Ahmed Shameem, Hayashi Nobuya
Department of Plasma and Quantum Science and Engineering, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, Japan.
Bangladesh Ansar and Village Defence Party, Ministry of Home Affairs, Dhaka, 1219, Bangladesh.
Sci Rep. 2024 Dec 16;14(1):30465. doi: 10.1038/s41598-024-81661-y.
The present study aimed to assess the effect of oxygen plasma treatment on the germination rate, growth, and antioxidative activity of mung beans at different pressures and irradiation exposure times. Oxygen plasma was capable of shortening the germination time as well as improving the germination rate at each gas pressure and exposure time compared to control. The germination rate of plasma-treated seeds exceeded 90% within 18 h of seeding compared to 30 h for the control (without plasma treatment). Stem length increased by 25.42 to 52.88% depending on the pressure and exposure time compared to control. Vitamin C content in the stem and root increased from 1.49 to 1.97 and 1.27 to 2.04-fold higher, respectively, depending on the pressure and exposure time compared to control; while in the case of thiol content, it was 1.16 to 2.76 and 1.09 to 2.49-fold higher in the stem and root, respectively. Plasma treatment increased antioxidant potency compared to control. Maximum antioxidant potency was found at 30-min exposure time, although the alterations in pressure did not elicit prominent changes. Plant growth, vitamin C and thiol contents, and antioxidant potency were increased with increasing pressure up to 60 Pa, which then declined with higher pressure. On the other hand, these parameters decreased with a longer exposure time, except for the antioxidants. Thiol and vitamin C contents were associated with plant growth.
本研究旨在评估氧等离子体处理在不同压力和辐照暴露时间下对绿豆发芽率、生长及抗氧化活性的影响。与对照组相比，氧等离子体能够缩短每种气压和暴露时间下的发芽时间并提高发芽率。播种后18小时内，经等离子体处理种子的发芽率超过90%，而对照组（未进行等离子体处理）则需要30小时。与对照组相比，茎长根据压力和暴露时间增加了25.42%至52.88%。茎和根中的维生素C含量分别比对照组高出1.49至1.97倍和1.27至2.04倍，具体取决于压力和暴露时间；而对于硫醇含量，茎和根中的硫醇含量分别比对照组高出1.16至2.76倍和1.09至2.49倍。与对照组相比，等离子体处理提高了抗氧化能力。在30分钟暴露时间时发现最大抗氧化能力，尽管压力变化并未引起显著变化。植物生长、维生素C和硫醇含量以及抗氧化能力在压力增加至60帕斯卡时增加，之后随着压力升高而下降。另一方面，除抗氧化剂外，这些参数随着暴露时间延长而降低。硫醇和维生素C含量与植物生长相关。
