Proteins are essential macronutrients for the human diet. They are the primary source of nitrogen and are fundamental for body structure and functions. The plant protein quality (PPQ) refers to the bioavailability, digestibility, and amino acid composition. The digestibility specifies the protein quantity absorbed by an organism relative to the consumed amount and depends on the protein structure, previous processing, and the presence of compounds limiting the digestion. The latter are so-called antinutritional factors (ANF), exemplified by phytates, tannins, trypsin inhibitors, and lectins. Animal proteins are known to have better digestibility than plant proteins due to the presence of ANF in plants. Thus, the inactivation of ANF throughout food processing may increase the PPQ. New food processing, aiming to increase the digestibility of plant proteins, and new sources of proteins are being studied for the animal protein substitution. Here, it is presented the impact of processing on the protein digestibility and reduction of ANF. Several techniques, such as cooking, autoclaving, germination, microwave, irradiation, spray- and freeze-drying, fermentation, and extrusion enhanced the PPQ. The emerging non-thermal technologies impact on protein functionalities but require studies on the protein digestibility. How to accurately determine and how to improve the protein digestibility of a plant source remains a scientific and technological challenge that may be addressed by novel or combining existing processing techniques, as well as by exploring protein-enriched by-products of the food industry.

This scientific note presents preliminary developments of the Covid-19 pandemic on unemployment, poverty, and hunger in Brazil. The data on unemployment rate, un employment insurance claims, contingent of families in extreme poverty, and food insecurity was collected in government information systems, research published by public agencies, scientific articles, and in news portals. In an upward trajectory since 2015, the increase in unemployment and the number of families in extreme poverty was exacerbated after the pandemic began, drastically reducing the purchase power and access to healthy and adequate food, affecting mainly women and the populations of the Northern and Northeastern regions. Between January and September 2020, there was a 3% increase in unemployment in Brazil and, in October 2020, there were almost 485 thousand more families in extreme poverty compared to January of the same year. There are inadequate and insufficient responses from the Brazilian government to the articulated set of problems. The Covid-19 pandemic is a new element that potentiates the recent increase in hunger in Brazil, which occurs in parallel with the dismantling of the Food and Nutrition Security programs and the expansion of fiscal austerity measures, started with the political-economic crisis in 2015. There is an urgent need to recover the centrality of the agenda to fight hunger in Brazil, associated with the development of more robust contributions on the impact of the pandemic on the phenomena of poverty and hunger.