Development of stable high internal phase emulsions by pickering stabilization: Utilization of zein-propylene glycol alginate-rhamnolipid complex particles as colloidal emulsifiers

•Zein-propylene glycol alginate-rhamnolipid complex particles were prepared.•Stable Pickering high internal phase emulsions were fabricated by complex particles.•Complex particles formed a packed layer against droplet coalescence.•The resultant emulsions formed an elastic gel-like structure.•High internal phase emulsions showed good stability against environmental condition.