautions must be observed. To use it correctly, the olive mill must be equipped with a special dosing unit (for more information



As a technological aid in the virgin olive oil extraction process, Microtalc provides the following advantages:
• Increases decanter in-put
• Increases industrial yield
• Provides a fruity oil of high quality
• Permits cold extraction processibility
• Reduces oil content in pomace
• Optimises extraction process
• Reduces production costs



Attended Expoalimentaria 2012 – Perù

October 5, 2012

Claudio Vignoli and Gabriele Casini (CDR srl) attended Expoalimentaria 2012, International trade show that highlights food and beverages, machinery, equipment, inputs, containers and packaging, services, restaurants, and gastronomy.   At CDR’s stand we had the opportunity to meet many experts in connection with olive oil, fish oil and sacha inchi oil producers, […]

VIIth International Symposium on Olive Growing

September 10, 2012

Claudio Vignoli, as main sponsor, will attend the VIIth International Symposium on Olive Growing that will take place in San Juan, Argentina, from 25th to 29th September 2012, the most important scientific olive meeting realized every four years in different countries around the world under the auspice of the International […]

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