乾草の製造方法改善に関する研究
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The hay-making is generally dificult in Japan, owing to the high content of humidity of air in hay-making season, especially in humid regeon, such as Hokuriku district of Japan. We have experienced that the almost carotene content of green forage was lost away by using ordinary hay-making method. Therefore, some improvement of drying process is needed. After comparing several methods of bay-making, with each other we have convinced that “press-drying process” was the most suitable method for farmer in the aspect of vitamin reservation. The superiority of this new process consists in first its easiness of drying, (the time required for drying can be shortened to 1/3 of ordinary drying method), secondary its keeping ability of vitamin potency (the carotene loss can reduced to almost 50% of original content, while the ordinary air-dried hay shows the 90% loss of carotene). The changes of each ingredient during “press-drying process” are discussed in detail.
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