Sept 15 (Reuters) - Blue Apron Holdings Inc (APRN.N) said on Wednesday its co-founder and chairman Matthew Salzberg has resigned from the board of the meal kit delivery company to focus on other business interests. Jennifer Carr-Smith, a current independent board member, will succeed Salzberg, the company said. Blue Apron also said it was looking to raise $78 million in equity, including a $3 million private placement with Salzberg, to fund growth and raise wages for hourly employees. Salzberg co-founded Blue Apron in 2012 and served as its chief executive until 2017.