Wood-rotting fungi represent an important component of forest ecosystems. Among them, white-rot fungi are the most efficient lignin degraders. Biopulping using white-rot fungi in pretreatment of the materials, is one of the solutions to overcome disadvantages of traditional production methods. Today, the isolation and screening of lignin degrading fungi capable for application in biopulping are of keen interest in Vietnam. The use of non–wood, plant fibres in pulp and paper industry, special, agricultural residuces such as rice and wheat straw, sugarcane baggase, cornstalks etc is the new production toward, potential, serving sustainable development. The fungus CP9, which possessed high ligninolytic activity, was identified and studied in pretreatment of rice straw for biopulping. The fruiting bodies of strain CP9 were effuse on trunk. The hymenium was porous and brown white with short tubes, the white mycelia penetrated wood block. The colony was off-white, blossom, irregularly circular. The mycelia were thick and closely bound together. Beside lignin, this fungus could degrade other substrates such as casein, carboxymethyl cellulose and starch. Biological and morphological characteristics of the fungus CP9 suggested its placement in subdivision Basidiomycota. Combined with the results of phylogenetic analysis, which showed 99% similarity of the fungus with species Leiotrametes lactinea, our strain was named as Leiotrametes lactinea CP9. This fungus could grow well on rice straw under solid state fermentation. Pretreatment of rice straw using L. lactinea CP9 was based on the activity of fungal lignin peroxidase and laccase. After 20 days, the residual enzyme activity was of 21.6 and 18.4 nkat/g material for lignin peroxidase and laccase, respectively. Pretreatment significantly improved the quality of straw, as lignin loss of 38% while cellulosic fibers were comparatively well preserved.

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After the Second World War, two confrontation systems led by the United States and the Soviet Union were established. The two superpowers played decisive roles that affected all international relations, involving many regions and nations in a new form o f war -the Cold War. Although it was called the 'Cold War', the atmosphere o f the world was not 'cold' at all. The local conflicts between the U.S. forces and the Soviet Union's allies happened in many regions. With the formation and competition between communism and capitalism, Vietnam's decolonization struggle was put into a spiral and affected by the profound influence o f this context. This article draws on Vietnamese official documents and materials to show that the process o f decolonization in Vietnam lasted longer and fiercer because o f not only the French government's determination to reestablish its old colonial rule but also the Cold War. The fear o f communism coverage throughout Asia and the world led to the ballooned aid from Washington to the French army in Indochina during the 1950s. Meanwhile, China and the Soviet Union provided military and economic assistance to Vietnam. The Vietnamese struggle for indepen dence became not only a centre o f the Cold War in Asia but also the critical front worldwide and «hot» com petition to determine the result o f the two rival ideological systems. The Cold War impacted the Anti-French resistance in Vietnam, and by contrast, the Vietnamese struggle had a profound impact on France. During the war in Indochina, the international image o f France was damaged and the political situation was unstable. The decolonization process, therefore, forced the Paris government into seeking solutions to stabilize the political and economic situation as well as enhance its prestigious position and integrate into Europe.