The present invention relates to microcapsules and continuous process of water to oil microencapsulation in water by means of an in-situ to interfacial polymerization of the emulsion. The formulation comprises a continuous aqueous phase having a dispersion of microcapsules containing drops of oil, and wherein within each drop of the oil phase-optionally containing oil-soluble materials-, there is a dispersion of water, or aqueous extract or material. water dispersible or water soluble material. The oil drops are encapsulated with a polymerizable material of natural origin. Such microcapsules are suitable for spray-drying processes, to be used as a dry powder, lyophilized, self-emulsifying powder, gel, cream and any liquid form. The active compounds included in the microcapsules are beneficial to health for other biological purposes. Such formulations prove to be suitable for incorporation into any kind of food, especially for the production of nutraceuticals, as well as cosmetic products (such as rejuvenating creams, wrinkles, gels, bath and shower consumables and sprays.) The preparations are suitable for stabilization. compounds added to food, microbial and nutraceutical culture media, especially those that are easily degradable or oxidizable.La presente invención se refiere a microcápsulas y proceso continuo de microencapsulación agua en aceite en agua mediante una polimerización in-situ a interfacial de la emulsión. La formulación comprende una fase acuosa continua teniendo una dispersión de microcápsulas que contienen gotas de aceite, y en donde en el interior de cada gota de fase aceite-opcionalmente conteniendo materiales solubles en aceite-, existe una dispersión de agua, o extracto acuoso o material dispersable en agua o material soluble en agua. Las gotas de aceite son encapsuladas con un material polimerizable de origen natural. Tales microcápsulas son adecuadas para procesos de secado por spray (spray-dry), para ser usadas como un polvo seco, liofilizada
