tailieunhanh - Insecticides Basic and Other Applications Part 14

Tham khảo tài liệu 'insecticides basic and other applications part 14', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Non-Chemical Disinfestation of Food and Agricultural Commodities with Radiofrequency Power 249 macromolecules and denature their normal biological order and function. The most essential thermal damage that leads to cell death is the denaturation of enzymes especially some critical enzymes responsible for DNA and RNA replications in the cell Roti Roti 1982 . Thermal energy or heat can cause non-repairable denaturation of DNA RNA and sometimes create structural DNA lesions sections of DNA contain elementary damage sites that cause the loss of cellular genetic information Ward 1985 . Heat also transfers its energy to make molecules more energetic which leads to weaker hydrogen bonds and hydrophobic interactions sustaining the cell membrane and eventually causes its disruption or collapse. The disruption of cell membrane leads to uncontrollable material exchange between the cell and its environment which causes the cell to lose its optimum microenvironment required for its metabolisms and the cell dies eventually Bowler Fuller 1987 . Heat can also destroy storage materials in cells such as lipids fats and carbohydrates by oxidation. Thermal energy from RF power can increase insect body temperature high enough to be lethal and destroy them disinfestation by causing cellular damages . cell death or dysfunctional or body dehydration. The thermal death due to cellular damages of this multi-cellular organism is not usually the consequence of massive cell death per unit time but it may due to the loss or disruption of cells in a certain critical tissues Denlinger Yocum 1998 . Differences in species and developmental stages are also likely to influence the site of lethal thermal wounding. The more complex the biological system the more susceptible it is to high thermal stress. Therefore it is expected that macromolecules . proteins DNA RNA lipid fat etc. are more resistant to thermal stress than cellular organelles . mitochondria nucleus Golgi complex etc. cellular .

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.