Growth and byproduct excretion profiles of recombinant strain W3110 (a) and JP231 (b) harboring phbCAB genes from A. eutrophus. Strains were grown in an aerated fermentor containing M9 minimal medium supplemented with 2 g of glucose per liter. Symbols: ●, dry cell weight; □, glucose; ▵, acetate; ⧫, pyruvate; ▾, d-lactate.