This invention, the brown raw materials, adding the enzyme formulation which possesses the porigarakutsuronaze activity above purotease, tannase, and 20000U/g and to be something which offers the production manner of the brown extracts which consist of the fact that it selects treats, according to the manner of this invention, with enzyme treatment selection from the former brown lobe, it to be possible, to select the cell wall component of the brown lobe origin which and it cannot resolution select in addition, it to be possible attendant upon the resolution of the cell wall component, as a result, to contain the amino acid component abundantly, furthermore resolution the protein which has become selection possible in amino acid sweet taste and the bodyIt can obtain the brown extracts which possess taste and taste abundantly at high yield.本発明は、茶類原料を、プロテアーセ、タンナーゼ、および20000U/g以上のポリガラクツロナーゼ活性を有する酵素製剤を添加して抽出処理することからなる茶類エキスの製造方法を提供するものであり、本発明の方法によれば、従来の茶葉からの酵素処理抽出では、分解、抽出しきれなかった茶葉由来の細胞壁成分を抽出することができ、また、細胞壁成分の分解にともなって抽出可能となった蛋白質をさらにアミノ酸に分解することができ、その結果、アミノ酸成分を豊富に含有し、甘味、こく味および旨味を豊富に有する茶類エキスを高収率で得ることができる。
