Regarding the method of microwave assisted extraction, we have been able to discard the technique of microwave-assisted extraction without solvent (SFME) as a valid alternative method to conventional extraction, as it does not provide any additional advantage. However, in the case of the developed method of pretreatment with microwaves in the presence of solvent (PMAE), the established conditions have allowed significant advances: 1) the acceleration between 12 and 21 times of the extraction speed of the polyphenols, 2) the increase in the extraction yield of polyphenols by 50% and its concentration in the final dry extract by 50% for total polyphenols and by 85% for anthocyanins (85%), and 3) the increase in the bioactivity of the extracts obtained with microwaves up to a double value corresponding to those obtained with conventional extraction. Regarding the development of a continuous microwave oven at the pilot plant scale, a 3 kW unit has been simulated, designed and built, with a very high radiation absorption efficiency (99%), in a considerable range of frequencies , around the design value (2.45 GHz). The incorporated regulation systems, both in the guide wave and in the cavity, will allow its adaptation to a wide range of products to be treated. It remains to check the operation of the oven with stable flow of pomace without crushing, due to the problems described in the product’s drive system. In the requested extension period, it is expected to solve the problem with the equipment currently under development, and perform the tests that confirm the validity of the change of scale.