Cold plasma disinfestation of Callosobruchus maculatus infested soybeans: Its subsequent impact on soymilk extraction yield and quality
Abstract
Soybeans play a vital role in the world economy as an essential food commodity by fulfilling human dietary needs. Hence, the seeds are commonly transported and stored in bulk quantities in various parts of the world which ultimately results in infestation issues. Callosobruchus maculatus is one of the major storage pests that infest the soybean seeds and cause losses in both the quantity and quality of the seeds. Cold plasma (CP) is an emerging non‐thermal disinfestation technique that can disinfest food grain. Hence, we have used low pressure (<2 mbar) CP at different voltages (1.0–2.0 kV) and exposure times (2–24 min) to disinfest the C. maculatus from soybeans. The maximum mortality of 100.00 ± 0.00%, 98.89 ± 1.92%, and 37.33 ± 8.08% was achieved in adult, pupae, and egg stage insects, respectively, after 24 min of prolonged CP exposure at 2.0 kV voltage. However, CP treatment (1.5 kV–18 min) induced only 11.11 ± 3.85% mortality in larval stage insects as they were well protected under soybean seed coat. During the experiment, we also identified the impact of insect sex and egg age on the CP treatment effectiveness. Further, we have also analyzed the egg‐producing capacity of CP‐treated adult insects before their death. Apart from disinfestation, the CP treatment also assisted the soymilk extraction and increased the extraction yield from 92.44 ± 1.02% (control) to 97.22 ± 0.19% after CP treatment (2.0 kV–12 min). Nevertheless, the FTIR and SDS PAGE results had not shown any changes in the quality of soymilk extracted after CP treatment. Practical applications: Since the lab scale study was found to be effective against most of the C. maculatus life stages, it is possible to adapt the CP for large‐scale disinfestation applications with essential modifications (i.e., pressure, conveyors) in the system's designs. Apart from that, CP also modifies the surface nature of the grains, hence the treatment also assists in increasing the extraction yield (milk, oil, and protein) and germination percentage of food grains.
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Cold plasma successfully disinfested Cowpea weevil, Callosobruchus maculatus, and increased soymilk extraction without quality deterioration in soybean.
“Similarly, another study observed successful disinfestation of Cowpea weevil, Callosobruchus maculatus (Coleoptera: Bruchidae) along with increased soymilk extraction without any quality deterioration in soybean by direct exposure to cold plasma (Anbarasan et al., 2023)38.”
From Atmospheric cold plasma alters plant traits and negatively affects the growth and development of fall armyworm in rice (2025) · cites this paper as Anbarasan et al., 2023
Cold plasma successfully disinfested Cowpea weevil, Callosobruchus maculatus, and increased soymilk extraction without quality deterioration in soybean.
“Similarly, another study observed successful disinfestation of Cowpea weevil, Callosobruchus maculatus (Coleoptera: Bruchidae) along with increased soymilk extraction without any quality deterioration in soybean by direct exposure to cold plasma (Anbarasan et al., 2023)38.”
From Atmospheric cold plasma alters plant traits and negatively affects the growth and development of fall armyworm in rice (2025) · cites this paper as [38]
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- Authors
- Anbarasan, R., Boopathy, B., Stephen, J., & Radhakrishnan, M.
- Affiliations
- Centre of Excellence in Non‐Thermal Processing National Institute of Food Technology, Entrepreneurship and Management Thanjavur Tamil Nadu India
- National Institute of Food Technology, Entrepreneurship and Management - Thanjavur (IN)
- Corresponding author
- Radhakrishnan, Mahendran
- Venue
- Journal of Food Process Engineering
- Publisher
- Wiley
- Published
- 2022-12-16
- Volume
- 46
- Issue
- 2
- ISSN
- 0145-8876 (ISSN-L)
- 1745-4530
- OpenAlex
- W4313287770
- Cited by
- 19
- References
- 26
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 4 · 2023: 4
- FWCI
- 1.93
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Food Process Engineering (publishedVersion)
- Funders
- Science and Engineering Research Board
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Plasma Applications and Diagnostics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect behavior and control techniques
- Keywords
- Callosobruchus maculatus, non-thermal plasma, insect mortality, insect development stages, egg age, low-pressure plasma, seed disinfestation, germination, food safety, soybean oil extraction, protein extraction
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