Andean grains are key elements in the construction of family production systems. These seeds speak of the history of a people, their customs and ancestral knowledge. The general objective of the work was to evaluate the food use, crop management and traditional knowledge about the medicinal use of ancestral Andean grains among the inhabitants of the districts of Quinua and Acos Vinchos (Ayacucho-Peru). Basic descriptive research, carried out by means of convenience sampling, the sample size determined by the Law of Diminishing Returns, after signing an informed consent form. Semi-structured individual interviews were applied to 96 informants. A total of 96.9% of the informants reported that they obtained quinoa grain from their own crops, and 24.0% obtained achita grain that they sowed directly on their land; no cañihua was cultivated. A total of 58.3% use quinoa and achita in their diet. The variability of the food use of ancestral grains, specifically quinoa and achita, constitute a natural source of vegetable protein of high nutritional value, which represents one of the main foods of the inhabitants of Quinua and Acos Vinchos. Traditional medicine derived from the ancestral knowledge of Andean grains is barely preserved, but this is not the case for other medicinal plants in the area, as this knowledge is still preserved.

The dynamics of natural regeneration of high Andean ecosystems disturbed by fires in the district of Chiara, Ayacucho - Peru was studied. Three study zones were established along the Ayacucho - Cusco road, district of Chiara: Toccto, Incapaperqan and Qewillaqocha, characterized by areas with and without fire impact, applying the band transect sampling method. In Qewillaqocha the most frequent species were Festuca dolichophylla, Plantago australis, Luzula racemosa, Calamagrostis vicunarum, F. dolichophyla had the greatest coverage, followed by C. vicunarum. In density, creeping and cespitose species such as Lachemilla pinnata, L. racemosa stood out; in non-impact vegetation, F. dolichophylla was the most representative, followed by C. vicunarum. In Incapaperqan, plant species are in regrowth, highlighting Bromus catharticus, F. dolichophylla, Poa sp., and Muhlenbergia peruviana; in the non-impacted zone, F. dolichophylla predominates, followed by L. pinnata and C. vicunarum. In Toccto, there are resprouts of F. dolichophyl-la. In the non-fire zone, F. dolichophylla is the most frequent, followed by C. vicunarum. The burned areas presented higher species richness in relation to areas without impact, the diversity indices are very low in both cases. The affected areas will recover with the first rains and will be in full splendor within 4-5 years. F. dolichophylla does not die completely in the fire. Regeneration by seeds is very slow

Bioactive peptides resulting from the hydrolysis of proteins in Chenopodium quinoa Willd. play significant roles in the body as they exhibit a range of biological functions relevant to human health. Enzymatic hydrolysis has been identified as a sustainable and efficient method for bioactive peptide extraction, minimizing environmental impact and maximizing yield. The challenge was to review and compare methodologies for obtaining peptides from protein concentrates and hydrolysates with antioxidant capabilities. Peptides and amino acids with functional properties can be used in the food and pharmaceutical industries, demonstrating significant biological activity (e.g., antioxidant and anti-inflammatory). This highlights Chenopodium quinoa as a valuable source of bioactives, though further in silico and in vivo studies are necessary to fully characterize and validate their potential.