Fig.1.Effect of infection time by alginic acid decomposing bacte-ria on the production of reactive oxygen species. 标题： 图1.
The production of reactive oxygen species in Laminaria japonica during infection of alginic acid decomposing bacteria was demonstrated universally. 4、海带在褐藻酸降解菌感染下活性氧的产生具有普遍性。
Early stage of infection by alginic acid decomposing bacteria, the contents of polyphenol compound increased quickly,but the activities of polyphenol oxidase were stabilized. 3、在褐藻酸降解菌感染海带的初期，多酚类化合物含量骤然升高，而多酚氧化酶的活性却没有明显变化。
The results showed that:1. 12 strains of alginic acid decomposing bacteria were isolated.Five strains of them which could degrade alginate actively were screened out.2. 研究结果表明：1、利用选择性培养基共分离到12株褐藻酸降解菌，通过降解能力的测定，筛选出5株强降解能力的菌株。