Carboxyl groups have an electronegative oxygen atom double bonded to a carbon atom. This carbon-oxygen bond is very polar and the fact that its a double bond increases the polarity of the bond.
PEA agar, also referred to as Phenylethyl Alcohol Agar is a medium  used by microbiologists to grow microorganisms. The ingredient that  supplies nitrogen is casein. Making the world better, one answer at a time.
Vega has two protein bars that combine sprouted rice protein, pea protein, and sacha inchi seeds for a filling source of 15g of protein and 240 calories a bar. The sacha inchi seeds are also a great plant-based source of the amino acid tryptophan and omega-3s.