The present invention relates to a method for producing non-additive powdered soy milk using fine soybean powder and to non-additive powdered soy milk produced through the same. In particular, only good live soybeans are selected and washed. The selected and washed live soybeans are steamed at a high temperature and a high pressure while not being peeled. The soybeans are completely dried using a near-infrared ray dryer. The dried soybeans are pulverized into ultrafine particles using a mechanical pulverizing device in which an internal temperature is maintained in a cooling state. The non-additive powdered soy milk produced through the method according to the present invention is powdered soy milk which is made into ultrafine powder, so that a consumer does not experience coarseness when drinking it mixed in water. Additives are never added, and only the fine soybean powder is included, so as to be beneficial to human health. The live soybeans are not peeled but used with the skins, so that a consumer can experience a sweet taste due to the sugar content in the skins even though sugar is not separately added. The soybeans are dried using near-infrared rays, so that a separate sterilizing step is not needed and the overall process is reduced. The powdered soy milk is sealed and packed after being completely dried, so that acidification can be prevented. Accordingly, the expiration date can be remarkably postponed so that mass production and mass distribution are possible. Moreover, the procedure is simplified so that production costs can be reduced.COPYRIGHT KIPO 2014본 발명은 본 발명은 대두 미세분말을 이용한 무첨가 분말 두유의 제조 방법 및 이에 의해 제조되는 무첨가 분말 두유에 관한 것으로서, 구체적으로는 양호한 상태의 생대두만을 엄선하여 선별 및 수세하고, 상기 선별 및 수세된 생대두를 껍질을 탈피하지 않은 상태로 고온 고압 조건에서 증숙한 후, 근적외선 건조기를 이용하여 완전 건조를 실시하고, 상기와 같이 건조된 대두를 내부 온도가 냉각 상태를 유지하는 기계식 분쇄기를 이용하여 초미세 크기의 입자로 분쇄하는 것을 포함하는 완전 무첨가 분말 두유의 제조 방법 및 이에 의해 제조되는 무첨가 두유 분말을 제공한다. 본 발명에 따른 방법에 의해 제조되는 무첨가 분말 두유는 초미세 크기로 분말화된 분말 두유이므로 물에 섞어 음용시 거친 느낌이 없고, 대두 미세분말 외의 일체의 첨가
