呼吸作用是动物吸进氧气和呼出二氧化碳气的一种生理表现。它是一切生物维持生命活动的基础。动物停止呼吸就表示生命的结束。植物虽然没有专职的呼吸系统,但也表现耗氧与放出二氧化碳气,并且沿袭呼吸作用这一特定名辞。人们日常生活中需用的粮食都取材于作物的种子。因之原粮是各类作物种子的总称。有萌发力的种子,胚为表现呼吸作用的主要部位。经加工后的成品粮,如面粉与大米在密封条件中也表现耗氧与放出二氧化碳。这主要由于感染了微生物和害虫有关。这些生物也进行呼吸,且强度比种子本身大,所以粮食的呼吸作用是一个笼统的名词,实际是粮堆生态系统的总体表现。在正常有氧的空气中,呼吸作用是以葡萄糖为“燃料”的生物氧化作用。有机物质的燃烧是直接氧化并放出热能。生物氧化是在常温中进行的,通过酶的催化作用完成一系列的 Breathing is a physiological manifestation of an animal’s inhalation of oxygen and expiration of carbon dioxide gas. It is the basis for all living things to sustain life. When the animal stops breathing, it means the end of life. Although the plant does not have a full-time respiratory system, it also displays oxygen consumption and emits carbon dioxide gas, and follows the specific rhetoric of respiration. People need food in daily life are derived from the seeds of the crop. Because of the original grain is all kinds of crop seeds in general. Seed germination, embryo is the main part of the performance of respiration. Processed finished food, such as flour and rice in the sealing conditions also showed oxygen and emit carbon dioxide. This is mainly due to the infection of microorganisms and pests. These creatures also breathe and are stronger than the seeds themselves, so the respiration of food is a general term that is actually the overall manifestation of the food ecosystem. In normal aerobic air, respiration is the biological oxidation of glucose as a “fuel.” The combustion of organic substances is direct oxidation and release of heat. Biological oxidation is carried out at room temperature, through the catalytic effect of the enzyme to complete a series of