Gamma radiation and magnetic field mediated delay in effect of accelerated ageing of soybean.

Abstract

Soybean seeds were exposed to gamma radiation (0.5, 1, 3 and 5 kGy), static magnetic field (50, 100 and 200 mT) and a combination of gamma radiation and magnetic energy (0.5 kGy + 200 mT and 5 kGy + 50 mT) and stored at room temperature for six months. These seeds were later subjected to accelerated ageing treatment at 42 °C temperature and 95-100 % relative humidity and were compared for various physical and biochemical characteristics between the untreated and the energized treatments. Energy treatment protected the quality of stored seeds in terms of its protein and oil content . Accelerated aging conditions, however, affected the oil and protein quantity and quality of seed negatively. Antioxidant enzymes exhibited a decline in their activity during aging while the LOX activity, which reflects the rate of lipid peroxidation, in general, increased during the aging. Gamma irradiated (3 and 5 kGy) and magnetic field treated seeds (100 and 200 mT) maintained a higher catalase and ascorbate peroxidase activity which may help in efficient scavenging of deleterious free radical produced during the aging. Aging caused peroxidative changes to lipids, which could be contributed to the loss of oil quality. Among the electromagnetic energy treatments, a dose of 1-5 kGy of gamma and 100 mT, 200 mT magnetic field effectively slowed the rate of biochemical degradation and loss of cellular integrity in seeds stored under conditions of accelerated aging and thus, protected the deterioration of seed quality. Energy combination treatments did not yield any additional protection advantage.

AI evidence extraction

Main findings

Soybean seeds exposed to gamma radiation (1–5 kGy) and/or static magnetic fields (100–200 mT) showed slower biochemical degradation and better maintenance of seed quality (protein/oil content) under accelerated ageing compared with untreated seeds. Accelerated ageing negatively affected oil and protein quantity/quality; antioxidant enzymes declined while LOX activity generally increased. Combination treatments (gamma + magnetic field) did not provide additional protection beyond single treatments.

Outcomes measured

• Seed quality during storage/accelerated ageing (protein and oil content/quality)
• Antioxidant enzyme activity (catalase, ascorbate peroxidase)
• LOX activity (lipid peroxidation)
• Biochemical degradation and cellular integrity under accelerated ageing

Limitations

• Sample size not reported in abstract
• Duration of accelerated ageing treatment not specified
• Study is on seeds/food storage rather than human/animal health outcomes

{
    "study_type": "other",
    "exposure": {
        "band": null,
        "source": "static magnetic field; gamma radiation",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": "stored at room temperature for six months; later subjected to accelerated ageing at 42 °C and 95–100% RH (duration not stated)"
    },
    "population": "Soybean seeds",
    "sample_size": null,
    "outcomes": [
        "Seed quality during storage/accelerated ageing (protein and oil content/quality)",
        "Antioxidant enzyme activity (catalase, ascorbate peroxidase)",
        "LOX activity (lipid peroxidation)",
        "Biochemical degradation and cellular integrity under accelerated ageing"
    ],
    "main_findings": "Soybean seeds exposed to gamma radiation (1–5 kGy) and/or static magnetic fields (100–200 mT) showed slower biochemical degradation and better maintenance of seed quality (protein/oil content) under accelerated ageing compared with untreated seeds. Accelerated ageing negatively affected oil and protein quantity/quality; antioxidant enzymes declined while LOX activity generally increased. Combination treatments (gamma + magnetic field) did not provide additional protection beyond single treatments.",
    "effect_direction": "benefit",
    "limitations": [
        "Sample size not reported in abstract",
        "Duration of accelerated ageing treatment not specified",
        "Study is on seeds/food storage rather than human/animal health outcomes"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "soybean seeds",
        "gamma radiation",
        "static magnetic field",
        "accelerated ageing",
        "seed quality",
        "protein content",
        "oil content",
        "antioxidant enzymes",
        "catalase",
        "ascorbate peroxidase",
        "lipoxygenase",
        "lipid peroxidation"
    ],
    "suggested_hubs": []
}

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