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The power of Pressure-Drop
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The power of Pressure-Drop
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Swell-drying
Drying intensification by D.I.C.
Traditional drying |
Swell-drying |
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| Raw material (90% Moisture) | ||
| Preparation (pitting, peeling, cleaning, cutting) | ||
| Drying |
4 to 6 hours
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~15 hours
Difficulty reaching less than 5% |
D.I.C. (20s)
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| Drying to 5% |
2 to 3 hours
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Storing
< 12 months |
Packaging |
Storing
> 24 months |
Expanded structure (crispy)
Grinding ease
Fast rehydration kinetics
Good nutritional characteristics
High organoleptic quality
Debacterized products (baby-food)
Decontamination (pasteurization, sterilization)
Eliminates vegetative bacteria and bacterial spores (E.Coli, Salmonella, Listeria ...)
Reduction of the number of bacteria up to 4 log
Harmless for the product, no treatment-related degradation
Process in agreement with organic certification
Meets the highest requirements in terms of food safety
Hundreds of food, cosmetics, pharmaceuticals are now successfully decontaminated:
fresh or dried spices (parsley, Provence herbs, basil, pepper)
garlic, mushrooms, medicinal herbs (licorice, mint, nettle ...), algae, microalgae
Material may be processed in the form of leaves, pieces or powder
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| Spore before processing | ||
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| Spore after processing | ||
Post-harvest rice processing
Drying intensification by D.I.C.
Traditional drying |
D.I.C. + Drying |
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Paddy rice harvesting |
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D.I.C. (30s)
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8 hours
+ Tempering cycles 24 hours |
Drying |
2 hours
No tempering steps required |
| Sorting | ||
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Brown rice
Cooking 40-60 min |
Shelling |
Brown rice
Cooking 12-16 min |
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White rice
Cooking 18-20 min |
Abrasion |
White rice
Cooking 7-9 min |
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Broken rice rate 15 to 40%
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Broken rice rate 1 to 3%
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Storing < 1 year
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Storing > 2 years
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Extraction of volatiles compounds
Extraction of volatile fractions in minutes (2 to 4 min), including essential oil
(against a few hours with hydro or steam distillation)
Extracted essential oil in water emulsion
Optional separation or stabilization of the emulsion
No thermal degradation
Time and cost of operation reduced
Very small amount of added water (less than 80 kg / ton of dry material)
Extraction of non-volatile compounds
Intensified by D.I.C. pretreatment
Better access for the solvent to extractable molecules
Improves the extraction yields (30% to 800%)
Reduces extraction time
Reduces the amount of solvent and energy used
Deodorization before antioxidant extraction is possible
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DIC : Instant Controlled pressure Drop RM : Raw Material HD : Material after hydrodistillation SE : Solvent extraction UAE : Ultrasonic assisted extraction |
Extraction example of a compound contained in the orange peel, by combining different methods Allaf T; Tomao V; Ruiz K; Chemat F. Instant controlled pressure drop technology and ultrasound assisted extraction for sequential extraction of essential oil and antioxidants. Ultrasonics Sonochemistry 2013, 20(1),239-246. |
