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等离子医学
SJR: 0.278 SNIP: 0.183 CiteScore™: 0.57

ISSN 打印: 1947-5764
ISSN 在线: 1947-5772

等离子医学

DOI: 10.1615/PlasmaMed.2017019137
pages 349-359

Response of Silkworm Larvae to Atmospheric Pressure Nonthermal Plasma Irradiation

Thapanut Sarinont
Department of Electronics, Kyushu University, Fukuoka-shi, Fukuoka 819-0395, Japan
Yosuke Wada
Department of Electronics, Kyushu University, Fukuoka-shi, Fukuoka 819-0395, Japan
Kazunori Koga
Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
Masaharu Shiratani
Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan

ABSTRACT

Responses of fifth-instar silkworm (Bombyx mori L.) larvae to plasma irradiation were studied using atmospheric pressure dielectric barrier discharge plasma. The growth rate decreased sharply until the day after plasma irradiation and was dependent on the duration of plasma irradiation. Growth rates were similar after irradiation for 60 s and 300 s, but after 600 s, the rate was lower than that after 60 s. The total weight of silkworm larvae decreased as the number of plasma irradiations was increased from one to three. The weight of silk cocoons produced after a single plasma irradiation was 11% heavier than for non-irradiated larvae, whereas the cocoons were 6% and 13% lighter after three and five periods of plasma irradiation, respectively. We conclude that plasma irradiation to fifth-instar silkworm larvae had little effect on silk protein and silk surface morphology.


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