Influence of the Conservation Method on the Postharvest Quality Indicators of Phaseolus vulgaris L

Phaseolus vulgaris L. is one of the grains that in Cuba enjoys a long tradition of consumption and demand, being essential in the diet of the people, as an alternative source of proteins and minerals. In this sense, the indicators that determine the quality of these orthodox seeds are of great value for their proper post-harvest conservation, since different properties have a negative impact on this food. The work consisted of determining the influence of the conservation method on the postharvest quality indicators of Phaseolus vulgaris L. The conservation method used was storage in paper-covered envelopes at ambient temperature and relative moisture for 12 months. The study varieties were CUFIG 48, La Cuba 154, CUFIG 110, CUL 156, CUFIG 145, Delicias 364, Engañador and Quivicán. The quality evaluation was carried out based on the determination of the following different physical properties: permeability of the cover, absorption capacity, water activity, moisture content and chromatic composition. The results showed that of the eight common bean cultivars, Quivicán had the highest absorption capacity, while the Engañador beans have the highest impermeability of the cover. The packaging used did not guarantee that the grain would not absorb moisture over time; however, 50 % retained the chromatic composition that indicated no hardening problems, mainly in the black and cream varieties, which is why it constituted an option for short-term conservation.