또한 추출 및 염색에서 pH조건이 낮을수록 염색된 직물의 b* 값이 증가하여 황색 기미가 증가하는 것으로 나타났다.
In addition, it was found that the lower the pH condition in extraction and dyeing, the higher the b* value of the dyed fabric, resulting in an increase in yellowish tinge.