PROBLEM TO BE SOLVED: To provide a crude tea producing machine which reduces microorganisms in crude tea by a kneading/twisting means and a conveying means without a heating means for heating tea leaves a method for producing crude tea the crude tea and a method for reducing microorganisms in the crude tea.SOLUTION: In the first embodiment, the crude tea producing machine at least includes: a steam-heating means a rough kneading means the kneading/twisting means, an intermediate kneading means, and the conveying means. The kneading/twisting means includes a kneading board, a kneading mortar which turns on the kneading board and which has a sweeping brush supported to the hem, and a cone-shaped pressure-kneading board disposed within the kneading mortar for pressing the tea leaves on the kneading board. The kneading board has a low-adherent surface member in a prescribed range close to the outer circumference.COPYRIGHT: (C)2012,JPO&INPIT【課題】この発明の課題は、茶葉の加熱処理手段を備えていない揉捻手段と搬送手段において、荒茶の微生物を低減化する荒茶製造機、荒茶の製造方法、その荒茶と荒茶の微生物数低減化方法を提供することである。【解決手段】本発明の第1手段では、少なくとも蒸熱手段、粗揉手段、揉捻手段、中揉手段及び搬送手段を備えた荒茶製造機において、前記揉捻手段は、揉盤と、この揉盤上を旋回移動し、裾に掃き込みブラシを支持した揉捻鉢と、前記揉捻鉢内に配設され、揉盤上の茶葉を加圧する略円錐形の揉圧盤とを備えており、前記揉盤は外周寄りの所定範囲を低付着性の表面部材にした荒茶製造機である。【選択図】図1
