EP3595459A1 - Procédé de décontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticides - Google Patents
Procédé de décontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticidesInfo
- Publication number
- EP3595459A1 EP3595459A1 EP18714324.3A EP18714324A EP3595459A1 EP 3595459 A1 EP3595459 A1 EP 3595459A1 EP 18714324 A EP18714324 A EP 18714324A EP 3595459 A1 EP3595459 A1 EP 3595459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plants
- fresh
- light pulse
- vegetables
- fruits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 235000013311 vegetables Nutrition 0.000 title claims abstract description 36
- 235000021022 fresh fruits Nutrition 0.000 title claims abstract description 33
- 239000000575 pesticide Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005286 illumination Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000007723 transport mechanism Effects 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 93
- 235000021251 pulses Nutrition 0.000 description 66
- 238000005202 decontamination Methods 0.000 description 20
- 235000013399 edible fruits Nutrition 0.000 description 13
- 240000008415 Lactuca sativa Species 0.000 description 11
- 235000003228 Lactuca sativa Nutrition 0.000 description 11
- 230000007423 decrease Effects 0.000 description 11
- 230000005855 radiation Effects 0.000 description 10
- 230000003588 decontaminative effect Effects 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 108010060806 Photosystem II Protein Complex Proteins 0.000 description 6
- 244000300264 Spinacia oleracea Species 0.000 description 6
- 235000009337 Spinacia oleracea Nutrition 0.000 description 6
- 235000013339 cereals Nutrition 0.000 description 5
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 5
- 230000000593 degrading effect Effects 0.000 description 5
- 238000001782 photodegradation Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 150000002632 lipids Chemical class 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 235000016709 nutrition Nutrition 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 235000021466 carotenoid Nutrition 0.000 description 3
- 150000001747 carotenoids Chemical class 0.000 description 3
- 229930002868 chlorophyll a Natural products 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000002615 epidermis Anatomy 0.000 description 3
- 230000000855 fungicidal effect Effects 0.000 description 3
- 239000000417 fungicide Substances 0.000 description 3
- ZXQYGBMAQZUVMI-RDDWSQKMSA-N (1S)-cis-(alphaR)-cyhalothrin Chemical compound CC1(C)[C@H](\C=C(/Cl)C(F)(F)F)[C@@H]1C(=O)O[C@@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 ZXQYGBMAQZUVMI-RDDWSQKMSA-N 0.000 description 2
- 239000005730 Azoxystrobin Substances 0.000 description 2
- 239000005782 Fluopicolide Substances 0.000 description 2
- 239000005923 Pirimicarb Substances 0.000 description 2
- 239000005821 Propamocarb Substances 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- WFDXOXNFNRHQEC-GHRIWEEISA-N azoxystrobin Chemical compound CO\C=C(\C(=O)OC)C1=CC=CC=C1OC1=CC(OC=2C(=CC=CC=2)C#N)=NC=N1 WFDXOXNFNRHQEC-GHRIWEEISA-N 0.000 description 2
- 229930002875 chlorophyll Natural products 0.000 description 2
- 235000019804 chlorophyll Nutrition 0.000 description 2
- 229930002869 chlorophyll b Natural products 0.000 description 2
- NSMUHPMZFPKNMZ-VBYMZDBQSA-M chlorophyll b Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C=O)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 NSMUHPMZFPKNMZ-VBYMZDBQSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007857 degradation product Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- GBOYJIHYACSLGN-UHFFFAOYSA-N fluopicolide Chemical compound ClC1=CC(C(F)(F)F)=CN=C1CNC(=O)C1=C(Cl)C=CC=C1Cl GBOYJIHYACSLGN-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000002917 insecticide Substances 0.000 description 2
- 239000005910 lambda-Cyhalothrin Substances 0.000 description 2
- 239000000447 pesticide residue Substances 0.000 description 2
- YFGYUFNIOHWBOB-UHFFFAOYSA-N pirimicarb Chemical compound CN(C)C(=O)OC1=NC(N(C)C)=NC(C)=C1C YFGYUFNIOHWBOB-UHFFFAOYSA-N 0.000 description 2
- WZZLDXDUQPOXNW-UHFFFAOYSA-N propamocarb Chemical compound CCCOC(=O)NCCCN(C)C WZZLDXDUQPOXNW-UHFFFAOYSA-N 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 244000075850 Avena orientalis Species 0.000 description 1
- 235000002566 Capsicum Nutrition 0.000 description 1
- 240000007154 Coffea arabica Species 0.000 description 1
- 239000005892 Deltamethrin Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 240000008620 Fagopyrum esculentum Species 0.000 description 1
- 235000009419 Fagopyrum esculentum Nutrition 0.000 description 1
- 101000818579 Homo sapiens Zinc finger and BTB domain-containing protein 22 Proteins 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 244000070406 Malus silvestris Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 241000758706 Piperaceae Species 0.000 description 1
- 241000209056 Secale Species 0.000 description 1
- 235000007238 Secale cereale Nutrition 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 102100021131 Zinc finger and BTB domain-containing protein 22 Human genes 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000021016 apples Nutrition 0.000 description 1
- 235000016213 coffee Nutrition 0.000 description 1
- 235000013353 coffee beverage Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229960002483 decamethrin Drugs 0.000 description 1
- OWZREIFADZCYQD-NSHGMRRFSA-N deltamethrin Chemical compound CC1(C)[C@@H](C=C(Br)Br)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 OWZREIFADZCYQD-NSHGMRRFSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 235000011869 dried fruits Nutrition 0.000 description 1
- 239000012167 epicuticular wax Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 235000021374 legumes Nutrition 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- QHOQHJPRIBSPCY-UHFFFAOYSA-N pirimiphos-methyl Chemical group CCN(CC)C1=NC(C)=CC(OP(=S)(OC)OC)=N1 QHOQHJPRIBSPCY-UHFFFAOYSA-N 0.000 description 1
- 230000008654 plant damage Effects 0.000 description 1
- 238000012667 polymer degradation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000006950 reactive oxygen species formation Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 235000019695 salad leaves Nutrition 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 150000003736 xenon Chemical class 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B7/00—Preservation of fruit or vegetables; Chemical ripening of fruit or vegetables
- A23B7/015—Preserving by irradiation or electric treatment without heating effect
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B2/00—Preservation of foods or foodstuffs, in general
- A23B2/50—Preservation of foods or foodstuffs, in general by irradiation without heating
- A23B2/53—Preservation of foods or foodstuffs, in general by irradiation without heating with ultraviolet light
Definitions
- the invention relates to a pesticide decontamination process present on the surface of fresh vegetables, fresh fruits, plants or live plants.
- the invention also relates to a pesticide decontamination device present on the surface of fresh vegetables, fresh fruits, plants or living plants.
- the invention also relates to the use of light pulses to decontaminate these fresh vegetables, fresh fruits, living plants or plants.
- Plants means a generic designation describing fresh vegetables, fresh fruits, live plants and live plants.
- FR 2 941 848 It is known from FR 2 941 848 a process for decontaminating maize grains contaminated on the surface with pyrimiphos-methyl or deltamethrin.
- This method comprises a step of exposing the grains to broad-spectrum light pulses, with an energy density of at least 2 J / cm 2 , a pulse duration of 100 to 700 microseconds, and a flash or pulse frequency. draws from 0.8 to 10 Hz.
- the process of the application FR 2 941 848 is not applicable to vegetables and fresh fruits, plants or live plants, including fleshy plants and fleshy fruits. These plants and fleshy fruits are characterized in particular by a high concentration of water, that is to say greater than 30% or 50% of their mass.
- the contaminated surface of fresh vegetables, fresh fruits, live plants or plants to at least one light pulse, the duration of the light pulse or pulses being between 50 ⁇ et and 2 s, and
- 80% of the energy of the light pulse (s) is obtained at wavelengths between 100 nm and 280 nm, and the energy density delivered by each light pulse on the surface of fresh vegetables, fresh fruits, plants or living plants is between 0.1 kJ / m 2 and 3 kJ / m 2 .
- the judicious choice of the energy density of the light pulses of the order of 0.1 J / cm 2 (ie 1 kJ / m 2 ), sufficiently effective to eliminate a substantial quantity of pesticides while allowing to avoid degrade the cells of the plants.
- UV-C ultraviolet-C
- UV-B ultraviolet type B
- UV-A ultraviolet type A
- UV-A penetrate deeply into the tissues, increasing the risk of damaging its cells and degrading the plant as well.
- the energy density required for the invention is unrelated to the energy density of the light pulses used in the process of the application FR 2 941 848 which is of the order of 20 kJ / m 2 .
- UV-C radiation makes it possible to obtain a better efficiency in terms of photo-degradation of pesticide residues and their degradation products, present on the surface of plants, and would be less harmful than the UV-Cs.
- UV-C radiation is sufficiently energetic to break chemical bonds, or even ionize certain atoms and molecules.
- Absorption at particular wavelengths may be associated with resonance effects in which certain energy levels in an atom or molecule are almost equal to the energy of the incident photons.
- An atomic or molecular excitation can result from the absorption of photons by an energy level of the molecule.
- An electron can also be ejected from an atom when the resonant energy of the incident photon exceeds that of the binding energy of the electron of the atom.
- These electrons can be recovered by molecular oxygen and lead to the formation of reactive oxygen species that can enhance the photo-degradation effect.
- UV-C radiation makes it easier to photo-degrade compounds (pesticides, pesticide residues, pesticide degradation products) that are often less conjugated than the starting molecules (Tse, KC C, FMF Ng, and KN Yu (2006).
- Photo-degradation of PADC by UV radiation at various wavelengths Polymer Degradation and Stability 91 (10): 2380-2388).
- UV-C also have a better safety to the plants to be treated.
- UV-C radiation which is more energetic than UV-B, UV-A and visible radiation, is advantageously absorbed on the surface of plants, producing a particularly advantageous photo-degradation effect of pesticides.
- UV-C radiation is less penetrating in plant tissues due to the microrelief of crystals of epicuticular waxes that cause diffusion on the surface of plants.
- Embodiments of this decontamination process may include one or more of the features of the dependent claims.
- Exposure for one second or less of the plant to at least one light pulse further accelerates the implementation of the decontamination process.
- the use of several successive light pulses makes it possible to reduce the energy density of each light pulse and thus to reduce the warming of the surface of the plants.
- the invention also relates to a decontamination device according to claim 8.
- Embodiments of this apparatus may include one or more of the features of the dependent claims.
- the invention also relates to a use of light pulses for decontaminating fresh vegetables, fresh fruits, plants or live plants according to claim 11.
- FIG. 1 is a schematic illustration of a plant decontamination device according to the invention
- FIG. 2 is a flowchart of a plant decontamination process using the apparatus of FIG. 1;
- FIGS. 3 to 7 are photos of spinach leaf cells treated with different light pulse energy densities used during the application of the method according to FIG. 2;
- Figures 8 to 11 are graphs illustrating the degradation of treated lettuce leaves with different energy densities.
- Figure 1 shows an apparatus 2 for decontaminating plants 4, the outer surface of which is contaminated with pesticides.
- the device 2 is particularly suitable for plants or fleshy fruits.
- the plants or fleshy fruits are chosen from the following non-exhaustive list:
- the apparatus 2 comprises:
- illumination devices 6A and 6B capable of generating light pulses, respectively, 8A and 8B, and
- the devices 6A and 6B are identical so that only the device 6A is described in more detail later.
- the device 6A generates only UV-C pulses, that is to say light pulses whose bulk of the energy is concentrated in the wavelengths between 100 nm and 280 nm.
- most of the energy is meant that 80% or preferably 90% or even more preferably 95% of the energy of the generated light pulse is concentrated in this range of wavelengths.
- the device 6A preferably, the device 6A generates light pulses, the bulk of the energy is obtained at wavelengths between 200 nm and 280 nm. For example, here, 80% or 90% or 95% of the energy of the light pulses generated by the device 6A is concentrated in the wavelengths between 245 nm and 280 nm.
- the duration of each light pulse is less than two seconds and is greater than 50 ⁇ .
- the duration of each light pulse is between 300 ⁇ et and 1 second.
- the energy density, also known by the term "fluence"("radiantfluence” in English), of each light pulse of all the light pulses applied to the same plant 4 is less than or equal to 3 kJ. / m 2 and, generally, greater than or equal to 0.1 kJ / m 2 or 0.5 kJ / m 2 .
- the energy density of each light pulse is less than 2 kJ / m 2 or 1 kJ / m 2 .
- the power of each light pulse is here less than 2 kW / m 2 .
- the total energy density of all the light pulses applied to the plant 4 is less than 3 kJ / m 2 or 2 kJ / m 2 .
- the amount of energy applied to the surface of the plant 4 by all the light pulses advantageously remains less than 3 kJ / m 2 or 2 kJ / m 2 , or even advantageously less than 1 kJ / m 2 .
- the device 6A is made from LED ("Light Emitting Diode”) emitting only in the desired wavelength range.
- the transport device 10 is able to move the plants 4 one after the other in front of each device 6A and 6B of illumination so that their outer surface is directly exposed to the light pulses 8A and 8B.
- the device 10 is equipped with a mechanism 12 for exposing both the front face and the rear face of the plant 4 to the light pulses.
- the mechanism 12 is able to return the plant 4. Indeed, when the plant 4 is vis-à-vis the device 6A, only the front face of the plant 4 is directly exposed to the light pulse 8A. Its rear face, located on the opposite side to its front face, is in turn not exposed directly to the light pulses 8A. So that its rear face is directly exposed to the light pulse 8B, the mechanism 12 returns the plant 4 after its passage in front of the device 6A and before its passage in front of the device 6B.
- the device 10 here comprises two conveyor belts 16 and 18 arranged vertically one above the other.
- the treadmills 16 and 18 circulate in opposite directions from each other.
- the direction of movement of the treadmills 16 and 18 is represented by horizontal arrows.
- the treadmills 16 and 18 are slightly offset relative to each other in a horizontal direction so that the plant 4, when it reaches the right end of the treadmill 16, falls on the treadmill 18
- This arrangement of the conveyor belts 16 and 18 makes it possible to turn the plant 4 over when it falls off the conveyor belt 16 on the conveyor belt 18 and thus forms the mechanism 12.
- the conveyor belt 16 successively and in order the plants 4 of a zone 20 not illuminated by the device 6A to an area 21 illuminated by the device 6A and in a zone 22 not illuminated by the device 6A.
- plant 4 reaches the right end of zone 22, it falls into a first non-illuminated zone 23 of conveyor belt 18.
- the conveyor belt 18 successively and in sequence, the plant 4 of the non-illuminated area 23 to an area 24 illuminated by the device 6B and in a zone 25 not illuminated by the device 6B.
- the illuminated areas 21 and 24 are the areas within which the surfaces of the plants 4 are directly exposed, respectively, to the light pulses 8A and 8B. When the plant 4 reaches the zone 25, it is decontaminated pesticides present on its surface.
- the apparatus 2 also comprises a device 30 control unit 6A, 6B and 10.
- the control device 30 is connected to the devices 6A, 6B and 10.
- the unit 30 comprises:
- a programmable microprocessor 32 a programmable microprocessor 32, and a memory 34 connected to the microprocessor 32.
- the memory 34 includes in particular all the instructions and data necessary for the execution of the method of FIG. 2.
- step 50 of supplying the plant 4 whose surface is contaminated with pesticides.
- plant 4 is deposited in zone 20 and then fed by conveyor belt 16 into zone 21.
- a step 52 in the area 21, the entire front face of the plant 4 is exposed to a set of one or more light pulses 8A.
- the number of light pulses is typically between 1 and 5.
- the frequency of the pulses is chosen so that the front face of the plant 4 is not exposed to the UV-C radiation of the device 6A for more than 2 consecutive seconds or 1 second consecutive.
- the number of light pulses to which the plant 4 is exposed is, for example, adjusted by adjusting the speed of the treadmill 16 and / or by adjusting the frequency of the light pulses 8A emitted by the device 6A.
- the frequency of the light pulses 8A is less than 200 Hz and preferably less than 5 Hz or 2 Hz.
- the frequency of the light pulses 8 A is also greater than 0.5 Hz.
- step 56 the plant 4 is exposed this time to the light pulses 8B. This step takes place, for example, as step 52. However, during step 56, it is the rear face of the plant 4 which is decontaminated.
- the treatment of the plant 4 can continue.
- the plant 4 is brought to a packaging line on which it undergoes the various operations necessary for its shipment to consumers or to a storage location.
- the sprayed sheets were then stored overnight in a cold room and the next morning, the process shown in Figure 2 was applied.
- the sheets were each subjected to a single light pulse lasting one second with an energy density equal to 1 kJ / m 2 generated by the device 6A at a length of wave of 265 nm to plus or minus 10 nm.
- a light pulse energy density ranging from 0.1 kJ / m 2 to 3 kJ / m 2 and preferably from 0.5 kJ / m 2 to 2 kJ / m 2 .
- the method of Figure 2 eliminates a substantial amount of pesticides without damaging plants or fleshy fruits and without degrading the organoleptic and nutritional qualities. as well as the shelf life of the treated plant even if this plant is a plant or a fleshy fruit.
- FIGS. 3 to 7 are photographs of the epidermis of lettuce leaves which have been exposed to different doses of UV-C. More precisely, in the photos of FIGS. 3 to 7, the energy densities used were respectively 0.85 kJ / m 2 , 1.7 kJ / m 2 , 3.4 kJ / m 2 and 6, 8 kJ / m 2 and compared to lettuce leaves controls not exposed to UV-C doses. These photos show that as long as the energy density used remains below 3 kJ / m 2 , the cells of the epidermis of lettuce leaves are little or no altered. On the other hand, for energy densities higher than 3 kJ / m 2 , the cells of the epidermis of lettuce leaves are damaged.
- FIG. 8 shows the evolution after 2 days, 4 days and 6 days of the photosystem II performance of the photosynthesis chain of the lettuce leaves each having been exposed to the same UV-C dose as those described with reference to FIGS. Figures 3 to 7. More precisely, this graph represents the evolution of a performance index of photosystem II. The higher this index, the better the photosystem II. The initial value of this index at day 0, that is to say before the application of the decontamination process, is represented by a vertical bar 70.
- each group 72, 74 and 76 comprises five vertical bars corresponding, respectively, to the unexposed control (0 kJ / m 2 ) and light pulses of equal energy density, 0.85 kJ / m 2 , 1.7 kJ / m 2 , 3.4 kJ / m 2 and 6.8 kJ / m 2 applied on day 0.
- the legend to the left of the graph allows, thanks to the texture of the vertical bars, to identify the corresponding energy density applied on day 0.
- the photosystem II is irreparably damaged by a light pulse of energy density equal to 6.8 kJ / m 2 while for the other energy densities tested, the photosystem II ends up repairing itself.
- Photosystem II regains or exceeds its initial performance much more rapidly when the energy density of the light pulses is less than 3 kJ / m 2 or 2 kJ / m 2 .
- FIG. 9 represents the chlorophyll content a and b for lettuce leaves having been exposed to the same UV-C dose as those described with reference to FIG. 8.
- the abscissa indicates the energy density of the light pulses used.
- the ordinate axis indicates the amount of chlorophyll. For each energy density of the light pulses:
- This graph shows that the use of light pulses with an energy density greater than 3 kJ / m 2 substantially decreases the amount of chlorophyll a. and b when this is not the case if the energy density of the light pulses remains less than 3 kJ / m 2 .
- FIG. 10 represents the carotenoid content for lettuce leaves having been exposed to the same UV-C doses as those described with reference to FIG. 8.
- the abscissa indicates the energy density of the light pulses used.
- the ordinate axis indicates the amount of carotenoid measured. This graph shows that the use of light pulses with an energy density greater than 3 kJ / m 2 substantially decreases the amount of carotenoid whereas this is not the case if the energy density of the light pulses is less than 3 kJ / m 2 .
- FIG. 11 represents a degradation index of membrane lipids for lettuce leaves having been exposed to the same UV-C doses as those described with reference to FIG. 8.
- the degradation of membrane lipids denotes the peroxidation of membrane lipids.
- the x-axis indicates the energy density of the light pulses used.
- the y-axis indicates the value of this degradation index. The higher the value of this index, the more the lettuce leaf is damaged.
- This graph shows that the use of light pulses with an energy density greater than 3 kJ / m 2 significantly increases the degradation of membrane lipids, whereas this is not the case if the energy density of the light pulses remains lower. at 3 kJ / m 2 .
- illumination devices are possible.
- a Xenon flash lamp can be used.
- the illumination device further comprises a filter placed between this Xenon flash lamp and the plant 4. This filter passes only type C ultraviolet in the desired range of wavelengths.
- the devices 6A and 6B are placed vertically vis-a-vis and the plant 4 falls vertically between these devices 6A and 6B. During its fall, the devices 6A and 6B illuminate the two opposite faces of the plant 4 so that the entire surface of the plant 4 is decontaminated.
- the overturning mechanism is omitted. Indeed, in some cases, only the front face of the plant is contaminated by pesticides. In this case, it is useless to return the product to treat its back side.
- the described method can also be applied to plants or fruits before they are picked.
- the device 6A is moved to be vis-à-vis the plant or the fruit to be treated even if this plant or this fruit has not yet been harvested.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cultivation Of Plants (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1752185A FR3063974B1 (fr) | 2017-03-17 | 2017-03-17 | Procede de decontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticides |
| PCT/FR2018/050633 WO2018167439A1 (fr) | 2017-03-17 | 2018-03-16 | Procédé de décontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3595459A1 true EP3595459A1 (fr) | 2020-01-22 |
Family
ID=59745975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18714324.3A Withdrawn EP3595459A1 (fr) | 2017-03-17 | 2018-03-16 | Procédé de décontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticides |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3595459A1 (fr) |
| FR (1) | FR3063974B1 (fr) |
| WO (1) | WO2018167439A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3098683B1 (fr) | 2019-07-19 | 2021-06-25 | Uv Boosting Sas | Dispositif pour l’amélioration du rendement et de la qualité des végétaux par exposition aux UVs, procédé et utilisations associées |
| FR3127676B1 (fr) | 2021-10-01 | 2025-04-11 | Asclepios Tech | Dispositif de traitement photo-biologique amélioré |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2177465B1 (es) * | 2001-04-19 | 2005-04-01 | Consejo Superior De Investigaciones Cientificas | Tratamiento postcosecha de frutas y hortalizas mediante pulsos de irradiacion ultravioleta. |
| GB0120993D0 (en) * | 2001-08-30 | 2001-10-24 | Quay Technologies | Pulsed UV light source |
| WO2010085513A1 (fr) * | 2009-01-22 | 2010-07-29 | Horizon Seed Technologies, Inc. | Traitements par lumière ultraviolette pour augmenter les rendements en grains |
| FR2941848B1 (fr) * | 2009-02-09 | 2011-10-21 | Alain Mimouni | Detoxification des produits contamines par des toxines et notamment mycotoxines |
| GB2517022A (en) * | 2013-05-30 | 2015-02-11 | Apollo Uv Ltd | Apparatus and method of killing pathogens on the surface of a product |
| WO2016151446A1 (fr) * | 2015-03-25 | 2016-09-29 | Zavatti Eleonora | Appareil et procédé de traitement de produits végétaux |
| US20160353785A1 (en) * | 2015-05-14 | 2016-12-08 | Cougar Packaging Concepts, Inc. | Pulsed Light Treatment System with Rotary Light Table |
| CN104920924A (zh) * | 2015-06-26 | 2015-09-23 | 普宁市福康科技有限公司 | 一种基于led脉冲光降解农药的生长装置 |
| EP3143869A1 (fr) * | 2015-09-17 | 2017-03-22 | Université d'Avignon et des Pays de Vaucluse | Procédé de stimulation de la résistance des plantes aux stress biotique par exposition à un rayonnement uv |
-
2017
- 2017-03-17 FR FR1752185A patent/FR3063974B1/fr not_active Expired - Fee Related
-
2018
- 2018-03-16 EP EP18714324.3A patent/EP3595459A1/fr not_active Withdrawn
- 2018-03-16 WO PCT/FR2018/050633 patent/WO2018167439A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018167439A1 (fr) | 2018-09-20 |
| FR3063974B1 (fr) | 2020-07-31 |
| FR3063974A1 (fr) | 2018-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3595459A1 (fr) | Procédé de décontamination de legumes frais, fruits frais, plantes ou vegetaux vivants dont la surface est contaminee par des pesticides | |
| EP2247187B1 (fr) | Procédé de fabrication de produits de boulangerie décontaminés, produits de boulangerie décontaminés et dispositif de mise en oeuvre dudit procédé | |
| WO2018134181A1 (fr) | Dispositif et procede de traitement par des ondes acoustiques de haute frequence | |
| WO2013164798A1 (fr) | Conditionnement de feuilles sechees en capsules hermetiques | |
| WO2021013578A1 (fr) | Dispositif pour l'amelioration du rendement et de la qualite des vegetaux par exposition aux uvs, procede et utilisations associees | |
| LU84161A1 (fr) | Procede de traitement de legumes en vue de leur presentation a la vente | |
| US20030044311A1 (en) | Applications for use of pulsed light | |
| FR3058733A1 (fr) | Methode de validation d'un procede de sterilisation comportant deux contaminations successives | |
| EP4117417A1 (fr) | Dispositif mobile delivrant des impulsions lumineuses et son utilisation pour l'elimination de pathogenes | |
| BE1026770B1 (fr) | Système d'échange, assemblage et procédé pour traitement phytosanitaire du bois | |
| EP0279726A1 (fr) | Procédé de conservation de denrées végétales crues périssables et conditionnées | |
| FR2941848A1 (fr) | Detoxification des produits contamines par des mycotoxines e et des residus phytosanitaires. | |
| WO2020020595A1 (fr) | Procédé d'élimination de microorganismes présents dans et/ou à la surface d'un matériau à décontaminer | |
| EP0470017B1 (fr) | Procédé pour stabiliser des plantes végétales | |
| FR3046518A1 (fr) | Applicateur micro-ondes monomode, dispositif et procede de traitement thermique de produits | |
| EP4228439A1 (fr) | Dispositif et procede d'epluchage de fruits a coque, notamment de chataignes | |
| Vawa et al. | Evaluation de l’efficacite d’une formulation de fluopyram (velum prime) contre deux nematodes Radopholus similis et Pratylenchus coffeae, en culture de bananier en Cote d’ivoire | |
| EP1536696A1 (fr) | Procede permettant d'empecher la formation de taches au niveau de la surface de champignons et champignons ainsi obtenus | |
| US20190320671A1 (en) | Irradiation of food products | |
| FR2706252A1 (fr) | Procédé et dispositif de désinsectisation de fruits. | |
| RU2321222C1 (ru) | Способ подготовки к хранению нектаринов свежих специального назначения | |
| WO2003030638A2 (fr) | Procede d'inhibition de la germination de produits vegetaux | |
| FR2899063A1 (fr) | Procede et installation de traitement de produits en morceaux tels que des salades ou des legumes decoupes en vue de leur conditionnement | |
| RU2321208C1 (ru) | Способ подготовки к хранению нектаринов свежих специального назначения | |
| RU2322787C1 (ru) | Способ подготовки к хранению нектаринов свежих специального назначения |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20190910 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20210412 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20210824 |