Non-Thermal Plasma Treatment of Agricultural Seeds for Stimulation of Germination, Removal of Surface Contamination and Other Benefits: A Review

Randeniya, L. K.; Groot, Gerard J. J. B. de

doi:10.1002/ppap.201500042

Cited by 216 publications

(157 citation statements)

References 39 publications

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“…In general, two main factors have been claimed to account for the generally observed improvement of germination (although this result is by no means universal 12–15 ): i) increase in the water uptake through a partially etched seed coat 11, 16, 17 and ii) the sterilization of the plasma treated seeds 18–23 . Other evidences such as the conversion of the surface state of the plasma treated seeds in hydrophilic 10, 24–26 or the occurrence of coat plasma etching observed by electron microscopy analysis 10, 17, 25, 27 have been also encountered.…”

Section: Introductionmentioning

confidence: 99%

Surface chemistry and germination improvement of Quinoa seeds subjected to plasma activation

Gómez‐Ramírez

López‐Santos

Cantos

et al. 2017

Sci Rep

101

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Plasma treatment is recognized as a suitable technology to improve germination efficiency of numerous seeds. In this work Quinoa seeds have been subjected to air plasma treatments both at atmospheric and low pressure and improvements found in germination rate and percentage of success. Seed water uptake by exposure to water vapor, although slightly greater for plasma treated seeds, did not justify the observed germination improvement. To identify other possible factors contributing to germination, the chemical changes experienced by outer parts of the seed upon plasma exposure have been investigated by X-ray photoemission spectroscopy (XPS) and scanning electron microscopy (SEM-EDX). XPS revealed that the outer layers of the Quinoa plasma treated seeds were highly oxidized and appeared enriched in potassium ions and adsorbed nitrate species. Simultaneously, SEM-EDX showed that the enrichment in potassium and other mineral elements extended to the seed pericarp and closer zones. The disappearance from the surface of both potassium ions and nitrate species upon exposure of the plasma treated seeds to water vapor is proposed as a factor favoring germination. The use of XPS to study chemical changes at seed surfaces induced by plasma treatments is deemed very important to unravel the mechanisms contributing to germination improvement.

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Section: Introductionmentioning

confidence: 99%

Surface chemistry and germination improvement of Quinoa seeds subjected to plasma activation

Gómez‐Ramírez

López‐Santos

Cantos

et al. 2017

Sci Rep

101

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“…Through bombardment of active particles on to the material surface, atmospheric‐pressure plasma could rapidly etch and stripe the material surface with no or minimal toxic residue. The strong surface modification ability of plasma makes it a suitable technology for food applications that would benefit from surface modification, such as the handling of grain or cereal to improve their textural characteristics, germination, and cooking behavior …”

Section: Introductionmentioning

confidence: 99%

“…The strong surface modification ability of plasma makes it a suitable technology for food applications that would benefit from surface modification, such as the handling of grain or cereal to improve their textural characteristics, germination, and cooking behavior. 27,28 The process of drying grapes, as mentioned earlier, would be significantly improved if the outer waxy layer could be removed or dissociated. Plasma with adequate etching ability could be a novel pretreatment for drying as it can rapidly modify the surface properties of grape skin while leaving no toxic residue.…”

Section: Introductionmentioning

confidence: 99%

Effect of novel atmospheric‐pressure jet pretreatment on the drying kinetics and quality of white grapes

Huang

et al. 2019

J Sci Food Agric

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BACKGROUND Raisin is a popular snack and a common constituent of many foods owing to its good flavor and nutritional value. Conventional drying of grapes can be a slow and energy‐consuming process as their waxy surface hinders efficient moisture migration. A drying pretreatment that disrupts the waxy cuticle is usually applied to increase the drying rate. RESULTS The application of an atmospheric‐pressure air plasma jet to the grape surface could effectively enhance the drying kinetics and decrease the drying time by more than 20%. Through etching of the waxy cuticle, the air plasma jet optimally improves the quality of the final product. Although the surface hydrophilicity was increased by 40%, the physical appearance, color, and texture of plasma‐treated raisins were similar to the product from untreated control and chemical‐treated groups. A more than twofold increase in the total phenolic content and antioxidant capacity was observed when compared to other experimental groups. CONCLUSIONS The results indicate that atmospheric plasma could be a better option than using chemicals to pretreat grapes before drying since it leaves no toxic residue, while successfully preserving the product quality. This work shows the great potential for the application of atmospheric air plasma in the drying of food materials. © 2019 Society of Chemical Industry

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“…Plasma treatment of seeds is a new approach that is being proposed to assist germination and survival 9 . Plasma is formed by a discharge in a gas, and in the case of an air plasma consists of ions, energetic electrons, neutral species, reactive oxygen species (ROS) and reactive nitrogen species (RNS) and produces electromagnetic radiation such as UV.…”

Section: Introductionmentioning

confidence: 99%

Cold plasma treatment for cotton seed germination improvement

Groot

Hundt

Murphy

et al. 2018

Sci Rep

Self Cite

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Adverse environmental conditions at planting, such as cold temperature or water limitation, can lead to a reduced level of seed germination and plant establishment for cotton. Cold atmospheric-pressure plasma (CAP) treatment of cotton seeds prior to planting may help alleviate this problem. CAP is ionised gas that has a range of biological activities due to the formation of a mix of reactive oxygen and nitrogen species (RONS), excited molecules, charged particles and UV photons. Our results show that a 27 minutes CAP treatment using air can significantly increase water absorption of the seed, and improve warm germination, metabolic chill test germination and chilling tolerance in cotton. We also observe that the beneficial effect of CAP treatment is long-lasting and stable as improved germination activity is still seen when treatment occurs 4 months before germination testing, suggesting that future large-scale industrial seed plasma treatments may still be effectively applied well (months) before the seed planting. We conclude that CAP treatment is a promising new tool for use in the cotton industry that has the potential to significantly improve plant establishment in a wider range of environmental conditions.

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Non-Thermal Plasma Treatment of Agricultural Seeds for Stimulation of Germination, Removal of Surface Contamination and Other Benefits: A Review

Cited by 216 publications

References 39 publications

Surface chemistry and germination improvement of Quinoa seeds subjected to plasma activation

Surface chemistry and germination improvement of Quinoa seeds subjected to plasma activation

Effect of novel atmospheric‐pressure jet pretreatment on the drying kinetics and quality of white grapes

Cold plasma treatment for cotton seed germination improvement

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