The acid reacts with the aluminum which can impart an off-flavor and a grayish color.

The acid reacts with the aluminum which can impart an off-flavor and a grayish color.

impart A to B :  A 에게 B 를 전하다(부여하다). -> A라는 특성을 B에게 주다.

Preservatives can impart colour and flavour to a product.
The chemicals imparted a bluish color to the paper.


from

• http://www.merriam-webster.com/dictionary/impart 
  
• http://dictionary.cambridge.org/dictionary/learner-english/impart?q=impart